Removal of reactive dyes from wastewater using Fe(III) coagulant

Papić, Sanja; Koprivanac, Natalija; Božić, Ana Lončarić

doi:10.1111/j.1478-4408.2000.tb00013.x

Cited by 51 publications

(26 citation statements)

References 17 publications

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“…Treatment of dyed textile effluents is a major challenge especially for developing countries. Management of these wastewaters requires specific treatment techniques such as activated carbon adsorption 7,9 , membrane processes 10 , coagulation-flocculation 11 , reverse osmosis, chemical oxidation or reduction [12][13][14][15][16][17] , etc. The Advanced Oxidation Processes (AOPs) show specific advantages over conventional treatments because they can eliminate non-biodegradable organic components and avoid the need to dispose of residual sludge.…”

Section: Introductionmentioning

confidence: 99%

Study of the photocatalytic degradation of methylene blue dye using titanium-doped hydroxyapatite

et al. 2015

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Organic dyes and colouring textile agents are persistent pollutant materials that are difficult to decompose by microbiological treatment processes. Their oxidation through photocatalysis is an alternative way to prevent contamination of the environment. In this work, calcium deficient hydroxyapatite (HAP) was synthesized and doped with different amounts of titanium. Its performance in photocatalytic degradation of -methylene blue dye (MB) was then demonstrated. The main parameters which govern the photocatalytic treatment efficiency, such as doped titanium amount, pH, initial concentration of MB, weight of catalyst added to solution, UV-irradiation period and bubbling oxygen-have been-investigated. Photodegradation of MB is found to be effective with HAP/11 wt. %Ti in oxygenated medium. However, pH has no significant effect on the yield of discoloration.

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Section: Introductionmentioning

confidence: 99%

Study of the photocatalytic degradation of methylene blue dye using titanium-doped hydroxyapatite

et al. 2015

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“…There are many processes available for removal of color from waste effluents, namely chemical oxidation (McClung and Lemley 1994), foam flotation (Lin and Lo 1996), electrolysis (Bousher et al 1997), biodegradation (Oakes and Gratton 1998), adsorption (Poulios and Aetopoulou 1999;Ncibi et al 2007), chemical coagulation (Papic et al 2000) and photocatalysis (Lopez-Grimau and Gutierrez 2006;Divya et al 2013). However, adsorption onto activated carbon seems to be one of the effective and reliable physicochemical treatment methods (Pala and Tokat 2002;Mall et al 2005) and due to economical and environmentally friendly reasons (Toor and Jin 2012).…”

Section: Introductionmentioning

confidence: 99%

Application of response surface methodology (RSM) for optimization of color removal from POME by granular activated carbon

Al-Khatib

Mamun

Akbar

2014

Int. J. Environ. Sci. Technol.

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Color is one of the major remaining contaminants in the palm oil mill effluent (POME) following the conventional treatment of POME. The removal of color from POME using adsorption on activated carbon was investigated. The adsorption experimental design was performed using the standard response surface method (RSM) design that is central composite design to determine the optimum process variables for color removal by using the Design-Expert software (version 7.0. Stat-Ease, trial version). Besides obtaining optimum values, RSM also has the advantage of studying the interaction between various experimental parameters compared to one-factor-at-a-time. The equilibrium experimental data were analyzed by Langmuir and Freundlich isotherms. The statistical analysis showed that the quadratic model as well as the model terms was significant. The model had very low probability value (0.0003). The R 2 for the model was 0.9184 and the adjusted R 2 was 0.8380. The validation of the model showed experimental value and predicted value of 0.124 and 0.106, respectively. The optimum conditions suggested by the model for the process variable were 87.9 min, 4.05 and 7.86 g, for time, pH and granular activated carbon dose, respectively. The maximum removal obtained at these conditions was 89.95 %. The adsorption isotherm data were fitted well to the Langmuir isotherm compared to Freundlich isotherm with R 2 value of 0.850 for the former and 0.273 for the later.

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“…As técnicas mais utilizadas para descoloração envolvem processos físico-químicos, principalmente mecanismos de adsorção, coagulação e precipitação, ultrafiltração, processos biológicos, além de processos oxidativos avançados (Papic et al, 2000;Karadag et al, 2006;Mohorcic et al, 2006; Bielska and Prochaska, 2007;Foletto et al, 2010). Alguns desses métodos geralmente são combinados, de forma a aumentar a eficiência do processo.…”

Section: Introductionunclassified

Influência Do Tratamento Ácido Em Casca De Pinhão Sobre Os Parâmetros De Equilíbrio E Cinéticos No Processo De Adsorção De Corante Em Solução Aquosa

Neubauer¹,

Keller²,

Rodrigues³

et al. 2015

Anais Do XX Congresso Brasileiro De Engenharia Química

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RESUMO -Este trabalho trata do estudo da adsorção do corante azul de metileno em solução aquosa por casca de pinhão, tanto in natura quanto tratada com HCl 1M. As cascas de pinhão foram secas em estufa, trituradas e, por peneiramento, utilizou-se apenas partículas contidas entre 0,5 e 0,841 mm. Os ensaios foram conduzidos em batelada, controlando-se a agitação e temperatura. Analisou-se a influência da temperatura, pH e concentração inicial de corante. Os parâmetros de adsorção foram obtidos a partir das isotermas de Langmuir e Freundlich, utilizando-se regressão linear e não linear. Os resultados mostraram melhor adaptação da cinética de pseudossegunda ordem e da isoterma de Langmuir aos dados experimentais, tanto para o pinhão in natura quanto para o tratado com HCl. Determinou-se, a partir dos resultados de equilíbrio, que o pinhão tratado com HCl possui maior capacidade de adsorção e maior constante cinética. INTRODUÇÃOAtualmente, a má disposição final de esgotos e efluentes tem promovido um grande problema de agressão aos recursos hídricos e, se estes não forem tratados e dispostos devidamente, causam uma série de problemas físicos, químicos e biológicos num corpo d'água (Reife e Fremann, 1996).Dentre os efluentes industriais, os corantes dispostos em soluções aquosas ainda constituem um sério problema, pois, mesmo em pequenas quantidades, conferem cor intensa e apresentam elevadas demandas química e bioquímica de oxigênio, constituindo um dos efluentes mais complexos problemáticos a serem tratados (AKSU, 2005).As técnicas mais utilizadas para descoloração envolvem processos físico-químicos, principalmente mecanismos de adsorção, coagulação e precipitação, ultrafiltração, processos biológicos, além de processos oxidativos avançados (Papic et al., 2000;Karadag et al., 2006;Mohorcic et al., 2006; Bielska and Prochaska, 2007;Foletto et al., 2010). Alguns desses métodos geralmente são combinados, de forma a aumentar a eficiência do processo.A adsorção é um dos métodos mais eficientes empregados na remoção de cor, odor, óleos e poluentes orgânicos. O carvão ativado é um dos adsorventes mais utilizados, no Área temática: Engenharia Ambiental e Tecnologias Limpas 1

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Removal of reactive dyes from wastewater using Fe(III) coagulant

Cited by 51 publications

References 17 publications

Study of the photocatalytic degradation of methylene blue dye using titanium-doped hydroxyapatite

Study of the photocatalytic degradation of methylene blue dye using titanium-doped hydroxyapatite

Application of response surface methodology (RSM) for optimization of color removal from POME by granular activated carbon

Influência Do Tratamento Ácido Em Casca De Pinhão Sobre Os Parâmetros De Equilíbrio E Cinéticos No Processo De Adsorção De Corante Em Solução Aquosa

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