Removal of Cu(II) from aqueous solution by agricultural by-product: Peanut hull

Zhu, Chao; Wang, Liping; Chen, Wenbin

doi:10.1016/j.jhazmat.2009.02.085

Cited by 239 publications

(89 citation statements)

References 41 publications

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“…The sorption capacity strongly increased with pH in the range 3-4. The same effect was observed by Zhu et al, (2008) who explained that it is because the point of zero charge for peanut hulls is about 3.5. At pH values higher than 4, the change in capacity values was not significant for copper and iron.…”

Section: Results and Discussion Chemical Composition Of Peanut Hullssupporting

confidence: 78%

Removal of Fe+3 and Cu+2 Ions from Aqueous Solutions by Adsorption Using Peanut Hulls

2017

AJAS

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The present study was conducted to evaluate the possibility of using peanut hulls for the removal of Fe +3 and Cu +2 from aqueous solutions.This paper incorporates the effects of dose, concentration and pH.Adsorption of heavy metal on adsorbents was found to increase on decreasing initial concentration, the sorption capacity strongly increased with pH in the range 3-4. The results showed that the removal of heavy metals, such as Fe +3 and Cu +2 from aqueous solution was efficient using peanut hulls as bioadsorbent. The adsorption percentage of Fe +3 and Cu +2 ions by peanut hulls were very high. The Langmuir isotherm model was the best to describe the experimental data. The maximum sorption capacity was found to be 79.28 and 96.58 mg/g for Fe +3 and Cu +2 , respectively. Over all, the present findings suggest that peanut hulls are friendly environmental bioadsorbent, efficient and low cost biosorbent which represents an excellent potential for Fe +3 and Cu +2 removals from aqueous solutions.

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Section: Results and Discussion Chemical Composition Of Peanut Hullssupporting

confidence: 78%

Removal of Fe+3 and Cu+2 Ions from Aqueous Solutions by Adsorption Using Peanut Hulls

2017

AJAS

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“…The highest biosorption capacity was found to be 12.12 mg/g. A comparison of copper biosorption capacities for various adsorbents was reported in the literature (Aksu and Isoğlu, 2005;Zhu et al, 2009). The direct comparison of adsorbent capacity was due to the varying experimental conditions.…”

mentioning

confidence: 99%

Evaluation of different isotherm models, kinetic, thermodynamic, and copper biosorption efficiency ofLobaria pulmonaria(L.) Hoffm.

Kılıç

Atakol

Aras

et al. 2013

Journal of the Air & Waste Management Association

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The biosorption characteristics of Cu(II) ions from aqueous solution using Lobaria pulmonaria (L.) Hoffm. biomass were investigated. The biosorption efficiency of Cu(II) onto biomass was significantly influenced by the operating parameters. The maximum biosorption efficiency of L. pulmonaria was 65.3% at 10 mg/L initial metal concentration for 5 g/L lichen biomass dosage. The biosorption of Cu(II) ions onto biomass fits the Langmuir isotherm model and the pseudo-second-order kinetic model well. The thermodynamic parameters indicate the feasibility and exothermic and spontaneous nature of the biosorption. The effective desorption achieved with HCl was 96%. Information on the nature of possible interactions between the functional groups of the L. pulmonaria biomass and Cu(II) ions was obtained via Fourier transform infrared (FTIR) spectroscopy. The results indicated that the carboxyl (-COOH) and hydroxyl (-OH) groups of the biomass were mainly involved in the biosorption of Cu(II) onto L. pulmonaria biomass. The L. pulmonaria is a promising biosorbent for Cu(II) ions because of its availability, low cost, and high metal biosorption and desorption capacities.Implications: Lobaria pulmonaria is a promising biosorbent for Cu(II) ions because of its availability, low cost, and high metal biosorption and desorption capacities. To the best of our knowledge, this is the first paper on the biosorption Cu by L. pulmonaria.

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“…5c, d which indicates poor crystallinity of pure A. heterophylla biomass. Further, the shifts in 2H and d-spacing values were observed in Cd ?2 -loaded biomass (Zhu et al 2009;Adan et al 2011). These observations reveal that there was a change in crystallinity of biomass A. heterophylla after biosorption.…”

Section: X-ray Diffraction Studiesmentioning

confidence: 99%

Biosorption of Cd+2 by green plant biomass, Araucaria heterophylla: characterization, kinetic, isotherm and thermodynamic studies

Sarada

Prasad²,

Kumar

et al. 2017

Appl Water Sci

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The present study attempted to analyze the biosorption behavior of novel biosorbent, Araucaria heterophylla (green plant) biomass, to remove Cd ?2 from solutions against various parameters, i.e., initial metal ion concentration, pH, temperature, sorbent dosage and biomass particle size. The maximum biosorption was found to be 90.02% at pH 5.5 and biosorption capacity (q e ) of Cd ?2 is 9.2506 mg g -1 . The Langmuir and Freundlich equilibrium adsorption isotherms were studied and it was observed that Freundlich model is the best fit than the Langmuir model with correlation co-efficient of 0.999. Kinetic studies indicated that the biosorption process of Cd ?2 well followed the pseudo-second-order model with R 2 0.999. Thermodynamic studies observed that the process is exothermic (DH°negative). Free energy change (DG°) with negative sign reflected the feasibility and spontaneous nature of the process. The chemical functional -OH groups, CH 2 stretching vibrations, C=O carbonyl group of alcohol, C=O carbonyl group of amide, P=O stretching vibrations and -CH groups were involved in the biosorption process. The XRD pattern of the A. heterophylla was found to be mostly amorphous in nature. The SEM studies showed Cd ?2 biosorption on selective grains of the biosorbent. It was concluded that A. heterophylla leaf powder can be used as an effective, low-cost, and environmentally friendly biosorbent for the removal of Cd ?2 from aqueous solution.

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Removal of Cu(II) from aqueous solution by agricultural by-product: Peanut hull

Cited by 239 publications

References 41 publications

Removal of Fe+3 and Cu+2 Ions from Aqueous Solutions by Adsorption Using Peanut Hulls

Removal of Fe+3 and Cu+2 Ions from Aqueous Solutions by Adsorption Using Peanut Hulls

Evaluation of different isotherm models, kinetic, thermodynamic, and copper biosorption efficiency ofLobaria pulmonaria(L.) Hoffm.

Biosorption of Cd+2 by green plant biomass, Araucaria heterophylla: characterization, kinetic, isotherm and thermodynamic studies

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