Please use this identifier to cite or link to this item:
http://dx.doi.org/10.14279/depositonce-8765
Main Title: | Fate of Trace Organic Compounds in Granular Activated Carbon (GAC) Adsorbers for Drinking Water Treatment |
Author(s): | Sperlich, Alexander Harder, Mareike Zietzschmann, Frederik Gnirss, Regina |
Type: | Article |
Language Code: | en |
Abstract: | Granular activated carbon (GAC) adsorbers for drinking water treatment were operated for approx. 14 months and the breakthrough of dissolved organic carbon (DOC) and trace organic chemicals (TOrCs) was monitored. Effluent concentration profiles of gabapentin and valsartan acid increase already at throughputs of <10,000 BV. The corresponding breakthrough curves flatten out without reaching the influent concentration level. This strongly indicates biological degradation of these substances in the GAC adsorbers under aerobic conditions, contributing to a more efficient use of GAC. The observed biodegradation in pilot GAC adsorbers also confirms recent reports of biodegradation of gabapentin and valsartan acid during managed aquifer recharge. Oxypurinol is comparatively well adsorbed and no breakthrough was observed during the experimental period. Adsorption capacity and breakthrough characteristics of oxypurinol appear very similar to carbamazepine. Breakthrough of GAC adsorbers operated with drinking water was compared to those of groundwater-fed adsorbers. The results show, that it is generally advisable to use previously aerated influents for GAC fixed-bed adsorbers because this can substantially improve biological removal of otherwise poorly adsorbable compounds and ensure full GAC accessibility for adsorbates by avoiding the undesirable formation of inorganic precipitates on adsorption sites. |
URI: | https://depositonce.tu-berlin.de/handle/11303/9732 http://dx.doi.org/10.14279/depositonce-8765 |
Issue Date: | 30-Jun-2017 |
Date Available: | 8-Aug-2019 |
DDC Class: | 600 Technik, Technologie 551 Geologie, Hydrologie, Meteorologie |
Subject(s): | GAC adsorption oxypurinol gabapentin valsartan acid carbamazepine TOrCs drinking water groundwater |
Sponsor/Funder: | BMBF, 02WRS1368, TestTools – Entwicklung und Validierung von schnellen Testmethoden zum Spurenstoffverhalten in technischen und natürlichen Barrieren des urbanen Wasserkreislaufs |
License: | https://creativecommons.org/licenses/by/4.0/ |
Journal Title: | Water |
Publisher: | MDPI |
Publisher Place: | Basel |
Volume: | 9 |
Issue: | 7 |
Article Number: | 479 |
Publisher DOI: | 10.3390/w9070479 |
EISSN: | 2073-4441 |
Appears in Collections: | FG Wasserreinhaltung » Publications |
Files in This Item:
File | Description | Size | Format | |
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water-09-00479.pdf | 1.66 MB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License