How biochar works, and when it doesn't: A review of mechanisms controlling soil and plant responses to biochar

GCB Bioenergy, Journal Year: 2021, Volume and Issue: 13(11), P. 1731 - 1764

Published: July 27, 2021

Abstract We synthesized 20 years of research to explain the interrelated processes that determine soil and plant responses biochar. The properties biochar its effects within agricultural ecosystems largely depend on feedstock pyrolysis conditions. describe three stages reactions in soil: dissolution (1–3 weeks); reactive surface development (1–6 months); aging (beyond 6 months). As ages, it is incorporated into aggregates, protecting carbon promoting stabilization rhizodeposits microbial products. Biochar persists for hundreds thousands years. By increasing pH, porosity, water availability, biochars can create favorable conditions root functions. Biochars catalyze biotic abiotic reactions, particularly rhizosphere, increase nutrient supply uptake by plants, reduce phytotoxins, stimulate development, resilience disease environmental stressors. Meta‐analyses found that, average, P availability a factor 4.6; decrease tissue concentration heavy metals 17%–39%; build organic through negative priming 3.8% (range −21% +20%); non‐CO 2 greenhouse gas emissions from 12%–50%. show average crop yield increases 10%–42% with addition, greatest low‐nutrient P‐sorbing acidic soils (common tropics), sandy drylands due retention holding capacity. Studies report wide range diversity contexts which have been applied. Crop yields strongly if site‐specific constraints limitations are mitigated appropriate formulations. be tailored address site selection, modifying conditions, pre‐ or post‐production treatments, co‐application mineral fertilizers. demonstrate how, when used wisely, mitigates climate change supports food security circular economy.

Language: Английский

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A comprehensive review of engineered biochar: Production, characteristics, and environmental applications

Journal of Cleaner Production, Journal Year: 2020, Volume and Issue: 270, P. 122462 - 122462

Published: June 1, 2020

Language: Английский

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Review on biomass feedstocks, pyrolysis mechanism and physicochemical properties of biochar: State-of-the-art framework to speed up vision of circular bioeconomy

Journal of Cleaner Production, Journal Year: 2021, Volume and Issue: 297, P. 126645 - 126645

Published: March 9, 2021

Language: Английский

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Combined effects of biochar properties and soil conditions on plant growth: A meta-analysis

The Science of The Total Environment, Journal Year: 2020, Volume and Issue: 713, P. 136635 - 136635

Published: Jan. 15, 2020

Language: Английский

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Biochar as an Eco-Friendly and Economical Adsorbent for the Removal of Colorants (Dyes) from Aqueous Environment: A Review

Water, Journal Year: 2020, Volume and Issue: 12(12), P. 3561 - 3561

Published: Dec. 18, 2020

Dyes (colorants) are used in many industrial applications, and effluents of several industries contain toxic dyes. exhibit toxicity to humans, aquatic organisms, the environment. Therefore, dyes containing wastewater must be properly treated before discharging surrounding water bodies. Among treatment technologies, adsorption is most preferred technique sequester from Many studies have reported removal using biochar produced different biomass, e.g., algae plant forest, domestic residues, animal waste, sewage sludge, etc. The aim this review provide an overview application as eco-friendly economical adsorbent remove colorants (dyes) aqueous This highlights routes production, such hydrothermal carbonization, pyrolysis, liquefaction. Biochar possesses numerous advantages, being eco-friendly, low-cost, easy use; various precursors available abundance converted into biochar, it also has recyclability potential higher capacity than other conventional adsorbents. From literature review, clear that a vital candidate for with above 80%.

Language: Английский

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Integrating Biochar, Bacteria, and Plants for Sustainable Remediation of Soils Contaminated with Organic Pollutants

Environmental Science & Technology, Journal Year: 2022, Volume and Issue: 56(23), P. 16546 - 16566

Published: Oct. 27, 2022

The contamination of soil with organic pollutants has been accelerated by agricultural and industrial development poses a major threat to global ecosystems human health. Various chemical physical techniques have developed remediate soils contaminated pollutants, but challenges related cost, efficacy, toxic byproducts often limit their sustainability. Fortunately, phytoremediation, achieved through the use plants associated microbiomes, shown great promise for tackling environmental pollution; this technology tested both in laboratory field. Plant-microbe interactions further promote efficacy plant growth-promoting bacteria (PGPB) used assist remediation pollutants. However, efficiency microbe-assisted phytoremediation can be impeded (i) high concentrations secondary toxins, (ii) absence suitable sink these (iii) nutrient limitations, (iv) lack continued release microbial inocula, (v) shelter or porous habitats planktonic organisms. In regard, biochar affords unparalleled positive attributes that make it bacterial carrier health enhancer. We propose several barriers overcome integrating plants, PGPB, soil. Here, we explore mechanisms which PGPB soils, thereby improve analyze cost-effectiveness, feasibility, life cycle, practicality integration sustainable restoration management

Language: Английский

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Potential hazards of biochar: The negative environmental impacts of biochar applications

Journal of Hazardous Materials, Journal Year: 2021, Volume and Issue: 420, P. 126611 - 126611

Published: July 9, 2021

Language: Английский

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Potential role of biochar in advanced oxidation processes: A sustainable approach

Chemical Engineering Journal, Journal Year: 2020, Volume and Issue: 405, P. 126582 - 126582

Published: Aug. 9, 2020

Language: Английский

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Critical Impact of Nitrogen Vacancies in Nonradical Carbocatalysis on Nitrogen-Doped Graphitic Biochar

Environmental Science & Technology, Journal Year: 2021, Volume and Issue: 55(10), P. 7004 - 7014

Published: April 29, 2021

Nitrogen-doped graphitic biochar (NBC) has boosted the development of nonradical peroxymonosulfate (PMS) activation in environmental remediation. However, specific role nitrogen species played NBC-based carbocatalysis remains vaguely interpreted. To pinpoint critical speciation, a sophisticated thermo-mechanochemical manipulation was exploited to prepare series NBCs with similar dimensional structures and oxygen levels but different (i.e., dopants vacancies). Different from conventional perspectives, found be preferably determined by vacancies more than their parent dopants. Raman depth analysis evidenced that complete transformation into could achieved at 800 °C, where an excellent abatement 4-chlorophenol (4-CH, 90.9% removal) for NBC800 low PMS consumption (1.24 mM). According adsorption experiments, exhibited highest affinity toward molecules compared dopants, which accounted superior carbocatalysis. Electron paramagnetic resonance spectroscopic analyses indicated original were bound positively charged vacancies, robust metastable complex (*HSO5–) evolved subsequently via hydrogen abstraction adjacent persistent free radicals. In situ techniques adopted estimate level associated polarization electron distribution. The flexible feature practical prospects vacancy-based also observed remediation simulated phenolic industrial wastewater. Overall, this study unravels dilemma current advances our understanding doping technology next-generation design.

Language: Английский

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The effects of biochar and its applications in the microbial remediation of contaminated soil: A review

Journal of Hazardous Materials, Journal Year: 2022, Volume and Issue: 438, P. 129557 - 129557

Published: July 9, 2022

Language: Английский

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