Catalytic ozonation of an industrial textile wastewater in a heterogeneous continuous reactor

Date

2015-09-01

Author

Polat, Didem
Balci, Irem
Ozbelge, Tulay A.

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

147
views

0
downloads

Textile wastewaters (WWs) are highly colored and non-biodegradable having variable compositions of colored dyes, surfactants and toxic chemicals. Discharge of these WWs to the environment is very detrimental for ecosystems, therefore new methods have been investigated in order to meet the quality criteria of water and the discharge standards of the partly treated WWs. Recently, catalytic ozonation being one of the advanced oxidation processes (AOPs), is considered as an effective method that can be used in the treatment of industrial WWs. In this study, catalytic ozonation of industrial textile WW obtained from AKSA Textile Plant in Yalova/Turkey has been examined in a three phase reactor where the solid catalyst phase was fluidized at different experimental conditions. The effects of inlet chemical oxygen demand (COD) value, pH, different catalyst types [perfluorooctylalumina (PFOA) and alumina] and gas to liquid flow rate ratios (QG/QL) have been determined. Pseudo-first order degradation rate constants for the dyes in the real industrial textile WW were determined in terms of COD, by taking samples at different heights along the reactor during an experimental run at steady state. Moreover, "absorbance vs. concentration" calibration correlations were developed to estimate the concentrations of colored dyes in the sample. This provided the opportunity to measure the dye concentrations and estimate the percent removals of each dye in the samples, separately. Besides COD removals, also total organic carbon (TOC) removals and ozone consumptions were measured and discussed by comparing the results obtained in both sole and catalytic ozonation experiments.

Subject Keywords

Catalytic ozonation, Industrial textile wastewater, Perfluorooctylalumina (PFOA), Alumina catalyst

URI

https://hdl.handle.net/11511/67211

Journal

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

DOI

https://doi.org/10.1016/j.jece.2015.04.020

Collections

Department of Chemical Engineering, Article

Suggestions

OpenMETU
Core

Catalytic ozonation of industial textile wastewaters in a three phase fluidized bed reactor Polat, Didem; Özbelge, Ayşe Tülay; Department of Chemical Engineering (2010) Textile wastewaters are highly colored and non-biodegradable having variable compositions of colored dyes, surfactants and toxic chemicals. Recently, ozonation is considered as an effective method that can be used in the treatment of industrial wastewaters; catalytic ozonation being one of the advanced oxidation processes (AOPs), is applied in order to reduce the ozone consumption and to increase the chemical oxygen demand (COD) and total organic carbon (TOC) removals. In this study, catalytic ozonation of ...
Catalytic ozonation with non-polar bonded alumina phases for treatment of aqueous dye solutions in a semi-batch reactor Erol, Funda; Ozbelge, Tuelay A. (2008-06-01) Semi-batch experiments were conducted to investigate the effects of catalyst type, pH, initial dye concentration and production rate of ozone on the catalytic ozonation of the dyes, namely Acid Red-151 (AR-151) and Remazol Brilliant Blue R (RBBR). The used catalysts were alumina, 25% (w/w) perfluorooctyl alumina (PFOA), 50% (w/w) PFOA and 100% (w/w) PFOA. The results showed that the overall percent dye removal after 30 min of the reaction was not affected significantly by the catalyst type. However, highest...
Catalytic Ozonation of Dye Solutions in a Semi-Batch Reactor Pirgalıoğlu, Saltuk; Özbelge, Ayşe Tülay; Department of Chemical Engineering (2008) Treatment of textile wastewaters containing dye materials using the conventional methods based on biological treatment is not possible. In order to overcome this problem, ozonation based on the oxidation of organic pollutants with ozone gas dissolved in aqueous phase have been studied widely. Catalytic ozonation and advanced oxidation processes (AOP) are also used in order to increase the efficiency of sole ozonation In this work, catalytic ozonation processes in the presence of Copper Sulfide (CuS) powder ...
Laboratory investigation of the treatment of chromium contaminated groundwater with iron-based permeable reactive barriers Uyuşur, Burcu; Ünlü, Kahraman; Department of Environmental Engineering (2006) Chromium is a common groundwater pollutant originating from industrial processes such as metal plating, leather tanning and pigment manufacturing. Permeable reactive barriers (PRBs) have proven to be viable and cost-effective systems for remediation of chromium contaminated groundwater at many sites. The purpose of this research presented in this thesis is to focus on two parameters that affect the performance of PRB on chromium removal, namely the concentration of reactive media and groundwater flux by ana...
Sequential Anaerobic Aerobic biological treatment of Dalaman SEKA Pulp and Paper Industry effluent TEZEL, ULAŞ; Bayramoğlu, Tuba Hande; DEMİRER, GÖKSEL NİYAZİ; GÜVEN, ENGİN (Elsevier BV, 2001-12-01) In the pulp and paper industry, lignin and other color compounds are removed by chemical agents in bleaching process. Use of chlorine-based agents results in production of degradation products which include various chloro-organic derivatives. Since these new compounds are highly chlorinated, they cause a problem in the treatment of pulp and paper industry wastewaters. Chemical precipitation, lagooning, activated sludge, and anaerobic treatment are the processes used for treating pulp and paper effluents. Fu...

Citation Formats

D. Polat, I. Balci, and T. A. Ozbelge, “Catalytic ozonation of an industrial textile wastewater in a heterogeneous continuous reactor,” JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, pp. 1860–1871, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67211.