Reduction of isolation period of coal humic acids
Problem statement: The isolation of Humic Acids (HA) from coal is laborious, costly and time consuming. The extraction and fractionation periods of HA vary from 4 h to 7 days. Fractionation period ranges from 12-24 h. However, most studies use 24 h as extraction period and also 24 h as fractionation...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Science Publications
2009
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| Online Access: | http://psasir.upm.edu.my/id/eprint/16461/1/ajassp.2009.1327.1330.pdf |