Biological and green remediation of heavy metal contaminated water and soils: A state-of-the-art review

Chemosphere, Год журнала: 2023, Номер 332, С. 138861 - 138861

Опубликована: Май 5, 2023

Язык: Английский

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Feasibility study of applying a graphene oxide-alginate composite hydrogel to electrokinetic remediation of Cu(II)-contaminated loess as electrodes

Separation and Purification Technology, Год журнала: 2023, Номер 322, С. 124361 - 124361

Опубликована: Июнь 17, 2023

Язык: Английский

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Applying a nanocomposite hydrogel electrode to mitigate electrochemical polarization and focusing effect in electrokinetic remediation of a Cu- and Pb-contaminated loess

Environmental Pollution, Год журнала: 2023, Номер 333, С. 122039 - 122039

Опубликована: Июнь 17, 2023

Язык: Английский

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Effect of a harsh circular environment on self-healing microbial-induced calcium carbonate materials for preventing Pb2+ migration

Environmental Technology & Innovation, Год журнала: 2023, Номер 32, С. 103380 - 103380

Опубликована: Сен. 29, 2023

Microbially induced carbonate precipitation (MICP) is increasingly being explored for Pb-contaminated water bodies and soil remediation. However, the Pb-related precipitate resulting from MICP process can possibly leach acid over time when subjected to harsh environments, causing serious threats human health. In this study, first time, self-healing microbial-induced calcium (MICC) materials are proposed applied prevent Pb2+ migration where leached after spore germination, spore-vegetative cell transformation, urease secretion, urea hydrolysis, thereby producing spore-containing precipitation. This was repeated five times explore effect of a circular environment on MICC materials. Results indicated that Pb immobilization would have deteriorated if inosine trace elements had not been intervened during germination respectively. The spores vegetative cells provided extra nucleation sites minerals attach. extracellular polymeric substances (EPSs) combined with functional groups chemical bonds their surrounding environments. scanning electron microscopy–energy-dispersive X-ray spectroscopy (SEM–EDS) images also cerussite mineral precipitated prior calcite because more affinity combine CO32- OH-. An efficiency greater than 95% remained nearly same cycles, while it reduced very quickly less 10% three cycles neglecting materials, thus highlighting relative merits.

Язык: Английский

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Elimination of copper obstacle factor in anaerobic digestion effluent for value-added utilization: Performance and resistance mechanisms of indigenous bacterial consortium

Water Research, Год журнала: 2024, Номер 252, С. 121217 - 121217

Опубликована: Янв. 31, 2024

Язык: Английский

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Temperature-driven coupled transport of pollutants and suspended particles established by granular thermodynamics

International Journal of Heat and Mass Transfer, Год журнала: 2024, Номер 228, С. 125645 - 125645

Опубликована: Май 2, 2024

Язык: Английский

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Deterioration phenomenon of Pb-contaminated aqueous solution remediation and enhancement mechanism of nano-hydroxyapatite-assisted biomineralization

Journal of Hazardous Materials, Год журнала: 2024, Номер 470, С. 134210 - 134210

Опубликована: Апрель 4, 2024

Язык: Английский

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Granular Thermodynamic Migration Model Suitable for High‐Alkalinity Red Mud Filtrates and Test Verification

International Journal for Numerical and Analytical Methods in Geomechanics, Год журнала: 2025, Номер unknown

Опубликована: Янв. 11, 2025

ABSTRACT A theoretical model of the migration process high‐alkalinity red mud particles in porous media was derived from granular thermodynamics, complying with complementary motion two‐phase flows (i.e., hydroxide ions and powder). From perspective energy dissipation provoked by particle molecular thermal motion, a suspended under mixed conditions established. This naturally considers complex adsorption/desorption between (or particles) medium solid matrix, as well particles. Moreover, reveals dynamic deposition effect powder multiphase interactions during temporal spatial variations. The progression substances transient injection filtrate different pH values continuous change were verified experiments.

Язык: Английский

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Field experimentation of bio-cementation using low-cost cementation media for preservation of slope surface

Case Studies in Construction Materials, Год журнала: 2023, Номер 18, С. e02086 - e02086

Опубликована: Апрель 18, 2023

Microbial induced carbonate precipitation (MICP) is a promising bio-cementation method that involves ureolytic bacteria to improve the geotechnical properties of soil. The laboratory-scale studies carried out in recent past showed MICP can be potential alternative for slope surface preservation. However, use analytical-grade chemicals makes this too expensive, limiting applicability especially when implicated at field-scale. purpose research work was assess effectiveness using inexpensive low-grade in-situ stabilization surface. Two test plots were established project site (Hokkaido expressway slope, Japan) and subjected treatment via surficial spraying. One treated cementation media formulated by (inclusive fertilizer urea, snow-melting agent beer-yeast), while typical used treat other plot. After 20 days treatment, surfaces evaluated strength, CaCO3 content, scanning electron microscopy, energy dispersive spectroscopy (EDS) X-ray diffraction (XRD) analyses. outcomes indicated significantly improved chemicals; stiff layer desirably formed depth 5 – 10 cm with strength content ranges 0.14 1.02 MPa 0.56 3.7%, respectively. results are compared discussed, challenges pointed way forward. Cost analysis disclosed material cost reduced around thirty-seven-fold (by 97%) media. While demonstrating chemicals, field-scale experiment could contribute narrow down gap between present-state real-scale deployment technology.

Язык: Английский

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Study on Cu- and Pb-contaminated loess remediation using electrokinetic technology coupled with biological permeable reactive barrier

Journal of Environmental Management, Год журнала: 2023, Номер 348, С. 119348 - 119348

Опубликована: Окт. 21, 2023

Язык: Английский

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