Browsing P - Mathematics and Natural Sciences by Author "Erwin, Erwin"
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Esterification of Oil Adsorbed on Palm Decanter Cake into Methyl Ester using Sulfonated Rice Husk Ash as Heterogeneous Acid Catalyst
Hindryawati, Noor; Erwin, Erwin; Pragas Maniam, Gaanty (American Institute of Physics (AIP) - The 1st International Conference on Mathematics, Science, and Computer Science (ICMSC) 2016, 2017-02-15)Palm Decanter cake (PDC) which is categorized as the waste from palm oil mill has been found to contain residual crude palm oil. The oil adsorbed on the PDC (PDC-oil) can be extracted and potentially used as feedstock for ... -
Synthesis and Charactherization of Chitosan-Tripolyphosphate from Clam Shells (Cerithidea obtusa) and Its Application to Sorption of Cadmium Ion
Anuar, Hajar; Koenarpadi, Soerja; Erwin, Erwin (Mulawarman Press, 2021-10-27)Synthesis and characterization of chitosan-tripolyphosphate (Chi-TPP) from Clam Shells (Cerithidea obtusa) and its application to sorption of cadmium ion has been researched. The Chi-TPP was synthesized using gelation ...