The Application of Eco-Friendly Fe–Al Bimetallic Oxide/Biochar Adsorbent Composites with Waste Rice Husk for Removal of Arsenic at Low Concentration

Liu, Hui; Li, Pingping; Qiu, Fengxian; Zhang, Tao; Xu, Jicheng

doi:10.1007/s10904-021-02085-z

Cited by 9 publications

(4 citation statements)

References 42 publications

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“…An analysis of the works reviewed here, from ref. [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31] and [33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51], 66.7% of the manuscripts are generated from Asia (India, Nepal, Pakistan, Saudi Arabia, Malaysia, China, Iran, Republic of Korea, and Taiwan), 18.5% from Africa (Egypt, Nigeria, and South Africa), 7.4% from South America (Peru) and 3.7% each from North America (Canada) and Europe (Portugal) (the classification is done in the basis of the institution in which the corresponding author is located).…”

Section: Discussionmentioning

confidence: 99%

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Arsenic and Biosorption

Robla¹

2023

Arsenic in the Environment - Sources, Impacts and Remedies

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Arsenic, either in (III) or (V) oxidation states forms, is a hazardous elements to humans, thus its removal from aqueous environments is of the utmost priority in the countries where this problem arises. From the various separation technologies, the removal f arsenic via biosorption processing attracted an interest, because besides the removal of the element, allows the recycle materials that in many cases are considered as wastes. The present chapter reviewed the most recent proposals (2022 year) about the use of biosorbents in the removal of this toxic element. Arsenic, either in (III) or (V) oxidation states forms, is a hazardous elements to humans, thus its removal from aqueous environments is of the utmost priority in the countries where this problem arises. From the various separation technologies, the removal f arsenic via biosorption processing attracted an interest, because besides the removal of the element, allows the recycle materials that in many cases are considered as wastes. The present chapter reviewed the most recent proposals (2022 year) about the use of biosorbents in the removal of this toxic element.

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Section: Discussionmentioning

confidence: 99%

“…Rice husk is the precursor of an eco-friendly Fe-Al bimetallic oxide/biochar adsorbent composite used in the removal of arsenic(III) from aqueous medium [27]. Maximum adsorption is reached at pH 5.5, being the experimental adapt fitted to the Freundlich isotherm and the pseudo-first-order kinetic model.…”

Section: Arsenic(iii)mentioning

confidence: 99%

Arsenic and Biosorption

Robla¹

2023

Arsenic in the Environment - Sources, Impacts and Remedies

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“…Liu et al 2022). The strength of peaks indicates the presence of As(III) in adsorbed in the material(Liu et al 2022) (Fig.4a,c).…”

mentioning

confidence: 99%

“…Liu et al 2022). The strength of peaks indicates the presence of As(III) in adsorbed in the material(Liu et al 2022) (Fig.4a,c). The binding energy of Th/RH-BC at 163.7 eV was ascribed to the successful grafting of the thiol group and As(III) S-H bond(Fan et al 2020).…”

mentioning

confidence: 99%

Enhanced capacity of thiol-functionalized sugarcane bagasse and rice husk biochars for arsenite sorption in aqueous solutions

hasan,

Niazi,

bibi

et al. 2024

Preprint

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Utilization of biowastes to produce biochars as sorbents to remove toxic elements from water represents an important pathway for aquatic ecosystem decontamination. Here we explored the significance of thiol-functionalization on sugarcane bagasse biochar (Th/SCB-BC) and rice husk biochar (Th/RH-BC) to enhance arsenite (As(III)) removal capacity from water and compared their efficiency with pristine biochars (SCB–BC and RH–BC). The maximum As(III) sorption was found on Th/SCB-BC and Th/RH-BC (2.88 and 2.51 mg g−1, respectively) compared to the SCB–BC and RH–BC (1.51 and 1.40 mg g−1). Relatively, greater percentage As(III) removal was observed with the Th/SCB–BC and Th/RH–BC (92% and 83%, respectively) at pH 7 compared to pristine SCB–BC and RH–BC (65% and 55%). Langmuir (R2 = 0.99) isotherm and pseudo–second order (R2 = 0.99) kinetic models provided the best fits to As(III) sorption data. Desorption experiments indicated that the regeneration ability of biochars was in the order of: Th/SCB–BC (88%) > Th/RH–BC (82%) > SCB–BC (77%) > RH–BC (69%) up to three sorption-desorption cycles. The FTIR spectroscopy and XPS results demonstrated that the thiol (S–H) surface functional groups were successfully grafted on the surface of biochars and enhanced As removal from water. Spectroscopic data indicated that functional groups, such as S–H, –OH, –COOH, C=O were involved in slightly enhanced As(III) sorption on thiol-engineered biochars. This study highlights that thiol-grafting on biochars, notably on SCB-BC, enhanced their ability to remove As from water, which can be used as an effective technique for the treatment of As from drinking water.

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