Your browser doesn't support javascript.
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 902
Filtrar
1.
Bioresour Technol ; 303: 122964, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32061494

RESUMO

Modernization in the crop cultivation and development of high yielding varieties resulted in increased crop residues. A large portion of crop residues is not handled appropriately, which leads to environmental burden on society. The crop residues are rich in organic substances, which can be better utilized for various purposes, including energy generation. The utilization of crop residues for energy generation has partially contributed to resolve the inappropriate handling practices, thus reducing their environmental impacts. Life cycle assessment (LCA) is used as a tool to investigate environmental sustainability and can be explored to integrate with social and economic effects to quantify environmental impacts for energy generation from crop residues. This review will provide a comprehensive understanding on LCA inference for decision support to policy-makers and different relevant choices to various applications for sustainable energy generation from crop residues.


Assuntos
Meio Ambiente , Energia Renovável
2.
J Environ Manage ; 259: 109669, 2020 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-32072944

RESUMO

Renewable energy has been prioritised in decarbonising Indonesia's electricity system. Indonesia aims to attain an efficient energy system by applying renewable energy tariffs that are lower than the cost of fossil fuel-generated electricity. However, the effectiveness of this policy is questionable, as renewable energy investments under previous premium feed-in tariffs did not meet expectations. This study aims to estimate generation costs from renewable energy expansions under three scenarios, namely existing power plant planning, and 11% and 14% emission reductions in Indonesia's electricity sector. We develop an agent-based model (ABM) tool called PowerGen-ABM that employs multi-approaches: linear programming and input-output analysis. The optimisation result shows that the emission reduction targets would increase the average electricity generation costs in 2028 from 65.3 USD/ MWh in the existing plan of power plant expansions to 68.3 USD/ MWh. The increased costs are caused by insufficient dispatchable renewables in several regions such as North Maluku. Renewable energy production share in total electricity production and emission reduction achievement of the existing plan in 2025 will be 22.8% and 6.5% below the targets of 23% and 11%, respectively. In contrast, the emission reduction scenarios could achieve those targets due to higher renewables productions, especially with wind energy from 5,268 GWh in the existing plan into anywhere between 64,472 to 75,085 GWh. Several policy implications are discussed based on these findings.


Assuntos
Centrais Elétricas , Energia Renovável , Eletricidade , Meio Ambiente , Indonésia , Vento
3.
J Environ Manage ; 260: 109978, 2020 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-32090795

RESUMO

This is an evidence from a high-income economy in Southeast Asia and a support for scientific planning of the energy sector in ensuring air pollution and climate change mitigation. A comparative analysis of the energy options for electricity generation in the nation was made considering availability, cost and greenhouse gases emission - CO2, N2O and CH4, using a two-stage method comprising multi-objective optimization and TOPSIS. The renewable (RE) and non-renewable energy (NRE) options available were assessed through the lifecycle approach to determine the lifecycle greenhouse gas emission (LCGHG) and levelized cost of energy (LCOE) per MWh of electricity. Considering historical electricity consumption, annual GDP and population growth from 1965, energy consumption for the year 2035 was forecasted using support vector machine regressor in Weka. Future plans in energy diversification pathways were examined through various scenario multi-objective optimizations with a constraint on resource availability and energy target using genetic algorithm in MATLAB. The outputs were ranked using TOPSIS method. Results showed that greenhouse gases emission could be reduced by 10.3 percent compared to business as usual scenario while the energy mix could attain 10 percent renewable energy in the grid at a relatively lower generation cost.


Assuntos
Poluição do Ar , Gases de Efeito Estufa , Mudança Climática , Eletricidade , Efeito Estufa , Energia Renovável
4.
J Environ Manage ; 260: 110090, 2020 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-32090816

RESUMO

This paper presents deep decarbonization strategies for city-level energy systems. Helsinki city is used as a case in the analysis. The strategies are mainly based on extensive electrification employing renewable electricity, storage, and sector-coupling strategies. We perform energy, economic, and resilience analyses for the different cases. An energy balance model with 1-h resolution is used to optimize the energy system on macro-scale, while a MILP-algorithm is used for micro-level optimization of operation of individual plants against different criteria. The results indicate that a zero-carbon energy system is feasible by 2050, but it would also require coupling to the exogenous energy system (national electricity market) to balance mismatches. Power-to-heat coupling, or storage alone would not be adequate. As an example of system dynamics limitations, with a wind power capacity of 1.5 GW corresponding to 56% of the annual electricity demand in Helsinki, 90% of the wind electricity can be used locally in the different sectors, but the rest needs coupling to the exogenous market due to mismatch and plant limitations. The decarbonization strategies with increasing variable renewable energy production generally improve the resilience of the energy system, but with some concerns to adequacy of peak production and electricity dependency of heating.


