Biochar co-pyrolyzed from peanut shells and maize straw improved soil biochemical properties, rice yield, and reduced cadmium mobilization and accumulation by rice: Biogeochemical investigations

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 466, P. 133486 - 133486

Published: Jan. 17, 2024

Biochar is an eco-friendly amendment for the remediation of soils contaminated with cadmium (Cd). However, little attention has been paid to influence and underlying mechanisms co-pyrolyzed biochar on bioavailability uptake Cd in paddy soils. The current study explored effects from peanut shells (P) maize straw (M) at different mixing ratios (1:0, 1:1, 1:2, 1:3, 0:1, 2:1 3:1, w/w), bacterial community fractionation soil, its by rice plant. addition, particularly P1M3 (P/M 1:3), significantly elevated soil pH cation exchange capacity, transferred mobile residual fraction, reduced availability rhizosphere soil. application decreased concentration tissues (root, stem, leaf, grain) 30.0%- 49.4%, compared control. Also, enhanced microbial diversity indices relative abundance iron-oxidizing bacteria Moreover, was more effective promoting formation iron plaque, increasing sequestration plaque than other treatments. Consequently, highest yield lowest accumulation were observed following application. This revealed feasibility applying facilitating Cd.

Language: Английский

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Pristine and Fe-functionalized biochar for the simultaneous immobilization of arsenic and antimony in a contaminated mining soil

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 469, P. 133937 - 133937

Published: March 6, 2024

Language: Английский

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Investigating the electron-scale adsorption mechanisms using DFT calculations and experimental studies in self-assembly magnetic biochar gel incorporated with graphene nanosheets for enhanced Sb(III) removal

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 487, P. 150740 - 150740

Published: March 26, 2024

Language: Английский

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Preparation and applications of iron/biochar composites in remediation of heavy metal contaminated soils: Current status and further perspectives

Environmental Technology & Innovation, Journal Year: 2024, Volume and Issue: 35, P. 103671 - 103671

Published: May 15, 2024

Biochar, as a cost-effective, efficient, and environmentally friendly material, has been widely applied in the environment. However, difficult solid-liquid separation, relatively underdeveloped pore structure, poor mechanical properties limited its development. In recent years, to over those disadvantages, iron/biochar composites have efficiently used for pollutant removal. Although many reports reported application of composites, none them yet focused on heavy metal contaminated soils. Given this, we summarized compared preparation approaches our work. The efficient metals removal soils their mechanisms action were also analyzed. We found that chemical reduction, thermal conversion, hydrothermal carbonization, co-precipitation, ball milling, green synthesis are commonly methods composite preparation. stronger potentials with pristine biochar because iron group can enrich cation exchange capacity, specific surface area, elemental morphology, functional groups, aromatic degree graphitization enhance ability from quantitative relationship between technologies efficiency metals, long-term remediation behavior, practical validation remained unsolved. joint plants or soil animals may be more effective approach remediation.

Language: Английский

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Biotechnological strategies for remediation of arsenic-contaminated soils to improve soil health and sustainable agriculture

Soil & Environmental Health, Journal Year: 2024, Volume and Issue: 2(1), P. 100061 - 100061

Published: Jan. 23, 2024

Soil health is the foundation of sustainable agriculture, and its preservation paramount in global arsenic (As) contamination challenges. As a critical issue for environmental agricultural sustainability. Rapid urbanization industrial expansion release toxic heavy metal(loid)s, including As, into soil. Arsenic disrupts rhizosphere ecosystem, affecting plant health, microbial communities, overall soil functionality. Ensuring face imperative human well-being developing resilient, environment. This review signifies need comprehensive strategies to revitalize ecosystems, promoting resilience long-term ecological balance. Advanced biotechnological approaches, particularly bioremediation phytoremediation, remediation, mycoremediation, nano-remediation, other integrative strategies, are highlighted their effectiveness addressing health. Conventional physico-chemical techniques make unsuitable agriculture by disrupting microenvironment. Consequently, urgent remediation demands adoption eco-friendly such as bioremediation, rhizoremediation, enhance Development transgenic lines genetically modified organisms (GMOs) effective tools reducing burden. Sphingomonas desiccabilis Bacillus idriensis bacteria expressing arsM gene, well subtilis transformed with potential GMOs that show promising results reduce Transgenic rice, incorporating gene from Rhodopseudomonas palustris, demonstrated 10 times more volatile arsenicals reduced accumulation grain. Additionally, use As-hyperaccumulating species conventional methods, like chemical-assisted phytoextraction, decontaminating As-polluted Future research should explore contributions novel regions affected contamination.

Language: Английский

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