The costs and benefits of biochar production and use: A systematic review

Journal of Cleaner Production, Journal Year: 2023, Volume and Issue: 408, P. 137138 - 137138

Published: April 7, 2023

Language: Английский

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Carbon Sequestration Strategies in Soil Using Biochar: Advances, Challenges, and Opportunities

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(31), P. 11357 - 11372

Published: July 26, 2023

Biochar, a carbon (C)-rich material obtained from the thermochemical conversion of biomass under oxygen-limited environments, has been proposed as one most promising materials for C sequestration and climate mitigation in soil. The contribution biochar hinges not only on its fused aromatic structure but also abiotic biotic reactions with soil components across entire life cycle environment. For instance, minerals microorganisms can deeply participate mineralization or complexation labile (soluble easily decomposable) even recalcitrant fractions biochar, thereby profoundly affecting cycling Here we identify five key issues closely related to application review outstanding advances. Specifically, terms use pyrochar, hydrochar, stability soil, effect flux speciation changes emission nitrogen-containing greenhouse gases induced by production application, barriers are expounded. By elaborating these critical issues, discuss challenges knowledge gaps that hinder our understanding provide outlooks future research directions. We suggest combining mechanistic biochar-to-soil interactions long-term field studies, while considering influence multiple factors processes, is essential bridge gaps. Further, standards should be widely implemented, threshold values urgently developed. Also needed comprehensive prospective assessments restricted account contributions contamination remediation, quality improvement, vegetation accurately reflect total benefits

Language: Английский

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Feedstock and pyrolysis conditions affect suitability of biochar for various sustainable energy and environmental applications

Journal of Analytical and Applied Pyrolysis, Journal Year: 2023, Volume and Issue: 170, P. 105881 - 105881

Published: Jan. 25, 2023

Language: Английский

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An Overview of Climate Change Impacts on Agriculture and Their Mitigation Strategies

Agriculture, Journal Year: 2023, Volume and Issue: 13(8), P. 1508 - 1508

Published: July 27, 2023

In recent years, the adverse effect of climate change on soil properties in agricultural sector has become a dreadful reality worldwide. Climate change-induced abiotic stresses such as salinity, drought and temperature fluctuations are devastating crops’ physiological responses, productivity overall yield, which is ultimately posing serious threat to global food security agroecosystems. The applications chemical fertilizers pesticides contribute towards further deterioration rapid changes climate. Therefore, more careful, eco-friendly sustainable strategies required mitigate impact climate-induced damage sector. This paper reviews recently reported damaging impacts various crops, along with two emerging mitigation strategies, biochar biostimulants, light studies focusing combating worsening deteriorated environment yields, environment. Here, we highlighted agriculture applying an aim protecting soil,

Language: Английский

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Exploring negative emission potential of biochar to achieve carbon neutrality goal in China

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Feb. 5, 2024

Abstract Limiting global warming to within 1.5 °C might require large-scale deployment of premature negative emission technologies with potentially adverse effects on the key sustainable development goals. Biochar has been proposed as an established technology for carbon sequestration co-benefits in terms soil quality and crop yield. However, considerable uncertainties that exist potential, cost, strategies biochar systems at national level prevent its China. Here, we conduct a spatially explicit analysis investigate economics, priority sites derived from multiple feedstocks Results show potential up 0.92 billion tons CO 2 per year average net cost US$90 ton manner, which could satisfy demands most mitigation scenarios compatible China’s target neutrality by 2060.

