Removal of THM precursors by GAC: Ankara case study

Date

2002-03-01

Author

Capar, G
Yetiş, Ülkü

Metadata

Show full item record

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

Item Usage Stats

141
views

0
downloads

The effectiveness of granular activated carbon (GAC) adsorption for the removal of natural organic matter and trihalomethanes from Ivedik Water Treatment Plant of Ankara City is investigated. Freundlich Isotherm constants K and n were determined as 17.61 and 1.66, respectively. Bench-scale GAC columns were run with empty bed contact times (EBCT) varying from 0.40 to 2.67 min to evaluate adsorption performance. 50% exhaustion values were used for comparison. The treated volumes of water increased with EBCT, showing a linear increase in GAC service life. Correspondingly, the carbon usage rate decreased. The capacities calculated by the isotherm equation and achieved by columns were also compared. The column capacities were within 43-65% of the isotherm capacities at complete breakthrough. However, they were only within 8-17% of the isotherm capacities at 50% breakthrough.

Subject Keywords

GAC, Adsorption, Natural organic matter, Trihalomethanes

URI

https://hdl.handle.net/11511/47864

Journal

WATER RESEARCH

DOI

https://doi.org/10.1016/s0043-1354(01)00334-7

Collections

Department of Environmental Engineering, Article

Suggestions

OpenMETU
Core

Removal of trihalomethane precursors by granular activated carbon treatment CAPAR, Goksen; Demirer, Göksel Niyazi; Dilek, Filiz Bengü; Yetiş, Ülkü (2001-02-01) This research covers the determination of the existing situation of trihalomethane (THM) levels in the distribution system of Ankara City and also focuses on the investigation of effectiveness of granular activated carbon (GAC) adsorption for the removal of natural organic matter (NOM) that are THM precursors and also THMs. For this purpose, a survey was carried out at 14 selected points in the city and the THMs were observed to be present in the Ivedik Water Treatment Plant (IWTP) filter effluent and in th...
Removal of Pesticide from Water with Fenton-like Process: Effectiveness of a new heterogeneous catalyst (Fenton Benzeri Proses ile Sulardan Pestisit Giderimi: Yeni bir heterojen katalizörün etkinliğinin araştırılması) Dilek, Filiz Bengü(2017-12-31) Extensive utilization of pesticides in the form of herbicides, fungicides, insecticides result in surface water pollution through runoff from agricultural lands and urban discharges. Besides, their very low concentrations (μg/L or ng/L) in surface water bodies and in domestic wastewaters, removal of these pollutants in Wastewater Treatment Plants (WWTPs) are recommended due to being highly persistent, toxic, bio-accumulative and hence dangerous for aquatic ecosystems. Advanced oxidation processes (AOPs) are...
Removal of pesticides from secondary treated urban wastewater by reverse osmosis ATEŞ, NURAY; UZAL, NİĞMET; Yetiş, Ülkü; Dilek, Filiz Bengü (2022-04-01) The residues of pesticides that reach water resources from agricultural activities in several ways contaminate drinking water resources and threaten aquatic life. This study aimed to investigate the performance of three reverse osmosis (RO) membranes (BW30-LE, SW30-XLE, and GE-AD) in rejecting four different pesticides (tributyl phosphate, flutriafol, dicofol, and irgarol) from secondary treated urban wastewater and also to elucidate the mechanisms underlying the rejection of these pesticides. RO experiment...
Removal of imidacloprid from wastewaters by ozonation and photo-ozonation Sönmez, Büşra; Dilek, Filiz Bengü; Department of Environmental Engineering (2019) The widespread occurrence of micropollutants in the receiving water bodies apparently shows that conventional wastewater treatment plants (WWTP) are not capable to remove these compounds. Imidacloprid (IMI), which is a specific pollutant and an insecticide, exceeded Environmental Quality Standards (EQS) value (0.14 µg/L, annual average) in several receiving water bodies of WWTPs in Yeşilırmak basin. With the aim of examining advanced treatment methods to meet EQS value and to achieve good surface water qual...
Synthesis, characteristics and mechanistic insight into the clays and clay minerals-biochar surface interactions for contaminants removal-A review Arif, Muhammad; Liu, Guijian; Yousaf, Balal; Ahmed, Rafay; Irshad, Samina; Ashraf, Aniqa; Zia-ur-Rehman, Muhammad; Rashid, Muhammad Saqib (2021-08-10) Biochar (BC), a low-cost, porous and carbon-rich material, exhibits excellent potential as an adsorbent in the immobilization and removal of environmental contaminants from water and soil. To enhance the surface area, functionalities and adsorption efficiency of BC, various clay and clay mineral-based physical and chemical modification methods have been adopted. Although extensive studies have been conducted to evaluate the removal efficiencies of BC-clays and clay minerals composites, insight into synthesi...

Citation Formats

G. Capar and Ü. Yetiş, “Removal of THM precursors by GAC: Ankara case study,” WATER RESEARCH, pp. 1379–1384, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47864.