Abstract
The subject of this paper was to study the effect of rapid batch decompression on hydrolysate quality and on biogas yield after the hydrothermal pretreatment of wheat straw. An aqueous batch containing 5 mass % total solids of wheat straw was thermally and thermally-expansionary treated in parallel at the process temperature of 170-200°C and the residence time of 0-60 min. An analysis of the thermal and thermal-expansionary hydrolysate provided identical results in the dependences and values of chemical oxygen demand, acidities, and glucose yields of both treatments based on severity factors including the combined effects of temperature and residence time. Increases in the methane content of 33 % for thermally and of 34 % for thermally-expansionary treated wheat straw were reached in comparison to the methane yield from an untreated sample. This means that the polysaccharide cell wall was dissolved because of the high process temperature and residence time. From this it follows that all its nutrients were subsequently washed out of the cell into liquid where they caused changes in its chemical oxygen demand, glucose content, and acidities. There was therefore no rapid decompression effect on the hydrothermally treated wheat straw.
References
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Institute of Chemistry, Slovak Academy of Sciences
Articles in the same Issue
- Catalysis in glycerol: a survey of recent advances
- A rapid LC-MS/MS method for determination of urinary EtG and application to a cut-off limit study
- Validated chiral chromatographic methods for clopidogrel bisulphate and its related substances in bulk drug and pharmaceutical dosage forms
- Effect of SO2 on SCR activity of MnOx/PG catalysts at low temperature
- Preparation of Pd/Al2O3@silicalite-1 core–shell beads and their application to hydrogenation reactions
- Effect of rapid batch decompression on hydrolysate quality after hydrothermal pretreatment of wheat straw
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- Synthesis and evaluation of a novel hydrophobically associating polymer based on acrylamide for enhanced oil recovery
- Synthesis of cardanol-based photo-active SET-LRP initiator and its application to preparation of UV-cured resin
- Preparation, characterization and ion adsorption properties of functionalized polystyrene modified with 1,4-phenylene diisocyanate and diethylenetriamine
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Articles in the same Issue
- Catalysis in glycerol: a survey of recent advances
- A rapid LC-MS/MS method for determination of urinary EtG and application to a cut-off limit study
- Validated chiral chromatographic methods for clopidogrel bisulphate and its related substances in bulk drug and pharmaceutical dosage forms
- Effect of SO2 on SCR activity of MnOx/PG catalysts at low temperature
- Preparation of Pd/Al2O3@silicalite-1 core–shell beads and their application to hydrogenation reactions
- Effect of rapid batch decompression on hydrolysate quality after hydrothermal pretreatment of wheat straw
- Anthocyanins profile, total phenolics and antioxidant activity of two Romanian red grape varieties: Feteascǎ neagrǎ and Bǎbeascǎ neagrǎ (Vitis vinifera)
- Polyphenols, radical scavenger activity, short-chain organic acids and heavy metals of several plants extracts from “Bucharest Delta”
- Reaction of anhydrous zinc chloride with 2,3-thiophenedicarbaldehyde bis(semicarbazone) (2,3BSTCH2) and bis(thiosemicarbazone) (2,3BTSTCH2): Crystal structure of {[C6H5N2S]+[ZnCl3(C6H4N2S)]−} complex
- Synthesis and evaluation of a novel hydrophobically associating polymer based on acrylamide for enhanced oil recovery
- Synthesis of cardanol-based photo-active SET-LRP initiator and its application to preparation of UV-cured resin
- Preparation, characterization and ion adsorption properties of functionalized polystyrene modified with 1,4-phenylene diisocyanate and diethylenetriamine
- Synthesis of lanthanide-based SBA-15 mesoporous hybrids by a novel route
- Comparative ESI FT-MS and MALDI-TOF structural analyses of representative human N-linked glycans