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标题：Novel Technique for Purification of Polluted Water by Using Plant Extracts in Rajkot
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作者：Jignasa B. Joshi ; Manish M. Jani
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：9
页码：16683
DOI：10.15680/IJIRSET.2016.0509178
出版社：S&S Publications
摘要：There are many research studies on the purification of groundwater have mainly been carried out indeveloped countries and have focused on water purification systems using aluminium sulphate (a coagulant) andchlorine (a disinfectant). Such systems are expensive and not viable for rural communities due to abject poverty. Therehas been very little scientific research work into the use of plant extracts to purify groundwater. Findings from apreliminary lab-scale study show strong potentials of phytodisinfectants as a low-cost, appropriate and ecologicalalternative technology in purifying water in rural areas of Gujarat. The study involved creating an inventory of plantextracts that have been used for water and waste water purification. A prioritization system was derived to select themost suitable extracts, which took into account criteria such as availability, purification potential, yield and cost ofextraction. Laboratory trials were undertaken on the most promising plant extracts, namely: Moringa concanensis(kernel), Cassia fistula (kernel) and Azadirachta indica (Leaf). The trials consisted of jar tests to assess the coagulationpotential and the resulting effect on physico-chemical parameters ( Yongabi et al, 2011). The pH of the water samplesdecreased with dosage, but remained within acceptable levels for drinking water for all the extracts. Overall, M.concanensis powder produced superior results, followed by Cassia fistula (kernel) and Azadirachta indica (Leaf).There is a need to carry out further more detailed tests, which include toxicity to guarantee the safety of using plantextracts as a coagulant in the purification of drinking water for human consumption.
关键词：Water Pollution. Drinking water; Plant extract; Pure Water