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1.
Chemosphere ; 239: 124832, 2020 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-31726524

RESUMO

Aqueous arsenate [As(V)] was removed using an aluminum-based adsorbent (ABA) and coal mine drainage sludge coated polyurethane (CMDS-PU) prepared using alum and coal mine sludge, respectively. Their As(V) removal efficiencies were compared with each other and granular ferric hydroxide (GFH). The mineralogy and surface chemistry of materials were determined using wavelength dispersive X-ray fluorescence (WD XRF) and Fourier transform infrared spectroscopy (FTIR), respectively. The angle-resolved X-ray photoelectron spectroscopy (AR-XPS) studies confirmed As(V) retention on the adsorbent surfaces. The adsorption kinetics data were fitted to pseudo second-order rate equation. The faster As(V) uptake kinetics of GFH and ABA (GFH > ABA > CMDS-PU) were attributed to their large pore volume and mesoporous nature. Langmuir adsorption capacities of 22, 31 and 10 mg/g, were achieved for GFH, ABA and CMDS-PU, respectively. As(V) adsorption on GFH, ABA and CMDS-PU was endothermic. GFH and ABA were efficient over a wide pH range (3-10). In column studies, GFH, ABA, and CMDS-PU successfully treated 23625, 842, and 158 bed volumes (BVs) and 2094, 6400, and 17 BVs of As(V)-contaminated water with 9.5 and 27 EBCT, respectively (at pH = 6.0, Asi = 600 µg/L). The GFH and ABA have a potential to be used at large-scale aqueous phase As(V) remediation.


Assuntos
Alumínio/química , Arseniatos/análise , Compostos Férricos/química , Poliuretanos/química , Esgotos/química , Poluentes Químicos da Água/análise , Purificação da Água/métodos , Adsorção , Indústria do Carvão Mineral , Minas de Carvão , Concentração de Íons de Hidrogênio , Cinética , Espectroscopia Fotoeletrônica , Água/química
2.
Chemosphere ; 236: 124337, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31330433

RESUMO

The total accumulative stockpiles of gangue from long-term coal mining exceed 1 billion tons and occupy 182 square kilometers, and 50 million tons of additional gangue are generated per year in Shanxi, a major energy province in China. The objective of this study was to examine whether exposure to village soils affected by gangue stacking would disrupt thyroid hormone system homeostasis and eventually affect endocrine system and development, using zebrafish (Danio rerio) as a model organism. The zebrafish embryos were exposed to village soil leachates at 0, 1:9, 1:3 and 1:1 from 1 to 120 h postfertilization (hpf), and the sample caused a dose-dependent increase in the mortality and malformation rate, and decrease in the heart rate, hatching rate and body length of zebrafish larvae. Importantly, the soil leachate alleviated the whole-body triiodothyronine (T3) and thyroxine (T4) levels at higher concentrations, and altered the expression of the hypothalamic-pituitary-thyroid (HPT) axis-regulating genes crh, trh, tshß, nis, tg, nkx2.1, pax8, hhex, ttr, dio1, dio2, ugt1ab, trα, and trß and the PAH exposure-related genes ahr2 and cyp1a. These findings highlight the potential risk of thyroid hormone disruption and developmental toxicity from soil samples around coal gangue stacking areas.


Assuntos
Indústria do Carvão Mineral/tendências , Solo/química , Hormônios Tireóideos/efeitos adversos , Hormônios Tireóideos/metabolismo , Peixe-Zebra/embriologia , Animais
3.
PLoS One ; 14(6): e0217250, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31188841

RESUMO

This paper aims to demonstrate the impact of coal enterprises' vertical integration on the performance of innovation corporate social responsibility (ICSR) and to elaborate its specific transmission path through financing structure and market power. This paper takes the data of A-share listed coal company from 2008 to 2017 as samples, uses input-output table method to measure the degree of vertical integration, and explores the relationship between the four factors through multiple linear regression and Bootstrap method. We found that: (1) the vertical integration of coal enterprises has positive incentives for the promotion of ICSR. (2) Financing structure and market power play a chain intermediary role in this process of incentive. (3) In areas with high marketization process, vertical integration has more significant incentive effect on ICSR. The paper extends the research on the relationship between vertical integration and innovation, which provides a reference for the improvement of China's supply-side reform and corporate social responsibility (CSR) fulfillment policy. It is helpful to promote the sustainable development of the coal industry, stimulate the innovation vitality of enterprises, and improve the fulfillment of CSR.


