Enhanced paraquat removal from contaminated water using cell-immobilized biochar

Hà, Nguyễn Thị Hải; Toan, Nguyen Chi; Kajitvichyanukul, Puangrat

doi:10.1007/s10098-020-01996-8

Cited by 30 publications

(10 citation statements)

References 40 publications

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“…Biochar-immobilized microorganisms are produced through the adsorption of microbes on biochar, entrapment with the help of crosslinking materials, or a combination of both methods. Adsorption is a simple and inexpensive method for immobilizing microorganisms [ 129 , 130 ]. Adsorbed cells colonize the biochar after being transferred from a bulk solution to its surface.…”

Section: Microbial Cell-immobilized Biochar For the Removal Of Metal ...mentioning

confidence: 99%

Effective Usage of Biochar and Microorganisms for the Removal of Heavy Metal Ions and Pesticides

et al. 2023

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The bioremediation of heavy metal ions and pesticides is both cost-effective and environmentally friendly. Microbial remediation is considered superior to conventional abiotic remediation processes, due to its cost-effectiveness, decrement of biological and chemical sludge, selectivity toward specific metal ions, and high removal efficiency in dilute effluents. Immobilization technology using biochar as a carrier is one important approach for advancing microbial remediation. This article provides an overview of biochar-based materials, including their design and production strategies, physicochemical properties, and applications as adsorbents and support for microorganisms. Microorganisms that can cope with the various heavy metal ions and/or pesticides that enter the environment are also outlined in this review. Pesticide and heavy metal bioremediation can be influenced by microbial activity, pollutant bioavailability, and environmental factors, such as pH and temperature. Furthermore, by elucidating the interaction mechanisms, this paper summarizes the microbe-mediated remediation of heavy metals and pesticides. In this review, we also compile and discuss those works focusing on the study of various bioremediation strategies utilizing biochar and microorganisms and how the immobilized bacteria on biochar contribute to the improvement of bioremediation strategies. There is also a summary of the sources and harmful effects of pesticides and heavy metals. Finally, based on the research described above, this study outlines the future scope of this field.

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Section: Microbial Cell-immobilized Biochar For the Removal Of Metal ...mentioning

confidence: 99%

Effective Usage of Biochar and Microorganisms for the Removal of Heavy Metal Ions and Pesticides

et al. 2023

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“…Biological [6,7], physical [8,9], and chemical treatments [10,11] have all been informed in the previous studies for PQ removal. Different effective adsorbents were elaborated for PQ removal such as activated carbon [12], bentonite [13], bio-based material [14][15][16], carbon nanotubes [17], calixarene [18], cellulose nanofiber [19], cyclodextrin [20,21], graphene oxide [22], kaolin [23], magnetic adsorbent [24,25], microorganisms [26], montmorillonite [27], pillararene [28], and silica [29,30].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Cationic Contaminants by Cyclodextrin Nanosponges Cross-Linked with 1,2,3,4-Butanetetracarboxylic Acid and Poly(vinyl alcohol)

2022

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Cationic organic pollutants (dyes and pesticides) are mainly hydrosoluble and easily contaminate water and create a serious problem for biotic and abiotic species. The elimination of these dangerous contaminants from water was accomplished by adsorption using cyclodextrin nanosponges. These nanosponges were elaborated by the cross-linking between 1,2,3,4-butanetetracarboxylic acid and β-cyclodextrin in the presence of poly (vinyl alcohol). Their physicochemical characteristics were characterized by gravimetry, acid-base titration, TGA, 13C NMR, ATR-FTIR, Raman, X-ray diffraction, and Stereomicroscopy. The BP5 nanosponges displayed 68.4% yield, 3.31 mmol/g COOH groups, 0.16 mmol/g β-CD content, 54.2% swelling, 97.0% PQ removal, 96.7% SO removal, and 98.3% MG removal for 25 mg/L of initial concentration. The pseudo-second-order model was suitable for kinetics using 180 min of contact time. Langmuir isotherm was suitable for isotherm with the maximum adsorption of 120.5, 92.6, and 64.9 mg/g for paraquat (PQ), safranin (SO), and malachite green (MG) adsorption, respectively. Finally, the reusability performance after five regeneration times reached 94.1%, 91.6%, and 94.6% for PQ, SO, and MG adsorption, respectively.

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“…A concentration of paraquat of 0.1 mg/L has been the maximum permissible concentration for drinking water [11]. Different adsorbents have been elaborated for PQ adsorption such as kaolin [12], activated carbon [13], bentonite [14], cellulose nanofiber [15], biobased material [16][17][18], cyclodextrin polymers coated on textile [19,20], and cyclodextrin nanosponges [21][22][23][24]. Methylene blue (MB) is a hydrosoluble cationic dye with the chemical structure of thiazine that is used as a dye for the textile coloration, a medication for the treatment of methemoglobinemia, a stain for chromoendoscopy or different staining procedures, an antidote to potassium cyanide poisoning, a redox indicator in analytical chemistry, and a treatment for fungal infections in aquaculture [25].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Cationic Pollutants from Water by Cotton Rope Coated with Cyclodextrin Polymers

2022

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The contamination from perilous organic compounds (pesticide and dyes) in water generates a significant problem for the environment and humans. A modified textile was prepared by a coating of anionic cyclodextrin polymer, obtained from the cross-linking between citric acid and β-cyclodextrin in the presence of poly (vinyl alcohol), on the cotton cord for cationic pollutant removal from an aqueous solution. Its physicochemical properties were also characterized by gravimetry, titration, stereomicroscopy, SEM, TGA, 13C NMR, and ATR-FTIR. The CC2 system exhibited 79.2% coating yield, 1.12 mmol/g COOH groups, 91.3% paraquat (PQ) removal, 97.0% methylene blue (MB) removal, and 98.3% crystal violet (CV) removal for 25 mg/L of initial concentration. The kinetics was fitted to the pseudo-second-order model using 6 h of contact time. The isotherm was suitable for the Langmuir isotherm with a maximum adsorption of 26.9 mg/g (PQ), 23.7 mg/g (MB), and 30.3 mg/g (CV). After 120 h of contact time in water and 5% v/v of HCI in ethanol, the weight loss was 7.5% and 5.6%, respectively. Finally, the recyclability performance reached 84.8% (PQ), 95.2% (MB), and 96.9% (CV) after five reuses.

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Enhanced paraquat removal from contaminated water using cell-immobilized biochar

Cited by 30 publications

References 40 publications

Effective Usage of Biochar and Microorganisms for the Removal of Heavy Metal Ions and Pesticides

Effective Usage of Biochar and Microorganisms for the Removal of Heavy Metal Ions and Pesticides

Adsorption of Cationic Contaminants by Cyclodextrin Nanosponges Cross-Linked with 1,2,3,4-Butanetetracarboxylic Acid and Poly(vinyl alcohol)

Adsorption of Cationic Pollutants from Water by Cotton Rope Coated with Cyclodextrin Polymers

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