Chromium and Lead adsorption by avocado seed biomass study through the use of Total Reflection X-Ray Fluorescence analysis

Boeykens, Susana; Redondo, Nicolás; Obeso, R. Alvarado; Caracciolo, Néstor; Vázquez, Cristina

doi:10.1016/j.apradiso.2019.108809

Cited by 37 publications

(10 citation statements)

References 19 publications

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“…The adsorption capacity increased from 2 mg/g to 35 mg/g (MACF), 38 mg/g (MACA), and 39 mg/g (MACB) as the initial concentration of Cr(VI) was increased. Similar observations were made elsewhere (Boeykens et al, 2019; Mangwandi, Kurniawan, & Albadarin, 2020; Ullah et al, 2013).…”

Section: Resultssupporting

confidence: 87%

“…The increase in surface area values after treatment of MAC corroborated the effect of the activating reagent in removing specific chemical components of MAC or their modification. These values were comparable to those listed in Table 1; for instance, Boeykens, Redondo, Obeso, Caracciolo, and Vázquez (2019) reported the BET surface area values of 0.081 and 0.1276 m 2 /g for natural and H 3 PO 4 ‐treated biomass, respectively. Also, the BET surface areas for untreated and treated sawdust were 0.49 and 0.39 m 2 /g, respectively (Šillerová et al, 2013).…”

Section: Resultssupporting

confidence: 81%

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A comparative study of acid‐treated, base‐treated, and Fenton‐like reagent‐treated biomass for Cr(VI) sequestration from aqueous solutions

Nchoe

Ntuli

Klink

et al. 2020

Water Environment Research

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A wide variety of biomass materials have been used for the removal of toxic chromium(VI) by biosorption. The current study investigated the efficacy of Macadamia nutshells treated with sodium hydroxide, nitric acid, and the Fenton‐like reagent in the removal of Cr(VI). The adsorbents were characterized by FTIR, SEM, TGA, and elemental analysis. Effects of functional parameters influencing the adsorption of Cr(VI), solution pH (pH 1–11), contact time (5–250 min), concentration of adsorbent (1–10 g/L), and adsorbate concentration (10–200 mg/L) were investigated. The optimum conditions for biosorption were pH 1.4, adsorbent dose of 5 g/L, and 160 min of contact time. In all cases, the base‐treated adsorbent displayed superior performance compared to others, with highest percent removal of 98%. The adsorbate–adsorbent interactions were better explained by the Freundlich isotherm and the pseudo‐first‐order rate model. The Macadamia‐based adsorbents are potentially useful for Cr(VI) removal from aqueous solutions. Practitioner points Three different chemical activators were investigated for the modification of Macadamia surface. The base‐treated material exhibited the highest specific surface area of 12.1 m2/g. The Cr(VI) adsorption performance for the base‐treated material dwarfed the other materials. Excellent Cr(VI) removal efficiency in the presence of competitors was achieved.

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Section: Resultssupporting

confidence: 87%

Section: Resultssupporting

confidence: 81%

A comparative study of acid‐treated, base‐treated, and Fenton‐like reagent‐treated biomass for Cr(VI) sequestration from aqueous solutions

Nchoe

Ntuli

Klink

et al. 2020

Water Environment Research

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“…The lemon, orange, watermelon, melon, pineapple, and banana rinds (30 g fruit rind for each fruit) were chemically activated with ZnCl 2 (90 g ZnCl 2 ), to increase the adsorption efficiency. The fruit rinds were mixed with ZnCl 2 , at a ZnCl 2 /starting material weight ratio of 3:1 (90 g ZnCl 2 /30 g fruit rind), in a magnetic stirrer (at 500 rpm stirring speed), at 75 °C for 2 h. Activated fruit rinds were washed with distilled water until a pH of 5 was reached, and then dried at 105 °C for 18 h (Kumar & Jena 2015;Boeykens et al 2019;Thompson et al 2020).…”

Section: Chemical Activation Of Biosorbentmentioning

confidence: 99%

Zinc adsorption from aqueous solution using lemon, orange, watermelon, melon, pineapple, and banana rinds

Yılmaz

Tuğrul

2021

Water Practice and Technology

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In this study, six fruit rind, chemical activated using ZnCl2 and carbonized by microwave, were used as biosorbent to remove zinc from aqueous solution. Fruit kind, microwave treatment time and adsorption contact time effects on zinc biosorption yield were examined. The characterization of raw materials and synthesized biosorbents were realized by Fourier-transform infrared spectroscopy (FT-IR). The dried fruits rinds were activated for 2 or 4 h using ZnCl2 and carbonized for 1, 2, 3 or 4 min at 800 W microwave power. Zinc biosorption yield was determined using ultraviolet-visible spectroscopy (UV-Vis). Maximum zinc biosorption capability was determined 39.18 mg/g for lemon, 35.78 mg/g for orange, 14.76 mg/g for watermelon, 13.06 mg/g for melon, 12.2 mg/g for pineapple and 9 mg/g for banana rinds. The results indicate that the six fruits rinds can be used for zinc adsorption from aqueous solution as cost-effective and environmentally friendly biosorbent with high adsorption efficiency.

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“…A lot of work has been done on the adsorption of lead and chromium ions on activated carbons; these materials have shown their effectiveness against these heavy metals. However, the majority of work has focused on batch single-component adsorption [6,[14][15][16][17]. Hence, this study focuses on dynamic adsorption in order to use the prepared materials in continuous mode in filters and straws intended for water purification.…”

Section: Introductionmentioning

confidence: 99%

Tailoring Activated Carbon Properties for Pb(II) and Cr(VI) Removal from Water in Continuous Mode

et al. 2022

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Dynamic adsorption of Cr(VI) and Pb(II) in single and binary mixture solutions at different pH values (2 and 6) was studied on activated carbons obtained by chemical activation of olive stones with different agents. The activated carbons exhibited large surface areas with diverse pore size distributions and surface chemistry. The adsorption tests, performed in continuous mode, revealed the existence of different adsorption sites for Pb(II) and Cr(VI). Besides, they emphasized the significant role of the pH, both of the medium and of the carbon surface, in the adsorption of Cr(VI). That is, an acidic medium favors the retention of Cr(VI) on activated carbon having a surface pH around 2 whereas an activated carbon with a more neutral surface shows high efficiency for binary mixtures at high contaminant concentrations for solulions at pH 6.

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Chromium and Lead adsorption by avocado seed biomass study through the use of Total Reflection X-Ray Fluorescence analysis

Cited by 37 publications

References 19 publications

A comparative study of acid‐treated, base‐treated, and Fenton‐like reagent‐treated biomass for Cr(VI) sequestration from aqueous solutions

A comparative study of acid‐treated, base‐treated, and Fenton‐like reagent‐treated biomass for Cr(VI) sequestration from aqueous solutions

Zinc adsorption from aqueous solution using lemon, orange, watermelon, melon, pineapple, and banana rinds

Tailoring Activated Carbon Properties for Pb(II) and Cr(VI) Removal from Water in Continuous Mode

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