Futuristic advancements in phytoremediation of endocrine disruptor Bisphenol A: A step towards sustainable pollutant degradation for rehabilitated environment.

Bisphenol A (BPA) accumulates in the environment at lethal concentrations because of its high production rate and utilization. BPA, originating from industrial effluent, plastic production, and consumer products, poses serious risks to both the environment and human health. The widespread aggregation of BPA leads to endocrine disruption, reactive oxygen species-mediated DNA damage, epigenetic modifications and carcinogenicity, which can disturb the normal homeostasis of the body. The living being in a population is subjected to BPA exposure via air, water and food. Globally, urinary analysis reports have shown higher BPA concentrations in all age groups, with children being particularly susceptible due to its occurrence in items such as milk bottles. The conventional methods are costly with a low removal rate. Since there is no proper eco-friendly and cost-effective degradation of BPA reported so far. The phytoremediation, green-biotechnology based method which is a cost-effective and renewable resource can be used to sequestrate BPA. Phytoremediation is observed in numerous plant species with different mechanisms to remove harmful contaminants. Plants normally undergo several improvements in genetic and molecular levels to withstand stress and lower levels of toxicants. But such natural adaptation requires more time and also higher concentration of contaminants may disrupt the normal growth, survival and yield of the plants. Therefore, natural or synthetic amendments and genetic modifications can improve the xenobiotics removal rate by the plants. Also, constructed wetlands technique utilizes the plant's phytoremediation mechanisms to remove industrial effluents and medical residues. In this review, we have discussed the limitations and futuristic advancement strategies for degrading BPA using phytoremediation-associated mechanisms.

A review on biofilm-based reactors for wastewater treatment: Recent advancements in biofilm carriers, kinetics, reactors, economics, and future perspectives.

Industrialization plays an important role in the growth of a nation. But it is also added to the deteriorating condition of our ecosystem. Pollution, be it aquatic, terrestrial, or airborne, has affected our environment drastically and the surge of industries and growing population plays a major role in it. Innumerable basic and advanced techniques degrade the contaminants in wastewater. Most of these techniques are efficient but have several drawbacks too. The biological technique is one such viable approach in which there are no eminent downsides. This article presents a brief investigation of the biological treatment of wastewater, namely biofilm technology. Recently biofilm treatment technology has garnered a lot of attention due to its efficiency, inexpensiveness, and ease of incorporation into various conventional treatment techniques. A succinct analysis is provided about the mechanism of biofilm formation and its application in various systems in fixed, suspended, or submerged conditions. Details of the application of biofilm technology in lab-scale and pilot-scale treatment of industrial effluents are also discussed. This study is crucial to understand the competency of biofilms and to utilize the idea for further development of the technology for better management of wastewater. Pollutants such as BOD, COD can be removed up to 98 % with the help of Biofilm reactor technologies, making it one of the most efficient systems for wastewater treatment.