Development of a new cleaner production process for cassava ethanol

Ke Wang; Xinchao Yang; Xidong Ren; Jianhua Zhang; Zhonggui Mao

doi:10.1016/j.cjche.2016.10.002

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Development of a new cleaner production process for cassava ethanol

Biotechnology and Bioengineering | Updated：2026-01-06

- Development of a new cleaner production process for cassava ethanol
- Chinese Journal of Chemical Engineering Vol. 25, Issue 4, Pages: 493-498(2017)
- Affiliations：
  
  The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University,Wuxi,China,214122
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2016.10.002
  CLC：
- Published：2017
- Accepted：
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Ke Wang, Xinchao Yang, Xidong Ren, Jianhua Zhang, Zhonggui Mao. Development of a new cleaner production process for cassava ethanol[J]. , 2017, 25(4): 493-498.
DOI：

Ke Wang, Xinchao Yang, Xidong Ren, Jianhua Zhang, Zhonggui Mao. Development of a new cleaner production process for cassava ethanol[J]. , 2017, 25(4): 493-498. DOI： 10.1016/j.cjche.2016.10.002.

摘要

Abstract

A new cleaner production process for cassava ethanol has been developed

in which the thin stillage by-product was treated initially by anaerobic digestion

and the digestate further processed by hydrogen-form cation exchange resin before being recycled as process water to make mash for the next ethanol fermentation batch.Thus wastewater was eliminated and freshwater and energy consumption was significantly reduced.To evaluate the new process

ten consecutive batches of ethanol fermentation and anaerobic digestion at lab scale were carried out.Average ethanol production in the recycling batches was 11.43%(v/v) which was similar to the first batch

where deionized (DI) water was used as process water.The chemical oxygen demand (COD) removal rate reached 98% and the methane yield was 322 ml per gram of COD removed

suggesting an efficient and stable operation of the anaerobic digestion.In conclusion

the application of the new process can contribute to sustainable development of the cassava ethanol industry.

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