RSM Optimization of Incineration Bottom Ash Cementitious Material and Safety Evaluation
LIU Xinzhong
HUAN Dongdong
QIU Chenhui
ZHANG Mengcheng
YANG Kang
Abstract：To recycle the municipal solid waste incineration bottom ash(MSWI-BA),the effects of different active excitation methods on the 28-day compressive strength of mortar test blocks prepared by pretreated MSWI-BA were studied by the method of response surface central composite test method(RSM-CCD).The results show that the MSWI-BA cementitious material has good cementitious activity by active excitation.The RSM-CCD test simulates that the 28-day compressive strength of the cement mortar test block with 10％MSWI-BA reaches 46.04 MPa under the optimal experimental conditions.Under this condition,the 28-day compressive strength of the cement mortar test block reaches 46.15 MPa,which is highly coincident with the predicted value.This method provides a solution for the resource utilization of MSWI-BA.Finally,the safety of the cementitious material is evaluated.The leaching performance of heavy metals meets the requirements of GB 30760-2014 Technical Specification for Coprocessing of Solid Waste in Cement Kiln.
Keywords：municipal solid waste incineration bottom ash(MSWI-BA)response surface method(RSM)central composite designcompressive strengthheavy metal leaching
Publication Date：2024-02-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 161-166,173 )