Performance of biochar-based filtration bed for the removal of Cr(VI) from pre-treated synthetic tannery wastewater

Deepa, Arukula; Prakash, Prem; Mishra, Brijesh Kumar

doi:10.1080/09593330.2019.1626912

Cited by 9 publications

(3 citation statements)

References 49 publications

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“…Furthermore, BC has the large specific surface area, rich in porous structures, and many surface functional groups on it, the introduction of BC to the biofiltration system can effectively enhance the removal rate of contaminants eliminate through different mechanisms. Deepa et al (2019) chose BC as principal materials for biofilter bed medium to remove Cr(VI), and the maximum removal rate of Cr(VI)reached 99.99%. The hydroxyl, carboxyl, and carbonyl groups of BC can participate in the removal of Cr(VI) by releasing negatively charged ions such as carbonates and hydroxides, which can precipitate heavy metal ions.…”

Section: Biochar-based Biofiltersmentioning

confidence: 99%

Review of organic and inorganic pollutants removal by biochar and biochar-based composites

Liang

Tan

et al. 2021

Biochar

459

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Biochar (BC) has exhibited a great potential to remove water contaminants due to its wide availability of raw materials, high surface area, developed pore structure, and low cost. However, the application of BC for water remediation has many limitations. Driven by the intense desire of overcoming unfavorable factors, a growing number of researchers have carried out to produce BC-based composite materials, which not only improved the physicochemical properties of BC, but also obtained a new composite material which combined the advantages of BC and other materials. This article reviewed previous researches on BC and BC-based composite materials, and discussed in terms of the preparation methods, the physicochemical properties, the performance of contaminant removal, and underlying adsorption mechanisms. Then the recent research progress in the removal of inorganic and organic contaminants by BC and BC-based materials was also systematically reviewed. Although BC-based composite materials have shown high performance in inorganic or organic pollutants removal, the potential risks (such as stability and biological toxicity) still need to be noticed and further study. At the end of this review, future prospects for the synthesis and application of BC and BC-based materials were proposed. This review will help the new researchers systematically understand the research progress of BC and BC-based composite materials in environmental remediation.

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Section: Biochar-based Biofiltersmentioning

confidence: 99%

Review of organic and inorganic pollutants removal by biochar and biochar-based composites

Liang

Tan

et al. 2021

Biochar

459

View full text Add to dashboard Cite

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“…This situation might indicate the formation of a micro-aerobic zone due to the release of oxygen near the vegetation roots, and the higher redox potential may suppress microbial-assisted sulfate reduction in PCW (Aguinaga et al, 2019) . The alkali formation process is directly related to sulfate reduction and the production of bicarbonate (El Qada et al, 2006;Foo and Hameed, 2011;Ji et al, 2009;Kadirvelu et al, 2004;Mariana et al, 2021) Zeolites Crystalline aluminosilicates with uniform pore structures, suitable for adsorbing heavy metals in AMD (Erdem et al, 2004;Hong et al, 2019;Motsi et al, 2009;Rios et al, 2008;Wingenfelder et al, 2005) Biochar Carbon-rich material produced from biomass pyrolysis, known for its adsorption properties and potential for contaminant removal (Chen et al, 2021b;Deepa et al, 2019;Fazal et al, 2020;Lyu et al, 2020;Wibowo et al, 2023b) Clay Minerals…”

Section: Bioremediationmentioning

confidence: 99%

Emerging Strategies for Mitigating Acid Mine Drainage Formation and Environmental Impacts: A Comprehensive Review of Recent Advances

Wibowo,

Imron,

Kurniawan

et al. 2023

Sci. Technol. Indones

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Acid mine drainage (AMD) is a significant threat to the environment due to its high acidity and metal ion content. To effectively eliminate pollutants from AMD, various approaches are necessary. This review aims to provide a comprehensive understanding of recent advances in AMD mitigation. While treatment technologies have developed to eliminate AMD, they often produce sludge as a by-product and require expensive maintenance. As a cost-effective alternative, the recovery of AMD resources can reduce toxicity and promote reuse of heavy metals and rare earth elements. This review also analyzes the challenges and prospects of AMD mitigation implementation, including current mitigation conditions and knowledge gaps. Researchers can benefit from this review by gaining insight into research progress in this area, identifying strengths and weaknesses of current AMD mitigation applications, and exploring future research directions.

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“…In particular, the use of biosorbent microalgae to remove heavy metals from contaminated soil or water is a potential bioremediation technology (Fomina &Gadd 2014, He &Chen 2014, Huang et al 2019. The surface of microalgae contains polysaccharides, proteins, and lipids, which can provide many functional groups (such as hydroxyl, carboxyl, carbonyl, and phosphodiester groups) to bind with heavy metal ions (Bharagava &Mishra 2017, Deepa et al 2019. The living and dead cells of various microalgae show considerable adsorption capacity for heavy metal ions.…”

Section: Introductionmentioning

confidence: 99%

Adsorption characteristics of Cr6+ on microalgae immobilized by different carriers

Chen

Wang

Fan

et al. 2021

Preprint

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To solve the problem of harvesting microalgae during heavy metal adsorption, six different carriers were selected in this study to compare the adsorption behavior of microalgae after immobilization. The optimal immobilized carrier-chitosan was obtained under the following conditions of chitosan: acetic acid (2:40), microalgae concentration (10 8 cells/mL), and immobilization time (18 h). The optimal adsorption conditions were as follows: temperature: 30°C, pH: 5.0, adsorption dose: 1.5 g/L, initial ion concentration: 40 mg/L. Fourier transform infrared spectroscopy analysis showed that the specific functional groups of the specific microalgae played an important role in the adsorption process. The kinetic and isothermal model data showed that the adsorption process was mainly chemical adsorption and homogeneous monolayer adsorption. Moreover, X-ray photoelectron spectroscopy analysis showed that the Cr adsorption process involves the reduction of Cr(VI) to Cr(III).

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Performance of biochar-based filtration bed for the removal of Cr(VI) from pre-treated synthetic tannery wastewater

Cited by 9 publications

References 49 publications

Review of organic and inorganic pollutants removal by biochar and biochar-based composites

Review of organic and inorganic pollutants removal by biochar and biochar-based composites

Emerging Strategies for Mitigating Acid Mine Drainage Formation and Environmental Impacts: A Comprehensive Review of Recent Advances

Adsorption characteristics of Cr6+ on microalgae immobilized by different carriers

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