Key factors to enhance soil remediation by bioelectrochemical systems (BESs): A review

Wang, Heming; Xing, Liuqing; Zhang, Huihui; Gui, Chengqun; Jin, Song; Lin, Hai; Li, Qiang; Cheng, Changkun

doi:10.1016/j.cej.2021.129600

Cited by 51 publications

(6 citation statements)

References 84 publications

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“…The efficiency of biochar treatment can also vary with soil type. Clay (OC = 2.4%, pH = 5.80) and sandy loam (OC = 0.55%, pH = 5.70) soils treated with 5% biochar derived from sugarcane (CEC 114 cmol c kg −1 , pH 8.70; surface area 59 m 2 g −1 ) had enhanced 17αethinylestradiol sorption and decreased microbial mineralization (Wang H et al, 2021). Moreover, the sandy loam soil had a notably higher adsorption efficiency for 17α-ethinylestradiol than clay, and biochar decreased the adsorption coefficient of the sandy loam soil but improved it in the clay soil .…”

Section: Efficiency Variationsmentioning

confidence: 99%

Sustainable manufacture and application of biochar to improve soil properties and remediate soil contaminated with organic impurities: a systematic review

Rizwan,

Murtaza,

Zulfiqar

et al. 2023

Front. Environ. Sci.

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Biochar production and application have become increasingly popular in the past 15 years. Biochar, derived from diverse biomass types, offers a rich carbon source created through thermal combustion. Biochar production primarily depends on pyrolysis conditions and feedstock type. This review focuses on the multifaceted aspects of biochar, encompassing hydrothermal carbonization, gasification, and pyrolysis temperatures in biochar production and its role in bioeconomy and soil remediation. Biochar has yielded valuable insights, notably in decreasing nutrient leaching, curbing greenhouse gas (GHG) emissions, reducing the bioavailability of environmental pollutants, sequestering carbon (C) in soils, and enhancing agricultural productivity. Consequently, it has emerged as a valuable commodity for the bioeconomy, which involves harnessing bioresources through bioengineering to create economically valuable products. As a marketable output, biochar finds application in energy, diverse biochar-based product manufacturing, and the agricultural sector. Thus, biochar production not only enhances soil quality but also unlocks additional revenue streams. This review underscores the critical role of feedstock selection and pyrolysis conditions in optimizing biochar production. Furthermore, it highlights biochar as a sustainable and effective tool for improving various soil types and remediating soil contamination caused by organic impurities, including persistent organic compounds and antibiotics.

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Section: Efficiency Variationsmentioning

confidence: 99%

Sustainable manufacture and application of biochar to improve soil properties and remediate soil contaminated with organic impurities: a systematic review

Rizwan,

Murtaza,

Zulfiqar

et al. 2023

Front. Environ. Sci.

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“…Fulvic acid is the main component of humus found in the environment. It can adsorb and precipitate heavy metal pollutants in water environments [32], and heavy metals can also adsorb using fulvic acid-modified materials [33]. Lalas et al [34] added fulvic acid to a mixed solution of toxic metals containing chromium and copper and found that their concentrations reduced by 60.0-97.8% and 55.1-83.3%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Treatment of Cadmium-Contaminated Water Systems Using Modified Phosphate Rock Powder: Contaminant Uptake, Adsorption Ability, and Mechanisms

