Issue 10, 2019

Complex organic particulate artificial sewage (COPAS) as surrogate wastewater in anaerobic assays

Abstract

Storage, preservation, and batch-to-batch variability of the influent composition are challenges to laboratory-scale research in the wastewater treatment field. Synthetic wastewaters are commonly used, but many fail to capture the complexity of actual wastewater, especially in terms of particulate organic matter. An alternative synthetic sewage, referred to as complex organic particulate artificial sewage (COPAS), is introduced in this study. COPAS is easily prepared and is based on a simple recipe that uses granular dried cat food as the source of particulate organic matter. On a weight basis, COPAS particles consist of proteins (40%), fats (17%), carbohydrates (43%), and trace nutrients, including vitamins and trace metals. Dissolution/hydrolysis batch tests of COPAS particles indicate that the dissolved organic carbon and nitrogen are released rapidly within the first two hours (approximately 10% C and 17% N). The remaining fraction of organic C and N remain in the particulate form for further dissolution and/or biodegradation. A khyd of 0.82 d−1 was calculated for COPAS based on its protein, fat, and carbohydrate contents. Further, anaerobic bioassays prove the biodegradability of COPAS with approximately 60% theoretical methane produced after 45 days of incubation.

Graphical abstract: Complex organic particulate artificial sewage (COPAS) as surrogate wastewater in anaerobic assays

Article information

Article type
Paper
Submitted
01 5 2019
Accepted
13 8 2019
First published
23 8 2019

Environ. Sci.: Water Res. Technol., 2019,5, 1661-1671

Complex organic particulate artificial sewage (COPAS) as surrogate wastewater in anaerobic assays

A. L. Prieto, C. S. Criddle and D. H. Yeh, Environ. Sci.: Water Res. Technol., 2019, 5, 1661 DOI: 10.1039/C9EW00365G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements