Department of Bioprocess Development, Genetic Engineering and Biotechnology Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, 21934, Alexandria, Egypt.
Department of Biology, College of Sciences and Arts Khulais, University of Jeddah, Jeddah, Saudi Arabia.
Sci Rep. 2021 Feb 11;11(1):3555. doi: 10.1038/s41598-021-82827-8.
Textile wastewater contains large quantities of azo dyes mixed with various contaminants especially heavy metal ions. The discharge of effluents containing methyl orange (MO) dye and Cu ions into water is harmful because they have severe toxic effects to humans and the aquatic ecosystem. The dried algal biomass was used as a sustainable, cost-effective and eco-friendly for the treatment of the textile wastewater. Box-Behnken design (BBD) was used to identify the most significant factors for achieving maximum biosorption of Cu and MO from aqueous solutions using marine alga Fucus vesiculosus biomass. The experimental results indicated that 3 g/L of F. vesiculosus biomass was capable of removing 92.76% of copper and 50.27% of MO simultaneously from aqueous solution using MO (60 mg/L), copper (200 mg/L) at pH 7 within 60 min with agitation at 200 rpm. The dry biomass was also investigated using SEM, EDS, and FTIR before and after MO and copper biosorption. FTIR, EDS and SEM analyses revealed obvious changes in the characteristics of the algal biomass as a result of the biosorption process. The dry biomass of F. vesiculosus can eliminate MO and copper ions from aquatic effluents in a feasible and efficient method.
纺织废水含有大量与各种污染物（尤其是重金属离子）混合的偶氮染料。含有甲基橙（MO）染料和 Cu 离子的废水排放对水体会造成危害，因为它们对人类和水生生态系统具有严重的毒性作用。干燥的藻类生物质被用作一种可持续、经济高效且环保的方法，用于处理纺织废水。使用 Box-Behnken 设计（BBD）来确定使用海洋藻类石莼生物质从水溶液中实现最大 Cu 和 MO 生物吸附的最重要因素。实验结果表明，在 pH 值为 7、搅拌速度为 200rpm、60min 的条件下，3g/L 的石莼生物质能够同时从浓度为 60mg/L 的 MO 和 200mg/L 的 Cu 的水溶液中去除 92.76%的铜和 50.27%的 MO。在 MO 和铜的生物吸附前后，还使用 SEM、EDS 和 FTIR 对干燥的生物质进行了研究。FTIR、EDS 和 SEM 分析表明，由于生物吸附过程，藻类生物质的特性发生了明显变化。石莼的干燥生物质可以以一种可行且有效的方法从水废水中去除 MO 和铜离子。
