Effect of coal-gangue derived calcium silicate hydrate on the growth of pakchoi in copper contaminated soil

Environmental Technology, Год журнала: 2025, Номер unknown, С. 1 - 14

Опубликована: Май 22, 2025

ABSTRACTThis study investigated the effect of calcium silicate hydrate (C-S-H) on copper (Cu) uptake, availability, geochemical speciation, and immobilization in soil-plant system. C-S-H, prepared from coal gangue, was added to Cu-contaminated soil assess its pakchoi growth. C-S-H application increased pH, organic matter content, cation exchange capacity while reducing electrical conductivity. It also microbial biomass enzyme activities Cu bioavailability, mobility, leaching toxicity. The possible fixation mechanisms by media included ion exchange, complexation, precipitation. Moreover, fresh biomass, dry plant height, root length significantly 5.81-23.74%, 8.48-34.69%, 5.13-29.42%, 6.78-28.81%, respectively. content shoots roots decreased 17.30-66.04% 11.77-58.09%, These findings demonstrate that is an effective amendment for accumulation enhances solidification ability contaminated soil.

Язык: Английский

Influence of mechanical activation of coal gangue on the strength and microstructure of geopolymer

Construction and Building Materials, Год журнала: 2025, Номер 486, С. 141977 - 141977

Опубликована: Май 31, 2025

Язык: Английский