Open AccessEnvironmental Stability of High Temperature Molten Vitreous Residue of Hazardous Waste
Author(s) -
XiuTeng Wang,
Guoliang Liu,
Fei Fang,
Ling Lin,
Zheng Yang,
Dongfeng Gao,
Xiaoxin Zhang,
Jin Huang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/647/1/012082
Subject(s) - vitrification , hazardous waste , dissolution , residue (chemistry) , melting temperature , chemical stability , toxicity characteristic leaching procedure , leaching (pedology) , materials science , amorphous solid , chemical engineering , chemistry , waste management , environmental science , organic chemistry , composite material , medicine , soil water , soil science , engineering , andrology
Vitrification technology is one of the harmless treatment methods for hazardous waste containing heavy metals and other harmful substances, converting solid waste into vitreous residue with amorphous structure by high temperature melting. In this paper, we propose the acid dissolution rate in acidic environment to characterize the environmental stability of molten vitreous residues. We have tested six high temperature melting residues from different enterprises. The results of our experiments show that the higher the degree of vitrification, the lower the acid dissolution rate, and most of them are similar to basalt, quartz and architectural glass. This work demonstrate that the vitreous residue produced by high temperature melting has high stability and low leaching toxicity. Vitrification technology can solidify heavy metals and other harmful substances in the dense three-dimensional structure of glass state.