Removal of carcinogenic benzidine from water using highly efficient carbon black prepared from sugarcane bagasse

IF 5.7 3区环境科学与生态学 Q1 WATER RESOURCES

Applied Water Science Pub Date : 2025-04-29 DOI:10.1007/s13201-025-02432-2

Nehad A. Elmaghraby, Mohamed A. Hassaan, Mohamed A. Zien, Elsayed M. Abedelrhim, Safaa Ragab, Murat Yılmaz, Ahmed El Nemr

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Abstract

The use of inexpensive, easily accessible, highly effective, and environmentally friendly adsorbents has been looked into as a perfect substitute for the currently expensive ways of extracting pollutants from wastewater. This study examines the potential use of carbon black (CB) obtained from sugarcane bagasse for the elimination of aromatic amines such as benzidine from simulated wastewater as it is listed as a carcinogenic agent. The contact time, adsorbent dosage, and initial benzidine concentration effects on the system were investigated. According to the findings, the proportion of benzidine removed rose as the adsorbent amount increased. The adsorption of benzidine followed a pseudo-second-order (PSOM) rate equation and fit well Langmuir (LIM) better than the other isotherm models. Maximum adsorption of benzidine on carbon black from sugar cane bagasse (CBB) (99.84%) was observed at pH 2.65 (normal pH), adsorption dose 2 g L^–1, and initial concentration of 50 mg L^–1 benzidine after contact time 50 min.

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用蔗渣制备的高效炭黑去除水中致癌物联苯胺

廉价、易得、高效、环保的吸附剂是目前从废水中提取污染物的昂贵方法的完美替代品。本研究探讨了从甘蔗渣中提取的炭黑（CB）的潜在用途，以消除模拟废水中的芳香胺，如联苯胺，因为它被列为致癌物。考察了接触时间、吸附剂用量和初始联苯胺浓度对体系的影响。结果表明，随着吸附剂用量的增加，联苯胺的去除率提高。联苯胺的吸附符合伪二阶（PSOM）速率方程，与Langmuir （LIM）等温线模型拟合较好。在pH为2.65（正常pH）、吸附量为2 g L-1、接触时间为50 min、联苯胺初始浓度为50 mg L-1的条件下，蔗渣（CBB）对炭黑的最大吸附率为99.84%。

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