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Degradation of some illicit compounds in sewage sludge batch tests

Olajide, MA and Coffey, M and Birkett, JW (2014) Degradation of some illicit compounds in sewage sludge batch tests. Elixir Applied Chemistry, 68B. pp. 22739-22751. ISSN 2229-712X

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Abstract

The batch tests enabled determination of the degradation of the compounds at different temperatures and times, using various sludge types after characterization. Removal rates of cocaine (91.0%), benzoylecgonine (90.6%), heroin (97.9%), morphine (99.7%), 6 monoacetylmorphine (93.3%) and diazepam (99.7%) were measured after 3 hours equilibration; partition coefficients (Kd) for these six substances ranged from 1.2 – 68.1 Kg L-1. The degradation of compounds at 19 ± 0.5o C was relatively greater but it still occurred slowly at 4 ± 0.5o C, at between 5 and 10%. Work encompassed in this study directly measures illicit drug removal rates in laboratory studies for the first time. The application of batch studies in calculating removal rates in sewage works is an improvement over prior studies where assumptions on removal rates at STW were made.

Item Type: Article
Subjects: Q Science > QD Chemistry
Divisions: Pharmacy & Biomolecular Sciences
Publisher: Elixir Publishers
Date Deposited: 23 Jan 2017 10:16
Last Modified: 07 Sep 2017 04:14
URI: http://researchonline.ljmu.ac.uk/id/eprint/5345

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