title: Stabilization of chromium-bearing electroplating sludge with MSWI fly ash-based Friedel matrices.
abstract: This work investigated the feasibility and effectiveness of MSWI fly ash-based Friedel matrices on stabilizing/solidifying industrial chromium-bearing electroplating sludge using MSWI fly ash as the main raw material with a small addition of active aluminum. The compressive strength, leaching behavior and chemical speciation of heavy metals and hydration phases of matrices were characterized by TCLP, XRD, FTIR and other experimental methods. The results revealed that MSWI fly ash-based Friedel matrices could effectively stabilize chromium-bearing electroplating sludge, the formed ettringite and Friedel phases played a significant role in the fixation of heavy metals in electroplating sludge. The co-disposal of chromium-bearing electroplating sludge and MSWI fly ash-based Friedel matrices with a small addition of active aluminum is promising to be an effective way of stabilizing chromium-bearing electroplating sludge.
authors.affiliation: School of Environmental Engineering, Shanghai University, Shanghai, PR China. grqian@shu.edu.cn
authors.forename: Guangren
authors.initials: G
authors.lastname: Qian
authors.forename: Xiaoyan
authors.initials: X
authors.lastname: Yang
authors.forename: Shixiang
authors.initials: S
authors.lastname: Dong
authors.forename: Jizhi
authors.initials: J
authors.lastname: Zhou
authors.forename: Ying
authors.initials: Y
authors.lastname: Sun
authors.forename: Yunfeng
authors.initials: Y
authors.lastname: Xu
authors.forename: Qiang
authors.initials: Q
authors.lastname: Liu
mesh_terms: D000535:Aluminum; D002244:Carbon / Q000737:chemistry*; D002857:Chromium / Q000737:chemistry*; D060729:Coal Ash; D004595:Electroplating; D019216:Metals, Heavy; D008903:Minerals; D052638:Particulate Matter / Q000737:chemistry*; D012722:Sewage / Q000737:chemistry*
chemical_list: D060729:Coal Ash; D019216:Metals, Heavy; D008903:Minerals; D052638:Particulate Matter; D012722:Sewage; C501337:ettringite; D002857:Chromium; D002244:Carbon; D000535:Aluminum