Biosorption of Cr(VI) using coconut fibers from agro-industrial waste magnetized using magnetite nanoparticles

Costa, Antonio Wilson Macedo Carvalho; Guerhardt, Flávio; Júnior, Silvestre Eduardo Rocha Ribeiro; Cânovas, Geovana; Vanale, Rosangela Maria; Coelho, D.; Ehrhardt, Daniela Diniz; Rosa, Jorge Marcos; BasileTambourgi, Elias; Santana, José Carlos Curvelo; Souza, Roberto Rodrigues de

doi:10.1080/09593330.2020.1752812

Cited by 16 publications

(10 citation statements)

References 41 publications

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“…In addition to biomass from microorganisms, as indicated above, a large number of materials have been evaluated as biosorbents to eliminate different pollutants, among the most recent are: agro-industrial waste materials [14], sludge [15,16], polysaccharides [17], plant-derived materials [18][19][20] and biopolymers [21]; although it is necessary to indicate that throughout the years of development of biosorption, a large number of biological materials of very diverse origin have been evaluated as possible biosorbents [22,23]. Many of these materials are considered as waste: for this reason, the use of these materials as biosorbents has a double advantage, on the one hand, a waste is used for an application, and therefore, its waste is reduced; on the other hand, this material is used to eliminate pollution with a possible low cost.…”

Section: Biosorption: Generalitiesmentioning

confidence: 99%

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Biosorption: A Review of the Latest Advances

Torres

2020

Processes

129

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Biosorption is a variant of sorption techniques in which the sorbent is a material of biological origin. This technique is considered to be low cost and environmentally friendly, and it can be used to remove pollutants from aqueous solutions. The objective of this review is to report on the most significant recent works and most recent advances that have occurred in the last couple of years (2019–2020) in the field of biosorption. Biosorption of metals and organic compounds (dyes, antibiotics and other emerging contaminants) is considered in this review. In addition, the use and possibilities of different forms of biomass (live or dead, modified or immobilized) are also considered.

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Section: Biosorption: Generalitiesmentioning

confidence: 99%

“…This means that the behavior towards biosorbents is different. In this case, the range of pHs considered optimal to carry out biosorption is 2.0-3.0 [14,26]. At low pHs, the biomass surface is highly protonated, offering a large amount of positive charges that attract chromium anions.…”

Section: Chromium (Vi)mentioning

confidence: 99%

Biosorption: A Review of the Latest Advances

Torres

2020

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129

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“…A number of works dealing with the ability of shells of various types of fruit (hazelnuts [29][30][31], almonds [30,[32][33][34], walnuts [35][36][37][38][39][40], groundnut [41][42][43][44], pistachios [30,45,46], coconuts [47][48][49][50][51], etc.) to sorb metal ions from the aqueous environment can also be found in the literature sources.…”

Section: Introductionmentioning

confidence: 99%

“…The adsorption data were described by using two models: Langmuir and Freundlich adsorption isotherms. Both models have been widely used by other authors to examine the sorption equilibrium between a metal solution and a solid biomass phase [41,49,107,108].…”

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confidence: 99%

Use of Different Types of Biosorbents to Remove Cr (VI) from Aqueous Solution

Pertile

Dvorský

Václavík

et al. 2021

Life

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This article summarizes the results of a research study that was focused on the possibility of removing Cr (VI) from aqueous solution, using low-cost waste biomaterial in a batch mode. A set of seven biosorbents was used: Fomitopsis pinicola, a mixture of cones, peach stones, apricot stones, Juglans regia shells, orange peels, and Merino sheep wool. Three grain fractions (fr. 1/2, fr. 0.5/1.0, and fr. 0/0.5 mm) of biosorbents were studied. The aim was to find the most suitable biosorbent that can be tested with real samples. The influence of other factors on the course of biosorption was studied as well (chemical activation of the biosorbent, pH value, rotation speed during mixing, temperature, and the influence of biosorbent concentration). The use of chemical activation and adjustment of the pH to 1.1 to 2.0 make it possible to increase their sorption capacity and, for some biosorbents, to shorten the exposure times. Two kinetic models were used for the analysis of the experimental data, to explain the mechanism of adsorption and its possible speed control steps: pseudo-first and pseudo-second-order. The pseudo-second-order kinetic model seems to be the most suitable for the description of the experimental data. The thermodynamic parameters suggest that the biosorption was endothermic and spontaneous. In the biosorption equilibrium study, the adsorption data were described by using Langmuir and Freundlich adsorption isotherms. The Langmuir model was applicable to describe the adsorption data of all biosorbents. Both models are suitable for chemically treated sheep fleece and peach stones.

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“…Typically, the adsorption of the elements is studied separately. The adsorption of Cr(VI) by magnetized coconut fibres from agricultural waste was studied by Carvalho Costa et al [5] who reported a maximum sorption capacity of 87.38 mg.g -1 for the magnetized fibre and 23.87 mg.g -1 for the natural fibre, with an equilibrium time of less than 20 minutes at an optimum pH of 2.…”

Section: Introductionmentioning

confidence: 99%

Competitive Adsorption of Cr(vi), K(i) and Nh4(i) Ions Onto Natural Zeolites and Bentonites

Bakalár¹

2021

AFST

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Chromium, ammonium, and potassium compounds are pollutants in the environment released mainly by industrial wastewater and they can negatively influence the quality of surface water. Zeolites and bentonites are commonly used adsorbents for removal of pollutant from water. In the study, the adsorbents were used in their natural form, without chemical modification for adsorption of Cr(VI), K(I) and NH4(I) from K2CrO4, K2Cr2O7 and (NH4)2CrO4 in a single compound system for each adsorbate separately. The Langmuir isotherm provided the best correlation for the adsorption onto the zeolites and bentonites. The adsorption capacities of bentonites were higher than the adsorption capacities of zeolites from all the used adsorbates. The maximum sorption capacities of K(I) from K2CrO4 were approximately the same. The maximum sorption capacities of K(I) from K2Cr2O7 and NH4(I) from (NH4)2CrO4 were higher for zeolites than for bentonites. The adsorption of Cr(VI) in the form of anions is preferred to the adsorption of cations. The zeolites and bentonites were found to be suitable adsorbents for removal of Cr(VI) from aqueous solutions.

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Biosorption of Cr(VI) using coconut fibers from agro-industrial waste magnetized using magnetite nanoparticles

Cited by 16 publications

References 41 publications

Biosorption: A Review of the Latest Advances

Biosorption: A Review of the Latest Advances

Use of Different Types of Biosorbents to Remove Cr (VI) from Aqueous Solution

Competitive Adsorption of Cr(vi), K(i) and Nh4(i) Ions Onto Natural Zeolites and Bentonites

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