Department of Plant, Cell and Molecular biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran.
Department of Chemistry, Azarbaijan Shahid Madani University, Tabriz, Iran.
Int J Phytoremediation. 2024 May;26(7):1168-1179. doi: 10.1080/15226514.2023.2298773. Epub 2024 Jan 2.
Our study aims to investigate the response of the unicellular alga, , to the toxicity of lead and propose a low-cost, highly efficient biological adsorbent for the purification of wastewater and lead-contaminated water. The first part examines the effects of lead toxicity on certain physiological indicators of this alga. In the second part, the potential of this alga in lead removal and its adsorption capacity was assessed. The alga was cultivated in a BG11 medium and treated with lead nitrate concentrations of 10, 50, and 200 mg/L during its exponential growth. The results showed that with an increase in lead concentration up to 200 mg/L, the growth rate, chlorophyll , chlorophyll , carotenoid and total protein content decreased, while malondialdehyde (MDA) content increased. The astaxanthin content slightly increased at the 10 mg/L but decreased at the 200 mg/L treatment. Maximum lead adsorption was observed at 98.69% under optimal conditions, including a pH of 6, an adsorbent dose of 1 g/L, a lead concentration of 25 mg/L, a temperature of 25 °C, and an exposure time of 120 min. The results of this study demonstrate that has the potential for effective lead removal from aquatic environments.
我们的研究旨在探讨单细胞藻类对铅毒性的反应，并提出一种低成本、高效的生物吸附剂，用于净化废水和受铅污染的水。第一部分研究了铅毒性对该藻类某些生理指标的影响。第二部分评估了该藻类在去除铅及其吸附能力方面的潜力。该藻类在 BG11 培养基中培养，并在指数生长期用硝酸铅浓度为 10、50 和 200mg/L 进行处理。结果表明，随着铅浓度增加到 200mg/L，生长速度、叶绿素 a、叶绿素 b、类胡萝卜素和总蛋白质含量降低，而丙二醛（MDA）含量增加。虾青素含量在 10mg/L 时略有增加，但在 200mg/L 时减少。在最佳条件下，最大吸附率为 98.69%，最佳条件包括 pH 值为 6、吸附剂剂量为 1g/L、铅浓度为 25mg/L、温度为 25°C 和暴露时间为 120min。本研究结果表明，具有从水环境污染中有效去除铅的潜力。
