Mechanisms and influencing factors of biomineralization based heavy metal remediation: A review

Biogeotechnics, Journal Year: 2023, Volume and Issue: 1(3), P. 100039 - 100039

Published: Sept. 1, 2023

Heavy metal contamination of soil and water is one the most prominent environmental issues worldwide. Through bioaccumulation biomagnification food chain, heavy metals can be enriched hundreds times eventually enter human body, posing a major threat to health. Biomineralization has greatest potential become an efficient environmentally friendly remediation technology received much attention in recent decades. This review summarizes latest progress biomineralization on carbonate precipitation phosphate remediation. Both microorganisms (including bacteria fungi) enzymes induce precipitation, converting free ions into insoluble salts. However, mechanisms are significant different. For example, urea hydrolysis, which occurs intracellularly when urease-producing (UPB) used, commonly used mechanism for based bioremediation. In contrast, solubilization by either or organic acids secreted solubilizing (PSB) extracellular, both soluble phosphorus decomposed PSB. Moreover, some influencing factors such as different species microorganism, conditions that may affect bioremediation were also summarized this paper. The challenges discussed. Based reviews previous studies, comprehensive understanding removal through microorganism increased, thus promotes applications treatment large-scale contaminated sites.

Language: Английский

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Exceptional anti-toxic growth of water spinach in arsenic and cadmium co-contaminated soil remediated using biochar loaded with Bacillus aryabhattai

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 469, P. 133966 - 133966

Published: March 5, 2024

Language: Английский

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Antibiotics-heavy metals combined pollution in agricultural soils: Sources, fate, risks, and countermeasures

Green Energy & Environment, Journal Year: 2024, Volume and Issue: unknown

Published: July 1, 2024

Agricultural soil is related to food security and human health, antibiotics heavy metals (HMs), as two typical pollutants, possess a high coexistence rate in the environmental medium, which extremely prone inducing antibiotic-HMs combined pollution. Recently, frequent activities have led more prominent antibiotics-HMs contamination agricultural soils, especially production spread of antibiotic resistance genes (ARGs), metal (MRGs), resistant bacteria (ARB), complexes (AMCs), seriously threaten ecology health. This review describes main sources (Intrinsic manmade sources), composite mechanisms (co-selective resistance, oxidative stress, Joint toxicity mechanism), fate potential risks (soil ecological health risks) HMs soils. Finally, current effective source blocking, transmission control, attenuation strategies are classified for discussion, such application additives barrier materials, well plant animal remediation bioremediation, etc., pointing out that future research should focus on whole chain process "source-process-terminal", intending provide theoretical basis decision-making reference research.

Language: Английский

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Biochar Application Reduces Saline–Alkali Stress by Improving Soil Functions and Regulating the Diversity and Abundance of Soil Bacterial Community in Highly Saline–Alkali Paddy Field

Sustainability, Journal Year: 2024, Volume and Issue: 16(3), P. 1001 - 1001

Published: Jan. 24, 2024

Saline–alkali soils seriously restrict the soil functions and growth diversity of microorganisms. Biochar can alleviate negative effects saline–alkali stress. However, it remains unclear how biochar reduces stress by improving regulating abundance bacterial community in highly paddy fields. To address this, a field experiment was conducted using two nitrogen application levels (0 225 kg ha−1) four rates (0, 1.5%, 3.0%, 4.5% biochar, w/w). The results show that, compared with C0, application, especially when combined N fertilizer, significantly decreased pH, exchangeable sodium percentage (ESP), saturated paste extract (ECe), adsorption ratio (SAR) while increasing cation exchange capacity (CEC). These indicated that effectively reduce increased content total (TN), alkali-hydrolysable (AN), available P (AP), K (AK), organic matter (SOM), C/N ratio, both or without fertilization. Furthermore, further relative communities modified structure soils. Under C3N2, C2N2, C1N2, Chao1 10.90%, 10.42%, 1.60% to C0N2. Proteobacteria, Bacteroidetes, Chloroflexi were top three phyla abundance. Proteobacteria reducing Bacteroidetes Chloroflexi, regardless Correlation analysis showed improvements chemical properties, as well nutrient bioavailability after had positive effect on

Language: Английский

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Synergistic enhancement of cadmium immobilization and soil fertility through biochar and artificial humic acid-assisted microbial-induced calcium carbonate precipitation

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 476, P. 135140 - 135140

Published: July 7, 2024

Language: Английский

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Advancing Slope Stability and Hydrological Solutions Through Biocementation: A Bibliometric Review

Hydrology, Journal Year: 2025, Volume and Issue: 12(1), P. 14 - 14

Published: Jan. 13, 2025

Biocementation is an innovative and sustainable technique with wide-ranging applications in slope stabilization, watershed management, erosion control. Despite its potential, comprehensive evaluations of use hydrology geotechnical engineering are limited. This study addresses this gap through a bibliometric analysis 685 articles (2013–2023) from the Scopus database, employing VOSviewer RStudio to explore global research trends, key contributors, emerging themes. The reveals that China, United States, Japan leading contributors field, significant advancements microbial-induced (MICP) enzyme-induced calcium carbonate precipitation (EICP) techniques. These methods have demonstrated effectiveness improving soil strength, reducing erosion, enhancing hydrological properties such as infiltration, runoff control, water retention. Co-occurrence identifies interdisciplinary connections between geotechnics hydrology, highlighting clusters focused on biomineralization, resistance, durability. findings underscore biocementation’s pivotal role addressing sustainability challenges by providing environmentally friendly alternatives traditional stabilization not only maps current landscape but also offers valuable insights into practical implications biocementation for stability laying foundation future practices.

Language: Английский

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Recent studies on the comprehensive application of biochar in multiple environmental fields

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 421, P. 138495 - 138495

Published: Aug. 17, 2023

Language: Английский

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Effects of biochar pyrolysis temperature on uranium immobilization in soil remediation: Revealed by 16S rDNA and metabolomic analyses

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 466, P. 133502 - 133502

Published: Jan. 11, 2024

Language: Английский

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Influence of biochar in the calcite precipitation of sandy soil using sporosarcina ureae

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 359, P. 121048 - 121048

Published: May 1, 2024

Language: Английский

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Biomass based biochar production approaches and its applications in wastewater treatment, machine learning and microbial sensors

Bioresource Technology, Journal Year: 2023, Volume and Issue: 391, P. 129904 - 129904

Published: Oct. 31, 2023

Language: Английский

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