Assuntos
Energia Renovável , Vento , Dióxido de Carbono , Cidades , Eletricidade
5.
J Environ Manage ; 260: 110143, 2020 Apr 15.
Artigo em Inglês | MEDLINE | ID: mdl-32090836

RESUMO

This paper examines the short-run and long-run effects of economic, sociological and energy factors on environmental degradation in 28 European countries. In so doing, we employ Panel Vector Autoregressive (PVAR) and Fully Modified OLS (FMOLS) approaches on data from 1990 to 2014 in a STIRPAT (Stochastic Impacts by Regression on Population, Affluence, and Technology) framework. Key empirical results indicate that these factors may contribute to environmental improvement in the short run; however, there are adverse implications in the long-run. Specifically, economic factors including economic growth, trade openness and foreign direct investment cause environmental degradation in the under-analysis economies. The sociological factors as measured by the population growth and the level of urbanization also show a negative impact on the environmental degradation in the short-run but in the long run, both population size and urbanization increase environmental degradation. These findings are in line with the concerns raised by Thomas Robert Malthus in his Essay on the Principle of Population. With regards to the energy factors, it indicates that the renewable energies help the European environment by reducing the level of carbon dioxide emissions whereas the higher energy intensity is an ecological threat. Our results remain robust in the EKC framework.


Assuntos
Desenvolvimento Econômico , Energia Renovável , Dióxido de Carbono , Europa (Continente) , Investimentos em Saúde , Urbanização
6.
Bioresour Technol ; 304: 123018, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32087547

RESUMO

Adoption of circular practices within environmental management is gaining worldwide recognition owing to rapid resource depletion and detrimental effects of climate change. The present study therefore attempted to ascertain the linkages between circular economy (CE) and sustainable development (SD) by examining the role of renewable energy (RE) and waste management (WM) sectors in CE combined with policy setup and enabling frameworks boosting the influx of circularity principles in the Indian context. Results revealed that research dedicated towards energy recovery from waste in India lacks integration with SD. Findings also revealed that although India is extremely dedicated towards attainment of the SDGs, penetration of CE principles within administration requires considerable efforts especially since WM regulations for municipal, plastic and e-waste lack alignment with CE principles. Integration of WM and RE policies under an umbrella CE policy would provide further impetus to the attainment of circularity and SD within the Indian economy.


Assuntos
Gerenciamento de Resíduos , Mudança Climática , Índia , Fenômenos Físicos , Energia Renovável , Resíduos Sólidos
7.
J Environ Manage ; 256: 109924, 2020 Feb 15.
Artigo em Inglês | MEDLINE | ID: mdl-31818740

RESUMO

Sustainability in power generation mainly depends on the transition from fossils to sustainable energy resources. Biomass from the crop residue has huge potential for renewable power generation, but it is still not utilized to its full potential. This study presents a comprehensive methodology to evaluate and forecast the current and future availability of selective crop residue to generate renewable energy. A forecast model incorporating historical trends in the crop yield has been developed in MATLAB and implemented for crop residue based biomass resource assessment of five primary crops (wheat straw, rice husk, rice straw, cotton straw, corn stover, and bagasse) in order to estimate the energy generation potential for Pakistan from 2018 till 2035. It was found that about 40 million tonnes of crop residue was available in Pakistan for power generation in the year 2018 considering a residue removal (availability) factor of 50%. This translates to an estimated potential of about 11,000 MW of electricity generation capacity using crop residue derived biomass for 2018. This capacity is predicted to gradually increase up to 16,000 MW by the year 2035 based on the trends in the growth of crop production since 2001. The suitability of a potential region for the installation of 100 MW biomass-fired power plants was also assessed by calculating crop residue density and an equivalent collection radius (Re) of 50 km (km). Punjab province of Pakistan, being an agricultural province, with relatively better road infrastructure can sustain crop residue based power plants of up to 7000 MW cumulative capacity at various locations. The challenges, such as economic, logistics, regulatory and political barriers, in generating renewable energy from biomass along with their potential solutions were also discussed. The study also provides a baseline for future research to evaluate and forecast the growth in bio-power generation potential of any biomass resource in a region based on crop yield and area of the region.