Assuntos
Indústria do Carvão Mineral/organização & administração , Invenções/economia , Responsabilidade Social , China , Modelos Econômicos
4.
Environ Sci Pollut Res Int ; 26(6): 5925-5933, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-30613875

RESUMO

Coal gasification fine slag (CGFS) is a kind of industrial waste that is generated from entrained-flow coal gasification with a high content of 0.5 M hydrochloric acid (HCl)-extractable silicon (Si). Si fertilizer has been widely used in agriculture to enhance the mechanical properties and yield of crops. An evaluation was actualized by analyzing HCl-extractable Si fractions and X-Ray diffraction (XRD) of different treatments (acid, alkali, salt, grind, calcination, temperature, and time) for CGFS samples and other Si source materials. The results showed that CGFS had stable HCl-extractable Si concentrations of 60 ± 2 g/kg except in the calcination treatment, which decreased the content of extractable Si by 28.2%. Furthermore, under the same processing conditions, CGFS showed a higher content of extractable Si than other Si source samples. Moreover, a rice growth experiment was carried out for 120 days in a different mass incorporation of CGFS in the greenhouse. The strength index and total Si content of the stem proved that using CGFS at 5 wt.% markedly promoted the growth of rice. The study indicated that an appropriate application of CGFS as a Si resource to an agricultural field could be considered as a viable option for safe disposal of this industrial waste.


Assuntos
Agricultura/métodos , Fertilizantes , Resíduos Industriais/análise , Dióxido de Silício/análise , Biodegradação Ambiental , Carvão Mineral , Indústria do Carvão Mineral , Produtos Agrícolas , Oryza , Silício , Solo
5.
Artigo em Inglês | MEDLINE | ID: mdl-30406705

RESUMO

Pressure filtration of coal refuse slurry has the potential to provide a concentrated solids stream that can be stacked, thereby offering multiple environmental benefits. However, potential leachates from the solids stream can impact the environment. In that context, this study performed preliminary investigations of the application of zeolite-based additives to adsorb metals leaching from coal refuse slurry at low pH. Additives were added to the coal refuse slurry, which was filtered using bench- and lab-scale pressure filtration units. Results indicated that the overall filtrate flux and cake moisture characteristics were not significantly affected by the addition of additives up to 20% (by weight of solids). It was shown that adsorption as high as 80% was achieved by using the additives to capture iron. It was concluded that the finer additive with less silicon content was more effective in capturing iron. The results showed that the thickener feed stream leached out less iron than the thickener underflow stream. The adsorption process was not significantly affected by slight variations in initial iron concentration in the solution. The use of lower pH water on the filter cakes treated with the additive showed minimal release of iron and manganese into the aqueous phase.


Assuntos
Cinza de Carvão/química , Filtração/métodos , Ferro/farmacocinética , Esgotos/química , Purificação da Água/métodos , Zeolitas/química , Adsorção , Carvão Mineral/análise , Indústria do Carvão Mineral , Filtração/instrumentação , Ferro/química , Manganês/química , Manganês/farmacocinética , Metais/farmacocinética , Pressão , Água/química , Poluentes Químicos da Água/química , Poluentes Químicos da Água/isolamento & purificação , Poluentes Químicos da Água/farmacocinética , Purificação da Água/instrumentação
6.
Environ Sci Pollut Res Int ; 26(18): 17939-17949, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29260477

