Effects of extraction and fractionation time on the yield of compost humic acids
The yield of humic acids (HA) partly depends on the period of isolation (extraction and fractionation), extractants used, and conditions such as temperature, pre-treatments, and compost:extractant ratios of extraction. This study was conducted to investigate whether a relationship could be separatel...
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| Format: | Article |
| Language: | English English |
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The Royal Society of New Zealand
2005
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| Online Access: | http://psasir.upm.edu.my/id/eprint/18559/ http://psasir.upm.edu.my/id/eprint/18559/1/Effects%20of%20extraction%20and%20fractionation%20time%20on%20the%20yield%20of%20compost%20humic%20acids.pdf |
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| author | Ahmed, Osumanu Haruna Mohd Hanif, Ahmad Husni Abd Rahim, Anuar Musa, Mohamed Hanafi |
| author_facet | Ahmed, Osumanu Haruna Mohd Hanif, Ahmad Husni Abd Rahim, Anuar Musa, Mohamed Hanafi |
| author_sort | Ahmed, Osumanu Haruna |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The yield of humic acids (HA) partly depends on the period of isolation (extraction and fractionation), extractants used, and conditions such as temperature, pre-treatments, and compost:extractant ratios of extraction. This study was conducted to investigate whether a relationship could be separately established between extraction time, fractionation time, and the yield of HA from composted pineapple (Ananas comosus) leaves, as well as the relationship between both variables (extraction time and fractionation time) on the yield of HA from this compost. Standard procedures (with some modifications) using 0.1M NaOH were used to isolate HA from compost. Although there was a quadratic relationship between extraction time and HA yield, there was no relationship between fractionation time and HA yield. This observation enables the isolation of HA of compost within 24 h or less instead of the existing average time of 48 h, hence helping in facilitating the idea of producing potassium humate as a foliar potassium fertiliser from composted pineapple leaves and related crop residues instead of open burning, a practice that has undesirable environmental effects. © The Royal Society of New Zealand 2005. |
| first_indexed | 2025-11-15T08:16:39Z |
| format | Article |
| id | upm-18559 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T08:16:39Z |
| publishDate | 2005 |
| publisher | The Royal Society of New Zealand |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-185592015-12-09T03:36:45Z http://psasir.upm.edu.my/id/eprint/18559/ Effects of extraction and fractionation time on the yield of compost humic acids Ahmed, Osumanu Haruna Mohd Hanif, Ahmad Husni Abd Rahim, Anuar Musa, Mohamed Hanafi The yield of humic acids (HA) partly depends on the period of isolation (extraction and fractionation), extractants used, and conditions such as temperature, pre-treatments, and compost:extractant ratios of extraction. This study was conducted to investigate whether a relationship could be separately established between extraction time, fractionation time, and the yield of HA from composted pineapple (Ananas comosus) leaves, as well as the relationship between both variables (extraction time and fractionation time) on the yield of HA from this compost. Standard procedures (with some modifications) using 0.1M NaOH were used to isolate HA from compost. Although there was a quadratic relationship between extraction time and HA yield, there was no relationship between fractionation time and HA yield. This observation enables the isolation of HA of compost within 24 h or less instead of the existing average time of 48 h, hence helping in facilitating the idea of producing potassium humate as a foliar potassium fertiliser from composted pineapple leaves and related crop residues instead of open burning, a practice that has undesirable environmental effects. © The Royal Society of New Zealand 2005. The Royal Society of New Zealand 2005-06 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/18559/1/Effects%20of%20extraction%20and%20fractionation%20time%20on%20the%20yield%20of%20compost%20humic%20acids.pdf Ahmed, Osumanu Haruna and Mohd Hanif, Ahmad Husni and Abd Rahim, Anuar and Musa, Mohamed Hanafi (2005) Effects of extraction and fractionation time on the yield of compost humic acids. New Zealand Journal of Crop and Horticultural Science, 33 (2). pp. 107-110. ISSN 0114-0671 http://dx.doi.org/10.1080/01140671.2005.9514338 Pineapple - Residues Humic acid - Analysis Extraction (Chemistry) doi:10.1080/01140671.2005.9514338 English |
| spellingShingle | Pineapple - Residues Humic acid - Analysis Extraction (Chemistry) Ahmed, Osumanu Haruna Mohd Hanif, Ahmad Husni Abd Rahim, Anuar Musa, Mohamed Hanafi Effects of extraction and fractionation time on the yield of compost humic acids |
| title | Effects of extraction and fractionation time on the yield of compost humic acids |
| title_full | Effects of extraction and fractionation time on the yield of compost humic acids |
| title_fullStr | Effects of extraction and fractionation time on the yield of compost humic acids |
| title_full_unstemmed | Effects of extraction and fractionation time on the yield of compost humic acids |
| title_short | Effects of extraction and fractionation time on the yield of compost humic acids |
| title_sort | effects of extraction and fractionation time on the yield of compost humic acids |
| topic | Pineapple - Residues Humic acid - Analysis Extraction (Chemistry) |
| url | http://psasir.upm.edu.my/id/eprint/18559/ http://psasir.upm.edu.my/id/eprint/18559/ http://psasir.upm.edu.my/id/eprint/18559/ http://psasir.upm.edu.my/id/eprint/18559/1/Effects%20of%20extraction%20and%20fractionation%20time%20on%20the%20yield%20of%20compost%20humic%20acids.pdf |