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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/wer.1260
|2 doi
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|a pubmed25n1008.xml
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|a (NLM)31642152
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|e rakwb
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|a eng
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|a Oladeji, Olawale
|e verfasserin
|4 aut
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|a Nitrogen release and plant available nitrogen of composted and un-composted biosolids
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 03.04.2020
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|a Date Revised 03.04.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2019 Water Environment Federation.
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|a The nitrogen (N) release from composted and un-composted biosolids and plant available N (PAN) of the biosolids were quantified to evaluate if composting can contribute to stabilize biosolids N and reduce the nitrate ( NO 3 - ) leaching potential in biosolids-amended soil. Biosolids were composted at >55°C for 21 days after mixing the biosolids with yard waste at 1:1 (w/w) ratio. In the N release study, we installed field lysimeters filled with soil (sand and clay) amended with composted and un-composted biosolids at two rates (30 and 150 dry Mg/ha) and measured the inorganic N in leachate after each rainfall and soil inorganic N monthly. The N released from composted biosolids during the two-year study period were lower (6% of organic N added for clay and 11% for sandy loam soil) as compared to un-composted biosolids (14% of organic N added for clay and 21% for sandy soils). Composted biosolids showed a lower N release rate constant k value of 0.0014 and 0.0027 month-1 for clay and sandy soil, respectively, compared to corresponding values of 0.0035 and 0.0068 month-1 for un-composted biosolids. We used greenhouse bioassay with corn (Zea mays), ryegrass (Lolium perenne), and Miscanthus (Miscanthus giganteus) as test plants grown for six months with reference to N chemical fertilizer ranging from 0, 75, 150 to 300 kg N/ha to evaluate the PAN of the biosolids. Based on our study, plant growth was not affected by using either composted or un-composted biosolids but the PAN was lower in composted biosolids (4.0%-5.9%) than un-composted biosolids (11.4%-13.6%). Composting results in higher N-retention efficiency in biosolids and composted biosolids are a valuable source of N to support the plant growth with lower N released to the environment. Thus, the potential of N leaching would still be low in the situations where a high rate of biosolids needs to be applied for land reclamation or landscaping soil reconstruction. PRACTITIONER POINTS: Composting enhances N-retention efficiency in biosolids and composted biosolids are a valuable source of N to support the plant growth with lower N released to the environment. Potential of N leaching would still be low in the situations where a high rate of biosolids needs to be applied for land reclamation or landscaping soil reconstruction. N released from composted and un-composted biosolids can be adequately described by first-order kinetic model
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|a Journal Article
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|a bioassay
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|a lysimeters
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| 650 |
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4 |
|a mineralization kinetics
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|a nitrates leaching
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|a nitrogen mineralization
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| 650 |
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|a plant available nitrogen
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| 650 |
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|a Biosolids
|2 NLM
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| 650 |
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|a Fertilizers
|2 NLM
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| 650 |
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|a Soil
|2 NLM
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| 650 |
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|a Nitrogen
|2 NLM
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| 650 |
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|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Tian, Guanglong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lindo, Pauline
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kumar, Kuldip
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cox, Albert
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hundal, Lakhwinder
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Heng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Podczerwinski, Edward
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Water environment research : a research publication of the Water Environment Federation
|d 1998
|g 92(2020), 4 vom: 02. Apr., Seite 631-640
|w (DE-627)NLM098214292
|x 1554-7531
|7 nnas
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| 773 |
1 |
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|g volume:92
|g year:2020
|g number:4
|g day:02
|g month:04
|g pages:631-640
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|u http://dx.doi.org/10.1002/wer.1260
|3 Volltext
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