Ternary blends containing demercurated lighting phosphor and MSWI fly ash as high-performance binders for stabilizing and recycling electroplating sludge.
This paper describes the solidification and stabilization of electroplating sludge treated with a high-performance binder made from portland type-I cement, municipal solid waste incineration fly ash, and lighting phosphor powder (called as cement-fly ash-phosphor binder, CFP). The highest 28-day unconfined compressive strength of the CFP-treated paste was 816 kg/cm(2) at a ratio of cement to fly ash to lighting phosphor powder of 90:5:5; the strength of this composition also fulfilled the requirement of a high-strength concrete (>460 kg/cm(2) at 28 days). The CFP-stabilized sludge paste samples passed the Taiwanese EPA toxicity characteristic leaching procedure test and, therefore, could be used either as a building material or as a controlled low-strength material, depending on the sludge-to-CFP binder ratio.
Huang
Wu-Jang
WJ
National Ping-Tun University of Science and Technology, Department of Environmental Science and Engineering, Ping-Tun, Taiwan. wjhuang@mail.npust.edu.tw
Wu
Chia-Teng
CT
Wu
Chang-En
CE
Hsieh
Lin-Huey
LH
Li
Chang-Chien
CC
Lain
Chi-Yuan
CY
Chu
Wei
W
D002244:Carbon / Q000032:analysis*; D060729:Coal Ash; D003247:Conservation of Natural Resources; D052638:Particulate Matter / Q000032:analysis*; D017553:Phosphorus Compounds / Q000032:analysis*; D012722:Sewage; D018675:Toxicity Tests
D060729:Coal Ash; D052638:Particulate Matter; D017553:Phosphorus Compounds; D012722:Sewage; D002244:Carbon