Solidification/stabilization of soil heavy metals by alkaline industrial wastes: A critical review

Jiang, Qi; He, Yongmei; Wu, Yonglin; Dian, Bo; Zhang, Jilai; Li, Tianguo; Ming, Jiang

doi:10.1016/j.envpol.2022.120094

Cited by 84 publications

(14 citation statements)

References 138 publications

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“…The alkaline range was not employed in this study because most metals (especially heavy metals) begin to form insoluble species such as oxides/hydroxides around neutral pH [83] and can continue to form [X(OH) y ] z complexes in further alkali range [84] . The strongly basic solution could compromise the real concentration of the analytes and affect the quantification step in this work [83,85–87] …”

Section: Resultsmentioning

confidence: 99%

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Bottom‐Up Synthesis Optimization Through The Design Of Experiments Using Blue N,S‐Carbon Dots With Interesting Affinity For Potentially Toxic Elements

Silva de Araújo,

Costa Ferrer,

Seagesser Santos

et al. 2023

ChemistrySelect

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Water contamination by heavy metals is a global issue for environmental safety and new technologies have been developed aim to evaluate the contamination, mainly by anthropogenic action. In this work, we synthesized blue light‐emitting carbon dots (CDs) from ionic sources for sensing applications of heavy metal cations in an aqueous solution. Spectroscopic and morphologic characteristics of the CDs were performed using Fourier transform infrared (FTIR) spectroscopy, fluorescence, and absorption techniques, besides transmission electron microscopy (TEM), dynamic light scattering (DLS), and zeta potential (ZP) measurements. Moreover, a two‐level full factorial design of experiments (DOE) was carried out to achieve the best hydrothermal parameters of synthesis, including the number of mols of precursors, temperature, and reaction time. The pH and buffer nature were evaluated for the quantification step to improve the N,S‐CDs response. We have obtained a range of 2.23–8.57 μmol L−1 (among Bi3+, Cd2+, Hg22+, Hg2+, Pb2+, and Sb3+) in terms of limit of detection (LOD). These aspects frame the material as a potential sensor for the identification of heavy metals in water.

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Section: Resultsmentioning

confidence: 99%

“…[84] The strongly basic solution could compromise the real concentration of the analytes and affect the quantification step in this work. [83,[85][86][87]…”

Section: Evaluation Of Ph and Buffer Nature Studymentioning

confidence: 99%

Bottom‐Up Synthesis Optimization Through The Design Of Experiments Using Blue N,S‐Carbon Dots With Interesting Affinity For Potentially Toxic Elements

Silva de Araújo,

Costa Ferrer,

Seagesser Santos

et al. 2023

ChemistrySelect

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show abstract

“…This initiates and exacerbates soil salinization, further promoting land degradation and reducing arable land productivity. [81][82][83] 5 Conclusion and prospects Due to its small particle size, large specic surface area, high pH, charged nature, and solubility, soda residue exhibits strong adsorption capacity. Furthermore, its surface area can be increased via appropriate modication to enhance its adsorption performance.…”

Section: Soil Remediationmentioning

confidence: 99%

“…This initiates and exacerbates soil salinization, further promoting land degradation and reducing arable land productivity. 81–83…”

Section: The Risks and Challenges Of Soda Residue In Environmental Ap...mentioning

confidence: 99%

Research status of soda residue in the field of environmental pollution control

Zong,

Gong,

Zhang

et al. 2023

RSC Adv.

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“…The chemical remediation mainly includes vitrification technique, electrochemistry, chemical leaching, chemical fixation, adsorption, etc. [ 15 , 16 , 17 ]. The chemical fixation and adsorption methods are widely used to treat heavy metal contamination in industrial sewage, groundwater and soil.…”

Section: Introductionmentioning

confidence: 99%

Red Mud-Amended Soil as Highly Adsorptive Hybrid-Fill Materials for Controlling Heavy Metal Sewage Seepage in Industrial Zone

Lei

Liu

et al. 2022

IJERPH

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With the rapid development of urbanization, the problem of environmental pollution is becoming more and more serious. As a major pollutant, heavy metals have caused serious contamination in soil and groundwater. In order to prevent the diffusion of heavy metals in the soil from industrial sewage, the concept of hybrid-fill layer construction improved by red mud was proposed in this study. This study examines the adsorption capacities of lead and zinc ions and engineering characteristics on red mud-amended soils by direct shear, permeability, adsorption, desorption batch and column tests. Two mixing methods, full particle size displacement mixing and partial particle size displacement mixing, were adopted. The results showed that red mud effectively increased the adsorption capacity of soil to heavy metal ions, and the desorption rate of ions after adsorption was less than 3%, which had good anti-desorption ability. The optimum content of red mud in hybrid-fill material can be determined as 20%. The direct shear test showed that the internal friction angle of hybrid-fill material was 38.9°, and the cohesive force was 30.3 kPa, which met the engineering strength requirements of foundation materials. Based on the test results, red mud can be used as a barrier material to prevent heavy metal contamination in industrial sewage from diffusion, which controls not only heavy metal contamination but also consumes industrial by-products.

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Solidification/stabilization of soil heavy metals by alkaline industrial wastes: A critical review

Cited by 84 publications

References 138 publications

Bottom‐Up Synthesis Optimization Through The Design Of Experiments Using Blue N,S‐Carbon Dots With Interesting Affinity For Potentially Toxic Elements

Bottom‐Up Synthesis Optimization Through The Design Of Experiments Using Blue N,S‐Carbon Dots With Interesting Affinity For Potentially Toxic Elements

Research status of soda residue in the field of environmental pollution control

Red Mud-Amended Soil as Highly Adsorptive Hybrid-Fill Materials for Controlling Heavy Metal Sewage Seepage in Industrial Zone

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