Biochar-based composites for removing chlorinated organic pollutants: Applications, mechanisms, and perspectives

Environmental Science and Ecotechnology, Journal Year: 2024, Volume and Issue: 21, P. 100420 - 100420

Published: April 12, 2024

Chlorinated organic pollutants constitute a significant category of persistent due to their widespread presence in the environment, which is primarily attributed expansion agricultural and industrial activities. These are characterized by persistence, potent toxicity, capability for long-range dispersion, emphasizing importance eradication mitigate environmental pollution. While conventional methods removing chlorinated encompass advanced oxidation, catalytic bioremediation, utilization biochar has emerged as prominent green efficacious method recent years. Here we review biochar's role remediating typical organics, including polychlorinated biphenyls (PCBs), triclosan (TCS), trichloroethene (TCE), tetrachloroethylene (PCE), organochlorine pesticides (OCPs), chlorobenzenes (CBs). We focus on impact material properties adsorption mechanisms organics. This highlights use sustainable eco-friendly pollutants, especially when combined with biological or chemical strategies. Biochar facilitates electron transfer efficiency between microorganisms, promoting growth dechlorinating bacteria mitigating toxicity organics through adsorption. Furthermore, can activate processes such oxidation nano zero-valent iron, generating free radicals decompose compounds. observe broader application bioprocesses treating soil, reducing impacts. Conversely, water-based integrating proved more effective, leading superior purification results. contributes theoretical practical pollutants.

Language: Английский

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Recent advances in water remediation from toxic heavy metals using biochar as a green and efficient adsorbent: A review

Case Studies in Chemical and Environmental Engineering, Journal Year: 2023, Volume and Issue: 8, P. 100495 - 100495

Published: Sept. 22, 2023

Heavy metal pollution is a serious environmental problem that poses threat to human health and the environment. Water by toxic heavy metals major cause of this problem, it can destroy ecosystems, spread disease, make drinking water unsafe. Biochar promising green adsorbent for removing from water. It derived various biomasses, including agricultural organic wastes, has high carbon content, surface area, stability. These properties enable biochar effectively remove through cation exchange adsorption. This review summarizes recent advances in modification enhanced adsorption metals. discusses advantages, applications, challenges, prospects method. Biochar-based advanced oxidation processes (AOPs) have shown promise decomposition complexes enhancement capacity free ions industrial wastewater. The also highlights research gaps limitations remediation proposes future directions. Future should focus on developing environmentally friendly cost-effective technologies scaling up biochar-based removal applications. Scheme 1 illustrates overall summarized presentation article as graphical abstract.

Language: Английский

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Parametric influence of process conditions on thermochemical techniques for biochar production: A state-of-the-art review

Journal of the Energy Institute, Journal Year: 2024, Volume and Issue: 113, P. 101559 - 101559

Published: Feb. 7, 2024

Biochar refers to the carbonaceous black solid residue product obtained from thermochemical decomposition of waste biomass typically under oxygen-limited environment. There are many methods for biochar production streams, prominent pyrolysis, torrefaction, and hydrothermal carbonization. However, yield properties depend mainly on process parameters, such as temperature, residence time, heating rate, gas environment, feedstock types, among others. This review provides current state-of-art in by assessing parametric influence conditions yields, properties, compositions across carbonization their variants. Furthermore, compares contrasts different techniques with respect mass energy at similar conditions. It was found that irrespective techniques, operating typically, 150–300 °C hydrothermal, 200–300 300–600 remain most influential parameter compositions. While char yields comparable various conversion they had strong effect properties. Woody crop residues dominant feedstocks studied due attractive bioenergy (volatile matter >80% ash content <15%). Lastly, slow pyrolysis is optimized technique a typical 25–50 wt%, carbon 30–70 wt% calorific value 10–30 MJ/kg 450 lignocellulosic biomass. Other critical findings have been summarised, perspectives future research were provided. Overall, assessment can serve directive tool selecting an ideal technology high quality production.

Language: Английский

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Biochar as green adsorbents for pharmaceutical pollution in aquatic environments: A review

Desalination, Journal Year: 2024, Volume and Issue: 583, P. 117725 - 117725

Published: May 10, 2024

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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A comprehensive investigation of green solutions for sustainable wastewater remediation: A review

Journal of Molecular Liquids, Journal Year: 2024, Volume and Issue: 400, P. 124532 - 124532

Published: March 22, 2024

Language: Английский

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A review of the conversion of wood biomass into high-performance bulk biochar: Pretreatment, modification, characterization, and wastewater application

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: unknown, P. 131448 - 131448

Published: Jan. 1, 2025

Language: Английский

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An overview of biochar production techniques and application in iron and steel industries

Bioresources and Bioprocessing, Journal Year: 2024, Volume and Issue: 11(1)

Published: July 3, 2024

Abstract Integrating innovation and environmental responsibility has become important in pursuing sustainable industrial practices the contemporary world. These twin imperatives have stimulated research into developing methods that optimize processes, enhancing efficiency effectiveness while mitigating undesirable ecological impacts. This objective is exemplified by emergence of biochar derived from thermo-chemical transformation biomass. review examines production their potential applications across various aspects iron steel industries (ISI). The technical, economic, implications integrating ISI were explored. Slow pyrolysis hydrothermal carbonization are most efficient for higher yield (25–90%). Biochar several advantages- heating value (30–32 MJ/kg), more porosity (58.22%), significantly larger surface area (113 m 2 /g) compared to coal coke. However, presence often reduces fluidity a coal-biochar mixture. findings highlighted implementation come with costs, primarily due expense substitute fuels traditional fossil fuels. economic viability societal desirability highly uncertain vary based on factors such as location, feedstock type, scale, pricing, among others. Furthermore, biomass supply chain another factor which determines its large scale implementation. Despite these challenges, there opportunities reduce emissions BF-BOF operations utilizing technologies. Overall, present study explored diverse aiming contribute ongoing manufacturing practices, underscoring significance shaping environmentally conscious future.

Language: Английский

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Elimination of indigo carmine in water by Pinus patula biochar: Adsorption process optimization, kinetics and isotherms

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(3), P. 112425 - 112425

Published: March 11, 2024

Language: Английский

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Enhanced removal of ammonium nitrogen from aqueous solutions using a novel biochar derived from millet shells through both static adsorption and dynamic column experiments

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 58, P. 104848 - 104848

Published: Jan. 25, 2024

Language: Английский

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