Reduction of isolation period of coal humic acids

• Main Authors: Chen, Claudia Hui Hui, Ahmed, Osumanu Haruna, Nik Ab. Majid, Nik Muhamad, Jalloh, Mohamadu Boyie
• Format: Article
• Language: English
• Published: Science Publications 2009
• Online Access: http://psasir.upm.edu.my/id/eprint/16461/1/ajassp.2009.1327.1330.pdf; http://psasir.upm.edu.my/id/eprint/16461/; http://www.thescipub.com/abstract/?doi=ajassp.2009.1327.1330

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...