Loading of anionic surfactant on eco-friendly biochar and its applications in Cr(VI) removal: adsorption, kinetics, and reusability studies

IF 4.3 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

BMC Chemistry Pub Date : 2025-01-10 DOI:10.1186/s13065-024-01363-4

Azza M. Shaker, Mohamed Khedawy, Abeer A. Moneer, Nabila M. El-Mallah, Mohamed S. Ramadan

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Abstract

Surfactant-modified biochar is a viable adsorbent for eliminating Cr(VI) from synthetic wastewater. The biochar obtained from the zea mays plant (BC) was tailored with sodium dodecyl sulfate (SDS) as an anionic surfactant forming SDS-BC adsorbent. Different controlling conditions have been evaluated including pH of the solution, biomass concentration, primary Cr(VI) concentration, time of adsorption, and temperature. Under the best controlling circumstances, the percentage of removal has attained 99%. The pseudo-second-order kinetic model best described the removal process, according to the kinetic data, while the Temkin model, one of the applicable adsorption isotherm models, well expressed the adsorption process. The thermodynamic parameters were computed, which disclosed the spontaneity and exothermic character of the Cr(VI) elimination. According to the regeneration cycles, SDS-BC was cost-effective and had a good removal capability.

Graphical Abstract

查看原文本刊更多论文

负离子表面活性剂在生态友好型生物炭上的负载及其在Cr（VI）去除中的应用：吸附、动力学和可重用性研究

表面活性剂改性生物炭是一种可行的去除合成废水中铬（VI）的吸附剂。用十二烷基硫酸钠（SDS）作为阴离子表面活性剂，对从玉米植株（BC）中提取的生物炭进行了改性，形成了SDS-BC吸附剂。考察了不同的控制条件，包括溶液pH、生物量浓度、初代Cr（VI）浓度、吸附时间和温度。在最佳控制条件下，去除率可达99%。根据动力学数据，拟二级动力学模型最能描述脱除过程，而Temkin模型是一种适用的吸附等温线模型，能很好地表达吸附过程。热力学参数的计算揭示了Cr（VI）消去的自发性和放热特性。从再生周期来看，SDS-BC具有较好的去除能力和较好的成本效益。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

BMC Chemistry Chemistry-General Chemistry

CiteScore

5.30

自引率

2.20%

发文量

审稿时长

27 weeks

期刊介绍： BMC Chemistry, formerly known as Chemistry Central Journal, is now part of the BMC series journals family. Chemistry Central Journal has served the chemistry community as a trusted open access resource for more than 10 years – and we are delighted to announce the next step on its journey. In January 2019 the journal has been renamed BMC Chemistry and now strengthens the BMC series footprint in the physical sciences by publishing quality articles and by pushing the boundaries of open chemistry.