Biotechnological Approaches as an Alternative for Bioremediation of Contaminated Ground Water Table Around the Globe

摘要

According to USEPA 1999, one of the most hazardous toxic substances causing Arsenicosis enlisted was arsenic (www.atsdr.cdc. gov/cx3.html). According to WHO 1993 guideline the recommended limit that must be assume to be safe in water, should range from 0.05- 0.01 mg/l. In most of the countries (around 34 reported) contamination of arsenic is rising heavily at food chain level due to various reasons via various sources to plant, animal and human. Although the western countries have reduced their national standards in line with this change, in most of the Asian countries (except Japan and Vietnam) it remains at 50 ug/L while limit of arsenic may be lower in some. According to recent report India has been identified among the top 12 in South East Asia [1]. At least 16 states of India including Punjab reported to have alarming level of arsenic as given by Dutta and Kaul [2].