Removal of tetracycline by steel slag-red mud composite pellets: Adsorption performance and mechanism

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162363 - 162363

Published: Jan. 1, 2025

Language: Английский

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Exposure sources, intake pathways and accumulation of lead in human blood

Soil Security, Journal Year: 2024, Volume and Issue: 15, P. 100150 - 100150

Published: June 1, 2024

Lead (Pb) is a toxic heavy metal and its long-term accumulation in human bodies can lead to serious diseases. Investigation on Pb exposure provides an effective intervention opportunity reduce the blood levels (BLLs) of populations. Although phase-out gasoline has been conducted many developing countries (e.g., China), BLLs these populations are still higher than alert BLL (5.0 μg/dL) set by World Health Organization (WHO) Centers for Disease Control Prevention USA (CDC). Here, we reviewed different summarized sources intake pathways which were associated with dietary non-dietary intake. Extensive progress made studies soil biogeochemistry plant biological processes, including effects pH, redox potential, Fe/Mn oxides, organic matter availability Pb, as well mechanisms regulating absorption root transport from shoot. The oral-nasal respiration skin infiltration have specifically identified main causes increased exposed sources. In countries, complex intakes increase BLLs, making strategies difficult. This review systematic understanding processes environment helps guide safe enhance health.

Language: Английский

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Fly ash-doped biochar fabricated by pyrolysis and hydrothermal strategies: characteristics and potentialities of carbon sequestration

Carbon Research, Journal Year: 2025, Volume and Issue: 4(1)

Published: Feb. 6, 2025

Abstract The oxidation of biochar occurs due to both natural and human influences during the soil carbon sequestration process. Therefore, it is crucial produce high-stability achieve neutrality. Fly ash-doped was obtained from fly ash corn stalks by employing hydrothermal/pyrolysis treatment, along with alkali impregnation at different temperatures. microstructural characteristics potentials were studied as an essential performance parameter that influenced mineral doping treatment temperature. yield retention P500-1:2 improved 54.15% 6.81%, respectively, loss following H 2 O only 9.93% depicted results. In comparison hydrothermal biochar, pyrolysis superior in terms its potential. SiO , Al 3 other components continue dissolve high temperatures react promoting formation aromatic generating a physical protective layer prevent oxidation, hence improving chemical thermal stability biochar. High temperature interaction also contribute structure (H:C < 0.4) formation, significantly specific surface area Graphical

Language: Английский

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Enhanced Stabilization of Lead in Soil Using Novel Biochar Composites Under Simulated Accelerated Aging Conditions

Sustainability, Journal Year: 2025, Volume and Issue: 17(6), P. 2563 - 2563

Published: March 14, 2025

Straw biochar (BC) and four innovative environmental materials (AFFA/BC) were synthesized via oxygen-limited pyrolysis at different ratios applied for the remediation of lead (Pb)-contaminated soils. Accelerated aging, which mimics effects natural aging on heavy metal fixation properties, was induced through alternating dry wet conditions. Two models, are based conditional probability-induced failures, developed to characterize process more effectively. The results indicated that novel material presented elevated Si, Al, Na contents, increased specific surface area, pore volume, yield, formation chemical bonds such as T-O-T T-O (T = Si or Al). Simultaneously, synchronous asynchronous spectral analysis methods used demonstrate fly ash leads new protects functional groups from destructive high temperatures. Compared with original biochar, application Pb-contaminated soil pH, cation exchange capacity (CEC), organic matter (SOM) content while reducing toxic Pb leaching, resulting in conversion a stable residual state. Throughout wet–and–dry cycles, leaching concentration gradually increased, AFFA/BC-2 lower rate. This study provides method preparing low-cost green amendments, have great potential repairing HM-contaminated achieving value-added utilization coal-based solid waste agricultural waste.

Language: Английский

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Remediation potential of biochar for As and Cd by modifying soil physicochemical properties: a conceptual model elucidating stabilization mechanism based on conditional probability theory

Biochar, Journal Year: 2025, Volume and Issue: 7(1)

Published: March 18, 2025

Language: Английский

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Study on the Adsorption Mechanism of Ciprofloxacin in Wastewater by Modified Fly Ash under the Coexistence of Copper

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: unknown, P. 114336 - 114336

Published: Oct. 1, 2024

Language: Английский

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Heavy Metal Contamination Assessment and Source Attribution in the Vicinity of an Iron Slag Pile in Hechi, China: Integrating Multi-Medium Analysis

Environmental Research, Journal Year: 2024, Volume and Issue: 263, P. 120206 - 120206

Published: Oct. 21, 2024

Language: Английский

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Water retention property and microscopic mechanism of shallow soil in inner dump improved by fly ash and polyacrylamide

Environmental Monitoring and Assessment, Journal Year: 2024, Volume and Issue: 196(8)

Published: July 31, 2024

Language: Английский

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Co-application of phytoremediation with iron-loaded biochar in petroleum and zinc co-contaminated soil

Environmental Research, Journal Year: 2024, Volume and Issue: unknown, P. 120037 - 120037

Published: Sept. 1, 2024

Language: Английский

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