Sumrit  Mopoung, Jenjira  Kruekit, Russamee  Sitthikhankaew, 
    Production of KMnO<sub>4</sub> Loaded Activated Carbon from Sacha Inchi Seed Shell by
Low Activation Temperature Treatment for Methylene Blue Removal,
    Journal of Engineering and Applied Sciences,
    Volume 15,Issue 2,
    2020,
    Pages 421-429,
    ISSN 1816-949x,
    jeasci.2020.421.429,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2020.421.429)
    Abstract: The production of activated carbon from sacha inchi seed shell for methylene blue removal was
studied. The effects of KMnO<sub>4</sub> impregnation ratios (0-5% wt./wt.) and activation temperature (250-400&deg;C) were
evaluated. It was found that the optimum activating temperature and impregnation ratio are 350&deg;C and 1 wt.%
KMnO<sub>4</sub>, respectively. The product made under these conditions is stable and suitable for adsorption in aqueous
solution. Maximum methylene blue adsorption was achieved at pH 3 and with a relative decrease to about
95-96% adsorption efficiency between pH 4 and 9. The equilibrium adsorption data showed a good fit with the
Freundlich isotherm exhibiting 99.80 mggG1 adsorption capacity.
    Keywords: KMnO4;sacha inchi shell;low activation temperature;Activated carbon;methylene blue;equilibrium