Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (5): 71-75,83.

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Effect of Pretreatment on Mixed Fermentation of Paper Mill Sludge and Food Waste

Lin Yun-qin1,2  Wu Shu-bin2  Liang Jia-jin1   

  1. 1.Key Laboratory of Soil Environment and Waste Reuse in Agriculture of Guangdong High Education Institutions,South China Agricultural University,Guangzhou 510642,Guangdong,China;2. State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2012-01-05 Online:2012-05-25 Published:2012-03-31
  • Contact: 林云琴(1977-) ，女，博士，讲师，主要从事固体废物资源化利用研究． E-mail:yqlin@ scau.edu.cn
  • About author:林云琴(1977-) ，女，博士，讲师，主要从事固体废物资源化利用研究．
  • Supported by:

    国家自然科学基金资助项目( 51108195) ; 教育部高等学校博士学科点专项基金资助项目( 20114404120021) ; 广州市珠江科技新星专项( 0501) ; 华南理工大学制浆造纸工程国家重点实验室开放基金资助项目( 201116)

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Abstract:

In order to reveal the effect of pretreatment on the organics hydrolysis and biogas production in the hydrogen-methane co-production process,a mesophilic-thermophilic anaerobic co-digestion of paper mill sludge ( PS) and food waste ( FW) pretreated with H2SO4 or NaOH in batch reactors was carried out,and the mixed fermentation performances of paper mill sludge and food waste pretreated with H2SO4 or NaOH at different concentrations were investigated. The results show that the pretreatment enhances the hydrolysis of organics and makes the macromolecular organic compounds degrade into micromolecular particles,and that the pretreatment obviously increases the hydrogen yield,especially the pretreatment with NaOH at the dosage of 10% ( calculated on the basis of the mass of total solid),which results in a hydrogen yield increment of 50.20% ( as compared with the check reactor) and a VS ( Volatile Solids) removal of 16.06%. However,the pretreatment has no obvious effect on the methane production after the hydrogen fermentation,concretely,both the methane yield and the peak total VS removal are close to or less than that in the check reactor.

Key words: fermentation performance, paper mill sludge, food waste, pretreatment, hydrogen, methane