Oxy-fuel co-combustion dynamics of phytoremediation biomass and textile dyeing sludge: Gas-to-ash pollution abatement
Yükleniyor...
Dosyalar
Tarih
2022
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The environmental pressures of major wastes in the circular economies can be abated leveraging the complementarity and optimal conditions of their co-combustion. The oxy-fuel co-combustion of phytoremediation biomass of Sedum alfredii Hance (SAH) and textile dyeing sludge (TDS) may be a promising choice for sustainable CO2 capture and a waste-to-energy conversion. This study characterized and quantified their co-combustion performances, kinetics, and interactions as a function of blend ratio, atmosphere type, and temperature. With a focus on the characteristic el-ements of SAH (Ca, K, Zn, and Cd) and TDS (Al and S), changes in the mineral phases and ash melting and slagging trends of K2O-Al2O3-SiO2 and CaO-Al2O3-SiO2 systems were quantified. The Zn and Cd residual rates of the co-combustion of 75% SAH and 25% TDS rose by 58.52% and 5.93%, respectively, in the oxy-fuel atmosphere at the 30% oxygen concentration, relative to the mono-combustion of SAH in the air atmosphere. The co-combustion in the oxy-fuel atmosphere at the 20% oxygen concentration delayed the release peaks of SO2, C2S, and H2S, while the Ca-rich SAH captured S in TDS through the formation of CaSO4. Our findings provide new and practical insights into the oxy-fuel co-combustion toward the enhanced co-circularity.
Açıklama
This research was financially supported by the National Natural Science Foundation of China (No. 51978175), the Scientific and Technological planning Project of Guangdong, China (No. 2021B1212040008, 20210217), the Scientific and Technological Planning Project of Guangzhou, China (No. 202103000004), and Research Fund Program of Guangdong Key Laboratory of Radioactive and Rare Resource Utilization Radioactive and Rare Resource Utilization (No. 2018B030322009).
Anahtar Kelimeler
Pollution Abatement, Oxy-Fuel Combustion, Gas Emissions, Mineral Transformation, Ash Slagging, Sewage-Sludge
Kaynak
Science of the Total Environment
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
825
Sayı
Künye
Wu, X., Liu, J., Wei, Z., Chen, Z., Evrendilek, F., & Huang, W. (2022). Oxy-fuel co-combustion dynamics of phytoremediation biomass and textile dyeing sludge: Gas-to-ash pollution abatement. Science of The Total Environment, 825, 153656.
