Batch removal of copper(II) and zinc(II) from aqueous solutions with low-rank Turkish coals

Karabulut, Solmaz; Karabakan, Abdülkerim; Deni̇zli̇, Adil; Yürüm, Yuda

doi:10.1016/s1383-5866(99)00067-2

Cited by 171 publications

(68 citation statements)

References 18 publications

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“…Dentre os mais comuns, destaca-se o Cu(II); sua acumulação no corpo humano pode causar doenças no cérebro, na pele, no pâncreas e no coração. 12,13 Existem vários métodos convencionais para remoção de íons de metais pesados de efluentes aquosos, como a precipitação química, filtração por membranas, troca iônica e adsorção. Cada método citado apresenta vantagens e desvantagens inerentes.…”

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Caracterização de escamas do peixe piau (Leporinus elongatus) e sua aplicação na remoção de Cu(II) de meio aquoso

et al. 2009

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Recebido em 4/3/08; aceito em 29/7/08; publicado na web em 20/1/09 CHARACTERIZATION OF THE PIAU FISH (Leporinus elongatus) SCALES AND THEIR APPLICATION TO REMOVE Cu(II) FROM AQUEOUS SOLUTIONS. Characterization of fish scales of Leporinus elongatus and their application in the removal of Cu(II) from aqueous solutions are described. It was observed that the scales are mainly formed by hydroxyapatite and type I collagen. Adsorption of Cu(II) was performed using batch experiments at 25 0C. The ANOVA statistical results have shown that the Langmuir model was successful applied to determine the maximum adsorption capacity of 2.686 x10 -4 mol g -1 and the Langmuir equilibrium parameter (b) of 168.8 L mol -1 . The Langmuir separation parameter, R L , has shown favorable adsorption of Cu(II) on the scales.Keywords: bioadsorbents; fish scales; copper adsorption. introduçãoO peixe Leporinus elongatus é uma das 110 espécies pertencentes à família Anastomidae, grupo de peixes da ordem Characiformes, existente abundantemente em todas as bacias hidrográficas do Brasil.1 Conhecido popularmente como piau, tem elevada importância comercial, podendo ser encontrado nos mercados e feiras livres em várias partes do país.O piau possui escamas do tipo elasmóide, especificamente do tipo ciclóide, caracterizadas por suas elasticidades e formas variáveis.2 Estudos de caracterização e morfologia de escamas elasmóides de peixes ósseos indicam que estas consistem de duas regiões distintas: uma fase inorgânica, composta por apatita, e uma fase orgânica composta basicamente por colágeno.3,4 Os trabalhos encontrados na literatura exploram escamas de peixes provenientes de ambientes marinhos.3-6 Apesar das estruturas básicas das escamas serem relativamente semelhantes entre si, sejam de peixe do mar ou de água doce, podem ocorrer diferenças nas quantidades e nos tipos de minerais diferentes da apatita, devido às diferenças dos ambientes aquáticos.3 Na atividade pesqueira, as escamas dos peixes geralmente são descartadas no lixo, salvo quando são coletadas para o artesanato em algumas pequenas comunidades, revelando-se um material de baixo custo e abundante, ainda pouco explorado pela comunidade científica. Geralmente os trabalhos encontrados na literatura apenas se propõem a estudar a idade e o crescimento dos peixes a partir das estruturas anelares das escamas. 7-10Materiais que podem ser usados como adsorventes de metais pesados e outros poluentes, conhecidos na literatura como adsorventes de baixo custo, tais como bagaço de cana-de-açúcar, casca de arroz, sabugo de milho e outros, compostos essencialmente por polissacarídeos; para que um material receba esta classificação, as seguintes características são necessárias: deve requerer pouco processamento, ser encontrado em abundância na natureza ou ser um material de despejo de alguma atividade industrial. 11As descargas de efluentes industriais contendo metais pesados, provenientes da mineração, de processos eletrolíticos, da produção de baterias, dentre outros, têm contribuído para a poluição ...