Language: Английский

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Biochar application in remediating salt-affected soil to achieve carbon neutrality and abate climate change

Biochar, Journal Year: 2023, Volume and Issue: 5(1)

Published: July 21, 2023

Abstract Salt-affected soils urgently need to be remediated achieve the goals of carbon neutrality and food security. Limited reviews are available on biochar performance in remediating salt-affected context climate change mitigation. This work summarized two pathways during using biochars, i.e., production from sustainable feedstock thermal technologies, application for promoting plant productivity mitigating greenhouse gas (GHG) emission. Converting biomass wastes into biochars can reduce GHG emission promote dioxide removal (CDR), collection halophyte as feedstocks, development poly-generation systems with or negativity could promising strategies. Biochar effectively improve growth soils, showing that grand mean response was 29.3%, via improving physicochemical characteristics, shifting microbial communities, enhancing halotolerance. Moreover, mitigate inducing negative priming effect, soil properties, changing communities associated nitrogen cycle, direct adsorption GHG. However, also may pose effects because stress toxic compounds free radicals, deterioration properties. The promoted is mainly ascribed positive provision labile inorganic fractions substrates. Finally, this review pointed out gaps current studies future perspectives. Particularly, “carbon neutral” negative” system, balancing relationship effectiveness functionality its environmental risks costs, designing biochar-based adsorbents would important directions abate change. Graphical

Language: Английский

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Biomass residue to carbon dioxide removal: quantifying the global impact of biochar

Biochar, Journal Year: 2023, Volume and Issue: 5(1)

Published: Oct. 11, 2023

Abstract The Climate Change Conference of Parties (COP) 21 in December 2015 established Nationally Determined Contributions toward reduction greenhouse gas emissions. In the years since COP21, it has become increasingly evident that carbon dioxide removal (CDR) technologies must be deployed immediately to stabilize concentration atmospheric gases and avoid major climate change impacts. Biochar is a carbon-rich material formed by high-temperature conversion biomass under reduced oxygen conditions, its production one few CDR methods can at scale large enough counteract effects within next decade. Here we provide generalized framework for quantifying potential contribution biochar make achieving national emissions goals, assuming use only sustainably supplied biomass, i.e., residues from existing agricultural, livestock, forestry wastewater treatment operations. Our results illustrate significant role play world-wide strategies, with 6.23 ± 0.24% total GHG 155 countries covered based on 2020 data over 100-year timeframe, more than 10% 28 countries. Concentrated regions high relative were identified South America, northwestern Africa eastern Europe. Graphical abstract

Language: Английский

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Recent developments and prospects of sustainable remediation treatments for major contaminants in soil: A review

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 912, P. 168769 - 168769

Published: Nov. 25, 2023

Language: Английский

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Changes in phosphorus due to pyrolysis and in the soil-plant system amended with sewage sludge biochar compared to conventional P fertilizers: A global meta-analysis

Chemosphere, Journal Year: 2025, Volume and Issue: 371, P. 144055 - 144055

Published: Jan. 4, 2025

Language: Английский

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Evaluating the two-pool decay model for biochar carbon permanence

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

Published: Jan. 8, 2025

Abstract Accurate estimation of biochar carbon permanence is essential for assessing its effectiveness as a dioxide removal (CDR) strategy. The widely adopted framework, based on the two-pool exponential decay model, forms basis policy guidelines and national CDR accounting. However, our re-analysis meta-data used in this model reveals significant deficiencies parameterization, leading to two critical issues. First, current parameterization assigns disproportionally low percentage labile fraction (C1) relative recalcitrant (C2), effectively reducing single-pool approach. Due limited duration incubation experiments, constant incorrectly applied entire mass, resulting considerable overestimation rate. Second, analysis lack causal correlation between assigned proportions C1 C2 key carbonization parameters such production temperature hydrogen-to-carbon (H/C) ratios, suggesting that does not accurately represent underlying chemistry. This misalignment contradicts established relationship increased stability higher degree carbonization. Consequently, may adequately reflect sequestration potential biochar. While multi-pool suitable predicting biochar, primary issue with lies rather than structure. To address these limitations, we recommend future research prioritize development revised improved supported by empirical decomposition data from variety experimental methods, including studies, accelerated aging comprehensive physicochemical characterization. refined approach will improve accuracy estimations, strengthening role global management strategies.

Language: Английский

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