生物炭
光催化
过硫酸盐
废水
生物量(生态学)
污水处理
氧化法
工业废水处理
高级氧化法
环境化学
环境科学
过程(计算)
废物管理
制浆造纸工业
化学
环境工程
催化作用
生态学
热解
工程类
有机化学
生物
计算机科学
操作系统
作者
Atif Shafique,Hafiz Muhammad Uzair Ayub,Javed Iqbal,Shanawar Hamid,Fawad Ashraf,Muhammad Saif Ur Rehman,S. Boukhari,Mohamed A. Habila,Alam Nawaz,Tahir Fazal
出处
期刊:Chemosphere
[Elsevier]
日期:2024-01-01
卷期号:: 141325-141325
标识
DOI:10.1016/j.chemosphere.2024.141325
摘要
Textile wastewater, heavily contaminated with organic dyes, is generating severe problems to environment and human health. The implementation of gC3N4 with biochar (gC3N4-BC) for the treatment of textile wastewater is less effective due to the limited adsorption capacity and slower degradation kinetics. To tackle these problems, peroxydisulfate (PDS) is integrated with gC3N4-BC photocatalyst to enhance the process efficiency and kinetics. The synthesized gC3N4-BC-5 composite shows higher separation of charge carriers, light absorbance, and lower energy bandgap (2.62 eV). The results of photocatalytic degradation and rate constant are enhanced up to 99.9 % and 0.041 min−1 using gC3N4-BC-5 with PDS as compared to without PDS (96.8 % and 0.028 min−1, respectively). The radicals (SO4−•, O2−•, and OH•) are responsible to improve the degradation process efficiency and kinetics. The reusability of optimized sample indicates that gC3N4-BC-5 is stable and effective up to five cycles. The gC3N4-BC-5 composite attains highest adsorption (70.9 %) when compared to BC (62.3 %) and pure gC3N4 (27.1 %). The well-fitted models of adsorption (Pseudo-Second-Order and Freundlich) confirm the favorable, chemical, and multilayered adsorption process. The coupling of gC3N4-BC-5 with PDS is effective, efficient, and stable process to enhance the kinetics and degradation of textile wastewater.
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