Utilization of barley straws as biosorbents for Cu2+ and Pb2+ ions

Pehlivan, Erol; Altun, Türkan; Parlayıcı, Şerife

doi:10.1016/j.jhazmat.2008.08.115

Cited by 163 publications

(47 citation statements)

References 45 publications

(46 reference statements)

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“…Table 2 summarizes the results of copper and cadmium adsorption capacities of the peels washed, and it shows the comparison with the results reported by other authors at different pH values. The adsorption capacity obtained shows "typical" values for this kind of material if compared with results reported by other authors (Palma et al, 2003;Singh et al, 2005;Verma et al, 2008;Pehlivan et al, 2009). The metal sorption depends on the type of shell and pH value.…”

Section: Resultssupporting

confidence: 80%

Chemical characterization of agroforestry solid residues aiming its utilization as adsorbents for metals in water

Luzardo¹,

Velasco²,

Alves³

et al. 2015

Rev. bras. eng. agríc. ambient.

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A B S T R A C TIn this work, a study of the correlation between the functional groups present in the chemical structure of the fibers of coconut shells, cocoa and eucalyptus, and their adsorption capacity of Cd +2 and Cu +2 ions from water was performed. The content of soluble solids and reactive phenols in aqueous extracts were determined. The chemical functional groups present in the fibers were examined using the IR spectra. The adsorption capacity of the peels was determined using atomic absorption spectrophotometer. For Cd +2 , a significant correlation between the adsorption capacity and some specific chemical functional groups present in the fiber was verified. The potential use of these peels, as adsorbent of Cd +2 ions, is based on the presence of OH functional groups such as aryl-OH, aryl-O-CH 2 of phenol carboxylic acids, as well as carbonyl groups derived from carboxylic acid salts, in these fibers.Caracterização química de resíduos sólidos agroflorestais visando à sua utilização como adsorventes de metais em água R E S U M O Neste trabalho foi realizado um estudo da correlação entre os grupos funcionais presentes na estrutura química das fibras de casca de coco, cacau e de eucalipto e sua capacidade de adsorção de íons de Cd +2 e Cu +2 da água. Foram determinados o teor de sólidos solúveis e fenois reativos em extratos aquosos. Os grupos químicos funcionais presentes nas fibras foram analisados utilizando-se os espectros de IV. A capacidade de adsorção das cascas foi determinada através de um espectrofotômetro de absorção atômica. Para os íons de Cd +2 foi encontrada uma correlação significativa entre a capacidade de adsorção e alguns grupos funcionais químicos presentes na fibra. O uso potencial dessas cascas, como adsorvente de íons de Cd +2 , se baseia na presença de grupos funcionais arilo-OH, arilo-O-CH 2 de ácidos carboxílicos fenois, tais como grupos carbonila derivados a partir de sais de ácidos carboxílicos, nessas fibras.

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Section: Resultssupporting

confidence: 80%

Chemical characterization of agroforestry solid residues aiming its utilization as adsorbents for metals in water

Luzardo¹,

Velasco²,

Alves³

et al. 2015

Rev. bras. eng. agríc. ambient.

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“…With respect to R L values, all systems exhibit favorable biosorption nature. Moreover, the magnitude of all isotherm parameters obtained in this work agreed well with those reported previously in the literature for metal ion-biomass sorption systems [19][20][21]32,40].…”

Section: Modeling Of Adsorption Isotherms 341 Single Component Systemsupporting

confidence: 90%

“…The q m values for Cu 2+ and Pb 2+ ions at 60°C were 0.0891 mmol/g (5.66 mg/g) and 0.1127 mmol/g (23.35 mg/g), respectively. As comparison, the maximum sorption capacities of several biomass-based sorbents for sequestering copper and lead ions from water and wastewater are listed in Table 3 [32][33][34][35][36][37][38][39]. With respect to R L values, all systems exhibit favorable biosorption nature.…”

Section: Modeling Of Adsorption Isotherms 341 Single Component Systemmentioning

confidence: 99%

Incorporation of selectivity factor in modeling binary component adsorption isotherms for heavy metals-biomass system

Soetaredjo

Kurniawan

et al. 2013

Chemical Engineering Journal

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“…Saueprasearsit et al, (2010), reported that increasing adsorbent dose increases amount adsorbed but decreases adsorption density. This is mainly because of unsaturation of adsorption sites (Pehilivan et al, 2008). This could also be due to particle interaction such as aggregation resulting from high adsorbent dose.…”

Section: Resultsmentioning

confidence: 99%

Equilibrium and kinetic studies of Cu (II), Cd (II), Pb (II) and Fe (II) adsorption from aqueous solution using cocoa (<i>Theobroma cacao</i>) pod husk

Obike¹,

Igwe²,

Emeruwa³

et al. 2018

Journal of Applied Sciences and Environmental Management

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ABSTRACT:The potentials of cocoa pod husk to adsorb Cu (II), Cd (II), Pb (II) and Fe (II) ions from aqueous solutions was investigated in a batch system. The effects of contact time, initial metal ion concentration and adsorbent dose on the adsorption capacity of the adsorbent were examined. The percent adsorbed increased as initial metal ion concentration, contact time and adsorbent dose was increased until equilibrium was reached. Langmuir isotherm and pseudo-second order models were used to analyse the equilibrium and kinetic experimental data respectively. Equilibrium experimental data of Cu (II), Cd (II), Pb (II) and Fe (II) adsorption onto cocoa pod fitted well to Langmuir model and the kinetic data also fitted well to the pseudo-second order model, as indicated by the correlation coefficients. The maximum sorption capacity (qmax) ranged as 4.16, 4.42, 4.69 and 4.83 mg/g for Fe (II), Cd (II), Cu (II) and Pb (II) respectively. This study demonstrated that the waste cocoa pod could be used as a potential adsorbent for toxic metals such as Cu (II), Cd (II), Pb (II) and Fe (II).

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Utilization of barley straws as biosorbents for Cu2+ and Pb2+ ions

Cited by 163 publications

References 45 publications

Chemical characterization of agroforestry solid residues aiming its utilization as adsorbents for metals in water

Chemical characterization of agroforestry solid residues aiming its utilization as adsorbents for metals in water

Incorporation of selectivity factor in modeling binary component adsorption isotherms for heavy metals-biomass system

Equilibrium and kinetic studies of Cu (II), Cd (II), Pb (II) and Fe (II) adsorption from aqueous solution using cocoa (<i>Theobroma cacao</i>) pod husk

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