RESUMO

Scientifically evaluating the level of low-carbon development in terms of theoretical and practical significance is extremely important to coal enterprise groups for implementing national energy-related systems. This assessment can assist in building institutional mechanisms that are conducive for the economic development of coal business cycle and energy conservation as well as promoting the healthy development of coal enterprises to realize coal scientific development and resource utilization. First, by adopting systematic analysis method, this study builds low-carbon development evaluation index system for coal enterprise groups. Second, to determine the weight serving as guideline and criteria of the index, analytic hierarchy process (AHP) is applied using integrated linear weighted sum method to evaluate the level of low-carbon development of coal enterprise groups. Evaluation is also performed by coal enterprise groups, and the process comprises field analysis and evaluation. Finally, industrial policies are proposed regarding the development of low-carbon coal conglomerate strategies and measures. This study aims mainly to guide the low-carbon development of coal enterprise groups, solve the problem of coal mining and the destruction of ecological environment, support the conservation of raw materials and various resources, and achieve the sustainable development of the coal industry.


Assuntos
Carbono , Indústria do Carvão Mineral , Carvão Mineral , Poluição Ambiental , Carvão Mineral/economia , Indústria do Carvão Mineral/economia , Minas de Carvão , Desenvolvimento Econômico , Poluição Ambiental/economia
9.
Ecotoxicol Environ Saf ; 165: 434-439, 2018 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-30218966

RESUMO

The Wuda coal fire area in Inner Mongolia, China, has existed for 50 years and been controlled by digging and backfilling for many years. However, few studies have focused on its impact on the local environmental and ecological systems due to emission of organic contaminants from the backfilled region. In the study, topsoil samples were collected at a 0-5 cm depth from the backfilled region of the Wuda coal fire area, which has existed for five years. The samples were analyzed for 16 priority control contaminants, namely polycyclic aromatic hydrocarbons (PAHs), with a standard operation procedure and high-performance liquid chromatograph (HPLC). The results showed that the total mass contentration of 16 PAHs (∑16PAHs) ranged from 279 to 8258 µg kg-1, with an average value of 2853 ±â€¯2948 µg kg-1, which exceeded the stipulated limit for heavily contaminated soil (1000 µg kg-1). Among the 16 PAHs, 2- and 3-ring compounds accounted for more than half of ∑16PAHs. Furthermore, the results show that the main contaminants were the naphthalene (Nap), phenanthrene (Phe), pyrene (Pyr), chrysene (Chr), and benzo[b]fluoranthene (BbF) in this area (24.8%, 51.1%, 3.9%, 4.5%, and 5.7% of ∑16PAHs, respectively). The diagnostic ratio of FLA/(FLA + PYR) exceeded 0.4 and IcdP/(IcdP + BghiP) was less than 0.5, indicating gentle smoldering or spontaneous combustion of coal fire, which differs from traditional coal burning. The environmental health risk or specifically the cancer risk (CR), calculated using the surface soil of the backfilled region, was 2.84 × 10-6 for adults and 1.01 × 10-6 for children, thus indicating potential cancer risks. Therefore, PAHs pollution in the surface soil of the backfilled region in the studied coal fire area is an issue that deserves urgent attention.


Assuntos
Indústria do Carvão Mineral , Hidrocarbonetos Policíclicos Aromáticos/análise , Poluentes do Solo/análise , Solo/química , Adulto , Criança , China , Carvão Mineral/análise , Monitoramento Ambiental/métodos , Poluição Ambiental/efeitos adversos , Humanos , Neoplasias/etiologia , Medição de Risco
10.
Environ Int ; 120: 480-488, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30145312

