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Efficacy of Lemna minor and Typha latifolia for the treatment of textile industry wastewater in a constructed wetland under citric acid amendment: A lab scale study
Chemosphere ( IF 8.1 ) Pub Date : 2021-06-11 , DOI: 10.1016/j.chemosphere.2021.131107
Hafiz Khuzama Ishaq , Mujahid Farid , Muhammad Zubair , Hesham F. Alharby , Zaki Ul Zaman Asam , Sheharyaar Farid , Atif A. Bamagoos , Basmah M. Alharbi , Muhammad Bilal Shakoor , Sajid Rashid Ahmad , Muhammad Rizwan , Shafaqat Ali

Lead (Pb), copper (Cu) and chromium (Cr) are one of the most harmful heavy metals (HMs), entering into the food chain through the irrigation of crops with an industrial effluent. The present study was performed to evaluate the toxic effects of textile effluents and performance of citric acid (CA) on phytoextraction potential of Lemna minor L. and Typha latifolia L. in an artificially designed wetland. Different doses of textile wastewater (0, 25, 50, 75, and 100%) and CA (10 mM) were applied alone and in combination. Plants were harvested and the data was collected regarding agronomic traits, photosynthetic pigments, antioxidant enzymes, reactive oxygen species (ROS), electrolytic leakage (EL) and HMs uptake and accumulation. The results depicted that the concentration and accumulation of Cu, Pb and Cr in different parts of T. latifolia plant was increased with and without CA addition. The maximum concentration of Pb, Cu and Cr increased in leaves by 279, 240 & 171%, in stem by 192, 172 & 154%, and in roots by 224, 183 & 168%, respectively. Similarly, the accumulation of Pb, Cu and Cr increased in leaves by 91, 71 & 36%, in stem by 57, 46 & 36% and in roots by 76, 53 & 45%, respectively in plants treated with 100% textile effluent as compared to the 25% textile effluent treated plants under CA amendment. In L. minor, the concentration of Pb, Cu & Cr increased by 542, 411 and 397% while accumulation increased by 101, 59 & 55% respectively in overall plant biomass.



中文翻译:


柠檬酸改良剂下浮萍和香蒲处理人工湿地纺织工业废水的功效:实验室规模研究



铅 (Pb)、铜 (Cu) 和铬 (Cr) 是最有害的重金属 (HM) 之一,通过工业废水灌溉农作物进入食物链。本研究旨在评估人工设计的湿地中纺织废水的毒性影响以及柠檬酸 (CA) 对青萍香蒲植物提取潜力的性能。单独或联合施用不同剂量的纺织废水(0%、25%、50%、75%和100%)和CA(10 mM)。收获植物并收集有关农艺性状、光合色素、抗氧化酶、活性氧(ROS)、电解泄漏(EL)以及HMs吸收和积累的数据。结果表明,无论添加或不添加CA,阔叶椴树不同部位的Cu、Pb和Cr的浓度和积累量均有所增加。叶中 Pb、Cu 和 Cr 的最大浓度分别增加了 279%、240% 和 171%,茎中增加了 192%、172% 和 154%,根中增加了 224%、183% 和 168%。同样,在经过 100% 纺织废水处理的植物中,叶子中 Pb、Cu 和 Cr 的累积量分别增加了 91%、71% 和 36%,茎中增加了 57%、46% 和 36%,根部增加了 76%、53% 和 45%。与根据 CA 修正案处理 25% 纺织废水的工厂相比。 L.minor中 Pb、Cu 和 Cr 的浓度分别增加了 542%、411% 和 397%,而植物总生物量的积累量分别增加了 101%、59% 和 55%。

更新日期:2021-06-15
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