Abstract
Current and future microbiological strategies to remove As and Cd from drinking water.
Highlights
Access to clean drinking water is one of the most fundamental of all human rights; many millions of people around the world, in low-income, developing countries, are regularly exposed to water sources that are contaminated by pathogenic bacteria, or toxic levels of pollutants such as the metalloid arsenic (As) and heavy metal cadmium (Cd) (Smedley et al, 2002; UN-EP, 2010)
Microbial Biotechnology published by John Wiley & Sons Ltd and Society for Applied Microbiology
Despite much research into the use of microbiology to treat metal pollutants such as As and Cd, it remains to be seen whether a sustainable, bioremediation strategy is achievable in the near future
Summary
Access to clean drinking water is one of the most fundamental of all human rights; many millions of people around the world, in low-income, developing countries, are regularly exposed to water sources that are contaminated by pathogenic bacteria, or toxic levels of pollutants such as the metalloid arsenic (As) and heavy metal cadmium (Cd) (Smedley et al, 2002; UN-EP, 2010). These pollutants can lead to the development of many health issues such as rashes, lesions, cancers or even death (Smith et al, 2000; UNEP, 2010). Bioremediation strategies where bacteria are actively involved with the transformation of a species (e.g. through oxidation or reduction) are referred to it as ‘direct microbial bioremediation’, whereas treatments by secondary processes (e.g. mineralization) stimulated by bacteria are referred to as ‘indirect microbial bioremediation’
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