Assuntos
Produtos Agrícolas , Energia Renovável , Agricultura , Biomassa , Paquistão
8.
Environ Sci Pollut Res Int ; 26(34): 35208-35217, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31696425

RESUMO

Given that the volume of carbon emissions in the US is a significant share of the global greenhouse gas emissions, some salient factors are being currently examined so as to reverse the threat to global environmental sustainability. To this regard, the current study investigates the co-movement and long-term and short-term causal relationship between CO2 emission (a proxy for environmental quality) and renewable consumption, immigration, and healthcare by using the wavelet coherence approach which primarily provides information on dynamic correlations over time and for different time scales. The coherence approach allows the one-dimensional time data into the bi-dimensional time-frequency sphere between the variables. In addition to investigating the causal relationship between CO2 and renewable consumption, immigration, and healthcare, this study also employs gradual-shift causality and Toda-Yamamoto causality tests. With this, the study found a high variation for CO2 emission in the US at 8 scales (8 quarters) from 1999 to 2008. Additionally, there is significant feedback causality between CO2 emission and renewable consumption at different scales while a positive correlation between the variables is observed in the short run. Similarly, the result reveals that immigration significantly causes CO2 emission in the US from 2008 to 2010 and a two-way causality is detected between CO2 emission and healthcare at different frequencies and time period. Moreover, the Toda-Yamamoto causality and gradual-shift causality tests provide supportive evidence to the outcomes of the wavelet coherence-based causality test in this study. Overall, the investigation offers significant policy directive especially toward addressing the potential adverse effects from the country's immigration and healthcare amendments.


Assuntos
Assistência à Saúde , Desenvolvimento Econômico , Emigração e Imigração , Poluição Ambiental , Energia Renovável , Carbono , Dióxido de Carbono/análise , Gases de Efeito Estufa , Políticas , Estados Unidos
9.
Med J Aust ; 211(11): 490-491.e21, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31722443

RESUMO

The MJA-Lancet Countdown on health and climate change was established in 2017 and produced its first Australian national assessment in 2018. It examined 41 indicators across five broad domains: climate change impacts, exposures and vulnerability; adaptation, planning and resilience for health; mitigation actions and health co-benefits; economics and finance; and public and political engagement. It found that, overall, Australia is vulnerable to the impacts of climate change on health, and that policy inaction in this regard threatens Australian lives. In this report we present the 2019 update. We track progress on health and climate change in Australia across the same five broad domains and many of the same indicators as in 2018. A number of new indicators are introduced this year, including one focused on wildfire exposure, and another on engagement in health and climate change in the corporate sector. Several of the previously reported indicators are not included this year, either due to their discontinuation by the parent project, the Lancet Countdown, or because insufficient new data were available for us to meaningfully provide an update to the indicator. In a year marked by an Australian federal election in which climate change featured prominently, we find mixed progress on health and climate change in this country. There has been progress in renewable energy generation, including substantial employment increases in this sector. There has also been some progress at state and local government level. However, there continues to be no engagement on health and climate change in the Australian federal Parliament, and Australia performs poorly across many of the indicators in comparison to other developed countries; for example, it is one of the world's largest net exporters of coal and its electricity generation from low carbon sources is low. We also find significantly increasing exposure of Australians to heatwaves and, in most states and territories, continuing elevated suicide rates at higher temperatures. We conclude that Australia remains at significant risk of declines in health due to climate change, and that substantial and sustained national action is urgently required in order to prevent this.


