摘要
氧化降解是治理有机废水的常用方法之一,但是降解过程中形成的小分子物质可能会对水体形成二次污染。鉴于此,将Zn_(3)In_(2)S_(6)包埋在明胶/壳聚糖/聚吡咯(Gel/CS/PPy)凝胶中制备出Gel/CS/PPy/Zn_(3)In_(2)S_(6)复合材料,实现凝胶吸附和光催化降解相耦合。通过扫描电镜(SEM)、傅里叶变换红外光谱(FT-IR)、紫外可见光谱(UV-vis-NIR)对材料的结构及性能进行表征。以酸性品红(AF)为处理对象,开发出吸附富集和原位降解相结合的综合处理方法。Gel/CS/PPy凝胶体系可将AF从污染水体中转移到凝胶内,实现AF的大容量吸附富集,吸附效率可以达到93.74%,凝胶中的Zn_(3)In_(2)S_(6)可以将吸附的AF氧化降解,并再生吸附位点。最终Gel/CS/PPy/Zn_(3)In_(2)S_(6)可重复利用至少6次以上,处理效率保持在90%以上。
Oxidative degradation is one of the common methods to treat organic wastewater,but the small molecules formed in the degradation process may cause secondary pollution to the water.In view of this,Gel/CS/PPy/Zn_(3)In_(2)S_(6)composites were prepared by embedding Zn_(3)In_(2)S_(6)in Gel/CS/PPy gel which had the ability of gel adsorption and photocatalytic degradation.The structure and properties of the materials were characterized by scanning electron microscopy(SEM),Fourier transform infrared spectroscopy(FT-IR)and ultraviolet-visible spectroscopy(UV-vis-NIR).Taking acid fuchsin(AF)as the treatment object,a comprehensive treatment method combining adsorption enrichment and in-situ degradation was developed.The Gel/CS/PPy gel is conducive to the large-capacity adsorption of AF,and the adsorption efficiency can reach 93.74%.The Zn_(3)In_(2)S_(6)in the gel can oxidize and degrade the adsorbed AF to regenerate the adsorption sites.Gel/CS/PPy/Zn_(3)In_(2)S_(6)can be reused at least 6 times,and the processing efficiency remains above 90%.
作者
邢建宇
黄菊梅
王西
杨飞莹
白玥皓
单宇宸
XING Jian-yu;HUANG Ju-mei;WANG Xi;YANG Fei-ying;BAI Yue-hao;SHAN Yu-chen(School of Water and Environment,Ministry of Education,Chang′an University,Xi′an 710054,Shaanxi Province,China;Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region,Ministry of Education,Chang′an University,Xi′an 710054,Shaanxi Province,China;SINO Shaanxi Nuclear Industry Comprehensive Analysis Testing Co.,Ltd.,Xi′an 710024,Shaanxi Province,China)
出处
《化学工程》
CAS
CSCD
北大核心
2023年第4期12-17,共6页
Chemical Engineering(China)
基金
陕西省教育厅科学研究计划项目资助(22JE003)
省级大学生创新创业训练计划项目(S202210710219)。
