Application of immobilized and granular dried anaerobic biomass for stabilizing and increasing anaerobic bio-systems tolerance for high organic loads and phenol shocks

Bioresource Technology
Nedal MassalhaIsam Sabbah

Abstract

This study focuses on the stability and tolerance of continuous-flow bioreactors inoculated with anaerobic methanogens in three different configurations: (R1) dried granular biomass immobilized in PAC-enriched hydrophilic polyurethane foam, (R2) dried granular biomass, and (R3) wet granular biomass. These systems were tested under two different organic loading rates (OLR) of 6.25 and 10.94 (gCOD/(Lreactor∗d)), using a glucose-based synthetic mixture. The effect of an instantaneous shock load of phenol (5g/L for three days), and of phenol inclusion in the feed (0.5g/L) were also tested. At the lower OLR, all reactors performed similarly, however, increasing the OLR lead to a significant biomass washout and failure of R3. Biomass in R1 was more tolerant to phenol shock load than R2, though activity was recovered in both systems after about one month. PAC provided protection and shortened the adaptation time for 0.5g/L phenol that continuously was fed.

References

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Citations

May 28, 2016·Bioresource Technology·Céline MadigouOlivier Chapleur
Jul 1, 2020·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Katie Baransi-KarkabyIsam Sabbah
Feb 19, 2021·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Ke ZhangLin Li
Jan 24, 2020·Environmental Science & Technology·Nedal MassalhaShengkun Dong

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Bioreactors (ASM)

Bioreactors are important devices or systems that utilize living cells or enzymes for a chemical process. These devices carefully control and monitor the environment factors such as pH, nutrients level, and temperature, which can affect the yield in a given process. Discover the latest research here.