Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5360729 | Applied Surface Science | 2008 | 6 Pages |
Abstract
It has been synthesized Mg/Al layered double hydroxide anionic clay (Mg/Al hydrotalcite) through direct precipitation by adding 0.5 M NaOH solution into a mixed solution containing Mg(NO3)2 and Al(NO3)3 with molar ratio of 0.1:0.05 until the medium acidity reached pH 10.1. The synthesized Mg/Al hydrotalcite was then utilized to remove dissolved humic acid in aqueous medium. The humic acid was isolated from peat soil taken in Gambut District, South Kalimantan, Indonesia using the recommended procedure of IHSS (International Humic Substances Society). The removal of humic acid was mostly occurred through simple sorption process without accompanied by significant intercalation. The sorption was optimum at pH 9.0, with the first order rate constant, capacity and energy of sorption were 5.50 Ã 10â3 minâ1, 0.12 mmol gâ1 (69 mg gâ1), and 28.32 kJ molâ1, respectively.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Sri Juari Santosa, Eko Sri Kunarti, Karmanto Karmanto,