Scholarlink

<p>The concentrated solution sludge (CSS) produced by the immersion combustion evaporation process has extremely high soluble salt content. Ground-granulated blast-furnace slag (GGBS) and municipal solid waste incineration (MSWI) by-products geopolymer is adopted for solidification/stabilization (S/S) of CSS. A series of unconfined compressive strength (UCS) test, water immersion tests, microscopic observation tests and leaching toxicity tests were carried out on the solidified sludge to investigate the S/S effect and mechanism of the prepared geopolymer on CSS. Results show that the MSWI by-products can effectively promote the geopolymerization of precursors and improve the compressive strength and water stability of the solidified CSS. The leaching concentration of heavy metal and PCDD/Fs [polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs)] can satisfy the relevant standards of China. The geopolymeric gels generated by GGBS-based geopolymer can effectively cement and wrap the CSS particles, which is the S/S mechanism of the CSS solidified by the synthetic geopolymer. The energy consumption and carbon emissions of using this geopolymer for solidifying the CSS are much lower than those of using cement/MSWI by-products.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Experimental study on solidification/stabilization of concentrated solution sludge with Granulated ground blast-furnace slag and municipal solid waste incineration by-products geopolymer

  • 期刊论文

  • 发表日期：

    2025年7月11日

查看全文
  • Deluan Feng,
  • Junsheng Zheng,
  • Lirui Zhou,
  • Dongyao Chen,
  • Jie Wang,
  • Shihua Liang

摘要

The concentrated solution sludge (CSS) produced by the immersion combustion evaporation process has extremely high soluble salt content. Ground-granulated blast-furnace slag (GGBS) and municipal solid waste incineration (MSWI) by-products geopolymer is adopted for solidification/stabilization (S/S) of CSS. A series of unconfined compressive strength (UCS) test, water immersion tests, microscopic observation tests and leaching toxicity tests were carried out on the solidified sludge to investigate the S/S effect and mechanism of the prepared geopolymer on CSS. Results show that the MSWI by-products can effectively promote the geopolymerization of precursors and improve the compressive strength and water stability of the solidified CSS. The leaching concentration of heavy metal and PCDD/Fs [polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs)] can satisfy the relevant standards of China. The geopolymeric gels generated by GGBS-based geopolymer can effectively cement and wrap the CSS particles, which is the S/S mechanism of the CSS solidified by the synthetic geopolymer. The energy consumption and carbon emissions of using this geopolymer for solidifying the CSS are much lower than those of using cement/MSWI by-products.