厨余垃圾热水解-酶解增溶及其利用技术研究
Journal: Ecological Environment and Protection DOI: 10.12238/eep.v8i3.2618
Abstract
本研究采用热水解-酶解组合技术处理厨余垃圾,促进有机组分从固相溶出,分析预处理对厨余垃圾厌氧产氢的影响。结果表明,热水解160℃、45min为最适增溶反应条件,水解液中SCOD、总糖浓度从96g/L和78.14g/L提高到123.10g/L和96.66g/L。挥发性脂肪酸、还原糖、可溶性蛋白质浓度提高率分别为47.4%、48.8%和21.8%。热水解后的厨余浆液进行酶解,底物质量分数为10%时,糖化效果最好。复合酶最适添加量为100u/gTS,α-淀粉酶与糖化酶为1:2时,溶液中总糖和还原糖浓度为74.59g/L和42.96g/L,提高率分别为23.30%和91.4%。经热水解-酶解预处理后固相中淀粉含量从43.1%下降到17.7%。经梯度酶解后,固渣中粗蛋白从43.7%下降到32.8%。热水解-酶解预处理对上清液溶液中的基团数量和峰种类无明显影响。预处理使得厨余垃圾厌氧产氢量提高19.7%。
Keywords
厨余垃圾；热水解；酶解；增溶；厌氧消化
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[12] LI Y,JIN Y,LI J,et al.Effects of thermal pretreatment on the biomethane yield and hydrolysis rate of kitchen waste[J].Applied Energy,2016,172:47-58.
[13] LI P,XIE Y,ZENG Y,et al.Bioconversion of Welan Gum from Kitchen Waste by a Two-Step Enzymatic Hydrolysis Pretre atment[J].Applied Biochemistry and Biotechnology, 2017,183 (3):820-832.
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[19] H O Lowry, J N Rosebrough, L A Farr,et al.福林酚试剂法测定蛋白质[J].食品与药品,2011,13(03):147-151.
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[23] 邱卫华,修涵,赵芸卿,等.不同物质组成餐厨垃圾的多酶协同酶解研究[J].环境工程,2023,41(S1):383-387+424.
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