Journal article
Nitrogen mineralisation and greenhouse gas emission from the soil application of sludge from reed bed mineralisation systems
A sludge treatment reed bed system (STRB) is a technology used for dewatering and stabilising sewage sludge via assisted biological mineralisation, which creates a sludge residue suitable for use as fertiliser on agricultural land. We evaluated the effect of sludge residue storage time (stabilisation time) for three STRBs on soil N mineralisation and CO2 and N2O emissions in soil.
The experiment revealed that the N mineralisation rate and emissions of CO2 and N2O decreased as a function of treatment time in the STRBs. Mixed sludge residue (sludge residue subjected to different treatment times) for the three STRBs resulted in N mineralisation rates similar to the sludge residue subjected to a shorter treatment time but lower N2O emissions similar to the values of the older sludge residue.
This finding reveals that combining fresh and more stabilised sludge residue ensures high N availability and reduces N2O emissions when applied to land.
Language: | English |
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Year: | 2017 |
Pages: | 59-67 |
ISSN: | 10958630 and 03014797 |
Types: | Journal article |
DOI: | 10.1016/j.jenvman.2017.07.042 |
ORCIDs: | Scheutz, Charlotte , 0000-0001-6611-5845 , 0000-0002-8685-7632 , 0000-0002-2233-5122 and 0000-0002-1446-2084 |
C mineralisation Mineralisation systems N mineralisation N(2)O and CO(2) emissions Recycling of organic waste SDG 2 - Zero Hunger Sewage sludge treatment
Agriculture Fertilizers Journal Article N2O and CO2 emissions Nitrogen Sewage Soil