Assuntos
Mudança Climática , Política Ambiental , Planejamento em Saúde , Política de Saúde , Saúde , Austrália , Economia , Exposição Ambiental , Governo Federal , Financiamento da Assistência à Saúde , Humanos , Governo Local , Mosquitos Vetores , Política , Energia Renovável , Governo Estadual , Incêndios Florestais
10.
Environ Sci Pollut Res Int ; 26(36): 36993-37000, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31745768

RESUMO

This paper complements existing literature by assessing the conditional relationship between renewable energy and environmental quality in a sample of 40 African countries for the period 2002 to 2017. The empirical evidence is based on fixed effects regressions and quantile fixed effects regressions. The findings from both estimation techniques show that renewable energy consistently decreases carbon dioxide (CO2) emissions. Moreover, the negative effect is a decreasing function of CO2 emissions or the negative effect of renewable energy on CO2 emissions decreases with increasing levels of CO2 emissions. In other words, countries with higher levels of CO2 emissions consistently experience a less negative effect compared with their counterparts with lower levels of CO2 emissions. Policy implications are discussed.


Assuntos
Energia Renovável , África ao Sul do Saara , Dióxido de Carbono/análise , Desenvolvimento Econômico , Políticas
11.
Environ Sci Pollut Res Int ; 26(33): 34448-34458, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31637612

RESUMO

In the present (twenty-first) century, the pertinent challenge of attaining the regime of food security with low pollution amidst the drive for sustainable economy and energy efficiency is core to governance and intergovernmental agencies. Therefore, in an attempt to investigate environmental issues among the coastline Mediterranean countries (CMCs) for the first time, the current study examines the dynamic long-run nexus of carbon dioxide (CO2) emissions with food production and inflation rate over the annual period 1995-2014. Using a dynamic Autoregressive Distributed Lag (ARDL) approach, the consumption of renewable energy in the panel of sixteen (16) CMCs is empirically observed to be an efficient policy vehicle for mitigating CO2 emissions. Also, in all the examined CMCs, consumption of renewables is observed to cause significant decline in CO2 emissions, thus securing a sustainable environment. However, in the long run and in the panel of CMCs, the study reveals that increase in food production (a drive toward food security) increases environmental risk. Additionally, the study found that high inflation regime in the panel CMCs is associated with low CO2 emissions especially in the long-run, thus necessitating efficient policy mechanism. In adopting the genetic resources of the International Treaty on Plant Genetic Resources, as well as employing price control policy, the members of the CMCs might have unearthed a suitable policy directive in effectively sustaining environmental quality.


Assuntos
Desenvolvimento Econômico , Poluição Ambiental/estatística & dados numéricos , Abastecimento de Alimentos , Energia Renovável , Dióxido de Carbono/análise , Poluição Ambiental/análise , Alimentos , Região do Mediterrâneo
12.
Environ Sci Pollut Res Int ; 26(31): 32298-32310, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31598925

RESUMO

Sustainable sources like wind, solar, and geothermal power are defined as a clean source of renewable energy which has a less harmful impact on the environment than other energy sources such as coal, natural gas and oil. Turkey is one of the energy-importing countries where air pollution has been become an inevitable environmental concern. Thus, investments on sustainable sources have been developed rapidly in recent years in Turkey. This paves the way for studying a site selection problem considering both solar and wind energy in Igdir Province located in the east part of Turkey. In the literature, there are many studies on solar-wind energy to select a desirable site for both energy sources, and many solution techniques have been proposed dealing with this problem. In this study, one of multi-criteria decision-making methods named analytical hierarchy process (AHP) and geographical information systems (GIS) are used to determine suitable site selection for solar-wind energy investigating four counties of Igdir: Tuzluca, Igdir Central, Karakoyunlu and Aralik. The aim of this work is first to investigate possible locations for solar-wind power plant installation using a mapping method, GIS, and then, AHP is applied to the problem to obtain optimum areas for both solar-wind energy. Also, more accurate results are provided comparing results of two methods, GIS and AHP. The results reveal that 524.5 km2 for solar power plant and 147.2 km2 for wind turbine are suitable while only 49.1 km2 is suitable for solar-wind power plan installation.


