Environmental behavior of per- and polyfluoroalkyl substances (PFASs) and the potential role of biochar for its remediation: a review

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

Published: Jan. 17, 2025

Abstract Per- and polyfluoroalkyl substances (PFASs), commonly known as ‘‘forever chemicals’’, are persistent organic pollutants that widely distributed in the environment. Due to their toxicity resistance degradation, PFASs classified emerging contaminants, increasing attention is being paid remediation. Biochar, an environmentally friendly cost-effective adsorbent, shows potential for remediating contamination. The application of biochar remediation has garnered growing interest. Compared other adsorbents, more economical raw materials its preparation readily available. However, there currently no comprehensive review summarizing effects on environmental behavior PFASs. This aims fill gap by providing in-depth discussion synthesis existing literature this area. It focuses PFASs, specifically addressing adsorption mechanisms factors influencing effectiveness A proposed mechanism which photodegrades through generation free radicals, addition conventional (such pore filling, hydrogen bonding, hydrophobic interactions, electrostatic interactions), explored. Furthermore, discusses ability reduce likelihood entering food chain water soil evaluates feasibility limitations using removal. Finally, we identify future research directions support safe effective use remediation, so promote advancement green technologies. Graphic

Language: Английский

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A compact spectroscopic analyzer for simultaneous measurement of N2O, CH4, and CO2 fluxes from soils

Agricultural and Forest Meteorology, Journal Year: 2025, Volume and Issue: 365, P. 110460 - 110460

Published: Feb. 26, 2025

Language: Английский

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Machine learning for persistent free radicals in biochar: dual prediction of contents and types using regression and classification models

Carbon Research, Journal Year: 2024, Volume and Issue: 3(1)

Published: April 22, 2024

Abstract Persistent free radicals (PFRs) are emerging substances with diverse impacts in biochar applications, necessitating accurate prediction of their content and types prior to optimal use minimal adverse effects. This task is challenging due the nonlinearity intricate variable relationships biochar. Herein, we employed data-driven techniques compile a dataset from peer-reviewed publications, aiming systematically predict PFRs by developing supervised machine learning models. Notably, extreme gradient boosting (XGBoost) model exhibited best predictive performance for both regression classification tasks predicting PFRs, achieving test R 2 value 0.95 PFR prediction, along an Area Under Receiver Operating Curve (AUROC) 0.92 type respectively. Based on XGBoost model, graphical user interface (GUI) was developed access predictions. Analysis feature importance revealed that properties, such as metal/non-metal doping, pyrolysis temperature, carbon content, specific surface area were identified four most significant factors influencing contents. Regarding biochar, area, feedstock top-ranked factors. These findings provide valuable guidance accurately contents also hold potential highly efficient utilization across various applications. Graphical

Language: Английский

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Comparative investigation of powder and extract of biochar from Broussonetia papyrifera on the growth and eco-physiological attributes of Vigna radiata

Carbon Research, Journal Year: 2024, Volume and Issue: 3(1)

Published: April 6, 2024

Abstract This study compared the impact of biochar (in powder and extract forms) derived from invasive tree Broussonetia papyrifera on growth eco-physiological responses Vigna radiata (mung bean) under laboratory experimental dome environments. The primary objective was to investigate sustainable utilization potential plants. Powdered mixed into garden soil at amendment rates 0.5%, 1%, 2%, 4%, while for treatments, seedlings were irrigated with extracts these concentrations. plants found be dependent concentration type treatment (i.e., or extract) used. highest levels observed a 1% 2% powdered biochar. In addition, impacts more pronounced in roots than shoots. resulted 7‒73% increase root length 12‒148% plant dry biomass when control. Crop growth, water use efficiency, leaf area greater biochar, but net photosynthesis (Pn), transpiration rate, stomatal conductance higher treated extract. Adding increases its pH, electrical conductivity (EC), moisture content, organic C, amounts available N, P, K; however, effects applying less pronounced. positively correlated, regardless form Following treatment, EC negatively correlated Pn. revealed that had superior improvement However, also comparable can beneficial short-term cropping systems such as urban farming (e.g., kitchen gardens vegetable production) lower concentrations (up 2%). findings provide baseline future evaluations regarding application liquor (water source nutrients residual material adsorbing environmental contaminants improving quality.

Language: Английский

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Improved activity and stability of noble metal-free oxygen reduction reaction electrocatalysts

Science China Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 25, 2024

Language: Английский

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Use of biochar derived from Spartina alterniflora to reduce sediment methane (CH4) production potential during non-farming period in earthen aquaculture ponds

Environmental Pollution, Journal Year: 2024, Volume and Issue: unknown, P. 125575 - 125575

Published: Dec. 1, 2024

Language: Английский

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