Designing and operating a pilot plant for purification of industrial wastewater from toxic organic compounds by utilizing solar energy

다국어 초록 (Multilingual Abstract)

The aim of the present project was to design and operate a solar reactor system and to analyze its performancefor the removal of different types of toxic organic pollutants (e.g., synthetic methyl violet dye and phenol) fromwater with titanium dioxide as the photocatalyst. Various operating parameters were studied to investigate the behaviorof the designed reactor like initial substrate concentration, loading of catalyst, pH of solution, and H2O2 concentration.
The operating parameters were optimized to give higher efficiency to the reactor performance. Results showedthat a photocatalysis system, operating at optimum conditions, offered within one hour of operation degradation upto 95.27% for synthetic dye, while a conversion of 99.95% was obtained in three hours. With phenol, degradation wasup to 80.0% and 98.0%, respectively. The removal of TOC for the two toxic materials was also at high levels. Thisconfirmed the feasibility of the designed solar system. The kinetics of dye degradation was first order with respect todye concentration and could be well described by Langmuir-Hinshelwood model. A preliminary design of a solar photocatalysissystem as an alternative treatment method for wastewater effluents from an Iraqi textile mill was introduced.

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