Gao,

Kang,

et al. 2024

Water

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Cadmium (Cd) water pollution threatens environmental systems and human health. Adsorption is the preferred method for purifying water bodies polluted by Cd, and the development of effective adsorption materials is critical. The performance of original phosphate rock powder (PRP) as an adsorption medium for purifying water bodies polluted by Cd was compared with that of phosphate rock powder modified with fulvic acid, chitosan, MnO2, and sulfhydryl, respectively, and their appearance and adsorption properties were investigated. The surface structures of all modified powders were rougher than the original, and their functional groups were richer. The greatest Cd2+ adsorption capacity, 1.88 mg g−1, was achieved with chitosan-modified PRP (CMPRP). This was 106.59% greater than that of PRP. The capacities of fulvic acid and MnO2 were 15.38% and 4.40% greater than that of the original, respectively. When the fulvic acid-modified PRP, CMPRP, and manganese dioxide PRP reached adsorption equilibrium, the removal rates of Cd2+ were 51.86%, 93.26%, and 46.70%, respectively. Moreover, the removal rate of Cd2+ by CMPRP was 104.43% higher than that of PRP. The main Cd2+ adsorption mechanisms for the MPRPs were electrostatic interactions, ion exchange, co-precipitation, and complexation. Moreover, the processing of the phosphate rock powder was straightforward, harmless to the environment, and could be effectively used for the removal of Cd. These results show that CMPRP is promising as a new adsorption material to treat Cd-contaminated water.

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“…Fulvic acid (FA), the main component of the widely distributed HS in the environment, plays a dominant role in governing the environmental behavior of metals ( Matilainen et al, 2011 ; Morales et al, 2012 ; Qianting et al, 2022 ). In a water environment, FA can precipitate metal contaminants after adsorption, or FA-modified materials are used to adsorb contaminants ( Li et al, 2017 ; Wang H. et al, 2021 ). In the soil environment, FA can reduce the mobility of contaminants by adsorbing metal contaminants and binding to soil minerals or to promote plant growth ( Dos Santos et al, 2020 ; Peng et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, FA can act as a reducing or oxidizing agent to participate in the redox reactions of metals contaminants, thus having a significant impact on ecological restoration ( Watanabe et al, 2005 ). Based on its molecular structure properties and redox activity, FA can form a complex with nanomaterials to adsorb or passivate metal pollutants, can be used as a photosensitizer to improve photodegradation rate (PD), and can be used as a chelating agent to improve the efficiency of electrokinetic remediation (EKR; Wang H. et al, 2021 ). In bioremediation, FA can be used as an adsorbent, electronic shuttle agent, and biological accelerator to improve the speed and effect of bioremediation on metal contaminants ( Calza et al, 2014 ; Yang et al, 2018 ; Minfen et al, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Applying fulvic acid for sediment metals remediation: Mechanism, factors, and prospect

Song

Sun²,

Wang³

et al. 2023

Front. Microbiol.

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Fulvic acid (FA) has been shown to play a decisive role in controlling the environmental geochemical behavior of metals. As a green and natural microbial metabolite, FA is widely used in environmental remediation because of its good adsorption complexation and redox ability. This paper introduces the reaction mechanism and properties of FA with metals, and reviews the progress of research on the remediation of metal pollutant by FA through physicochemical remediation and bioremediation. FA can control the biotoxicity and migration ability of some metals, such as Pb, Cr, Hg, Cd, and As, through adsorption complexation and redox reactions. The concentration, molecular weight, and source are the main factors that determine the remediation ability of FA. In addition, the ambient pH, temperature, metal ion concentrations, and competing components in sediment environments have significant effects on the extent and rate of a reaction between metals and FA during the remediation process. Finally, we summarize the challenges that this promising environmental remediation tool may face. The research directions of FA in the field of metals ecological remediation are also prospected. This review can provide new ideas and directions for the research of remediation of metals contaminants in sediments.

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Key factors to enhance soil remediation by bioelectrochemical systems (BESs): A review

Cited by 51 publications

References 84 publications

Sustainable manufacture and application of biochar to improve soil properties and remediate soil contaminated with organic impurities: a systematic review

Sustainable manufacture and application of biochar to improve soil properties and remediate soil contaminated with organic impurities: a systematic review

Treatment of Cadmium-Contaminated Water Systems Using Modified Phosphate Rock Powder: Contaminant Uptake, Adsorption Ability, and Mechanisms

Applying fulvic acid for sediment metals remediation: Mechanism, factors, and prospect

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