With the increasing pace of development in the agriculture and manufacturing industries, there is a release of a large amount of biomass waste into the environment. Excess load of this hazardous waste has led to environmental pollution (Kamaludeen et al., 2003). Bioremediation is a process which uses biological agents i.e. microorganisms like bacteria, yeast, and fungi, to make the soil and water sources free from contaminants of the biomass (Strong and Burgess, 2008). The consortium of specific microorganisms grows on the contaminated sites to perform their action to eliminate the waste. These microorganisms utilize the contaminants as nutrients or energy sources (Tang et al., 2007).
In the process of biological electricity generation, the two electrodes- anode (negative terminal) and cathode (positive terminal) are usually connected by conductive materials. Micro-organisms produce the electrons, after which transferred to cathode using electron mediators and nano-wires (Bose et al. 2018). Bioremediation is the process of using micro-organisms to neutralize or remove contamination from waste. However, nowadays it is also an important technique used to produce electricity from organic and inorganic matter catalyzed (Cookson 2011). Microbial Fuel Cells or Bio-Electrochemical Systems (BES) combine biological catalytic redox activity with abiotic electrochemical reactions and physics. However, in 1911, Potter deduced the idea of electricity generation using microbes. Furthermore, studies by Santoro et al. (2017) has led to the improvement of concept and practical developments. Thus, by using organic substrates, such as domestic wastewater, animal wastewater, oil wastewater, and wasted sludge microbial fuel cells, integrated with anaerobic and aerobic treatments using bacteria as catalysts. Therefore they can lead to effective bioelectricity generation (Bose et al. 2018). Read more »
Bioremediation helps cleaning up polluted environments, including soils, groundwater and marine environments. Such systems can include bacteria, fungi, algae and plant species. They are capable of metabolizing, immobilizing or absorbing toxic compounds from their environment. However, a major advantage of these systems is that they are less harmful to the environment with minimum or no by-products. Read more »
With the ever-increasing population of the world, the utilization and therefore the demand for energy resources is also increasing. Also, the quick diminishing rate of the natural resources due to their degradation has created an urgent need to find alternative resources (Sasikumar & Papinazath, 2003). In the long run, bioremediation can help fulfill the increasing demands for energy resources, pollution control and waste management. Read more »
In the previous article, the role of genetic engineering in improving bioremediation were discussed. With rapid industrialization, heavy metal contamination and organic pollutants have increasingly affected soil and water bodies. These threaten the ecosystem, surface and ground waters, food and human health. Phytoremediation is a method which involves growing plants in a contaminated matrix to remove environmental contaminants. Read more »
The previous article discussed the role of gene ontology in bioremediation. It also studied its importance in identifying new genes or proteins involved in bioremediation. Gene ontology can help in annotating and identifying important genes and proteins of organisms capable of bioremediation. Gene ontology analysis can assist in phytoremediation studies to mitigate dangerous pollutants. Read more »
In the previous articles, gene and protein of interest were studied with respect to their closely related variants found in NCBI database. In this article, gene and their products are studied on the basis of a standardised approach of annotating the correct information. This is based on gene annotation and gene ontology. Gene ontology refers to a consistent method of describing genes and gene products across all species and databases. Read more »
Mercury is a highly potent neurotoxin impacting the function and development of the central nervous system in people and wildlife. Exposure to it in the form of vapours or organic methylmercury leads to neurological and behavioural issues. Moreover, mercury exposure is toxic to the digestive system, organs and the immune system (World Health Organization, 2017). Mercury pollutants in the environment are present in elemental, inorganic and organic forms. Global heavy metal contamination are increasing in soil due to industrialisation. Read more »