Enhanced Anaerobic Mixed Culture Fermentation with Anion-Exchange Resin for Caproate Production
Abstract
:1. Introduction
2. Materials and Methods
2.1. Experimental Materials for Resin Screening and Fermentation
2.2. Comparison and Selection of Optimal Resin
2.3. Enhancement of Caproate Fermentation with Anion-Exchange Resin Adsorption
2.4. Chemical Analyses
3. Results and Discussion
3.1. Optimal Resin for Enhancement of Caproate Production
3.2. Optimal Desorption Condition and Reusability of D201
3.3. Enhanced Caproate Fermentation with Anion Exchange
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Property | Resin | |||
---|---|---|---|---|
D201 | D202 | D301R | D301G | |
Type | Strongly basic | Strongly basic II | Weakly basic | Weakly basic |
Matrix | Styrene-divinylbenzene (DVB) | Styrene-DVB | Styrene-DVB | Styrene-DVB |
Functional group | Quaternary ammonium | Dimethyl ethanolamine | Tertiary amine | Tertiary amine |
Ion form as shipped | Cl− | Cl− | Cl− | Cl− |
Grain diameter (mm) | 0.4–0.7 | 0.42–0.6 | 0.4–0.7 | 0.65–0.72 |
Elution Factor | c Desorption Effeciency | |||
---|---|---|---|---|
a Temperature (°C) | 5 | 88.10 ± 0.36 | 81.66 ± 0.33 | 65.79 ± 0.49 |
20 | 96.90 ± 0.29 | 87.74 ± 0.21 | 89.04 ± 0.12 | |
30 | 95.05 ± 0.23 | 86.75 ± 0.29 | 88.25 ± 0.29 | |
40 | 95.17 ± 0.19 | 86.12 ± 0.22 | 88.18 ± 0.13 | |
b NaOH concentration (M) | 0.5 | 85.20 ± 0.10 | 80.17 ± 0.09 | 78.65 ± 0.32 |
1.5 | 99.84 ± 0.16 | 94.75 ± 0.13 | 95.74 ± 0.12 | |
2.0 | 99.80 ± 0.26 | 95.01 ± 0.33 | 95.94 ± 0.21 | |
2.5 | 99.71 ± 0.35 | 97.30 ± 0.16 | 96.12 ± 0.20 |
Adsorption/Desorption Operation | a Qacetate (mg/g) | Qbutyrate (mg/g) | Qcaproate (mg/g) | Desorption Efficiency (%) |
---|---|---|---|---|
The first operation at the 67th day | 2.13 ± 0.02 | 10.87 ± 0.09 | 60.17 ± 0.17 | 93.4 ± 0.27 |
The second operation at the 80th day | 4.13 ± 0.07 | 15.46 ± 0.10 | 59.36 ± 0.31 | 94.0 ± 0.31 |
The third operation at the 89th day | 3.60 ± 0.03 | 19.24 ± 0.29 | 56.99 ± 0.29 | 95.1 ± 0.22 |
The fourth operation at the 120th day | 0.74 ± 0.02 | 28.25 ± 0.23 | 55.13 ± 0.25 | 93.5 ± 0.13 |
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Yu, J.; Liao, J.; Huang, Z.; Wu, P.; Zhao, M.; Liu, C.; Ruan, W. Enhanced Anaerobic Mixed Culture Fermentation with Anion-Exchange Resin for Caproate Production. Processes 2019, 7, 404. https://doi.org/10.3390/pr7070404
Yu J, Liao J, Huang Z, Wu P, Zhao M, Liu C, Ruan W. Enhanced Anaerobic Mixed Culture Fermentation with Anion-Exchange Resin for Caproate Production. Processes. 2019; 7(7):404. https://doi.org/10.3390/pr7070404
Chicago/Turabian StyleYu, Jiangnan, Jialin Liao, Zhenxing Huang, Peng Wu, Mingxing Zhao, Chunmei Liu, and Wenquan Ruan. 2019. "Enhanced Anaerobic Mixed Culture Fermentation with Anion-Exchange Resin for Caproate Production" Processes 7, no. 7: 404. https://doi.org/10.3390/pr7070404