The Capacity of Heavy Metal Remediation by Cyperus alternifolius, Chrysopogon zizanioides (L.) Roberty, and Aloe vera (L.) Burm.f. under Industrial and Urban Wastewater Treatment

Sareh Ebrahimi Nokande, S. Razavi, M. Mohammadian
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Abstract

Abstract Urban wastewater (UWW) and industrial wastewater (IWW) release lots of heavy metals into the environment, leading to various risks regarding agricultural production, food quality, human and animal health, and environmental safety. Phytoremediation is known as one of the best and most affordable strategies to eliminate or reduce heavy metals in different environments. This study examined the phytoremediation ability of three plant species (Cyperus alternifolius, Chrysopogon zizanioides (L.) Roberty, and Aloe vera (L.) Burm.f) to absorb heavy metals of Zn, Cr, Pb, Cu, Mn, Ni, and Mg from the contaminated soil with UWW and IWW for 14 months. The result showed that all three examined plants reduced heavy metal pollution of the soil using the phytostabilization method. The metal accumulation index (MAI) of the root in V. zizanioides was higher than C. alternifolius and A. vera. While MAI of the shoot in A. vera was higher than C. zizanioides and C. alternifolius. Based on the results, it is suggested to cultivate C. zizanioides and A. vera in the polluted areas to decrease the amount of soil contaminants and create a green belt. Keywords: Heavy metal, Industrial and urban wastewater, Metal accumulation index, Phytoremediation, Phytostabilization
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工业和城市污水处理条件下交互花柏(Cyperus alternifolius)、紫草(Chrysopogon zizanioides(L.)Roberty)和芦荟(Aloe vera(L.)Burm.f.)对重金属的修复能力
摘要城市污水(UWW)和工业废水(IWW)向环境中释放大量重金属,导致农业生产、食品质量、人类和动物健康以及环境安全等方面的各种风险。植物修复被认为是在不同环境中消除或减少重金属的最佳和最实惠的策略之一。本研究考察了三种植物(交替叶莎草(Cyperus alternifolius)、紫檀(Chrysopogon zizanioides(L.)Roberty和芦荟(Aloe vera(L.)Burm.f)对UWW和IWW污染土壤中Zn、Cr、Pb、Cu、Mn、Ni和Mg重金属的植物修复能力,为期14个月。结果表明,三种受试植物均采用植物稳定化方法降低了土壤重金属污染。紫檀根的金属积累指数(MAI)高于互变花紫檀(C.alternifolius)和维拉紫檀(A.vera)。而枝梢的MAI则高于齐扎花和互变花。根据研究结果,建议在污染区种植番荔枝和维拉,以减少土壤污染物的数量,创建绿化带。关键词:重金属,工业和城市废水,金属积累指数,植物修复,植物稳定
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来源期刊
Chiang Mai University journal of natural sciences
Chiang Mai University journal of natural sciences Health Professions-Health Professions (miscellaneous)
CiteScore
1.70
自引率
0.00%
发文量
67
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