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Caracterização de escamas do peixe piau (Leporinus elongatus) e sua aplicação na remoção de Cu(II) de meio aquoso

et al. 2009

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“…Pehlivan et al [26] found q m = 0.176 mg/g with sugar beat pulp and q m = 11.11 mg/g with fly ash. Other authors have reported a monolayer capacity of 1.66 mg/g for the adsorption of Zn(II) by Low rank Turkish coal [27] and 8.64 mg/g by Granite [28]. It can be seen that CP roots are an effective adsorbent for Zn(II), when compared with some other adsorbents.…”

Section: Construction Of Isotherms and Model Fittingmentioning

confidence: 82%

Biosorptive Removal of Zinc from Aqueous Solution by Algerian <i>Calotropis procera</i> Roots

Meroufel¹,

Zenasni²,

Merlin³

et al. 2015

JEP

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Potentially toxic trace elements, such as zinc, with high levels in water are very serious problems in many places around the world, sometimes in relation to natural sources and in other cases to anthropogenic ones. Adsorption process is among the most effective techniques for removing of many heavy metal ions from different types of water. In this study, an attempt has been made to investigate the efficiency of Calotropis procera roots (CP) in removing of Zn(II) from aqueous solution by using batch mode technique. During the removal process, the effects of solution pH, Zn concentrations and contact time on adsorption efficiency by CP roots were studied. Experimental equilibrium data were analyzed by the Langmuir and Freundlich isotherm models. The results showed that the best fit was achieved with the Langmuir isotherm equation with maximum adsorption capacity of 9.69 mg/g. The biosorption of Zn(II) was a fast process and followed the pseudo-second-order kinetic.

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“…Also, Copper is used through fertilizer, fungicides, algicides, insecticides, dyes manufacture and petroleum refining. Excess exposure and accumulation in living organisms can cause serious disturbances such as headache, nausea, vomiting, diarrhea, cramps, convulsions, liver injury and acute poisoning to the human body or even death (Karabulut et al 2000;Sobecka, 2001;WHO, 2004;Chen, 2005 andPaulino et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Investigation of Copper Removal from Aqueous Solution by Cement Kiln Dust as Industrial By-Product

2017

Alexandria Science Exchange Journal: An International Quarterly

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This study investigated the copper (Cu +2 ) removal from aqueous solution by cement kiln dust (CKD) as industrial by-product in cement manufacturing process. CKD was identified by Fourier transform infrared (FTIR), scanning electron microscopy (SEM) and surface areas show the differences of physicochemical properties. Batch equilibrium experiments were carried out at 20, 25 and 30 o C with time intervals extended to 96 h to investigate the efficiency of the CKD in the removal of Cu +2 . CKD expressed high affinity for removal of Cu +2 and was not affected by temperature or time. The removal of Cu +2 was indicated by changes of FTIR and SEM images before and after sorption experiments. The kinetic data were evaluated by fractional power, Elovich, pseudo-first order and pseudo-second-order kinetic models. The kinetic studies demonstrated that rate of the removal followed pseudo-second-order kinetic model (r 2 =0.99). Thermodynamic parameters, the change of free energy (ΔG•), enthalpy (ΔH•) and entropy (ΔS • ) were calculated for predicting the nature of adsorption. The parameters showed that the process was feasible, spontaneous and exothermic under experiment conditions. Solubility equilibrium for various expected copper compounds was estimated and the solubility of copper in Cu-CKD system suggested to be controlled by Cu CO 3 precipitation under experiment condition. The results indicated that CKD can be used as a low cost and effective sorbent for copper ions from aqueous solutions.

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Batch removal of copper(II) and zinc(II) from aqueous solutions with low-rank Turkish coals

Cited by 171 publications

References 18 publications

Caracterização de escamas do peixe piau (Leporinus elongatus) e sua aplicação na remoção de Cu(II) de meio aquoso

Caracterização de escamas do peixe piau (Leporinus elongatus) e sua aplicação na remoção de Cu(II) de meio aquoso

Biosorptive Removal of Zinc from Aqueous Solution by Algerian <i>Calotropis procera</i> Roots

Investigation of Copper Removal from Aqueous Solution by Cement Kiln Dust as Industrial By-Product

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Batch removal of copper(II) and zinc(II) from aqueous solutions with low-rank Turkish coals

Cited by 171 publications

References 18 publications

Caracterização de escamas do peixe piau (Leporinus elongatus) e sua aplicação na remoção de Cu(II) de meio aquoso

Caracterização de escamas do peixe piau (Leporinus elongatus) e sua aplicação na remoção de Cu(II) de meio aquoso

Biosorptive Removal of Zinc from Aqueous Solution by Algerian &lt;i&gt;Calotropis procera&lt;/i&gt; Roots

Investigation of Copper Removal from Aqueous Solution by Cement Kiln Dust as Industrial By-Product

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Biosorptive Removal of Zinc from Aqueous Solution by Algerian <i>Calotropis procera</i> Roots