RESUMO

Emissions (particularly aromatic compounds) from coal industries and biomass fuels combustion lead to high health risks for neighboring residents. To investigate the association of polycyclic aromatic hydrocarbons (PAHs) and benzene, toluene, ethylbenzene and 1,2-dimethylbenzene (BTEX) exposure with lung function and respiratory symptoms among adults and children near the coal-chemical industry in Northern China, adults and children from a county dotted with coal chemical industry were chosen as subjects for investigation (investigated area, IR). The control group consisted of adults and children from an agricultural county (control area, CR). The environmental and urinary PAH and BTEX levels of adults and children were determined by isotope dilution liquid chromatography coupled with tandem mass spectrometry. The Mann-Whitney U test and multivariate linear regression models were used to analyze the relationship between pollutant exposure and the respiratory system. The results showed that in an ambient environment, levels of PAHs and BTEX in the IR were significantly higher than those in the CR. Particularly, the concentration profiles for air samples were IR > CR and indoor > outdoor. Both for adults and children, the geometric (GM) concentrations of urinary PAHs and BTEX from the IR were significantly higher than those measured in the CR. Additionally, the urinary PAH exposure level profiles of smokers were higher than those of nonsmokers, indicating that indoor air and smoking were both important nonoccupational exposure sources. The decline of the forced expiratory in the first second (FEV1, %) and the forced expiratory middle flow rate (FEF25%) in children were associated with increasing urinary PAH metabolite levels (p < 0.05). The increase in urinary 1-OHN, 3-OHPhe, 4-OHPhe and 1-OHP levels could be linked to a decrease in FEV1 (r = -0.179, p < 0.05) and FEF25% with the coefficient of -0.166, -0.201 and -0.175 (p < 0.05), respectively. Medical examinations and lung function tests indicated that residents in the IR had higher occurrences of chest inflammation or declining lung function than residents in the CR. Moreover, exposure to PAHs and BTEX could decrease child lung function, though decreased lung function was not observed in adults. Both urinary monitoring and lung function data showed that children were more sensitive to PAH and BTEX exposure than adults.


Assuntos
Poluentes Atmosféricos/química , Derivados de Benzeno/análise , Exposição Ambiental/análise , Hidrocarbonetos Policíclicos Aromáticos/análise , Adulto , Idoso , Poluentes Atmosféricos/análise , Biomarcadores/urina , Indústria Química , Criança , China , Indústria do Carvão Mineral , Feminino , Volume Expiratório Forçado , Humanos , Masculino , Fluxo Máximo Médio Expiratório , Pessoa de Meia-Idade , Adulto Jovem
11.
Biomed Environ Sci ; 31(6): 448-453, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-30025557

RESUMO

The aim of this study was to estimate the association between occupational, environmental, behavioral risk factors, and active pulmonary tuberculosis (PTB) among coal workers' pneumoconiosis (CWP) patients. A matched case-control study was conducted in 86 CWP patients with active PTB and 86 CWP controls without TB. A standardized questionnaire was used for risk factors assessment. Conditioned logistic regression analysis was used to identify associations between the risk factors and active PTB among CWP patients. The results showed that the stage of CWP, poor workplace ventilation, family history of TB, and exposure to TB were independent risk factors for active PTB in patients with CWP with which recommendations for improving work environments, and for case finding activities in patients with CWP could be made.


Assuntos
Antracose/complicações , Indústria do Carvão Mineral/normas , Doenças Profissionais/complicações , Exposição Ocupacional/análise , Tuberculose Pulmonar/etiologia , Local de Trabalho/normas , Antracose/diagnóstico , Antracose/epidemiologia , Estudos de Casos e Controles , China , Poeira/análise , Humanos , Modelos Logísticos , Masculino , Doenças Profissionais/diagnóstico , Doenças Profissionais/epidemiologia , Fatores de Risco , Inquéritos e Questionários , Tuberculose Pulmonar/diagnóstico , Tuberculose Pulmonar/epidemiologia
12.
Artigo em Chinês | MEDLINE | ID: mdl-29996254

