Enzyme activities as indicators of the stabilization of sewage sludges composting with Eisenia foetida

被引：200

作者：

Benitez, E

Nogales, R

Elvira, C

Masciandaro, G

Ceccanti, B

机构：

[1] CNR, Ist Chim Terreno, I-56125 Pisa, Italy

[2] Consejo Superior Invest Cient, Estac Expt Zaidin, Granada 18080, Spain

来源：

BIORESOURCE TECHNOLOGY | 1999年 / 67卷 / 03期

关键词：

sewage sludge; vermicomposting; Eisenia foetida (Sav.); hydrolases; dehydrogenase; water soluble carbon;

D O I：

10.1016/S0960-8524(98)00117-5

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Evolution of earthworm (Eisenia foetida, Savigny) biomass and changes in enzyme activities during 18 weeks of sewage sludge vermicomposting were studied. With time, hydrolase (P-glucosidase, urease, BAA-hydrolysing protease and phosphatase) and dehydrogenase (DH-ase) activities decreased as available organic compounds (water-soluble carbon) decreased. A high correlation among all enzyme activities and between each activity and the water-soluble carbon (WSC) led to the conclusion that both hydrolytic and dehydrogenase activities could be feasible indicators of the state and evolution of the organic matter. The 'potential metabolic index' (DH-ase/WSC) enabled distinguishing between hydrolytic and maturation phases in a sewage sludge vermicomposting process. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：297 / 303

页数：7

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