Journal article
Effects of hydrothermal pre-treatments on Giant reed (Arundo donax) methane yield
Twelve hydrothermal pre-treatment combinations of temperature (150 and 180°C), time (10 and 20min) and acid catalyst (no catalyst; H2SO4 at 2% w/w immediately before steam cooking or in 24-h pre-soaking) were tested to assess their effects on methane yield of Giant reed biomass vs. untreated control.
A batch anaerobic digestion was conducted with 4gVSl−1 at 53°C for 39days. Untreated biomass exhibited a potential CH4 yield of 273mlg−1 VS; the four pre-treatments without acid catalyst achieved a 10%, 7%, 23% and 4% yield gain in the respective temperature/time combinations 150°C/10min, 150°C/20min, 180°C/10min and 180°C/20min.
Conversely, the eight pre-treatments with H2SO4 catalyst incurred a methanogenic inhibition in association with high SO42- concentration in the hydrolysate, known to enhance sulphate reducing bacteria. Furfurals were also detected in the hydrolysate of five strong pre-treatments with H2SO4 catalyst.
| Language: | English |
|---|---|
| Year: | 2013 |
| Pages: | 152-159 |
| ISSN: | 18732976 and 09608524 |
| Types: | Journal article |
| DOI: | 10.1016/j.biortech.2013.08.006 |
| ORCIDs: | Angelidaki, Irini |
Anaerobic digestion Biodegradability Biomass pre-treatments Potential methane yield Steam cooking
5-hydroxymethyl furfural AD AIL ANOVA Anaerobiosis B(0, th) BD Biomass COD FID GC GHG HMF HPLC Hydrolysis Methane Poaceae RID SRB STP TKN TOC TS VFA VS acid insoluble lignin anaerobic digestion analysis of variance biodegradability chemical oxygen demand flame ionisation detector gas chromatographer greenhouse gas high performance liquid chromatography refractive index detector standard temperature and pressure sulphate reducing bacteria theoretical methane potential total kjeldahl nitrogen total organic carbon total solids volatile fatty acid(s) volatile solids
