A review on magnetic biochar for the removal of heavy metals from contaminated soils: Preparation, application, and microbial response

Journal of Hazardous Materials Advances, Journal Year: 2023, Volume and Issue: 10, P. 100254 - 100254

Published: Feb. 11, 2023

Magnetic biochar has recently received much attention due to its magnetic separation capabilities. Additionally, makes an excellent soil amendment, making it increasingly appealing choice for the remediation of heavy metals in contaminated soils. However, explanation raw ingredients and procedures synthesizing lacks a complete analysis review biochar's influence factors, mechanism, microbial response remove from soil. Here, we provide detailed summary processing techniques needed make biochar. Generally, can be made same materials as with precursors. biochars produced several techniques, including ball milling, co-precipitation, hydrothermal carbonization, microwave pyrolysis, impregnation-pyrolysis. Then, factors influencing removal metal contamination by adsorption mechanism are described. The intrinsic properties metals, properties, feedstock, pyrolysis temperature, dosing amount significantly affected immobilization mechanisms include ion exchange, surface/co-precipitation, physical adsorption, complexation functional groups, π-π interactions, electrostatic attraction, oxidation-reduction. reaction physicochemical (pH, TOC/DOC/Biomass C, etc.) microorganisms addition were also highlighted. Finally, helpful recommendations future paths research offered, which had small positive impact on growth

Language: Английский

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Effect of iron impregnation ratio on the properties and adsorption of KOH activated biochar for removal of tetracycline and heavy metals

Bioresource Technology, Journal Year: 2023, Volume and Issue: 380, P. 129081 - 129081

Published: April 24, 2023

Language: Английский

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Nitrogen doped biochar derived from algae as persulfate activator for the degradation of tetracycline: Role of exogenous N doping and electron transfer pathway

Separation and Purification Technology, Journal Year: 2023, Volume and Issue: 318, P. 123970 - 123970

Published: May 3, 2023

Language: Английский

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Bamboo-based magnetic activated carbon for efficient removal of sulfadiazine: Application and adsorption mechanism

Chemosphere, Journal Year: 2023, Volume and Issue: 323, P. 138245 - 138245

Published: Feb. 23, 2023

Due to increasing antibiotic pollution in the water environment, green and efficient adsorbents are urgently needed solve this problem. Here we prepare magnetic bamboo-based activated carbon (MDBAC) through delignification carbonization using ZnCl2 as activator, resulting production of an with large specific surface area (1388.83 m2 g-1). The influencing factors, such solution pH, initial sulfadiazine (SD) concentration, temperature, contact time, were assessed batch adsorption experiments. Langmuir isotherm model demonstrated that MDBAC capacity on SD was 645.08 mg g-1 at its maximum, being higher than majority previously reported adsorbents. In adsorption, kinetic process closely followed pseudo-second model, thermodynamic discovered be exothermic spontaneous nature. exhibited excellent physicochemical stability, facile recovery acceptable recyclability properties. Moreover, synergistic interactions between mainly involved electrostatic forces, hydrogen bonding, π-π stacking, chelation. Within benefits low cost, ease performance, biosorbent shows promising utilization removing contaminants from wastewater.

Language: Английский

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Adsorptive removal of organic pollutants with a specific functional group from water by using metal–organic frameworks (MOFs) or MOF-derived carbons: A review

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 347, P. 127602 - 127602

Published: April 21, 2024

Language: Английский

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Self-endowed magnetic photocatalysts derived from iron-rich sludge and its recycling in photocatalytic process for tetracycline degradation

Bioresource Technology, Journal Year: 2024, Volume and Issue: 395, P. 130357 - 130357

Published: Jan. 21, 2024

Language: Английский

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Insights into kinetics, thermodynamics, and mechanisms of chemically activated sunflower stem biochar for removal of phenol and bisphenol-A from wastewater

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Feb. 21, 2024

Abstract This study synthesized a highly efficient KOH-treated sunflower stem activated carbon (KOH-SSAC) using two-step pyrolysis process and chemical activation KOH. The resulting material exhibited exceptional properties, such as high specific surface area (452 m 2 /g) excellent adsorption capacities for phenol (333.03 mg/g) bisphenol A (BPA) (365.81 mg/g). was spontaneous exothermic, benefiting from the synergistic effects of hydrogen bonding, electrostatic attraction, stacking interactions. Comparative analysis also showed that KOH-SSAC performed approximately twice well biochar (SSB), indicating its potential water treatment pollutant removal applications. suggests exploration optimization strategies to further enhance efficiency in large-scale scenarios. These findings contribute development improved materials pollution control.

Language: Английский

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A critical review on biochar for the removal of toxic pollutants from water environment

Chemosphere, Journal Year: 2024, Volume and Issue: 360, P. 142382 - 142382

Published: May 18, 2024

Language: Английский

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Activation of peroxymonosulfate by sludge-derived magnetic biochar for pollutant removal: Performance, applicability, and synergetic mechanism of iron species and carboxylated biochar

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149744 - 149744

Published: Feb. 20, 2024

Language: Английский

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Role of biochar as a greener catalyst in biofuel production: Production, activation, and potential utilization – A review

Journal of the Taiwan Institute of Chemical Engineers, Journal Year: 2024, Volume and Issue: unknown, P. 105732 - 105732

Published: Sept. 1, 2024

Language: Английский

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