Al-Baldawi Israa Abdulwahab, Yasin Safaa Rasheed, Jasim Salwa Shamran, Abdullah Siti Rozaimah Sheikh, Almansoory Asia Fadhile, Ismail Nur 'Izzati
Department of Chemical and Process, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia.
Department of Biochemical Engineering, Al-Khwarizmi College of Engineering, University of Baghdad, Baghdad, Iraq.
Heliyon. 2022 Nov 8;8(11):e11456. doi: 10.1016/j.heliyon.2022.e11456. eCollection 2022 Nov.
Phytoremediation is an eco-friendly biotechnology with low costs. The removal of copper (Cu) from polluted water by the two floating plant species and was observed and recorded. Plants were exposed to different Cu (II) concentration (0.25-1.00 mg/L) and sampling time (Days 0, 1, 2, 5 and 7). Both plants can remove Cu at 1.00 mg Cu/L water, with the highest removal rates of 100% for and 74% for on the fifth day of exposure. At the end of the exposure period (Day 7), the growth of exposed to 1.00 mg Cu/L was inhibited by Cu, but the structure of the inner cells of was well organized as compared to the initial treatment period. Regarding , Cu at 1.00 mg/L negatively impacted both the growth and morphology (shrinking of its inner structure) of this plant. This is due to the higher accumulation of Cu in (2.86 mg/g) than in (1.49 mg/g). Additionally, the rate of Cu removal per dry mass of plant fitted a pseudo-second order model for both plants, whereas the adsorption equilibrium data fitted the Freundlich isotherm, indicating that Cu adsorption occurs in multiple layers. Based on the results, both species can be applied in the phytoremediation of Cu-polluted water.
植物修复是一种低成本的环保生物技术。观察并记录了两种漂浮植物对污染水中铜（Cu）的去除情况。将植物暴露于不同的铜（II）浓度（0.25 - 1.00毫克/升）和采样时间（第0、1、2、5和7天）。两种植物在水中铜浓度为1.00毫克/升时都能去除铜，在暴露的第五天，[植物名称1]的最高去除率为100%，[植物名称2]为74%。在暴露期结束时（第7天），暴露于1.00毫克/升铜的[植物名称1]的生长受到铜的抑制，但与初始处理期相比，[植物名称1]内部细胞结构组织良好。对于[植物名称2]，1.00毫克/升的铜对该植物的生长和形态（内部结构收缩）都有负面影响。这是因为[植物名称2]中铜的积累量（2.86毫克/克）高于[植物名称1]（1.49毫克/克）。此外，两种植物每单位干质量植物的铜去除率均符合准二级模型，而吸附平衡数据符合弗伦德利希等温线，表明铜吸附以多层形式发生。基于这些结果，两种植物都可应用于铜污染水的植物修复。
