Optimizing environmental pollution controls in response to textile dyeing sludge, incineration temperature, CaO conditioner, and ash minerals
Yükleniyor...
Dosyalar
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The dynamics of heavy metal speciation and flue gas emissions during the incineration of textile dyeing sludge (TDS) were quantified as a function of four addition levels of CaO, incineration temperature, and ash minerals using thermogravimetric analysis and experimental tube furnace. The TDS incineration was most improved with the addition of 10% CaO. The increased fractions of CaO coupled with the ash minerals changed the retention behaviors of eight heavy metals. The CaO addition increased the Cu, Zn, As, and Pb retentions, did not significantly change Cr, Mn, and Cd, but decreased the Ni retention. The CaO addition enhanced the speciation stability of Cu and transferred the Cr, Cd, and As speciations to the mobile fractions. The increased temperature weakened the Zn and Pb retentions and the speciation stabilities of As and Pb and turned the Cr, Mn, Ni, Cu, Zn, and Cd speciations into the stable fractions. The CaO addition inhibited HCN, NO, NO2, COS, SO2, CS2, and SO3 emissions from the TDS incineration. Neural network-basedmulti-response optimization was implemented to determine the optimal operational temperature for the TDS incineration and the reduction of the 12 gas emissions. The range of 640-755 degrees C with(out) 5% CaO appeared to be most beneficial in terms of both environmental quality and economic efficiency. (C) 2021 Elsevier B.V. All rights reserved.
Açıklama
National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)); Scientific and Technological Planning Project of Guangzhou, China; Research Fund Program of Guangdong Key Laboratory of Radioactive and Rare Resource Utilization; Pearl River S&T Nova Program of Guangzhou; Science and Technology Planning Project of Guangdong Province, China
Anahtar Kelimeler
Sludge Reduction, Pollution Control, Flue gases, Fluidized-Bed Combustion, Heavy-Metals, Sewage-Sludge
Kaynak
Science of the Total Environment
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
785
Sayı
Künye
Xie, C., Liu, J., Liang, J., Xie, W., Evrendilek, F., & Li, W. (2021). Optimizing environmental pollution controls in response to textile dyeing sludge, incineration temperature, CaO conditioner, and ash minerals. Science of The Total Environment, 785, 147219.
