Next Article in Journal
A Novel Multiattribute Decision-Making Method Based on Point–Choquet Aggregation Operators and Its Application in Supporting the Hierarchical Medical Treatment System in China
Next Article in Special Issue
Poultry Slaughterhouse Wastewater Treatment Using Submerged Fibers in an Attached Growth Sequential Batch Reactor
Previous Article in Journal
Perceived Risk, Expected Benefits and Pig Farmers’ Behaviors of Veterinary Drug Usage
Previous Article in Special Issue
Full-Scale Experimental Study of Groundwater Softening in a Circulating Pellet Fluidized Reactor
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Int. J. Environ. Res. Public Health 2018, 15(8), 1717; https://doi.org/10.3390/ijerph15081717

Effect of Bioaugmentation on Biogas Yields and Kinetics in Anaerobic Digestion of Sewage Sludge

1
Faculty of Environmental Engineering, Lublin University of Technology, 40B Nadbystrzycka, 20-618 Lublin, Poland
2
Faculty of Environmental Sciences, University of Warmia and Mazury in Olsztyn, 45g Słoneczna, 10-709 Olsztyn, Poland
*
Author to whom correspondence should be addressed.
Received: 29 June 2018 / Revised: 1 August 2018 / Accepted: 8 August 2018 / Published: 10 August 2018
(This article belongs to the Special Issue Municipal Wastewater Treatment)
Full-Text   |   PDF [2937 KB, uploaded 10 August 2018]   |  

Abstract

Bioaugmentation with a mixture of microorganisms (Bacteria and Archaea) was applied to improve the anaerobic digestion of sewage sludge. The study was performed in reactors operating at a temperature of 35 °C in semi-flow mode. Three runs with different doses of bioaugmenting mixture were conducted. Bioaugmentation of sewage sludge improved fermentation and allowed satisfactory biogas/methane yields and a biodegradation efficiency of more than 46%, despite the decrease in hydraulic retention time (HRT) from 20 d to 16.7 d. Moreover, in terms of biogas production, the rate constant k increased from 0.071 h−1 to 0.087 h−1 as doses of the bioaugmenting mixture were increased, as compared to values of 0.066 h−1 and 0.069 h−1 obtained with sewage sludge alone. Next-generation sequencing revealed that Cytophaga sp. predominated among Bacteria in digesters and that the hydrogenotrophic methanogen Methanoculleus sp. was the most abundant genus among Archaea. View Full-Text
Keywords: anaerobic digestion; wastewater sludge; bioaugmentation; metagenome; NGS anaerobic digestion; wastewater sludge; bioaugmentation; metagenome; NGS
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Lebiocka, M.; Montusiewicz, A.; Cydzik-Kwiatkowska, A. Effect of Bioaugmentation on Biogas Yields and Kinetics in Anaerobic Digestion of Sewage Sludge. Int. J. Environ. Res. Public Health 2018, 15, 1717.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Int. J. Environ. Res. Public Health EISSN 1660-4601 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top