Study of biochar impregnated with Al recovered from water sludge for phosphate adsorption/desorption

Truong, Tuan Van; Kim, Young‐Jin; Kim, Dong-Jin

doi:10.1016/j.jclepro.2022.135507

Cited by 21 publications

(4 citation statements)

References 38 publications

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“…It showed that all biochars had similar peaks. In the FTIR spectra of all biochars, the obvious absorption bands between the wavenumbers of 3445 and 3452 cm −1 were due to the O−H stretching [36,37]. The absorption bands at the wavenumbers of 1630 cm −1 were mainly contributed by the C=C/C=O stretching [34,38].…”

Section: Ftirmentioning

confidence: 96%

Phosphogypsum-Modified Vinasse Shell Biochar as a Novel Low-Cost Material for High-Efficiency Fluoride Removal

Liu,

Zhang,

Mou

2023

Molecules

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In this study, vinasse shell biochar (VS) was easily modified with phosphogypsum to produce a low-cost and novel adsorbent (MVS) with excellent fluoride adsorption performance. The physicochemical features of the fabricated materials were studied in detail using SEM, EDS, BET, XRD, FTIR, and XPS techniques. The adsorption experiments demonstrated that the adsorption capacity of fluoride by MVS was greatly enhanced compared with VS, and the adsorption capacity increased with the pyrolysis temperature, dosage, and contact time. In comparison to chloride and nitrate ions, sulfate ions significantly affected adsorption capacity. The fluoride adsorption capacity increased first and then decreased with increasing pH in the range of 3–12. The fluoride adsorption could be perfectly fitted to the pseudo-second-order model. Adsorption isotherms matched Freundlich and Sips isotherm models well, giving 290.9 mg/g as the maximum adsorption capacity. Additionally, a thermodynamic analysis was indicative of spontaneous and endothermic processes. Based on characterization and experiment results, the plausible mechanism of fluoride adsorption onto MVS was proposed, mainly including electrostatic interactions, ion exchange, precipitation, and hydrogen bonds. This study showed that MVS could be used for the highly efficient removal of fluoride and was compatible with practical applications.

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Section: Ftirmentioning

confidence: 96%

Phosphogypsum-Modified Vinasse Shell Biochar as a Novel Low-Cost Material for High-Efficiency Fluoride Removal

Liu,

Zhang,

Mou

2023

Molecules

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Section: Factors Affecting Adsorption Of Nitrogen and Phosphorus By B...mentioning

confidence: 99%

“…If the goal is to remove phosphate from wastewater, more biochar is needed to obliterate it. If the adsorption of phosphorus by biochar is used as phosphate fertilizer, it is recommended to add less biochar [11]. In the process of nitrogen adsorption, Tan et al [48] reported the effects of four kinds of biochars on the phosphorus removal rate and adsorption capacity.…”

Section: Influence Of Biochar Dosagementioning

confidence: 99%

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Efficient Adsorption of Nitrogen and Phosphorus in Wastewater by Biochar

Wu,

Quan,

Chen

et al. 2024

Molecules

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Nitrogen and phosphorus play essential roles in ecosystems and organisms. However, with the development of industry and agriculture in recent years, excessive N and P have flowed into water bodies, leading to eutrophication, algal proliferation, and red tides, which are harmful to aquatic organisms. Biochar has a high specific surface area, abundant functional groups, and porous structure, which can effectively adsorb nitrogen and phosphorus in water, thus reducing environmental pollution, achieving the reusability of elements. This article provides an overview of the preparation of biochar, modification methods of biochar, advancements in the adsorption of nitrogen and phosphorus by biochar, factors influencing the adsorption of nitrogen and phosphorus in water by biochar, as well as reusability and adsorption mechanisms. Furthermore, the difficulties encountered and future research directions regarding the adsorption of nitrogen and phosphorus by biochar were proposed, providing references for the future application of biochar in nitrogen and phosphorus adsorption.

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Recovery of Phosphate From Aqueous Solution by Mg/Ca-Modified Biochar Derived From Dewatered Dry Sludge and Waste Almond Shells and Its Potential Application

Yang,

Cui,

Ning

et al. 2024

Water Air Soil Pollut

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Study of biochar impregnated with Al recovered from water sludge for phosphate adsorption/desorption

Cited by 21 publications

References 38 publications

Phosphogypsum-Modified Vinasse Shell Biochar as a Novel Low-Cost Material for High-Efficiency Fluoride Removal

Phosphogypsum-Modified Vinasse Shell Biochar as a Novel Low-Cost Material for High-Efficiency Fluoride Removal

Efficient Adsorption of Nitrogen and Phosphorus in Wastewater by Biochar

Recovery of Phosphate From Aqueous Solution by Mg/Ca-Modified Biochar Derived From Dewatered Dry Sludge and Waste Almond Shells and Its Potential Application

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