Low temperature–produced and VFA–coated biochar enhances phenanthrene adsorption and mitigates toxicity in marine sediments

Bianco, Francesco; Marcińczyk, Marta; Race, Marco; Papirio, Stefano; Esposito, Giovanni; Oleszczuk, Patryk

doi:10.1016/j.seppur.2022.121414

Cited by 16 publications

(2 citation statements)

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“…Adsorption is the main removal mechanism for contaminants in the presence biochar (Li and Shi 2022;Tang et al 2022). Moreover, various adsorption kinetic (e.g., pseudo-first-order and pseudo-second-order) and isotherm models (e.g., Langmuir and Freundlich) are used to describe the adsorption process of contaminants onto the biochar or NPs@BC (Bianco et al 2022;Xu et al 2022). Here, the summary of reports about the adsorption characteristic of NPs@BC for contaminants is also listed in Additional file 1: Table S3.…”

Section: Removal Mechanismsmentioning

confidence: 99%

Synthesis, characterization, safety design, and application of NPs@BC for contaminated soil remediation and sustainable agriculture

Zheng

Ouyang

Zhou

2023

Biochar

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Biochar (BC) and nanoparticle-decorated biochar (NPs@BC) have emerged as potential high-performance function materials to facilitate simultaneous soil remediation and agricultural production. Therefore, there is an urgent need to incorporate environmental sustainability and human health targets into BC and NPs@BC selection and design processes. In contrast to extensive research on the preparation, modification, and environmental application of BC to soil ecosystems, reports about the adapted framework and material selection strategy of NPs@BC under environmental and human health considerations are still limited. Nevertheless, few studies systematically explored the impact of NPs@BC on soil ecosystems, including soil biota, geochemical properties, and nutrient cycles, which are critical for large-scale utilization as a multifunctional product. The main objective of this systematic literature review is to show the high degrees of contaminant removal for different heavy metals and organic pollutants, and to quantify the economic, environmental, and toxicological outcomes of NPs@BC in the context of sustainable agriculture. To address this need, in this review, we summarized synthesis techniques and characterization, and highlighted a linkage between the evolution of NPs@BC properties with the framework for sustainable NPs@BC selection and design based on environmental effects, hazards, and economic considerations. Then, research advances in contaminant remediation for heavy metals and organic pollutants of NPs@BC are minutely discussed. Eventually, NPs@BC positively acts on sustainable agriculture, which is declared. In the meantime, evaluating from the perspective of plant growth, soil characterizations as well as carbon and nitrogen cycle was conducted, which is critical for comprehending the NPs@BC environmental sustainability. Our work may develop a potential framework that can inform decision-making for the use of NPs@BC to facilitate promising environmental applications and prevent unintended consequences, and is expected to guide and boost the development of highly efficient NPs@BC for sustainable agriculture and environmental applications. Graphical Abstract

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Section: Removal Mechanismsmentioning

confidence: 99%

Synthesis, characterization, safety design, and application of NPs@BC for contaminated soil remediation and sustainable agriculture

Zheng

Ouyang

Zhou

2023

Biochar

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“…These include metal-organic frameworks (MOFs) [32,33], nanofibers composed of multivalent metals [34,35], and chemically modified biochars using acid compounds, basic compounds, polymers, and metals [36,37]. However, the utilization of these materials, as well as the chemical modification techniques of biochar, can significantly impact the production costs of the adsorbents [38], making it challenging to implement large-scale biochar usage in developing countries, as these costs represent a determining factor in the practical application of these materials [39]. Therefore, further research is needed to explore alternative precursor materials and optimize the parameters for biochar production.…”

Section: Introductionmentioning

confidence: 99%

Fluoride Removal from Aqueous Medium Using Biochar Produced from Coffee Ground

et al. 2023

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Low concentrations of fluoride (F−) in drinking water are beneficial for oral health, but the natural occurrence of high F- content has been reported in various groundwater sources, posing a continuous ingestion threat to humans. The utilization of biochar (BC) produced from residual biomass has emerged as a technically, economically, and environmentally sustainable alternative for fluoride removal through adsorption. Therefore, this study aimed to investigate the physicochemical characteristics of BC derived from coffee grounds and the influence of various factors on the adsorption process of F- in aqueous media, including pH, adsorbent dosage, contact time, temperature, and initial F- concentration. The BC exhibited a surface area of 12.94 m2·g−1 and a pore volume of 0.0349 cm3·g−1. The adsorption process was strongly pH dependent, demonstrating a significant decline in performance as pH increased from 2.0 onwards. The majority of F- removal occurred within the first 5 min, reaching adsorption equilibrium after 1 h of testing, regardless of the initial F- concentration employed. The data fitting to the Webber–Morris model indicated a two-step adsorption process on BC, with the first step being external surface sorption and the second step being intra-articular diffusion. The process was determined to be endergonic, and the data satisfactorily matched both the Freundlich and Langmuir models, with a qm of 0.53 mg·L−1 (T = 55 °C), indicating the predominance of physisorption. The findings suggest the potential of coffee grounds for BC production; nevertheless, surface structure modifications are necessary to enhance F− affinity and subsequently improve adsorption capacity.

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Low-temperature thermal-enhanced anoxic biodegradation of polycyclic aromatic hydrocarbons in aged subsurface soil

Gou

Song²,

Yang³

et al. 2023

Chemical Engineering Journal

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Low temperature–produced and VFA–coated biochar enhances phenanthrene adsorption and mitigates toxicity in marine sediments

Cited by 16 publications

References 100 publications

Synthesis, characterization, safety design, and application of NPs@BC for contaminated soil remediation and sustainable agriculture

Synthesis, characterization, safety design, and application of NPs@BC for contaminated soil remediation and sustainable agriculture

Fluoride Removal from Aqueous Medium Using Biochar Produced from Coffee Ground

Low-temperature thermal-enhanced anoxic biodegradation of polycyclic aromatic hydrocarbons in aged subsurface soil

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