LIFE CYCLE ASSESSMENT OF ACTIVATED CARBON ADSORPTION AND OZONATION TO REMOVE MICROPOLLUTANTS FROM TEXTILE WASTEWATER

2022-8-29
Akdeniz, Ayşe Sena
Show full item record
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
355
views
215
downloads
To avoid potential adverse effects by micropollutants in secondary textile wastewater, it is necessary to apply an advanced treatment process, among which activated carbon adsorption and ozone oxidation are the most attractive alternatives. There is still a lack of studies evaluating the environmental impacts of these processes for the tertiary treatment of textile wastewater. Using the life cycle assessment (LCA) methodology, this study assesses and compares the environmental impacts of ozone oxidation and GAC adsorption. Micropollutants were included in the study using the results from a literature survey on the concentration of micropollutants in secondary textile wastewater and also in the effluents from activated carbon adsorption and ozone oxidation treatment. SimaPro 9.2.0.2 was used to model the processes using background data from the Ecoinvent v3.6 database. Adopting the impact analysis method of Impact 2002+, the impacts of two scenarios: GAC adsorption and ozone oxidation, were assessed. Results show that the environmental impact of ozone oxidation is significantly higher than that of GAC adsorption for almost all impact categories due to higher energy consumption. The GAC adsorption shows almost 90 % lower impacts in 14 of 15 categories studied. It is worth noting that the environmental impacts of ozone oxidation are strongly related to energy consumption for ozone generation, which emphasizes the importance of the source of electricity. The results from the study support GAC adsorption as a suitable process for removing micropollutants from secondary textile effluent.
Life Cycle Assessment, Activated Carbon Adsorption, Ozone Treatment, SimaPro, Textile Wastewater
https://hdl.handle.net/11511/99718
Graduate School of Natural and Applied Sciences, Thesis

Suggestions

Adsorption of Cd(II) ions from aqueous solutions using activated carbon prepared from olive stone by ZnCl2 activation
Kula, Ibrahim; Ugurlu, Mehmet; Karaoglu, M. Hamdi; Celik, Ali (2008-02-01)
This study is aimed to remove Cd(II) ions from aqueous solutions by adsorption. As adsorbent, activated carbon prepared from olive stone, an agricultural solid by-product was used. Different activating agent (ZnCl2) amounts and adsorbent particle size were studied to optimize adsorbent surface area. The adsorption experiments were conducted at different parameters such as, adsorbent dose, temperature, equilibrium time and pH. According to the experiments results, the equilibrium time, optimum pH, adsorbent ...
Environmental Applications of Natural Zeolites
Kazemian, Hossein; Gedik, Kadir; İmamoğlu, İpek (2012-01-01)
Environmental pollution particularly at very low concentrations is very difficult to remove from contaminated media. Adsorption by means of relatively inexpensive natural adsorbents such as zeolites can be considered as a cost effective alternative treatment of such contaminated streams. The unique chemical and structural characteristics of natural zeolites made them potential materials for a multitude of environmental applications where materials are needed for effective binding, adsorbing, and filtering. ...
Comparison of physicochemical characteristics and photofermentative hydrogen production potential of wastewaters produced from different olive oil mills in Western-Anatolia, Turkey
Eroglu, Ela; Eroglu, Inci; Gündüz, Ufuk; Yuecel, Meral (2009-04-01)
Olive oil extraction produces a dark-colored wastewater that contains nutrients that can be further processed using biotechnology, in parallel with treatment for disposal. For instance, olive mill wastewater (OMW) can be used as a substrate for photofermentative hydrogen production by purple bacteria. A comparative study was investigated with several OMW samples front different olive oil mills in Western-Anatolia, Turkey. The composition of OMW varies significantly for each mill; thus, a detailed physicoche...
OZONATION OF TRACE ORGANIC-COMPOUNDS - MODEL PREDICTIONS VERSUS EXPERIMENTAL-DATA
YURTERI, C; GUROL, MD (1990-06-01)
This paper is focused on the use of ozone for the elimination of manmade organic micropollutants from drinking waters and waste effluents requiring advanced treatment. A mathematical model was developed to simulate the physical transport and chemical oxidation phenomena prevailing during the process of ozonation. A packed column reactor was constructed in order to test the aptness of the process model. After determining the fluid-dynamic and mass transfer properties of the reactor, stock water solutions spi...
Biological treatment and nanofiltration of denim textile wastewater for reuse
ŞAHİNKAYA, Erkan; UZAL, Nigmet; Yetiş, Ülkü; Dilek, Filiz Bengü (2008-05-30)
This study aims at coupling of activated sludge treatment with nanofiltration to improve denim textile wastewater quality to reuse criteria. In the activated sludge reactor, the COD removal efficiency was quite high as it was 91 +/- 2% and 84 +/- 4% on the basis of total and soluble feed COD, respectively. The color removal efficiency was 75 +/- 10%, and around 50-70% of removed color was adsorbed on biomass or precipitated within the reactor. The high conductivity of the wastewater, as high as 8 mS/cm, did...
Citation Formats
A. S. Akdeniz, “LIFE CYCLE ASSESSMENT OF ACTIVATED CARBON ADSORPTION AND OZONATION TO REMOVE MICROPOLLUTANTS FROM TEXTILE WASTEWATER,” M.S. - Master of Science, Middle East Technical University, 2022.
METU IIS - Integrated Information Service open@metu.edu.tr