香根草同时去除合成废水中的砷、氟和锰。
Simultaneous removal of arsenic, fluoride, and manganese from synthetic wastewater by Vetiveria zizanioides.
机构信息
Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, India.
Department of Chemical Engineering, Ujjain Engineering College, Ujjain, Madhya Pradesh, India.
出版信息
Environ Sci Pollut Res Int. 2021 Aug;28(32):44216-44225. doi: 10.1007/s11356-021-13898-3. Epub 2021 Apr 13.
Main aim of the present research is to explore the potential use of Vetiveria zizanioides L. for phytoremediation of arsenic, fluoride, and manganese simultaneously from synthetic wastewater in a batch scale floating platform unit. Half strength Hoagland's nutrient solution spiked with arsenic, fluoride, and manganese concentrations of 1, 20, and 10 mg/L, respectively has been used. The effects of pH and treatment time on simultaneous removal of arsenic, fluoride, and manganese have been performed. V. zizanioides has exhibited optimum growth at pH 8 and the removal of arsenic and fluoride is observed to be 59.6 and 38.1%, respectively. This plant has successfully removed all of the manganese (99.3%). The uptake of manganese is found to be faster than the arsenic and fluoride. The trend of arsenic, fluoride, and manganese accumulation in various parts of V. zizanioides is found as roots > stems > leaves. Result showed that the use of V. zizanioides would be appropriate to treat arsenic, fluoride, and manganese contaminated wastewater.
本研究的主要目的是探索利用香根草（Vetiveria zizanioides L.）在批量浮床装置中同时修复含砷、氟和锰的合成废水中的砷、氟和锰。使用了含有砷、氟和锰浓度分别为 1、20 和 10 mg/L 的半强度 Hoagland 营养液。研究了 pH 值和处理时间对同时去除砷、氟和锰的影响。香根草在 pH 值为 8 时表现出最佳生长，砷和氟的去除率分别为 59.6%和 38.1%。该植物成功去除了所有的锰（99.3%）。锰的吸收速度快于砷和氟。在香根草的各个部位，砷、氟和锰的积累趋势为根＞茎＞叶。结果表明，香根草可用于处理含砷、氟和锰的废水。
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