Assuntos
Centrais Elétricas/normas , Energia Renovável , Tomada de Decisões , Fontes Geradoras de Energia , Sistemas de Informação Geográfica/estatística & dados numéricos , Energia Solar , Turquia , Vento
13.
J Environ Manage ; 252: 109670, 2019 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-31600687

RESUMO

The use of renewable energy sources instead of conventional energy sources is at the core of policy actions to reduce dependency on fossil fuels worldwide. As a result, especially during the last decade, the cost of renewable energy has significantly decreased, enriching renewable energy cost-competitiveness. Due to the spatial nature of renewable energy sector-related decisions, the synergy of geographical information systems (GIS) and Multiple Criteria Decision Analysis (MCDA) models can enrich the quality of the related decisions given their ability to effectively support land management considerations. Moreover, their implementation significantly enriches the performance of the traditional capital projects evaluation methods (CPEM) by providing physical data to the sizing process in a quick and accurate manner. Thus, decision-making frameworks that combine GIS-based suitability analysis with traditional financial evaluation techniques can significantly enrich the planning phase to achieve efficient installations in terms of required area reduction, power generation maximization and local characteristics examination. With respect to the realization of wind energy exploitation projects, the paper at hand proposes a framework capable of expanding the use of the traditional GIS-based derived suitability index to establishing portfolios. Moreover, the proposed framework is enriched by robust analysis using Monte Carlo Simulation (MCS), which provides significant insights regarding the stability of the derived portfolios and the projects that they comprise. The proposed framework is illustrated through a case study in the Thrace region in northeastern Greece.


Assuntos
Sistemas de Informação Geográfica , Energia Renovável , Tomada de Decisões , Técnicas de Apoio para a Decisão , Grécia
14.
Environ Sci Pollut Res Int ; 26(32): 33236-33259, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31515770

RESUMO

Renewable sources are relevant in a country's energy planning because they are linked to the creation of opportunities for technological, economic, and productive development guided by the principles of sustainability. Thus, the aim of this study was to investigate the relation between electric generation capacity by renewable and non-renewable energies and Brazilian socioeconomic variables. The analysis of the interrelationships between electricity generation capacity and economic growth in Brazil, from April 2009 to March 2017, was carried out by the vector autoregressive and autoregressive distributed lag methodologies. It was verified that the variance of employment is explained by renewable sources: hydroelectric in 7.71%, biomass in 1.99%, wind energy in 3.13%, and solar energy in 10.58%. While, the GDP variance is explained in 3.15% by hydroelectric energy, 0.06% by biomass, 1.70% by wind energy, and 17.38% by solar energy. The export variance is explained by renewable sources: hydroelectric 2.48%, biomass 0.39%, wind energy 2.34%, and solar energy 17.58%. Finally, the variance of the minimum wage is explained by hydroelectric energy in 1.48%, biomass in 5.09%, wind energy in 9.09%, and solar energy in 10.67%. An ARDL (1, 1, 2, 0, 0, 0, 3, 2, 0, 2, 0, 2) model was also adjusted for natural gas, with AIC (13.082) and BIC (13.739), and the ARDL (1, 0, 1, 0, 0, 0, 0, 0, 3, 0, 0, 4) model adjusted for hydroelectric power, with AIC (13.633) and BIC (14.189), considering the variables' order cited above. Through the adjustment of the ARDL model, it was verified that there is a long-term influence of socioeconomic variables on electricity production variables, both renewable and non-renewable ones. The analysis of the impulse response function and the variance decomposition allowed us to verify that the installed capacity for production of electric energy exerts influence on Brazilian socioeconomic variables considered in this study.


Assuntos
Desenvolvimento Econômico , Energia Renovável , Biomassa , Brasil , Dióxido de Carbono/análise , Eletricidade , Gás Natural , Energia Solar , Vento
15.
Environ Sci Pollut Res Int ; 26(32): 33202-33215, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31520388

RESUMO

Hydrogen can play a crucial role in increasing energy security and reducing greenhouse gases in Pakistan. Hydrogen can only be a clean and sustainable fuel if it is generated from renewable energy sources (RES). Thus, it is important to evaluate viability of RES for hydrogen production. This study developed a two-stage fuzzy MCDM (Multi-criteria decision-making) approach to select the most efficient RES. In the first stage, fuzzy analytical hierarchy process (AHP) obtained the relative weights of four criteria for the selection of best RES. These criteria included commercial potential, environmental impacts, economic benefits, and social acceptance. In the second stage, data envelopment analysis (DEA) measured the relative efficiency of RES using weights of criteria as outputs, and the cost of RES-based electricity generation as input. The results indicated that wind and solar are the most efficient sources of hydrogen production in Pakistan. Municipal solid waste (MSW) and biomass can also be considered a feedstock for the hydrogen economy. Geothermal reported to be the less efficient source and thus is not recommended at present. Sensitivity analysis confirmed the robustness of results obtained using the developed framework.


