The effect of organic loading rate and retention time on hydrogen production from a methanogenic CSTR
Research output: Contribution to journal › Article › Scientific › peer-review
Details
| Original language | English |
|---|---|
| Pages (from-to) | 8952-8957 |
| Number of pages | 6 |
| Journal | Bioresource Technology |
| Volume | 102 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - Oct 2011 |
| Publication type | A1 Journal article-refereed |
Abstract
The possibility of shifting a methanogenic process for hydrogen production by changing the process parameters viz., organic loading rate (OLR) and hydraulic retention time (HRT) was evaluated. At first, two parallel semi-continuously fed continuously stirred tank reactors (CSTR) were operated as methanogenic reactors (M1 and M2) for 78days. Results showed that a methane yield of 198-218L/kg volatile solids fed (VS fed) was obtained when fed with grass silage at an OLR of 2kgVS/m 3/d and HRT of 30days. After 78days of operation, hydrogen production was induced in M2 by increasing the OLR from 2 to 10kgVS/m 3/d and shortening the HRT from 30 to 6days. The highest H 2 yield of 42L/kgVS fed was obtained with a maximum H 2 content of 24%. The present results thus demonstrate that methanogenic process can be shifted towards hydrogen production by increasing the OLR and decreasing HRT.
ASJC Scopus subject areas
Keywords
- Grass silage, Hydrogen, Methane, Shifting, VFA