RESUMO

Objective: To grasp the present situation of occupational hazards of coal dust in our country, understand our country coal dust workers' occupational health risks, provide information based on evidence and analysis for the government and organize to effectively deal with the current status of high coal workers pneumoconiosis incidence in China, and protect coal dust workers' occupational health. Methods: The research object is the " mining-transportation-use" of coal industrial chain, referring to 33 units. Use field investigation to obtain the coal dust exposure, dust prevention measures and the occupational health data of study object. Use quantitative evaluation method of International council on mining and metals occupational health risk assessment model (ICMM method) and occupational hazard risk index method (index method) , with coal workers pneumoconiosis as health outcomes, to evaluate the coal dust occupational health risks of coal industrial chain. Results: The free silica content of partial coal dust in China is more than 10%, and even to 19.5%. coal dust concentration in workplaces, such as excavating system of dust coal mining (total dust: 22.1~46.5 mg/m(3), respiratory dust: 8.4~17.7 mg/m(3)) , dumper (total dust: 25.2 mg/m(3), respiratory dust: 6.9 mg/m(3)) , transfer tower (total dust: 35.4 mg/m(3)) of coal transportation and belt coal plough device of coal use (total dust: 36.3 mg/m(3), respiratory dust: 14.0 mg/m(3)) , are much higher than those in other workplaces, and coal dust concentration of workers in these places (2.6~9.3 mg/m(3)) are much higher than those in other places, which are statistically significant. ICMM method evaluation results show that the risk value of excavating system is between 504~1 089, and the risk value of comprehensive mining system is between 347~2 040, which are far statistically significant higher than that of other systems. Index method evaluation results (excavating system risk value between 3.1~9.7, fully mechanized system risk value between 3.7~9.3) , are basically identical with ICMM method (correlation coefficient r=0.857, P<0.01) . The new cases of coal worker pneumoconiosis are distributed in three post of coal mining, excavating and coal mine mixing. Conclusion: Coal-dust hazards are widely distributed in the coal "mining, transportation, and use" industrial chain, which of the underground coal mine is as serious as intolerable, meanwhile the risk of other industrial chain is basically can tolerable. The high coal dust concentration and the high risk of coal dust occupational hazard are concentrated in the excavating system and the comprehensive mining system. It is recommended to start the study on risk assessment and risk response of coal dust health hazard at the national level, and the occupational exposure limit of coal dust should be established according to the content of free silica.


Assuntos
Indústria do Carvão Mineral , Carvão Mineral/efeitos adversos , Poeira/análise , Saúde do Trabalhador , Pneumoconiose/epidemiologia , Medição de Risco/métodos , China/epidemiologia , Minas de Carvão , Humanos , Exposição Ocupacional
13.
Artigo em Inglês | MEDLINE | ID: mdl-29701715

RESUMO

This paper studies the occupational safety and health management methods as well as risk control technology associated with the coal mining industry, including daily management of occupational safety and health, identification and assessment of risks, early warning and dynamic monitoring of risks, etc.; also, a B/S mode software (Geting Coal Mine, Jining, Shandong, China), i.e., Coal Mine Occupational Safety and Health Management and Risk Control System, is developed to attain the aforementioned objectives, namely promoting the coal mine occupational safety and health management based on early warning and dynamic monitoring of risks. Furthermore, the practical effectiveness and the associated pattern for applying this software package to coal mining is analyzed. The study indicates that the presently developed coal mine occupational safety and health management and risk control technology and the associated software can support the occupational safety and health management efforts in coal mines in a standardized and effective manner. It can also control the accident risks scientifically and effectively; its effective implementation can further improve the coal mine occupational safety and health management mechanism, and further enhance the risk management approaches. Besides, its implementation indicates that the occupational safety and health management and risk control technology has been established based on a benign cycle involving dynamic feedback and scientific development, which can provide a reliable assurance to the safe operation of coal mines.


Assuntos
Indústria do Carvão Mineral , Minas de Carvão , Saúde do Trabalhador , Gestão de Riscos/métodos , Acidentes de Trabalho/prevenção & controle , China , Carvão Mineral , Humanos , Software , Tecnologia
14.
Matern Child Health J ; 22(9): 1306-1318, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-29500783

RESUMO

Objectives At present, coal seam gas (CSG) is the most common form of unconventional natural gas development occurring in Australia. Few studies have been conducted to explore the potential health impacts of CSG development on children and adolescents. This analysis presents age-specific hospitalisation rates for a child and adolescent cohort in three study areas in Queensland. Methods Three geographic areas were selected: a CSG area, a coal mining area, and a rural area with no mining activity. Changes in area-specific hospital admissions were investigated over the period 1995-2011 in a series of negative binomial regression analyses for 19 International Classification of Diseases (ICD) chapters, adjusting for sociodemographic factors. Results The strongest associations were found for respiratory diseases in 0-4 year olds (7% increase [95% CI 4%, 11%] and 6% increase [95% CI 2%, 10%] in the CSG area relative to the coal mining and rural areas, respectively) and 10-14 year olds (9% increase [95% CI 1%, 18%] and 11% increase [95% CI 1%, 21%] in the CSG area compared to the coal mining and rural areas, respectively). The largest effect size was for blood/immune diseases in 5-9 year olds in the CSG area (467% increase [95% CI 139%, 1244%]) compared to the rural area with no mining activity. Conclusions for Practice Higher rates of hospitalisation existed in the CSG area for certain ICD chapters and paediatric age groups, suggesting potential age-specific health impacts. This study provides insights on associations that should be explored further in terms of child and adolescent health.


