Temperature control as key factor for optimal biohydrogen production from thermomechanical pulping wastewater
| Autor: | Piet N.L. Lens, Estefania Porca, Gavin Collins, Paolo Dessì, Aino-Maija Lakaniemi |
|---|---|
| Přispěvatelé: | Tampere University, Chemistry and Bioengineering, Research group: Bio- and Circular Economy, Research group: Industrial Bioengineering and Applied Organic Chemistry |
| Jazyk: | angličtina |
| Předmět: |
Environmental Engineering
Hydrogen Biomedical Engineering chemistry.chemical_element Bioengineering 02 engineering and technology 010501 environmental sciences engineering.material 01 natural sciences Biohydrogen 219 Environmental biotechnology 0105 earth and related environmental sciences Hydrogen production Pulp (paper) Substrate (chemistry) Dark fermentation 021001 nanoscience & nanotechnology Pulp and paper industry 6. Clean water chemistry Microbial population biology Wastewater 13. Climate action engineering 0210 nano-technology Biotechnology |
| Zdroj: | Biochemical Engineering Journal |
| ISSN: | 1369-703X |
| DOI: | 10.1016/j.bej.2018.05.027 |
| Popis: | This study evaluates the use of non-pretreated thermo-mechanical pulping (TMP) wastewater as a potential substrate for hydrogen production by dark fermentation. Batch incubations were conducted in a temperature gradient incubator at temperatures ranging from 37 to 80 °C, using an inoculum from a thermophilic, xylose-fed, hydrogen-producing fluidised bed reactor. The aim was to assess the short-term response of the microbial communities to the different temperatures with respect to both hydrogen yield and composition of the active microbial community. High throughput sequencing (MiSeq) of the reversely transcribed 16S rRNA showed that Thermoanaerobacterium sp. dominated the active microbial community at 70 °C, resulting in the highest hydrogen yield of 3.6 (±0.1) mmol H2 g−1 CODtot supplied. Lower hydrogen yields were obtained at the temperature range from 37 to 65 °C, likely due to consumption of the produced hydrogen by homoacetogenesis. No hydrogen production was detected at temperatures above 70 °C. Thermomechanical pulping wastewaters are released at high temperatures (50–80 °C), and thus dark fermentation at 70 °C could be sustained using the heat produced by the pulp and paper plant itself without any requirement for external heating. submittedVersion acceptedVersion |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|