Journal of South China University of Technology(Natural Science) >

2017 , Vol. 45 >Issue 11: 120 - 125

DOI: https://doi.org/10.3969/j.issn.1000-565X.2017.11.017

Environmental Science & Technology

Extraction of Caramel Pigment from High-Concentration Yeast Wastewater and its Influence on Pollution Load

  • LI You-Ming ,
  • GE Guang-De ,
  • HOU Yi ,
  • HU Song-Qing ,
  • FANG Xue-Xing
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  • 1.State Key Laboratory of Pulp and Paper Engineering,South China University of Technology Guangzhou 510640,Guangdong,China; 2.School of Food Science and Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
李友明(1957-)，男，教授，博士生导师，主要从事制浆造纸清洁生产技术、造纸化学品等的研究． E-mail:ymli3@scut．edu．cn

Received date: 2016-12-14

  Revised date: 2017-05-11

  Online published: 2017-10-01

Supported by

Supported by the National Natural Science Foundation of China(21476091) and the Science and Technology Planning Project of Guangdong Province，China(2015A020215009)

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Abstract

In order to determine the effect of the caramel pigment on the pollution load in high-concentration yeast wastewater,the caramel pigment in the high-concentration yeast wastewater was extracted by means of ultrafiltration membrane separation.Then,the properties of the caramel pigment were investigated,and the influence of the ex- traction on both the pollution load and the subsequent anaerobic treatment was also explored.The results show that the caramel pigment in the high-concentration yeast wastewater can be extracted for the utilization of resource,with an extraction ratio of 15g/L and an appearance quality which is up to the national standard.After the extraction,the CODCr and color of the wastewater and the pollution load significantly decrease,while the biodegradability of CODCr /BOD5 increases from 0. 33 to 0. 51,and thus the efficiency of the subsequent anaerobic treatment is greatly improved.The research results can provide a new technical route for the resource utilization and effective treatment of high-concentration fermentation wastewater.

Key words： yeast wastewater; caramel color; ultrafiltration membrane; anaerobic treatment process; pollution load

Cite this article

LI You-Ming , GE Guang-De , HOU Yi , HU Song-Qing , FANG Xue-Xing . Extraction of Caramel Pigment from High-Concentration Yeast Wastewater and its Influence on Pollution Load[J]. Journal of South China University of Technology(Natural Science), 2017 , 45(11) : 120 -125 . DOI: 10.3969/j.issn.1000-565X.2017.11.017

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