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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Her, Namguk Zoh, Kyung-Duk Choi, Dae-Jin Kim, Seung-Kyu Nam, Seung-Woo |
| Description | Author Affiliation: Nam SW ( Department of Environmental Health, School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea.); Choi DJ ( Department of Environmental Health, School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea.); Kim SK ( Department of Marine Science, College of Natural Science, Incheon National University, Incheon, Republic of Korea.); Her N ( Department of Chemistry and Environmental Sciences, Korea Army Academy at Young-Cheon, Young-Cheon, Gyeongbuk, Republic of Korea.); Zoh KD ( Department of Environmental Health, School of Public Health, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, Republic of Korea. Electronic address: zohkd@snu.ac.kr.) |
| Abstract | In this study, we investigated adsorption characteristics of nine selected micropollutants (six pharmaceuticals, two pesticides, and one endocrine disruptor) in water using an activated carbon. The effects of carbon dosage, contact time, pH, DOM (dissolved organic matter), and temperature on the adsorption removal of micropollutants were examined. Increasing carbon dosage and contact time enhanced the removal of micropollutants. Sorption coefficients of hydrophilic compounds (caffeine, acetaminophen, sulfamethoxazole, and sulfamethazine) fit a linear isotherm and hydrophobic compounds (naproxen, diclofenac, 2, 4-D, triclocarban, and atrazine) fit a Freundlich isotherm. The removal of hydrophobic pollutants and caffeine were independent of pH changes, but acetaminophen, sulfamethazine, and sulfamethoxazole were adsorbed by mainly electrostatic interaction with activated carbon and so were affected by pH. The decrease in adsorption removal in surface water samples was observed and this decrease was more significant for hydrophobic than hydrophilic compounds. The decline in the adsorption capacity in surface water samples is caused by the competitive inhibition of DOM with micropollutants onto activated carbon. Low temperature (5°C) also decreased the adsorption removal of micropollutants, and affected hydrophobic compounds more than hydrophilic compounds. The results obtained in this study can be applied to optimize the adsorption capacities of micropollutants using activated carbon in water treatment process. |
| ISSN | 03043894 |
| Volume Number | 270 |
| e-ISSN | 18733336 |
| Journal | Journal of Hazardous Materials |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-04-15 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Carbon Chemistry Endocrine Disruptors Pesticides Pharmaceutical Preparations Water Pollutants, Chemical 2,4-dichlorophenoxyacetic Acid Acetaminophen Adsorption Atrazine Caffeine Carbanilides Diclofenac Hydrogen-ion Concentration Hydrophobic And Hydrophilic Interactions Naproxen Sulfamethazine Sulfamethoxazole Temperature Waste Disposal, Fluid Water Purification Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science Discipline Environmental Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Pollution Waste Management and Disposal Health, Toxicology and Mutagenesis Environmental Engineering |
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