Treatment of dye aqueous solutions using nanofiltration polyamide composite membranes for the dye wastewater reuse

Mo, Joong Hwan; Lee, Yong Hwan; Kim, Jaephil; Jeong, Jae Yun; Jegal, Jonggeon

doi:10.1016/j.dyepig.2006.09.007

Cited by 166 publications

(70 citation statements)

References 14 publications

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“…The main pollutants in textile wastewater, dyes and dyestuff assisters, which are usually toxic, visually unpleasant and non-degradable, have caused grave annoyance to both aquatic biosphere and human race, deteriorating crisis of water resources (Khraisheh et al 2005;Lotito et al 2012;Zahrim et al 2011). The conventional methods combining primary treatment and the secondary biochemical treatment, may not be there to meet the legislative requirements of emission or reuse standard (Mo et al 2008). Researchers have tried a variety of processing methods, such as chemical coagulation (Verma et al 2012), adsorption (Laasri et al 2007), nanofiltration (Lau and Ismail 2009) and advanced oxidation (Manenti et al 2014), to eliminate dye matters in wastewater.…”

Section: Introductionmentioning

confidence: 99%

Modeling and optimization of the flocculation processes for removal of cationic and anionic dyes from water by an amphoteric grafting chitosan-based flocculant using response surface methodology

Yang

et al. 2015

Environ Sci Pollut Res

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In this study, an amphoteric grafting chitosan-based flocculant (carboxymethyl chitosan-graft-poly(2-methacryloyloxyethyl) trimethyl ammonium chloride, denoted as CMC-g-PDMC) was applied to removal of the anionic and cationic dyes, acid Green 25 (AG25) and Basic Bright Yellow (7GL), from water. Flocculation conditions have been optimized by response surface methodology (RSM) on the basis of central composite design (CCD) using flocculant dosage, initial solution pH and temperature as input variables. The second-order and cubic regression models, which have been both tested by the analysis of variance (ANOVA), were constructed to link the output response (the dye removal factor) with the aforementioned input variables, respectively. The second-order regression model well described the process of AG25 removal, whereas the cubic one is more suitable for that of 7GL. The effects of those variables on the flocculation performance of CMC-g-PDMC for removal of the two dyes containing opposite charges from aqueous solutions have been studied, and the flocculation mechanisms including the interactive effects between various influencing factors have been discussed in detail also.

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Section: Introductionmentioning

confidence: 99%

Modeling and optimization of the flocculation processes for removal of cationic and anionic dyes from water by an amphoteric grafting chitosan-based flocculant using response surface methodology

Yang

et al. 2015

Environ Sci Pollut Res

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“…[1] The removal of dyes from polluted water sources using conventional technologies is problematic due to wide range of parameters that needs to be taken into consideration in every case such as dye's concentration, pH range of the reaction medium, temperature etc. [2][3][4] In recent years, the photocatalytic degradation of organic pollutants by photocatalysts has drawn considerable attention due to their low toxicity and the production of CO2 and H2O as main decomposition products. [5][6] However, in practice wastewater treatment using photocatalysis techniques exhibit a number of disadvantages, such as harsh reaction conditions, high operation cost and the decreased photocatalytic efficiency due to poor light transmittance of high concentration dye solutions.…”

Section: Introductionmentioning

confidence: 99%

Modular Polyoxometalate‐Layered Double Hydroxide Composites as Efficient Oxidative Catalysts

Chen

Yao

Miras

et al. 2015

Chemistry A European J

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Abstract:The exploitation of intercalation techniques in the field of two-dimensional layered materials offers unique opportunities for controlling chemical reactions in confined spaces and developing nanocomposites with desired functionality. In this paper, we demonstrate the exploitation of the novel and facile 'one-pot' anionexchange method for the functionalization of layered double hydroxides (LDHs). As a proof of concept, we demonstrate the intercalation of a series of polyoxometalate (POM) clusters, Na3[PW12O40]·15H2O (Na3PW12), K6[P2W18O62]·14H2O (K6P2W18), and Na9LaW10O36·32H2O (Na9LaW10) into tris(hydroxymethyl)aminomethane (Tris) modified layered double hydroxides (LDHs) under ambient conditions without the necessity of degassing CO2. Investigation of the resultant intercalated materials of Tris-LDHs-PW12 (1), Tris-LDH-P2W18 (2), and Tris-LDH-LaW10 (3) for the degradation of methylene blue (MB), rhodamine B (RB) and crystal violet (CV) has been carried out, where Tris-LDH-PW12 reveals the best performance in the presence of H2O2. Additionally, degradation of a mixture of RB, MB and CV by Tris-LDH-PW12 follows the order of CV > MB > RB, which is directly related to the designed accessible area of the interlayer space. Also, the composite can be readily recycled and reused at least ten cycles without measurable decrease of activity.

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“…Sewage can be treated by various sophisticated treatment processes; a processing technology that maintains constant water quality is the most important consideration Mo et al, 2008;Park et al, 2010).…”

Section: Introduction 1)mentioning

confidence: 99%

A Study on the Improvement of Membrane Separation and Optimal Coagulation by Using Effluent of Sewage Treatment Plant in Busan

Jung¹,

Youngik²,

Han³

2013

Journal of Environmental Science International

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The objectives of this paper are the characterization of the pretreatment of wastewater by microfiltration (MF) membranes for river maintenance and water recycling. This is done by investigation of the proper coagulation conditions, such as the types and doses of coagulants, mixing conditions (velocity gradients and mixing periods), pH, etc., using jar tests. The effluent water from a pore control fiber (PCF) filter located after the secondary clarifier at Kang-byeon Sewage Treatment Plant (K-STP) was used in these experiments. Two established coagulants, aluminum sulfate (Alum) and poly aluminum chloride (PAC), which are commonly used in sewage treatment plants to treat drinking water, were used in this research. The results indicate that the optimal coagulation velocity gradients (G) and agitation period (T) for both Alum and PAC were 200-250 s -1 and 5 min respectively, but the coagulation efficiencies for both Alum and PAC were lower at low values of G and T. For a 60 min filtration period on the MF, the flux efficiencies (J/J0 (%)) at the K-STP effluent that were coagulated by PAC and Alum were 92.9 % and 79.9 %, respectively, under the same coagulation conditions. It is concluded that an enhanced membrane process is possible by effective filtration of effluent at the K-STP using the coagulation-membrane separation process.

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Treatment of dye aqueous solutions using nanofiltration polyamide composite membranes for the dye wastewater reuse

Cited by 166 publications

References 14 publications

Modeling and optimization of the flocculation processes for removal of cationic and anionic dyes from water by an amphoteric grafting chitosan-based flocculant using response surface methodology

Modeling and optimization of the flocculation processes for removal of cationic and anionic dyes from water by an amphoteric grafting chitosan-based flocculant using response surface methodology

Modular Polyoxometalate‐Layered Double Hydroxide Composites as Efficient Oxidative Catalysts

A Study on the Improvement of Membrane Separation and Optimal Coagulation by Using Effluent of Sewage Treatment Plant in Busan

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