An Economical Method for Simultaneously Improving Pretreatment and Anaerobic Fermentation Effects on Corn Straw Using Ultra-Low Concentration FeCl<sub>2</sub>
Low pollution, slight corrosion, and low cost are the main challenges in the conversion of biomass to biogas. In this work, based on the whole process optimization of biomass conversion, an effective method using an ultra-low concentration of FeCl<sub>2</sub> was proposed to simultaneous...
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MDPI AG
2020-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/7/1779 |
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| author | Yina Qiao Xuebin Lu Zehao Zhi Shuting Zhang |
| author_facet | Yina Qiao Xuebin Lu Zehao Zhi Shuting Zhang |
| author_sort | Yina Qiao |
| collection | DOAJ |
| description | Low pollution, slight corrosion, and low cost are the main challenges in the conversion of biomass to biogas. In this work, based on the whole process optimization of biomass conversion, an effective method using an ultra-low concentration of FeCl<sub>2</sub> was proposed to simultaneously promote the biochemical reaction and improve the pretreatment effect. The concentration of FeCl<sub>2</sub> in the pretreatment was determined according to the requirements of the minimum amount which led to the optimal performance of the anaerobic system and had economical importance. The effects of FeCl<sub>2</sub> in the pretreatment and anaerobic fermentation were evaluated by comparing with that of distilled water in the production of hydrolysis products and organic acids. The optimal condition was obtained at 180 °C and 10 min with 1 × 10<sup>−5</sup> mol/L FeCl<sub>2</sub> pretreatment. At that condition, hemicellulose achieved a high conversion of 97.6%, and the released xylose reached nearly 95%. At least 77.5% of the organic matter in the solution can be utilized for subsequent fermentation. FeCl<sub>2</sub> pretreatment also accelerated the anaerobic acidification fermentation process and promoted organic acid yields. The work provided a meaningful and economical choice for the conversion technology of biomass to biogas. |
| first_indexed | 2024-03-10T20:37:41Z |
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| id | doaj.art-4a94f0bb5e2e45b79ec774484e93c1c3 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T20:37:41Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-4a94f0bb5e2e45b79ec774484e93c1c32023-11-19T20:55:44ZengMDPI AGEnergies1996-10732020-04-01137177910.3390/en13071779An Economical Method for Simultaneously Improving Pretreatment and Anaerobic Fermentation Effects on Corn Straw Using Ultra-Low Concentration FeCl<sub>2</sub>Yina Qiao0Xuebin Lu1Zehao Zhi2Shuting Zhang3School of Environment Science and Engineering, Tianjin University, Tianjin 300072, ChinaSchool of Environment Science and Engineering, Tianjin University, Tianjin 300072, ChinaTianjin Environmental Protection Technical Development Center, Tianjin 300191, ChinaSchool of Environment Science and Engineering, Tianjin University, Tianjin 300072, ChinaLow pollution, slight corrosion, and low cost are the main challenges in the conversion of biomass to biogas. In this work, based on the whole process optimization of biomass conversion, an effective method using an ultra-low concentration of FeCl<sub>2</sub> was proposed to simultaneously promote the biochemical reaction and improve the pretreatment effect. The concentration of FeCl<sub>2</sub> in the pretreatment was determined according to the requirements of the minimum amount which led to the optimal performance of the anaerobic system and had economical importance. The effects of FeCl<sub>2</sub> in the pretreatment and anaerobic fermentation were evaluated by comparing with that of distilled water in the production of hydrolysis products and organic acids. The optimal condition was obtained at 180 °C and 10 min with 1 × 10<sup>−5</sup> mol/L FeCl<sub>2</sub> pretreatment. At that condition, hemicellulose achieved a high conversion of 97.6%, and the released xylose reached nearly 95%. At least 77.5% of the organic matter in the solution can be utilized for subsequent fermentation. FeCl<sub>2</sub> pretreatment also accelerated the anaerobic acidification fermentation process and promoted organic acid yields. The work provided a meaningful and economical choice for the conversion technology of biomass to biogas.https://www.mdpi.com/1996-1073/13/7/1779FeCl<sub>2</sub>pretreatmentcatalystultra-low concentrationanaerobic fermentationbiogas |
| spellingShingle | Yina Qiao Xuebin Lu Zehao Zhi Shuting Zhang An Economical Method for Simultaneously Improving Pretreatment and Anaerobic Fermentation Effects on Corn Straw Using Ultra-Low Concentration FeCl<sub>2</sub> Energies FeCl<sub>2</sub> pretreatment catalyst ultra-low concentration anaerobic fermentation biogas |
| title | An Economical Method for Simultaneously Improving Pretreatment and Anaerobic Fermentation Effects on Corn Straw Using Ultra-Low Concentration FeCl<sub>2</sub> |
| title_full | An Economical Method for Simultaneously Improving Pretreatment and Anaerobic Fermentation Effects on Corn Straw Using Ultra-Low Concentration FeCl<sub>2</sub> |
| title_fullStr | An Economical Method for Simultaneously Improving Pretreatment and Anaerobic Fermentation Effects on Corn Straw Using Ultra-Low Concentration FeCl<sub>2</sub> |
| title_full_unstemmed | An Economical Method for Simultaneously Improving Pretreatment and Anaerobic Fermentation Effects on Corn Straw Using Ultra-Low Concentration FeCl<sub>2</sub> |
| title_short | An Economical Method for Simultaneously Improving Pretreatment and Anaerobic Fermentation Effects on Corn Straw Using Ultra-Low Concentration FeCl<sub>2</sub> |
| title_sort | economical method for simultaneously improving pretreatment and anaerobic fermentation effects on corn straw using ultra low concentration fecl sub 2 sub |
| topic | FeCl<sub>2</sub> pretreatment catalyst ultra-low concentration anaerobic fermentation biogas |
| url | https://www.mdpi.com/1996-1073/13/7/1779 |
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