Biochar for the removal of contaminants from soil and water: a review

Biochar, Journal Year: 2022, Volume and Issue: 4(1)

Published: March 15, 2022

Abstract Biochar shows significant potential to serve as a globally applicable material remediate water and soil owing the extensive availability of feedstocks conducive physio-chemical surface characteristics. This review aims highlight biochar production technologies, characteristics biochar, latest advancements in immobilizing eliminating heavy metal ions organic pollutants water. Pyrolysis temperature, heat transfer rate, residence time, type feedstock are critical influential parameters. Biochar’s efficacy managing contaminants relies on pore size distribution, groups, ion-exchange capacity. The molecular composition physical architecture may be crucial when practically applied soil. In general, produced at relatively high pyrolysis temperatures can effectively manage via increasing area, hydrophobicity microporosity. generated lower is deemed more suitable for removing polar inorganic through oxygen-containing functional precipitation electrostatic attraction. also presents existing obstacles future research direction related biochar-based materials effluents Graphical

Language: Английский

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Recent progress in metal-based composites toward adsorptive removal of phosphate: Mechanisms, behaviors, and prospects

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 446, P. 137081 - 137081

Published: May 21, 2022

Language: Английский

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Analysis of the simultaneous adsorption mechanism of ammonium and phosphate on magnesium-modified biochar and the slow release effect of fertiliser

Biochar, Journal Year: 2022, Volume and Issue: 4(1)

Published: April 13, 2022

Abstract To decrease the eutrophication caused by nitrogen (N) and phosphorus (P) in water, magnesium-modified corn stalk biochar (MgB) was prepared under synergistic impact of multi-pyrolysis temperatures Mg 2+ contents for co-adsorption ammonium (NH 4 + -N) phosphate (PO 3− ). The mechanism, slow-release performance plant application MgB were systematically studied. results showed that pyrolysis (350–650 °C) (0–3.6 g/L) not only altered physicochemical properties biochar, but also significantly affected adsorption efficacy MgB. NH -N PO accordance with Langmuir–Freundlich pseudo-second-order kinetic models (Q max = 37.72 73.29 mg/g, respectively). Based on characteristics, kinetics isotherms results, mechanism determined found to mainly involve struvite precipitation, ion exchange, surface precipitation or electrostatic attraction. Compared leaching chemical fertilizers (CF), after (MgB-A), had a more stable pH lower conductivity. Leaching MgB-A controlled both diffusion dissolution rate Mg-P. excellent long-term abundant promoted growth Zea mays L. Lolium perenne Overall, this study suggested could realize win–win outcome biochar-based fertiliser production wastewater treatment.

Language: Английский

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Adsorption recovery of phosphorus in contaminated water by calcium modified biochar derived from spent coffee grounds

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 909, P. 168426 - 168426

Published: Nov. 7, 2023

Language: Английский

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Mechanisms of adsorption and functionalization of biochar for pesticides: A review

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 272, P. 116019 - 116019

Published: Jan. 30, 2024

Agricultural production relies heavily on pesticides. However, factors like inefficient application, pesticide resistance, and environmental conditions reduce their effective utilization in agriculture. Subsequently, pesticides transfer into the soil, adversely affecting its physicochemical properties, microbial populations, enzyme activities. Different interacting can lead to combined toxicity, posing risks non-target organisms, biodiversity, organism-environment interactions. Pesticide exposure may cause both acute chronic effects human health. Biochar, with high specific surface area porosity, offers numerous adsorption sites. Its stability, eco-friendliness, superior capabilities render it an excellent choice. As a versatile material, biochar finds use agriculture, management, industry, energy, medicine. Added helps absorb or degrade contaminated areas, enhancing soil activity. Current research primarily focuses produced via direct pyrolysis for adsorption. Studies functionalized this purpose are relatively scarce. This review examines biochar's absorption characteristics, formation mechanisms, impact, delves functionalization methods, prospects limitations.

Language: Английский

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Research status, trends, and mechanisms of biochar adsorption for wastewater treatment: a scientometric review

Environmental Sciences Europe, Journal Year: 2024, Volume and Issue: 36(1)

Published: Feb. 12, 2024

Abstract In the last decade, biochar application research has emerged as a hot topic in water treatment studies, which made adsorption one of primary wastewater strategies. This paper presents global bibliometric analysis 2673 publications from Web Science database, spanning 2011–2022. For comprehensive understanding status and trends for treatment, advanced quantitative visual tools (i.e., CiteSpace ArcGIS) were employed. The results showed that China leading country with most published articles. key area is on magnetic wastewater. articles summarized review demonstrated unequivocally can treat wide range even though mechanisms heavy metals, inorganic salts organic pollutants are not entirely consistent. further analyzes factors affecting performance adsorbing improvement measures functional characteristics, proposing future directions focusing capacity products. information synthesis discussion would provide valuable insights historical, current, research, beneficial to solve practical problems pollution improve quality environment.

Language: Английский

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The formation and adsorption mechanism studies of 3D hydrangea-like ZnFe-LDHs/FeOOH for the highly efficient removal of phosphate

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 482, P. 148410 - 148410

Published: Jan. 5, 2024

Language: Английский

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Efficient performance of magnesium oxide loaded biochar for the significant removal of Pb2+ and Cd2+ from aqueous solution

Ecotoxicology and Environmental Safety, Journal Year: 2021, Volume and Issue: 221, P. 112426 - 112426

Published: June 21, 2021

Lead (Pb) and cadmium (Cd) are considered as a typical heavy metals in aqueous solution, which may pose adverse health effects on human beings. For the removal of these two pollutants, magnesium oxide (MgO) was successfully immobilized onto eucalyptus biochar (BC) matrix via simple cost-effective pyrolysis process MgCl2-pretreated biomass under high temperature (500 °C). Synthesized MgO nanoparticles-biochar composites (MBC) exhibited superior performance for target achieve 99.9% efficiency Pb(II) Cd(II) at optimum conditions (0.02 g, pH range 4–7, reaction time 120, 240 min). Furthermore, maximum theoretical adsorbing amount MBC 829.11 mg/g 515.17 Cd(II). Pseudo-second-order model Langmuir models were well-determined isotherm adsorption kinetics. FTIR, XRD, XPS analysis revealed that precipitation ion exchange great importance contaminants. Besides, cation-π interaction complexation from carbon-containing functional groups should not be neglected. Considering advantage low-cost, facile preparation, brilliant capacity, it is anticipated has promising prospect broad application Pb(II)/Cd(II)-containing wastewater treatment.

Language: Английский

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A state-of-the-art review on producing engineered biochar from shellfish waste and its application in aquaculture wastewater treatment

Chemosphere, Journal Year: 2021, Volume and Issue: 288, P. 132559 - 132559

Published: Oct. 14, 2021

Language: Английский

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Fe-loaded biochar obtained from food waste for enhanced phosphate adsorption and its adsorption mechanism study via spectroscopic and experimental approach

Journal of environmental chemical engineering, Journal Year: 2021, Volume and Issue: 9(4), P. 105751 - 105751

Published: May 27, 2021

Language: Английский

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