Assuntos
Indústria do Carvão Mineral/estatística & dados numéricos , Exposição Ambiental/efeitos adversos , Hospitalização/estatística & dados numéricos , Gás Natural , Campos de Petróleo e Gás , População Rural , Adolescente , Austrália , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Queensland/epidemiologia , Adulto Jovem
15.
Proc Natl Acad Sci U S A ; 115(11): 2693-2698, 2018 03 13.
Artigo em Inglês | MEDLINE | ID: mdl-29483255

RESUMO

Environmental legislation and proper implementation are critical in environmental protection. In the past, beehive coke ovens (BCOs) were popular in China, resulting in enormous emissions of benzo[a]pyrene (BaP), a common indicator of carcinogenic polycyclic aromatic hydrocarbons. BCOs were banned by the Coal Law in 1996. Although BCO numbers have declined since the ban, they were not eliminated until 2011 due to poor implementation. Here, we present the results of a quantitative evaluation of the health effects of historical BCO operation, the health benefits of the ban, and the adverse impacts of the poor implementation of the ban. With only limited official statistics available, historical and geospatial data about BCOs were reconstructed based on satellite images. Emission inventories of BaP from BCOs were compiled and used to model atmospheric transport, nonoccupational population exposure, and induced lung cancer risk. We demonstrated that more than 20% of the BaP in ambient air was from BCOs in the peak year. The cumulative nonoccupational excess lung cancer cases associated with BaP from BCOs was 3,500 (±1,500) from 1982 to 2015. If there was no ban, the cases would be as high as 9,290 (±4,300), indicating the significant health benefits of the Coal Law. On the other hand, if the ban had been fully implemented immediately after the law was enforced in 1996, the cumulative cases would be 1,500 (±620), showing the importance of implementing the law.


Assuntos
Poluentes Atmosféricos/análise , Poluição do Ar/legislação & jurisprudência , Indústria do Carvão Mineral/instrumentação , Indústria do Carvão Mineral/legislação & jurisprudência , Coque/análise , Poluentes Atmosféricos/toxicidade , Poluição do Ar/prevenção & controle , Benzo(a)pireno/análise , Benzo(a)pireno/toxicidade , China , Coque/toxicidade , Monitoramento Ambiental/legislação & jurisprudência , Humanos
16.
J Biosci Bioeng ; 125(6): 710-716, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29426801

RESUMO

Microalgae cultivation using wastewater is an approach for simultaneous wastewater treatment and biofuels/chemicals productions. In this study, three microalgae species Chorella vulgaris ESP-31, Chorella sorokiniana CY-1 and Scenedesmus sp. were cultivated using coke-making wastewater generated from a steel-making company. Of these, C.vulgaris ESP-31 had the best tolerance towards wastewater, with maximal biomass concentration of 2.82 g/l and lipid productivity of 32.3 mg/l/d. The highest biomass concentration 3.98 g/l and lipid productivity of 47.1 mg/l/d was obtained in 20% wastewater. Immobilization approach was applied to boost biomass growth and lipid production. Both maximal biomass growth (5.17 g/l) and lipid productivity (68.4 mg/l/d) was significantly enhanced with activated charcoal addition. Semi-batch cultivation resulted in stable biomass production and lipid productivity of 5.18 g/l and 77.3 mg/l/d, respectively. This study has revealed that C. vulgaris ESP-31 is a potential candidate for growth in coke making wastewater and biofuel production.


