Sumalatha Boddu, Murthy Chavali, John Babu Dulla, Venkata Narayana Allugunulla, Indira Mikkili, Sireesha Malladi, Sudheera Mannepalli, Anoar Ali Khan
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引用次数: 0
摘要
本研究研究了磁性姜黄叶生物炭（MTB）作为一种新型、经济、环保的生物吸附剂用于去除污染水中的亚甲基蓝（MB）和刚果红（CR）染料。这些染料构成严重的环境风险，包括水污染和水生生态系统的破坏。通过吸附实验考察了pH、初始染料浓度、吸附剂用量、温度、接触时间等参数对MTB脱色效果的影响。利用红外光谱（FTIR）、扫描电镜（SEM）和热重分析仪（TGA）等技术对生物吸附剂的形态和理化性质进行了表征。吸附数据符合Langmuir等温线模型，表明MB和CR的最大吸附量分别为323.625 mg g - 1和256.41 mg g - 1。动力学研究表明，两种染料的吸附过程符合准二阶模型，而热力学分析表明两种染料的吸附过程都是自发和放热的。吸附机理主要包括静电相互作用、氢键和π-π键。值得注意的是，MTB表现出了良好的再生潜力，经过6次循环后，其对MB和CR的吸附量分别保持了67.19%和60.82%。这些结果表明，MTB是一种非常有前途的生物吸附剂，具有可持续和高效处理废水的巨大潜力。图形抽象
Innovative magnetic biochar for textile wastewater treatment: a sustainable solution for methylene blue and Congo Red dye removal
The present study investigates the use of magnetic turmeric leaf biochar (MTB) as a novel, cost-effective, and eco-friendly biosorbent for the removal of methylene blue (MB) and Congo Red (CR) dyes from contaminated water. These dyes pose serious environmental risks, including water pollution and disruption of aquatic ecosystems. Adsorption experiments were conducted to evaluate the effects of various parameters such as pH, initial dye concentration, adsorbent dosage, temperature, and contact time on the decolorization efficiency of MTB. The morphological and physicochemical properties of the biosorbent were characterized using FTIR, SEM, and TGA techniques. Adsorption data were well-fitted to the Langmuir isotherm model, indicating maximum adsorption capacities of 323.625 mg g⁻1 for MB and 256.41 mg g⁻1 for CR. Kinetic studies revealed that the adsorption process followed a pseudo-second-order model, while thermodynamic analysis indicated a spontaneous and exothermic nature for both dyes. The adsorption mechanisms primarily involved electrostatic interactions, hydrogen bonding, and π-π bonding. Notably, MTB exhibited excellent regeneration potential, retaining 67.19% and 60.82% of its adsorption capacity for MB and CR, respectively, after six cycles. These results demonstrate that MTB is a highly promising biosorbent with great potential for sustainable and efficient wastewater treatment applications.
期刊介绍：
Biomass Conversion and Biorefinery presents articles and information on research, development and applications in thermo-chemical conversion; physico-chemical conversion and bio-chemical conversion, including all necessary steps for the provision and preparation of the biomass as well as all possible downstream processing steps for the environmentally sound and economically viable provision of energy and chemical products.
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