Assuntos
Hidrogênio , Energia Renovável , Tomada de Decisões , Eletricidade , Meio Ambiente , Paquistão , Resíduos Sólidos , Vento
16.
Environ Sci Pollut Res Int ; 26(32): 33387-33398, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31522394

RESUMO

This study aims to investigate the effect of economic globalization and technological changes on the environmental degradation of the South Asian countries over the time span of 1975-2017. Westerlund (Oxf Bull Econ Stat 69:709-748, 2007) cointegration test is employed to estimate the presence of long-run relationship between globalization, technological changes, and environmental degradation. To determine the validity of the Environmental Kuznets Curve, this study employs panel autoregressive distributional lag (ARDL) model. Empirical findings of this study yield the inverted U-shaped association between globalization, technological changes, and environmental degradation which validate that EKC holds in the South Asian countries. The results indicate that the measures of globalization such as FDI, trade openness, and KOF index have positive and statistically significant effect on ecological footprint. However, technological changes measured as patents registered by residents have an insignificant impact on environmental quality. This study infers that the globalization has increased environmental degradation through unsustainable economic development in South Asian countries. These countries should shift to renewable energy resources to protect the environment and mitigate greenhouse gas emissions.


Assuntos
Desenvolvimento Econômico , Energia Renovável/economia , Grupo com Ancestrais do Continente Asiático , Dióxido de Carbono/análise , Ecologia , Meio Ambiente , Gases de Efeito Estufa , Humanos , Índia , Internacionalidade
17.
Nat Commun ; 10(1): 4282, 2019 09 19.
Artigo em Inglês | MEDLINE | ID: mdl-31537786

RESUMO

Microbial biophotovoltaics (BPV) offers a biological solution for renewable energy production by using photosynthetic microorganisms as light absorbers. Although abiotic engineering approaches, e.g., electrode modification and device optimization, can enhance the electrochemical communication between living cells and electrodes, the power densities of BPV are still low due to the weak exoelectrogenic activity of photosynthetic microorganisms. Here, we develop a BPV based on a D-lactate mediated microbial consortium consisting of photosynthetic cyanobacteria and exoelectrogenic Shewanella. By directing solar energy from photons to D-lactate, then to electricity, this BPV generates a power density of over 150 mW·m-2 in a temporal separation setup. Furthermore, a spatial-temporal separation setup with medium replenishment enables stable operation for over 40 days with an average power density of 135 mW·m-2. These results demonstrate the electron flow constrained microbial consortium can facilitate electron export from photosynthetic cells and achieve an efficient and durable power output.


Assuntos
Fontes de Energia Bioelétrica/microbiologia , Eletricidade , Energia Renovável , Shewanella/metabolismo , Synechococcus/metabolismo , Técnicas Eletroquímicas , Ácido Láctico/metabolismo , Fótons , Shewanella/genética , Energia Solar , Synechococcus/genética
18.
Artigo em Inglês | MEDLINE | ID: mdl-31492026

RESUMO

This work is proposed to examine the relationships between energy consumption, biodiversity, and economic growth for China and five countries in the Indochina Peninsula, which are Cambodia, Laos, Myanmar, Thailand, and Vietnam, who also belong to Lancang-Mekong Cooperation, for the time span from 1991 to 2014. For this purpose, this work adopted autoregressive distributed lag (ARDL) through a dynamic simulation process. The estimation outcomes indicate that the nexus of the economic growth and energy consumption are diversified in fossil energy consumption and renewable consumption, respectively. The results are consistent with the fact that renewable energy is an alternative to fossil fuels, and traditional energy is still in the dominant position. This work is expected to serve as a first-hand examination on Lancang-Mekong Cooperation by adding innovative perspectives into existing research. Meanwhile, policy implications will also be discussed in this work.


