Nutrient transformations during composting of pig manure with bentonite

被引：300

作者：

Li, Ronghua ^{[1
]}

Wang, Jim J. ^{[2
]}

Zhang, Zengqiang ^{[1
]}

Shen, Feng ^{[1
]}

Zhang, Guangjie ^{[1
]}

Qin, Rui ^{[1
]}

Li, Xiaolong ^{[1
]}

Xiao, Ran ^{[1
]}

机构：

[1] NW A&F Univ, Coll Resources & Environm, Yangling 712100, Shaanxi Provinc, Peoples R China

[2] Louisiana State Univ, Sch Plant Environm & Soil Sci, Ctr Agr, Baton Rouge, LA 70803 USA

来源：

BIORESOURCE TECHNOLOGY | 2012年 / 121卷

关键词：

Compost; Bentonite; Pig manure; Nutrient transformations; Heavy metal availability; COAL FLY-ASH; SEWAGE-SLUDGE; LIME ADDITION; HEAVY-METALS; FOOD WASTE; QUALITY; PERFORMANCE; AMENDMENT; ZEOLITES; MATURITY;

D O I：

10.1016/j.biortech.2012.06.065

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This work aimed to evaluate the influence of different amounts of bentonite on nutrients transformation during pig manure composting process. The results showed that bentonite had no significant effects on compost temperature and pH changes. While, EC, moisture, OM, TN and NO3--N were notably influenced by BT addition. The adding of BT could facilitate OM degradation, increase TKN content and decrease the C/N ratio. Increasing the proportion of bentonite in pig manure compost to reduce extractable heavy metal content is feasible. However, potherb mustard seed Cl decreased with the proportion of added bentonite increasing. The results suggest that a proportion of less than 2.5% bentonite is recommended for addition to pig manure compost, and examining the additive ratio in a comprehensive waste composting project is a worthwhile direction for future research. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：362 / 368

页数：7

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