Improved Cr (VI) adsorption performance in wastewater and groundwater by synthesized magnetic adsorbent derived from Fe3O4 loaded corn straw biochar

Hiền, Chu Thị Thu; MinhViet, Nguyen

doi:10.1016/j.envres.2022.114764

Cited by 30 publications

(3 citation statements)

References 27 publications

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“… Mango kernel activated carbon Carbonization and H 3 PO 4 activation 7.1 Pseudo-second order Langmuir [ 52 ] 3. Magnetic corn straw biochar Co-precipitation 138.8 Pseudo-second order Langmuir [ 2 ] 4. Magnetic wood biochar Co-precipitation 78.7 Pseudo-second order Langmuir [ 53 ] 5.…”

Section: Resultsmentioning

confidence: 99%

“…Chromium element is found in two forms that are trivalent Cr(III) and hexavalent chromium Cr(VI) with very different properties. Trivalent chromium, Cr(III) in the aqueous solution exists as cationic form that is useful for maintaining the glucose concentration in human body [ 1 ] while Cr(VI) is found as anionic with high toxicity [ 2 ]. Therefore, the environmental contamination by Cr(VI) anion has become a major concern in around the world.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Efficient removal of Cr(VI) contaminant using recoverable silica from volcanic ash as natural adsorbent: Synthesis and activity in the mechanism and kinetic adsorption

Alharissa,

Efhiliana,

Roto

et al. 2024

Heliyon

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficient removal of Cr(VI) contaminant using recoverable silica from volcanic ash as natural adsorbent: Synthesis and activity in the mechanism and kinetic adsorption

Alharissa,

Efhiliana,

Roto

et al. 2024

Heliyon

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“…Ion exchange, surface complexation, electrostatic interactions, precipitation, and π-π interaction mechanisms are some main processes during cation adsorption. According to Chu and Nguyen (2023), the adsorption of hexavalent chromium onto magnetic biochar involves ion exchange, surface complexation, and redox reactions. Consequently, the sorption mechanism mentioned above is possible following the involvement of the biochar's carboxyl, hydroxy, and carbonyl groups.…”

Section: Biocharmentioning

confidence: 99%

Methods to prepare biosorbents and magnetic sorbents for water treatment: a review

et al. 2023

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Access to drinkable water is becoming more and more challenging due to worldwide pollution and the cost of water treatments. Water and wastewater treatment by adsorption on solid materials is usually cheap and effective in removing contaminants, yet classical adsorbents are not sustainable because they are derived from fossil fuels, and they can induce secondary pollution. Therefore, biological sorbents made of modern biomass are increasingly studied as promising alternatives. Indeed, such biosorbents utilize biological waste that would otherwise pollute water systems, and they promote the circular economy. Here we review biosorbents, magnetic sorbents, and other cost-effective sorbents with emphasis on preparation methods, adsorbents types, adsorption mechanisms, and regeneration of spent adsorbents. Biosorbents are prepared from a wide range of materials, including wood, bacteria, algae, herbaceous materials, agricultural waste, and animal waste. Commonly removed contaminants comprise dyes, heavy metals, radionuclides, pharmaceuticals, and personal care products. Preparation methods include coprecipitation, thermal decomposition, microwave irradiation, chemical reduction, micro-emulsion, and arc discharge. Adsorbents can be classified into activated carbon, biochar, lignocellulosic waste, clays, zeolites, peat, and humic soils. We detail adsorption isotherms and kinetics. Regeneration methods comprise thermal and chemical regeneration and supercritical fluid desorption. We also discuss exhausted adsorbent management and disposal. We found that agro-waste biosorbents can remove up to 68–100% of dyes, while wooden, herbaceous, bacterial, and marine-based biosorbents can remove up to 55–99% of heavy metals. Animal waste-based biosorbents can remove 1–99% of heavy metals. The average removal efficiency of modified biosorbents is around 90–95%, but some treatments, such as cross-linked beads, may negatively affect their efficiency.

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Synthesis and application of a compound microbial inoculant for effective soil remediation

Zhao,

Wang,

Wang

2023

Environ Sci Pollut Res

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Improved Cr (VI) adsorption performance in wastewater and groundwater by synthesized magnetic adsorbent derived from Fe3O4 loaded corn straw biochar

Cited by 30 publications

References 27 publications

Efficient removal of Cr(VI) contaminant using recoverable silica from volcanic ash as natural adsorbent: Synthesis and activity in the mechanism and kinetic adsorption

Efficient removal of Cr(VI) contaminant using recoverable silica from volcanic ash as natural adsorbent: Synthesis and activity in the mechanism and kinetic adsorption

Methods to prepare biosorbents and magnetic sorbents for water treatment: a review

Synthesis and application of a compound microbial inoculant for effective soil remediation

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