Assuntos
Biodiversidade , Desenvolvimento Econômico , Energia Renovável , Ásia Sudeste , Dióxido de Carbono/análise , Combustíveis Fósseis
19.
Environ Sci Pollut Res Int ; 26(31): 31632-31643, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31485948

RESUMO

In recent years, BRICS countries have attached great importance to renewable energy development and actively promoted the shift of economic structure towards service industry, in order to achieve the decoupling of economic development from carbon emissions. However, relevant studies mostly neglect the cross-sectional dependence and heterogeneity issues, which may cause biased results. Therefore, this paper selects the panel data of BRICS countries during 1996-2017 and employs the common correlated effects mean group (CCEMG) method, which are based on the cross-sectional dependence and heterogeneity assumptions, to explore the influence of renewable energy consumption and service industry development on CO2 emissions in BRICS countries. Besides, we also use the random effects model and pooled estimated generalized least squares model, as well as fully modified OLS model for comparison. The results indicate that enhancing the proportion of renewable energy consumption in the total energy consumption is an effective measure to reduce CO2 emissions in BRICS countries. Moreover, the steadily rising contribution of service industry to economic growth in BRICS countries during the sample period does not necessarily contribute to reduce CO2 emissions.


Assuntos
Dióxido de Carbono/química , Carbono/química , Energia Renovável/economia , Estudos Transversais , Desenvolvimento Econômico , Desenvolvimento Industrial , Análise dos Mínimos Quadrados
20.
Environ Sci Pollut Res Int ; 26(31): 31856-31872, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31489549

RESUMO

In recent decades, climate change and environmental pollution have been at the center of global environmental debates. Nowadays, researchers have turned their attention to the linkage between real output and environmental quality and test the environmental Kuznets curve. Majority of the studies focus on a single pollutant aspect and measure the deterioration of the environment through carbon emission (CO2) only. In contrary, the current study uses a comprehensive proxy, ecological footprint, to measure the environmental quality of the sixteen Central and Eastern European Countries (CEECs). The aim of this paper is to discover the impact of financial development, economic growth, and energy consumption (renewable and non-renewable) on the environment. In addition, for the first time, the current study includes biocapacity and human capital in the growth-energy-environment nexus in the case of CEECs. In doing so, we used annual data of sixteen CEE countries in perspective of the One Belt One Road (OBOR) initiative and cover the period of 1991-2014. For reliable findings, this study focuses on second-generation econometric approaches to check stationarity, cross-sectional dependency, and co-integration among the model parameters. The long-run estimations of the "Dynamic Seemingly Unrelated-co-integration Regression" (DSUR) signify that the effect of economic growth on ecological footprint is not stable and validate N-shaped relationship for cubic functional form between per capita income and ecological footprint (environmental quality). Empirical evidence divulges that financial development and energy use significantly contribute to environmental degradation while renewable energy improves environmental quality by declining ecological footprint significantly. Moreover, the significant effects of biocapacity and human capital are positive and negative on the ecological footprint, respectively. In robustness check through the "Feasible Generalized Least Square" (FGLS) and "Generalized Method of Moment" (GMM) models, we found consistent result. Lastly, the "Dumitrescu-Hurlin (D-H) Panel Causality Test" demonstrates that two-way causal relationship exists between EF and GDP, EF and FD, EF and EU, EF and BC, and EF and HC, while one-way causality is running from RE to EF. This study puts the present scenario of CEE economies in front of the policymakers and suggests that they should consider the vital role of renewable energy and human capital to get sustainability.


Assuntos
Dióxido de Carbono/análise , Desenvolvimento Econômico , Fontes Geradoras de Energia/estatística & dados numéricos , Fontes Geradoras de Energia/economia , Meio Ambiente , Poluição Ambiental , Europa (Continente) , Produto Interno Bruto/estatística & dados numéricos , Humanos , Renda , Cooperação Internacional , Análise dos Mínimos Quadrados , Modelos Econométricos , Energia Renovável/economia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA