Abstract
Most synthetic water-soluble polymers from industrial effluents are discarded into the aqueous environment. Due to their water solubility they can reach conventional sewage disposal systems and contaminate water resources as they are not amenable to biodegradation. Therefore, the possibility of rendering these materials to biologically manageable chemical compounds is a challenging task. The applications of advanced oxidation technologies (AOTs) for treating wastewater containing recalcitrant and inhibitory organics have risen drastically during the past few decades. AOTs mediate fast degradation or decomposition of the target organic compounds by producing free radical species. In this study, the photooxidative degradation of water-soluble polymers in wastewater is studied using different methods of AOTs. The experimental design, statistical analysis, and optimization of different processes of AOTs are investigated employing various methods of response surface methodology (RSM). Using RSM, the effects of different process parameters on the response function are determined. Also, a detailed mechanistic kinetic model is developed along with photoreactor design and modeling for a laboratory-scale batch recirculating photoreactor. Most synthetic water-soluble polymers from industrial effluents are discarded into the aqueous environment. Due to their water solubility they can reach conventional sewage disposal systems and contaminate water resources as they are not amenable to biodegradation. Therefore, the possibility of rendering these materials to biologically managable chemical compounds is a challenging task. The applications of advanced oxidation technologies (AOTs) for treating wastewater containing recalcitrant and inhibitory organics have risen drastically during the past few decades. AOTs mediate fast degradation or decomposition of the target organic compounds by producing free radical species. In this study, the photooxidative degradation of water-soluble polymers in wastewater is studied using different methods of AOTs. The experimental design, statistical analysis, and optimization of different processes of AOTs are investigated employing various methods of response surface methodology (RSM). Using RSM, the effects of different process parameters on the response function are determined. Also, a detailed mechanistic kinetic model is developed along with photoreactor design and modeling for a laboratory-scale batch recirculating photoreactor
Highlights
Water-soluble polymers are produced in large volumes and due to their solubility in water, they are widely used in a variety of industrial products and applications including pharmaceuticals, paints, adhesives, coatings, textiles, and detergents (Bénard et al, 2011)
Continuous-distribution kinetics is applied in kinetic modeling of the photo-oxidative degradation of polymers in aqueous solution based on the population balance equations (PBEs)
The optimum percent total organic carbon (TOC) removal (84%) was found after 150 min at the operating conditions of 10 mg L-1 poly(ethylene oxide) (PEO), 780 mg L-1 H2O2, pH 3, and 0.5 L min-1 recirculation rate based on the developed quadratic model
Summary
Water-soluble polymers are produced in large volumes and due to their solubility in water, they are widely used in a variety of industrial products and applications including pharmaceuticals, paints, adhesives, coatings, textiles, and detergents (Bénard et al, 2011). Radical depolymerization for the photo-oxidative degradation of synthetic water-soluble polymers in solution is mathematically modeled using population balance equations. There is a lack of sufficient information in the open literature on the kinetic modeling of photo-Fenton process as one of the AOTs for the degradation of water-soluble polymers in wastewater because of the complexity of the degradation pathway of high molecular weight compounds. In order to achieve this goal, it is always important to design a laboratory photoreactor with the simplest mathematical representation for both mass and radiation balances In this case, the intrinsic kinetic parameters achieved in the laboratory-scale photoreactor are applied to the commercial-scale photoreactor with different configuration and mode of operation
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
