市政剩余污泥蛋白质碱提取资源化利用工艺研究

doi:10.3976/j.issn.1002-4026.2016.04.012

Abstract

Abstract:

We address protein extraction process of municipal residual sewage sludge.We initially compared acid and alkaline hydrolysis pretreatment methods and optimized the better alkaline hydrolysis method for protein extraction from municipal residual sludge. To acquire optimal extraction condition, we optimized NaOH concentration, solution amount and pretreatment time with response surface method.The optimal protein extraction condition is 21.79 g wet municipal sludge,80 mL NaOH solution (3.68 mol/L), and pretreatment time of 20.32 h at 50 ℃.The optimal protein extraction yield is 8 967±0.4 μg/g dry sludge, 2.33 times of initial extraction yield.

Key words: optimization, municipal sewage sludge waste, protein extraction, alkaline hydrolysis

CLC Number:

X703.1

LIANG Xiao-hui,ZHANG Xiao-dong,SI Hong-yu,ZHAO Yu-xiao, HUA Dong-liang,WANG Bing-lian,YAN Yuan-yuan,YANG Li-jun,LU Yong. Resource utilization of protein alkali extraction from municipal residual sewage sludge[J].SHANDONG SCIENCE, 2016, 29(4): 55-59.

References

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Resource utilization of protein alkali extraction from municipal residual sewage sludge

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