Assuntos
Chlorella vulgaris/metabolismo , Coque , Recuperação e Remediação Ambiental/métodos , Lipídeos/biossíntese , Engenharia Metabólica/métodos , Águas Residuárias , Biocombustíveis , Biomassa , Chlorella vulgaris/crescimento & desenvolvimento , Indústria do Carvão Mineral/métodos , Metalurgia/métodos , Microalgas/crescimento & desenvolvimento , Microalgas/metabolismo , Aço , Águas Residuárias/química , Águas Residuárias/microbiologia
17.
J Public Health Policy ; 39(1): 57-67, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-29116190

RESUMO

Our research estimated the economic costs of possible cases of coal workers' pneumoconiosis (CWP) among redeployed coal workers from the Fuxin Mining Industry Group. The study cohort included 19,116 coal workers between 1965 and 2012. We estimated direct and indirect economic costs due to possible current and future CWP cases among redeployed coal workers. We found as of 2012 that 141 possible CWP cases might have resulted in economic costs of $37.52 million ($33.84 million were direct and $3.68 million indirect). Moreover, 221 possible future CWP cases would result in economic costs of $63.89 million ($57.20 million direct and $6.69 million indirect). Neither the Fuxin Mining Industry Group nor Fuxin could cover the costs of CWP screening and diagnosis, or social security payments for redeployed coal workers. We suggest that China's national government help Liaoning Province and Fuxin focus on health care and social security.


Assuntos
Antracose/economia , Minas de Carvão/estatística & dados numéricos , Efeitos Psicossociais da Doença , Doenças Profissionais/economia , China , Indústria do Carvão Mineral , Estudos de Coortes , Humanos , Masculino , Pessoa de Meia-Idade
19.
Environ Sci Pollut Res Int ; 24(29): 23290-23298, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-28836074

RESUMO

The rapid development of coal industry in Shanxi province in China has important effects on its economic development. A large amount of money has been invested into the coal industry and other related industries during the recent years. However, research on the investment effect of Shanxi's coal industry was rare. In order to analyze the investment effect of coal industry, based on the crowding-out effect model, cointegration test, and the data available in Shanxi Statistical Yearbooks, this paper calculates the effect between coal industry investment and other 17 industry investment. The results show that the investment of coal industry produces crowding-out effect on food industry, building materials industry, and machinery industry. Increasing 1% of the coal industry investment can reduce 0.25% of the food industry investment, or 0.6% of building materials industry investment, or 0.52% of the machinery industry investment, which implies that Shanxi province should adjust coal industrial structure, promote the balance development of coal industry and other industries, so as to promote its economic growth.


Assuntos
Indústria do Carvão Mineral/economia , Minas de Carvão/economia , Desenvolvimento Econômico/tendências , Investimentos em Saúde/tendências , Modelos Teóricos , China
20.
Artigo em Chinês | MEDLINE | ID: mdl-28614927

RESUMO

Objective: To evaluate the applicability of quantitative grading method (GBZ/T 229.1-2010) and occupational hazard risk index method in coal dust occupational health risk assessment. Methods: Taking 4 coal mines as the research object of risk assessment and making occupational health field testing and investigation. Based on two risk assessment methods, we analysed the health risk levels of 20 occupations which were exposed to coal dust in workplaces. Results: Coal dust working post had different risk levels in 4 coal mines, the post of higher risk level were mainly concentrated in the underground workplace of coal mine, especially the post of coal mining and tunneling system. The two risk assessment results showed that the risk levels of coal-mining machine drivers and tunneling machine drivers were the highest. The risk levels of coal dust working post used by two risk assessment methods had no significant difference (P>0.05) and were highly correlated (r=0.821, P<0.001) . Evaluation results of two risk assessment methods were supported by the field investigation and literatures. Conclusion: The two risk assessment methods can be used in coal dust occupational health risk assessment.


Assuntos
Indústria do Carvão Mineral , Carvão Mineral/efeitos adversos , Poeira/análise , Saúde do Trabalhador , Medição de Risco/métodos , China/epidemiologia , Minas de Carvão , Humanos , Exposição Ocupacional
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