Pig slurry acidification and separation techniques affect soil N and C turnover and N2O emissions from solid, liquid and biochar fractions

被引：22
|
作者：
Gomez-Munoz, B. [1 ]
Case, S. D. C. [1 ]
Jensen, L. S. [1 ]
机构：
[1] Univ Copenhagen, Fac Sci, Dept Plant & Environm Sci, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Denmark
来源：
JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2016年 / 168卷
基金：
欧盟第七框架计划;
关键词：
Pig slurry; Acidification; Separation techniques; Biochar; Manure recycling; NITROUS-OXIDE; CHEMICAL-PROPERTIES; MANURE; CARBON; MINERALIZATION; AVAILABILITY; AMMONIA; TEMPERATURE;
D O I：
10.1016/j.jenvman.2015.12.018
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The combined effects of pig slurry acidification, subsequent separation techniques and biochar production from the solid fraction on N mineralisation and N2O and CO2 emissions in soil were investigated in an incubation experiment. Acidification of pig slurry increased N availability from the separated solid fractions in soil, but did not affect N2O and CO2 emissions. However acidification reduced soil N and C turnover from the liquid fraction. The use of more advanced separation techniques (flocculation and drainage > decanting centrifuge > screw press) increased N mineralisation from acidified solid fractions, but also increased N2O and CO2 emissions in soil amended with the liquid fraction. Finally, the biochar production from the solid fraction of pig slurry resulted in a very recalcitrant material, which reduced N and C mineralisation in soil compared to the raw solid fractions. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：236 / 244
页数：9
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