Izvorni znanstveni članak
Peroxodisulphate salts as novel photooxidants for color wastewater treatment
Igor Peternel
; Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, Zagreb, Hrvatska
Anita Ptiček Siročić
; Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, Zagreb, Hrvatska
Natalija Koprivanac
; Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, Zagreb, Hrvatska
Sažetak
The discharge of colored wastewaters from the plant application industries, such as the textile industry, is one of the major threats to the environment due to the documented health hazards caused by the toxicity and very often by the carcinogenic nature of contained organic contaminents. Hence, such wastewater is necessary to treat prior to discharge. Wastewater management technology involves a multidisciplinary approach and complies with stringent law regulation of the European Union. In the present study, Advanced Oxidation Processes (AOPs): Fenton type processes, UV/ O3, UV/ S2O82-/O3, have been applied to degrade and mineralize organic dye C. I. Reactive Red 45 (RR 45) in water solution. Optimal process conditions for the highest mineralization efficiency were determined on the basis of total organic carbon (TOC). The photooxidative degradation and mineralization of RR45 was investigated using UV radiation in the presence of peroxodisulfat (S2O82-) salt in a batch photoreactor. The influence of peroxodisulfat dosage, pH, initial dye concentration and added synthetic zeolites ZSM5 type on the rate of color removal and mineralization extents was also studied. In the case when ozonation processes were applied the influence of initial pH, peroxodisulfat dosage and initial dye concentration on the rate of color removal and decrease of TOC values was studied. Obtained results show that maximal partial mineralization extents depended on the reaction conditions for each of the applied processes.
Ključne riječi
advanced oxidation processes; organic reactive dyes; mineralization; total organic carbon (TOC)
Hrčak ID:
138670
URI
Datum izdavanja:
1.8.2012.
Posjeta: 1.089 *