Feasibility Studies of Magnesium (II) Removal from Fresh Field Natural Rubber Latex Using Macroporous Cationic Exchange Resin

Abstract:

The presence of magnesium ions (Mg²⁺) in fresh field natural rubber latex (FF-NRL) is a major concern for concentrated production. In general, Mg²⁺ is reduced by adding diammonia hydrogen orthophosphate (DAP) to FF-NRL. The reaction rate between DAP and Mg²⁺ in NRL is very slow and is the cause of waste latex sludge, waste time for more than 12 hours, and chemicals loss. Moreover, the waste latex sludge is toxic and has to be treated. In this research, the possibility of using cationic exchange resin to remove Mg²⁺ from the FF-NRL was investigated. The experiment was carried out by comparison the efficiency of difference commercial exchange resin on Mg²⁺ reduction rate after immersing in FF-NRL. The results were found that macroporous cationic exchange resin adsorped Mg²⁺ with highest rate. The Mg²⁺ content of NRL reduced to 100 ppm after immersing macroporous cationic exchange resin in FF-NRL for 6 hours. The performance of cationic exchange resin was increased after regenerate process with acid and can be used for further to reduce Mg²⁺ in FF-NRL. The morphology of cationic exchange resin was investigated using scanning electron microscope (SEM).

• Periodical: Advanced Materials Research (Volume 844)
• Pages: 198-200
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.844.198
• Online since: November 2013
• Authors: Sineenart Puangmanee, Wirach Taweepreda*
• Keywords: Exchange Resin, Magnesium, Natural Rubber Latex (NRL)

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DOI: 10.1021/ie801242v