Removal of nickel(II) and lead(II) ions from aqueous solution using peat as a low-cost adsorbent: A kinetic and equilibrium study

Bartczak, Przemysław; Norman, Małgorzata; Kłapiszewski, Łukasz; Karwańska, Natalia; Kawalec, Małgorzata; Baczyńska, Monika; Wysokowski, Marcin; Zdarta, Jakub; Ciesielczyk, Filip; Jesionowski, Teofil

doi:10.1016/j.arabjc.2015.07.018

Cited by 140 publications

(84 citation statements)

References 48 publications

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“…For the adsorption of Cd 2+ and Cr 3+ by CNS H 2 SO 4 , there has been a slight alkalinization of the middle, fact that may be related to chemisorption, demonstrating that the adsorption process is complex, due to the influence of various mechanisms. When changes on pH occur, ionic exchange may happen in solution, due to the presence of organic functional groups (Mohan and Pittman, 2007;Bartczak et al 2015).…”

Section: Efficiency Of Adsorption and Desorptionmentioning

confidence: 99%

Removal of Cd(II), Pb(II) and Cr(III) from water using modified residues of Anacardium occidentale L.

et al. 2018

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The pollution of water has been one of the greatest problems faced by the modern society, due to industrialization and urban growth. Rivers, lakes and seas have been continually suffering from the rising concentration of various pollutants, especially toxic elements. This study aimed to evaluate the use of cashew nut shell (Anacardium occidentale) (CNS), after chemical modification with H 2 O 2 , H 2 SO 4 and NaOH, as an new and renewable adsorbent material, for the removal of metals Cd 2+ , Pb 2+ and Cr 3+ in aqueous medium. The adsorbents were characterized by its chemical constitution, structure, infrared spectroscopy, morphology, by means of scanning electron microscopy, determination of the point of zero charge, thermogravimetrical analysis and porosimetry assessments. Tests were conducted to determine the optimal conditions (pH vs. adsorbent mass) for adsorption, by means of multivariate analysis using a central composite design. The adsorption kinetics was evaluated by models of pseudo-first order, pseudo-second order, Elovich and intraparticle diffusion, while adsorption isotherms were linearized by Langmuir, Freundlich and Dubinin-Radushkevich. The effect of initial concentration, temperature and desorption was also performed. The adsorbents exhibited irregular, spongy and heterogeneous structure. FTIR analysis confirms the presence of hydroxyl, aliphatic, phenolic and carboxylic acid groups, which are favorable adsorption characteristics. The pH PZC of adsorbent is 4.35, 2.50 e 6.92, respectively, for CNS H 2 O 2 , H 2 SO 4 and NaOH. The optimum adsorption conditions were as follows: pH 5.0; relation of adsorbent mass/volume of water: 4 g L −1 ; 40 min of contact time for reaching the equilibration. Results suggest the predominance of chemisorption of Cd 2+ and Cr 3+ . Most of biosorbents exhibited good fit by Langmuir and Freundlich, suggesting the occurrence of adsorption on mono-and multilayers. The adsorbents of cashew nut shell exhibited high removal efficiency of Cd, Pb and Cr from waters.

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Section: Efficiency Of Adsorption and Desorptionmentioning

confidence: 99%

Removal of Cd(II), Pb(II) and Cr(III) from water using modified residues of Anacardium occidentale L.

et al. 2018

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“…Activated carbon (AC) adsorbents are commonly used for heavy metal removal from polluted water and are very effective due to their high surface area [26][27]. Dry plants, peat, red mud, fly ash, zeolites, blast furnace slags, hydrotalcites, hydroxides, sawdust, and various biosorbents are also notable materials used for metal treatment [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Absorption Behaviours of Copper, Lead, and Arsenic in Aqueous Solution Using Date Palm Fibres and Orange Peel: Kinetics and Thermodynamics

Amin¹,

Alazba²,

Amin³

2017

Pol. J. Environ. Stud.

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In this study, date palm fibres and orange peel in both individual and hybrid forms were studied for the removal of copper, lead, and arsenic. Equilibrium was achieved after 150 minutes, and the highest and the lowest removal efficiencies were for Cu +2 and As(V), respectively. A slightly higher removal efficiency of metal ions using orange peel was observed, which could be due to the greater number of functional groups on the chemically pre-treated adsorbent. The highest removal was observed at pH 6, and the adsorption data exhibited a linear increase in metal removal capacity with increasing adsorbent concentrations from 0.1 to 2 g/L. A significantly higher removal efficiency was observed for a 45 µm particle size compared to larger particle sizes. Additionally, a 30-40% decrease in removal efficiencies was observed for all three heavy metal ions when using the date palm fibres or the hybrid adsorbent when the initial metal concentrations were increased from 20 to 80 mg/L. The Freundlich model agreed with the experimental data slightly better than the Langmuir model for both date palm fibres and the hybrid adsorbent. A pseudo second-order kinetic model better described the kinetic behaviour of As(V) adsorption on the investigated adsorbents. Date palm fibres exhibited exothermic adsorption, while both orange peel and the hybrid adsorbent displayed exothermic and endothermic reactions. Increased randomness at the solid-liquid interface was observed for all adsorbents, and the Gibbs free energy change values were negative, confirming the spontaneous nature of adsorption, which proceeded in the forward direction.

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“…Nas últimas décadas diversos trabalhos estudaram a possibilidade de utilização de turfas e compostos orgânicos na recuperação de áreas contaminadas por metais (RASHID, 1974;QIN et al, 2006;KALMYKOVA;STRÖMVALL;STEENARI, 2008;LOURIE;GJENGEDAL, 2011;BARTCZAK et al, 2015;GIDARAKOS, 2015;VENEGAS;RIGOL;VIDAL, 2015). O principal enfoque inicial destas pesquisas era o tratamento de águas residuais.…”

Section: Lista De Figurasunclassified

“…Esta composição leva a ótimas propriedades de sorção, associadas, principalmente, à presença na superfície de grupos funcionais ácidos (carboxílico, fenólico e sulfônico), que permitem a troca de íons H + por outros cátions (BARTCZAK et al, 2015).…”

Section: Composição E Processo De Formaçãounclassified

“…Além disso, a água contida no interior das turfeiras pode controlar os níveis e moderar os movimentos das águas subterrâneas e superficiais em grandes Ademais, devido à sua ampla disponibilidade e reduzidos gastos associados à sua extração, pode ser considerada um adsorvente de baixo custo, o que é favorável para seu uso no desenvolvimento de tecnologias de neutralização acessíveis economicamente para os resíduos e impurezas (BROWN; GILL; ALLEN, 2000;BARTCZAK et al, 2015).…”

Section: Possíveis Utilizaçõesunclassified

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Caracterização geológica-geotécnica e estudo da adsorção de Pb, Zn e Cd por turfa e compostos orgânicos

Lima¹

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Removal of nickel(II) and lead(II) ions from aqueous solution using peat as a low-cost adsorbent: A kinetic and equilibrium study

Cited by 140 publications

References 48 publications

Removal of Cd(II), Pb(II) and Cr(III) from water using modified residues of Anacardium occidentale L.

Removal of Cd(II), Pb(II) and Cr(III) from water using modified residues of Anacardium occidentale L.

Absorption Behaviours of Copper, Lead, and Arsenic in Aqueous Solution Using Date Palm Fibres and Orange Peel: Kinetics and Thermodynamics

Caracterização geológica-geotécnica e estudo da adsorção de Pb, Zn e Cd por turfa e compostos orgânicos

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