Metal salt-modified biochars derived from agro-waste for effective congo red dye removal

Nguyen, Dang; Binh, Quach An; Nguyen, Xuan Cuong; Nguyen, Thi Thanh Huyen; Vo, Quang Nha; Nguyen, Trung Duong; Tran, Thi Cuc Phuong; Nguyen, Thi An Hang; Kim, Soo Young; Nguyen, Thang Phan; Bae, Jung Hoon; Kim, Il Tae; Le, Quyet Van

doi:10.1016/j.envres.2021.111492

Cited by 78 publications

(21 citation statements)

References 71 publications

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“…The table showed that WBC had the largest specific surface area and pore volume in pristine biochar, while Bi@WBC also had the largest specific surface area and pore volume among BiBC. The BET surface area of Bi@WBC in this study was higher than those of biochars reported by other studies, which were listed in Supporting Information, Table S1 51,56,57 . This is likely related to the fact that the loading of bismuth increases the specific surface area of biochar, and the larger the specific surface area of the pristine biochar, the larger the specific surface area of the bismuth‐based biochar.…”

Section: Resultscontrasting

confidence: 52%

“…The BET surface area of Bi@WBC in this study was higher than those of biochars reported by other studies, which were listed in Supporting Information, Table S1. 51,56,57 This is likely related to the fact that the loading of bismuth increases the specific surface area of biochar, and the larger the specific surface area of the pristine biochar, the larger the specific surface area of the bismuth-based biochar. The adsorption capability was intimately associated with the specific surface area and porosity, where the porous structure of biochar facilitated the pollutants being filled into the pore structure in the process of adsorption.…”

Section: Resultsmentioning

confidence: 99%

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Adsorption of methylene blue by bismuth impregnated biochar of different biomass materials: pore structure and surface chemistry characteristics

et al. 2022

J of Chemical Tech & Biotech

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In this study, three different types of biochar (biomass materials were beech wood, corncob, and bamboo) were loaded with bismuth to form bismuth impregnated biochars (named respectively as Bi@WBC, Bi@CBC, and Bi@BBC) to investigate their properties (pore structure and surface chemistry characteristics) on methylene blue (MB) removal capacities. Three bismuth impregnated biochars made from different biomass materials were ranked for their adsorption capacity of MB as follows: Bi@WBC > Bi@CBC > Bi@BBC, in which Bi@WBC showed the largest Langmuir adsorption capacity of 178.59 mg g −1 . While the specific surface area (SSA) and pore volume of Bi@WBC were the largest (accounting for 477.74 m 2 g −1 and 0.15 cm 3 g −1 , respectively), according to the FTIR and XPS results, Bi@WBC (72.3%) exhibited a higher proportion of Bi O bonds than the Bi@CBC (52.3%) and Bi@BBC (48.4%) did. Conclusively, the rich porous structure and surface functional groups of Bi@WBC affected the adsorption capacity of MB, and the chemical adsorption provided the main contribution.

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Section: Resultscontrasting

confidence: 52%

Section: Resultsmentioning

confidence: 99%

Adsorption of methylene blue by bismuth impregnated biochar of different biomass materials: pore structure and surface chemistry characteristics

et al. 2022

J of Chemical Tech & Biotech

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“…The maximum adsorption capacity of the modified BC to crude oil reached 5315 mg/g in 60 min. Nguyen et al [ 24 ] modified BC with FeCl 3 , AlCl 3 , and CaCl 2 to increase the number of surface functional groups, and the maximum chromium removal rate was 96.8%. Liu et al [ 25 ] pretreated camellia oleifera shell with aminosulfonic acid to obtain the modified BC with a larger specific surface area and more functional groups, and the maximum adsorption capacity of tetracycline reached 412.95 mg/g.…”

Section: Introductionmentioning

confidence: 99%

Study on the Enhanced Remediation of Petroleum-Contaminated Soil by Biochar/g-C3N4 Composites

Lin

Yang

Shang

et al. 2022

IJERPH

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This work developed an environmentally-friendly soil remediation method based on BC and g-C3N4, and demonstrated the technical feasibility of remediating petroleum-contaminated soil with biochar/graphite carbon nitride (BC/g-C3N4). The synthesis of BC/g-C3N4 composites was used for the removal of TPH in soil via adsorption and photocatalysis. BC, g-C3N4, and BC/g-C3N4 have been characterized by scanning electron microscopy (SEM), Brunauer–Emmett–Teller surface area analyzer (BET), FT-IR, and X-ray diffraction (XRD). BC/g-C3N4 facilitates the degradation due to reducing recombination and better electron-hole pair separation. BC, g-C3N4, and BC/g-C3N4 were tested for their adsorption and photocatalytic degradation capacities. Excellent and promising results are brought out by an apparent synergism between adsorption and photocatalysis. The optimum doping ratio of 1:3 between BC and g-C3N4 was determined by single-factor experiments. The removal rate of total petroleum hydrocarbons (TPH) by BC/g-C3N4 reached 54.5% by adding BC/g-C3N4 at a dosing rate of 0.08 g/g in a neutral soil with 10% moisture content, which was 2.12 and 1.95 times of BC and g-C3N4, respectively. The removal process of TPH by BC/g-C3N4 conformed to the pseudo-second-order kinetic model. In addition, the removal rates of different petroleum components in soil were analyzed in terms of gas chromatography–mass spectrometry (GC-MS), and the removal rates of nC13-nC35 were above 90% with the contaminated soil treated by BC/g-C3N4. The radical scavenger experiments indicated that superoxide radical played the major role in the photocatalytic degradation of TPH. This work definitely demonstrates that the BC/g-C3N4 composites have great potential for application in the remediation of organic pollutant contaminated soil.

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“…In recent years, the modification of biochar to improve the ability of nZVI to remove pollutants and expand its application value has attracted more attention. [25][26][27] In a previous study, Yi et al demonstrated that biochar with a rough and porous structure can greatly improve the dispersibility and stability of nZVI particles. 28 Zhang et al demonstrated that the prepared A-BC-NZVI can retain the original functional groups on the surface of biochar to a great extent.…”

Section: Introductionmentioning

confidence: 99%

Effective removal of Cd(ii) by sludge biochar supported nanoscale zero-valent iron from aqueous solution: characterization, adsorption properties and mechanism

Dai

Han

et al. 2022

New J. Chem.

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Metal salt-modified biochars derived from agro-waste for effective congo red dye removal

Cited by 78 publications

References 71 publications

Adsorption of methylene blue by bismuth impregnated biochar of different biomass materials: pore structure and surface chemistry characteristics

Adsorption of methylene blue by bismuth impregnated biochar of different biomass materials: pore structure and surface chemistry characteristics

Study on the Enhanced Remediation of Petroleum-Contaminated Soil by Biochar/g-C3N4 Composites

Effective removal of Cd(ii) by sludge biochar supported nanoscale zero-valent iron from aqueous solution: characterization, adsorption properties and mechanism

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