Treatability studies on wastewater from textile dyeing factories in Bursa, Turkey

Çiner, Fehiman; Solmaz, Seval Kutlu Akal; Yonar, Taner; Üstün, Gökhan Ekrem

doi:10.1504/ijep.2003.004303

Cited by 14 publications

(8 citation statements)

References 4 publications

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“…Dye stuff pollution from the waste-water generated in the textile industry causes adverse aesthetic effects on organisms (Ciner et al, 2003;Alinsafi et al, 2007). Although various industries are responsible for contributing hazardous organic wastes into our water supplies, the textile industry is of particular concern.…”

Section: Introductionmentioning

confidence: 99%

Thermal characterization of methylene blue intercalated montmorillonites by photoacoustic technique

Joseph¹,

Haridas²,

Gopinath³

et al. 2009

Applied Clay Science

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Thermal diffusivity (TD) measurement on commercial K-10 and KSF montmorillonites was carried out by photoacoustic technique. The TD of the montmorillonites after methylene blue adsorption changed with the dye concentration. The repeatedly adsorbed samples showed a lesser TD than the single adsorbed samples. After methylene blue adsorption the acid leached K-10 samples showed well defined changes in TD when compared to the ordered KSF samples.

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Section: Introductionmentioning

confidence: 99%

Thermal characterization of methylene blue intercalated montmorillonites by photoacoustic technique

Joseph¹,

Haridas²,

Gopinath³

et al. 2009

Applied Clay Science

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“…Therefore, it creates environmental issues as it facilitates the mobilization of heavy metals from sediments of lakes and oceans which results in accumulation of hazardous materials (Ciner et al, 2003;Zhang et al, 2011;Sun et al, 2012). Othmer, 1984.…”

Section: Environmental Fate Of Polyvinyl Alcohol Polymer and Its Physical Propertiesmentioning

confidence: 99%

“…As the production of PVA finds new markets, its consumption grows and the volume of wastewater containing PVA increases during its production and consumption. Besides, PVA is highly soluble in water (up to 100 g/L) and it leaches readily from soil into groundwater creating environmental issues due to increasing the mobilization of heavy metals from sediments of lakes and oceans which results in accumulation of hazardous materials (Ciner et al, 2003;Zhang et al, 2011;Sun et al, 2012). Therefore, the removal of PVA from wastewater systems is essential.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of polyvinyl alcohol degradation in UV/H202 photochemical reactors using different hydrogen peroxide feeding strategies

Hamad¹

2021

Preprint

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Synthetic water-soluble polymers are popular in industry and they are produced in large scale owing to their wide spectrum of applications. In particular, the polyvinyl alcohol polymer (PVA), a well-known refractory pollutant, is abundant in wastewater effluents since it is heavily used in industry as paper coating and polarization layer in liquid crystal displays (LCDs). These polymers are non-biodegradable and contaminant to water resources. Alternatively, they can be effectively removed by advanced oxidation processes (AOPs). This study investigates the photo-oxidative degradation of aqueous PVA solution in UV/H2O2 photoreactors and the effect of hydrogen peroxide feeding strategies on the photoreactor performance. The research covers thoroughly the impact of operating conditions on the polymer number average molecular weight (Mn), TOC content, and H2O2 residual under batch, fed-batch and continuous modes of operation. The experimental results show that the performance of the fed-batch photoreactor was higher than the batch system for similar experimental conditions revealing that the way H2O2 is fed into the system has a considerable effect on the PVA degradation. The experimental result of batch system was used as a guide to develop a photochemical kinetic model of the PVA degradation in UV/H2O2 batch process that describes the disintegration of the polymer chains in which the statistical moment approach was considered. The model predictions are in good agreement with data. Realizing the limitations of batch and fed-batch UV/H2O2 processes, an innovative continuous treatment technique was devised to enhance the process performance and to minimize UV dosage. Response surface methodology (RSM), based on Box-Behnken method, was adopted for design set of experiments required to determine the impact of operating variables and their interaction on the process performance. Finally, the results show that Mn was reduced from 130 kg/mol to 24.9, 20.3, and 2.2 kg/mol, corresponding to percent TOC removal of 41.5, 64.2 and 94.4 and H202 residual of 17, 3 and 1% were achieved in batch, fed-batch (120-min), and continuous (30-min) UV/H2O2 photoreactors, respectively. In addition, the overall power consumption of the process was assessed to determine the economic incentive for continuous feeding strategy and ensure the possibility of the process scale-up.

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“…PVA polymers act as collector reagents that can be either chemisorbed or physically adsorbed since these polymer compounds have oxygen hetero-atoms capable of binding to different metal ions effectively and increase the mobilization of heavy metals from sediments of lakes and oceans which results in accumulation of hazardous materials. [6,[8][9][10][11]. Besides, The PVA solutions exhibit high surface activity supporting the formation of foams which can hinder the transport of oxygen into water streams.…”

Section: Introductionmentioning

confidence: 99%

Kinetic Modeling of Photodegradation of Water-Soluble Polymers in Batch Photochemical Reactor

Hamad¹,

Mehrvar²,

Dhib³

2019

Kinetic Modeling for Environmental Systems

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Synthetic water-soluble polymers, well-known refractory pollutants, are abundant in wastewater effluents since they are extensively used in industry in a wide range of applications. These polymers can be effectively degraded by advanced oxidation processes (AOPs). This entry thoroughly covers the development of the photochemical kinetic model of the polyvinyl alcohol (PVA) degradation in UV/ H 2 O 2 advanced oxidation batch process that describes the disintegration of the polymer chains in which the statistical moment approach is considered. The reaction mechanism used to describe the photo-degradation of polymers comprises photolysis, polymer chain scission, and mineralization reactions. The impact of operating conditions on the process performance is evaluated. Characterization of the polymer average molecular weights, total organic carbon, and hydrogen peroxide concentrations as essential factors in developing a reliable photochemical model of the UV/H 2 O 2 process is discussed. The statistical moment approach is applied to model the molar population balance of live and dead polymer chains taking into account the probabilistic chain scissions of the polymer. The photochemical kinetic model provides a comprehensive understanding of the impact of the design and operational variables.

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Treatability studies on wastewater from textile dyeing factories in Bursa, Turkey

Cited by 14 publications

References 4 publications

Thermal characterization of methylene blue intercalated montmorillonites by photoacoustic technique

Thermal characterization of methylene blue intercalated montmorillonites by photoacoustic technique

Experimental investigation of polyvinyl alcohol degradation in UV/H202 photochemical reactors using different hydrogen peroxide feeding strategies

Kinetic Modeling of Photodegradation of Water-Soluble Polymers in Batch Photochemical Reactor

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