Immobilization enhancement of heavy metals in lightweight aggregate by component regulation of multi-source solid waste

Li, Baodong; Jian, Shouwei; Zhu, Jiaoqun; Lv, Yang; Gao, Xin; Huang, Jianxiang

doi:10.1016/j.chemosphere.2023.140389

Cited by 5 publications

(2 citation statements)

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“…Therefore, the sulfur oxides in LS existed in the form of sulfate [50,51]. Meanwhile, the ion exchange theory could also be applied on the lithium slag, where hydrogen ions and mineral cations could dissociate easily along the Li-O covalent bonds [49].…”

Section: Characteristics Of Lithium Slagmentioning

confidence: 99%

“…The slag was mainly composed of silica, alumina, sulfur oxide and calcium oxide, which was relatively similar to clay minerals, making it suitable as a soil amendment to improve soil performance. Through the analysis of LS composition, a highly chemically selective ion exchange was found between Li + in spodumene (LiAlSi 2 O 6 ) and H + in H 2 SO 4 solution [49], which could be explained by the following reaction equation: Therefore, the sulfur oxides in LS existed in the form of sulfate [50,51]. Meanwhile, the ion exchange theory could also be applied on the lithium slag, where hydrogen ions and mineral cations could dissociate easily along the Li-O covalent bonds [49].…”

Section: Characteristics Of Lithium Slagmentioning

confidence: 99%

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Effect of Lithium Slag Application on Saline–Alkali Soil Amelioration and Vegetable Growth

Zhang,

Yao,

Zhai

et al. 2024

Sustainability

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Increased attention has been attracted to saline–alkali soil amelioration due to the growing serious salinization of soils in the world. Lithium slag (LS) is an acid by-product of lithium production with potential properties to ameliorate alkalinity in saline–alkali soils. In this study, LS was reused as a saline–alkali soil amendment and potted plant experiments in a greenhouse were performed to evaluate the effect of LS application on the soil amelioration and the growth of vegetables (roquette and radish) in the saline–alkali soil during the 5-week growth period. LS was added at the amount of 0.5%, 1.0%, 2.0%, 5.0%, 8.0% and 10.0% (w/w) levels. Results showed that saline–alkali soil pH dropped obviously with the increase in LS application. Accordingly, the germination, survival and growth of roquette and radish were significantly improved by LS addition, especially at the optimum amount of 0.5% and 1.0% (w/w) in the saline–alkali soil. In contrast to the untreated saline–alkali soil, LS addition at 0.5% and 1.0% (w/w) levels increased the roquette’s height by 49.7% and 36.1% and increased the radish’s height by 54.6% and 53.7%, respectively. However, the soil electrical conductivity (EC) and soluble salt content increased with the addition of LS, and the salt stress induced by excessive LS (over 5.0% level) could inhibit the growth of plants. This study proposes a new way for the effective application of LS in the amelioration of saline–alkali soil in order to realize environment and resource sustainability.

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Section: Characteristics Of Lithium Slagmentioning

confidence: 99%