Removal of heavy metal from industrial wastewater using modified activated coconut shell carbon

Amuda, Omotayo S.; Giwa, Abdur-Rahim Adebisi; Bello, Isah Adewale

doi:10.1016/j.bej.2007.02.013

Cited by 482 publications

(260 citation statements)

References 28 publications

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“…O carvão preparado a partir de casca de coco e ativado termicamente apresenta excelente capacidade de adsorção como adsorvente devido à presença de grupos funcionais básicos, tais como grupos carboxílicos, hidroxilas, e lactonas, que têm elevada afinidade com íons metálicos (AMUDA; GIWA; BELLO, 2007). É pode ser usado no processo de tratamento de água sendo um adsorvente versátil, para a remoção de odores indesejáveis, cor, sabor, e outras impurezas orgânicas e inorgâni-cas de águas residuais, domésticas e industriais (GÜZEL & UZUN, 2002).…”

Section: Introductionunclassified

Simulação numérica e ensaios experimentais da remoção de Fe (III) da água para utilização nas indústrias alimentícias

Silva

Dervanoski

Haupenthal

et al. 2015

Eng. Sanit. Ambient.

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RESUMO ABSTRACTIn this study were performed the kinetics and isotherms of adsorption of the ions Fe (III) from synthetic affluent using activated carbon from coconut shell as adsorbent. The objective was to obtain the equilibrium and kinetic parameters of the process and thereby simulating different operating conditions in a adsorption column fixed bed. It was evaluated the influence of three temperatures different on the adsorption of Fe (III), in which the temperature increase indicated adsorption exotherm.The Freundlich isotherm showed the best fit to the experimental data.At the kinetic study the model that best fit to the experimental data was the model Pseudo-First Order for the three concentrations studied.The finite volume method was used for discretization of the mathematical equations and a computational algorithm was implemented in FORTRAN.The computational code was validated with experimental data found in the literature (maximum error of 6.2%) can thus simulate different operating conditions of the system.

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Section: Introductionunclassified

Simulação numérica e ensaios experimentais da remoção de Fe (III) da água para utilização nas indústrias alimentícias

Silva

Dervanoski

Haupenthal

et al. 2015

Eng. Sanit. Ambient.

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“…Coconut shell was first washed with double distilled water to eliminate the impurities like dirt and dried at 60°C temperature in an oven for 12 h. After drying, coconut shell was crushed in a high-speed rotary mill into 2-3 mm size of pieces and stored for additional processing in a muffle furnace (Amudaa et al 2007;Sodeinde 2012). To prepare the coconut shell activated carbon using chemical activation method, the dried coconut shell was soaked with 2N H 2 S0 4 in a muffle furnace at temperature 300°C for 12 h in 1:3 ratio of solid to liquid to enhance the surface area.…”

Section: Preparation Of Biosorbentmentioning

confidence: 99%

Equilibrium isotherm and kinetic studies for the simultaneous removal of phenol and cyanide by use of S. odorifera (MTCC 5700) immobilized on coconut shell activated carbon

Singh

Balomajumder

2016

Appl Water Sci

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In this study, simultaneous removal of phenol and cyanide by a microorganism S. odorifera (MTCC 5700) immobilized onto coconut shell activated carbon surface (CSAC) was studied in batch reactor from mono and binary component aqueous solution. Activated carbon was derived from coconut shell by chemical activation method. Ferric chloride (Fecl 3 ), used as surface modification agents was applied to biomass. Optimum biosorption conditions were obtained as a function of biosorbent dosage, pH, temperature, contact time and initial phenol and cyanide concentration. To define the equilibrium isotherms, experimental data were analyzed by five mono component isotherm and six binary component isotherm models. The higher uptake capacity of phenol and cyanide onto CSAC biosorbent surface was 450.02 and 2.58 mg/g, respectively. Nonlinear regression analysis was used for determining the best fit model on the basis of error functions and also for calculating the parameters involved in kinetic and isotherm models. The kinetic study results revealed that Fractal-like mixed first second order model and Brouser-Weron-Sototlongo models for phenol and cyanide were capable to offer accurate explanation of biosorption kinetic. According to the experimental data results, CSAC with immobilization of bacterium S. odorifera (MTCC 5700) seems to be an alternative and effective biosorbent for the elimination of phenol and cyanide from binary component aqueous solution.

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“…Here Ce is equilibrium concentration;qe is the quantity of metal adsorbed at equilibrium 6 (6) Here qe = metal adsorbed at equilibrium, qt = metal adsorbed at a fixed time t, K1 = Pseudo first order rate constant, which was measured by the plot. The above equation is in the form of y = mx+c The plot of t vslog(qe -qt) gave a straight line with slope -K1/2.303, from which K1 was obtained.…”

Section: Adsorption Isothermsmentioning

confidence: 99%

OPTIMIZATION OF ZINC(II) BIOSORPTION ONTOBoodleastruveiodes(MARINE ALGAE) BY CENTRAL COMPOSITE DESIGN

2017

RJC

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Heavy metal pollution is a major threat to the world as they can be toxic to all forms of life at high concentrations. They are released into the environment by a variety of industrial activities. The present study aims at removal of zinc from wastewater using low-costbiosorbentBoodlea struveiodes(marine algae). Batch experiments revealed that adsorption was influenced by various factors such as pH, initial metal ion concentration, the dosage of adsorbent, the size of the adsorbent and contact time. Langmuir, Freundlich and Tempkin adsorption isotherm models were used to test equilibrium data and they satisfactorily described the data. In order to analyze the effect of variables, the process parameters were set to optimum values pH 5, initial metal ion concentration 26.364 mg/l and dosage of adsorbent 3.0g were optimized with Response surface methodology through Central composite design. At optimum conditions, the maximum percentage of adsorption of Zinc by Boodlea struveiodeswas found to be 93.39.

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Removal of heavy metal from industrial wastewater using modified activated coconut shell carbon

Cited by 482 publications

References 28 publications

Simulação numérica e ensaios experimentais da remoção de Fe (III) da água para utilização nas indústrias alimentícias

Simulação numérica e ensaios experimentais da remoção de Fe (III) da água para utilização nas indústrias alimentícias

Equilibrium isotherm and kinetic studies for the simultaneous removal of phenol and cyanide by use of S. odorifera (MTCC 5700) immobilized on coconut shell activated carbon

OPTIMIZATION OF ZINC(II) BIOSORPTION ONTOBoodleastruveiodes(MARINE ALGAE) BY CENTRAL COMPOSITE DESIGN

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