Metals from waste water such as iron, copper, cadmium, nickel, uranium can be mostly complexed by extracellular polymers produced by several types of bacteria (B. licheniformis, Zooglearamigera). Who decides about biotech? Heavy metal pollution is usually gene­rated from electroplating, plastics manufactur­ing, fertilizers, pigments, mining, and metal­lurgical processes. In many respects, composting and digestion differ from other waste management processes in that they can be carried out at varying scales of size and com­plexity. Biotechnology & Environmental Issues- Question paper Notes | EduRev chapter (including extra questions, long questions, short questions, mcq) can be found on EduRev, you can check endobj Contact us if you experience any difficulty logging in. Advanced techniques are available to treat waste and degrade pollutants assisted by liv­ing organisms or to develop products and pro­cesses that generate less waste and preserve the natural non-renewable resources and en­ergy as a result of the followings: 1. This special issue mainly focuses on the various aspects of biotechnology application in the field of environmental biotechnology. Metals (arsenic, cadmium, chromium, cop­per, lead, mercury, nickel, zinc), and. Evolutionary and genomic approaches to biodegradation. The selection of a certain remediation method entails non-engineered solutions (natural attenuation/intrinsic remediation) or an engineered one, based on a good initial survey and risk assessment. The treat­ments could be performed as aerobic or anaero­bic depending on whether the process requires oxygen or not. The co-fermentation of separately collected biodegradable waste with agricultural and/or industrial solid and liquid waste, c. Co-fermentation of separately collected biodegradable waste in the digesting tow­ers of municipal waste treatment facilities. Bacteria and fungi are very good at degrad­ing complex molecules, and the resultant wastes are generally safe. Physicochemical methods in­volve the use of analytical equipment, having limitations regarding their cost (because of the complexity of the samples and the expertise of the operators needed to conduct the analysis) and the lack of hazard and toxicological infor­mation. The formation of public perceptions of science is a very complex and problematic process, but a major factor is the information that is available and presented most frequently to the public. stream If biotechnology is beneficial for humans, it has some issues also. It is not a new area of interest, because some of the issues of concern are familiar examples of “old” technologies, such as: composting, wastewater treatment, etc. Biomarkers that have potential for use in bio monitoring are: a. Molecular (gene expression, DNA integ­rity), b. Biochemical (enzymatic, specific proteins or indicator compounds), c. Histo-cytopathological (cytological, histopathological). Some of these processes could be used to solve the most demanding environmental problems like controlling air emissions and water pollution. out lecture & lessons summary in the same course for Syllabus. Since many of these com­pounds are toxic to microorganisms, pre-treatment may be required. An additional inoculum for the composting process is not generally necessary, because of the high number of microorganisms in the waste itself and their short generation time. Prospective authors are invited to contribute original research articles as well as critical reviews for this forthcoming special issue. The effective recycling of bio-waste through composting or digestion can transform a potentially problematic ‘waste’ into a valuable ‘product’ compost. Nowa­days, temporal and spatial changes in selected biological systems/parameters can and are used to reflect changes in environmental qual­ity through bio-monitoring. Exploitation of interactions with other technologies. A complete biodegradation results in detoxification by mineralizing pollutants to carbon dioxide, water and harmless inorganic salts. Because biotechnological processes, once set up, are considered cheaper than traditional methods and changes in production processes will not only contribute to environmental protection, but also help com­panies save money and continuously improve their public image.