Improving Guidelines for the Plant Available Nitrogen Value of Biosolids from Wastewater Treatment
It is important to accurately quantify the amount of plant available nitrogen (PAN) in land applied biosolids to achievemaximum crop production, yet reduce the risk of pollution through nitrate leaching and gaseous losses following excess applications or incorrect management. For this reason, biosol...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
DEStech Publications, Inc.
2010
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/3989 |
| _version_ | 1848744387614343168 |
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| author | Rigby, Hannah Pritchard, Deborah Collins, David Walton, K. Allen, D. Penney, N. |
| author_facet | Rigby, Hannah Pritchard, Deborah Collins, David Walton, K. Allen, D. Penney, N. |
| author_sort | Rigby, Hannah |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | It is important to accurately quantify the amount of plant available nitrogen (PAN) in land applied biosolids to achievemaximum crop production, yet reduce the risk of pollution through nitrate leaching and gaseous losses following excess applications or incorrect management. For this reason, biosolids application rates are frequently determined by the PAN content based on the mineralisable portion of the organic nitrogen (N). The findings of this field experiment, conducted in an acidic sand under aMediterranean-type climate inWestern Australia, demonstrate that the PAN of biosolids relative to an inorganic source of N is dependent on the treatment method of the biosolids, with greater PAN from lime amended biosolids (65.1%) and alum-dosed biosolids (63.4%) in comparison to dewatered biosolids cake (39.4%). The amount of organic N that becomes available in the first season may be 2–3 times greater than the current estimate of 20% used to calculate application rates inWestern Australia. It is suggested that current biosolids guidelines in Australia require further investigation to maximise crop yield andeconomic benefits of biosolids application and prevent pollution from leaching of excess mineral N. |
| first_indexed | 2025-11-14T06:00:40Z |
| format | Journal Article |
| id | curtin-20.500.11937-3989 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T06:00:40Z |
| publishDate | 2010 |
| publisher | DEStech Publications, Inc. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-39892017-01-30T10:35:42Z Improving Guidelines for the Plant Available Nitrogen Value of Biosolids from Wastewater Treatment Rigby, Hannah Pritchard, Deborah Collins, David Walton, K. Allen, D. Penney, N. plant available nitrogen biosolids nitrogen mineralisation alum-sludge lime-amended biosolids It is important to accurately quantify the amount of plant available nitrogen (PAN) in land applied biosolids to achievemaximum crop production, yet reduce the risk of pollution through nitrate leaching and gaseous losses following excess applications or incorrect management. For this reason, biosolids application rates are frequently determined by the PAN content based on the mineralisable portion of the organic nitrogen (N). The findings of this field experiment, conducted in an acidic sand under aMediterranean-type climate inWestern Australia, demonstrate that the PAN of biosolids relative to an inorganic source of N is dependent on the treatment method of the biosolids, with greater PAN from lime amended biosolids (65.1%) and alum-dosed biosolids (63.4%) in comparison to dewatered biosolids cake (39.4%). The amount of organic N that becomes available in the first season may be 2–3 times greater than the current estimate of 20% used to calculate application rates inWestern Australia. It is suggested that current biosolids guidelines in Australia require further investigation to maximise crop yield andeconomic benefits of biosolids application and prevent pollution from leaching of excess mineral N. 2010 Journal Article http://hdl.handle.net/20.500.11937/3989 DEStech Publications, Inc. restricted |
| spellingShingle | plant available nitrogen biosolids nitrogen mineralisation alum-sludge lime-amended biosolids Rigby, Hannah Pritchard, Deborah Collins, David Walton, K. Allen, D. Penney, N. Improving Guidelines for the Plant Available Nitrogen Value of Biosolids from Wastewater Treatment |
| title | Improving Guidelines for the Plant Available Nitrogen Value of Biosolids from Wastewater Treatment |
| title_full | Improving Guidelines for the Plant Available Nitrogen Value of Biosolids from Wastewater Treatment |
| title_fullStr | Improving Guidelines for the Plant Available Nitrogen Value of Biosolids from Wastewater Treatment |
| title_full_unstemmed | Improving Guidelines for the Plant Available Nitrogen Value of Biosolids from Wastewater Treatment |
| title_short | Improving Guidelines for the Plant Available Nitrogen Value of Biosolids from Wastewater Treatment |
| title_sort | improving guidelines for the plant available nitrogen value of biosolids from wastewater treatment |
| topic | plant available nitrogen biosolids nitrogen mineralisation alum-sludge lime-amended biosolids |
| url | http://hdl.handle.net/20.500.11937/3989 |