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J Environ Manage

Title:		Synthesis of a perovskite-type catalyst from Cr electroplating sludge for effective catalytic oxidization of VOC
Author(s):		Bai H; Wang Z; Zhang J; Wu J; Yue Y; Liu Q; Qian G;
Address:		"SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road., Shanghai, 200444, PR China. SHU Center of Green Urban Mining & Industry Ecology, School of Environmental and Chemical Engineering, Shanghai University, No. 381 Nanchen Road., Shanghai, 200444, PR China. Electronic address: irujam@t.shu.edu.cn. MGI of Shanghai University, Xiapu Town, Xiangdong District, Pingxiang City, Jiangxi, 337022, PR China. MGI of Shanghai University, Xiapu Town, Xiangdong District, Pingxiang City, Jiangxi, 337022, PR China. Electronic address: yueyang0013@shu.edu.cn"
Journal Title:		J Environ Manage
Year:		2021
Volume:		20210610
Issue:
Page Number:		113025 -
DOI:		10.1016/j.jenvman.2021.113025
ISSN/ISBN:		1095-8630 (Electronic) 0301-4797 (Linking)
Abstract:		"Chromium-containing electroplating sludge usually lacked proper disposal and recycling. High-temperature melting was a technology aiming to form glass-phase slag for the stabilizations of heavy metals. This work investigated the possibility of forming perovskite-like phase by chromium-containing sludge using high-temperature melting. The formed material was applied in catalytic oxidization of volatile organic compound. As a result, Ca(2+)-doped LaCrO(3) was formed according to XRD and HRTEM. When Ca(2+) doping reached 33%, i.e., La(0.67)Ca(0.33)CrO(3), surface oxygen species of the obtained catalyst was increased to 65.7%, which was detected by XPS, resulting in a toluene removal of 50% at 302 degrees C. Besides, the activity was stable for over 50 h. In addition, the doping amount was as high as 40 mol% of Cr in the catalyst. Based on these results, a high-value-added catalyst was produced by the hazardous waste, which was in favor of hazardous-waste recycling as well as high-temperature-melting development"
Keywords:		Calcium Compounds *Electroplating Oxides Sewage Titanium *Volatile Organic Compounds Catalytic oxidization Electroplating sludge High-temperature melting Perovskite Volatile organic compound;
Notes:		"MedlineBai, He Wang, Zongfang Zhang, Jia Wu, Jianzhong Yue, Yang Liu, Qiang Qian, Guangren eng England 2021/06/14 J Environ Manage. 2021 Sep 15; 294:113025. doi: 10.1016/j.jenvman.2021.113025. Epub 2021 Jun 10"