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Uripto Trisno Santoso
Department Of Chemistry, Faculty Of Mathematics And Natural Sciences, Lambung Mangkurat University Jl. Jend. Ahmad Yani KM 36 Banjarbaru, South Kalimantan 70714
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics

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Journal : Chemistry Indonesian Journal of Chemical Research

 1 
Characterization of Alginate-Cellulose-Kaolin Composites for Slow-Release Urea Fertilizer Sunardi, Sunardi; Faramitha, Gusti Nia; Santoso, Uripto Trisno
Indonesian Journal of Chemical Research Vol 8 No 3 (2021): Edition for January 2021
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2021.8-sun

Abstract

Research on the effect of cellulose and kaolin addition to alginate-cellulose-kaolin composites' characteristics as a slow-release agent of urea fertilizer has been done. The technique used in composites' preparation is an extrusion technique using 2% CaCl2 solution as a cross-linker. The compositions of alginate-cellulose-kaolin were varied to determine their effect on composites' characteristics such as diameter, color, swelling ratio, entrapment efficiency, and release of urea. The results showed that the diameter of beads in wet condition produced ranges from 2.98 to 3.54 mm, whereas the diameter of dry beads ranges from 1.22 to 1.92 mm. The addition of cellulose and kaolin affected the color of the beads produced based on CIE Lab analysis. The value of the swelling ratio decreased with the addition of cellulose and kaolin. The entrapment efficiency of urea in beads obtained ranged from 37.25 to 45.06%. The release of urea in aqueous media showed that cellulose and kaolin's addition into the alginate affected the amount of released urea.
Study Effect of Chitosan-Epichlorohydrin Macropore Beads on Decreasing the Value of Total Dissolved Solid (TDS) and Dyes in Sasirangan Liquid Waste Treatment Ariyani, Dahlena; Hilma, Nabila Khairiyatul; Utami, Umi Baroroh Lili; Santoso, Uripto Trisno; Mujiyanti, Dwi Rasy
Indonesian Journal of Chemical Research Vol 11 No 1 (2023): Edition for May 2023
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598//ijcr.2023.11-muj

Abstract

Sasirangan liquid waste contains contaminants that are quite dangerous, characterized by high values of total dissolved solids and dyestuffs. This study aims to determine the effect of dose and pH on chitosan-epichlorohydrin macropore beads. The parameters of the measured waste are total dissolved solids and dyestuffs. The process of absorption of sasirangan liquid waste characterizes by FTIR. The results showed that chitosan-epichlorohydrin beads that interacted with sasirangan liquid waste had optimum results at a chitosan dose of 600 mL/L, with a decrease in the total value of dissolved solid by 2161 mg/L and a decrease in dye by 84.78%. Chitosan-epichlorohydrin beads at pH against total dissolved solid gave optimum results at pH 7 with a reduction in the total dissolved solid value of 2269 mg/L, while pH against dyestuffs gave optimum results at pH 3 with a decrease of 94.09%. The interaction between chitosan and chitosan-epichlorohydrin beads occurred a shift in wave numbers from 943 cm-1 to 932 cm-1 showing the C-O-C group and the chitosan-epichlorohydrin beads spectra with waste at wave numbers 3013-3618 cm-1 to 3007-3631 cm-1 the O-H vibration group overlapped the N-H vibration and showed the result that the beads Chitosan-epichlorohydrin/adsorb sasirangan liquid waste.
Co-Authors A.A. Ketut Agung Cahyawan W Abdullah Abdullah Abdullah Abdullah Abdullah Abdullah Ade Mutia Rahmah Adi Maulana Ahmad Budi Junaidi Ahmad Riadi Amelia Harianti Aminonatalina Aminonatalina Arif Sholahuddin Azidi Irwan Bambang Rusdiarso Bambang Rusdiarso Budi Junaidi, Budi Citra Ariyanti Dahlena Ariyani Dewi Umaningrum Dorothy Eka Ria Dwi Rasy Mujiyanti Dwi Rasy Mujiyanti Dwi Rasy Mujiyanti Dwi Siswanta Dwi Siswanta Dwi Siswanta Dwi Siswanta Eka Puspita Romadhoni Emmy Sri Mahreda Faramitha, Gusti Nia Hasanah Hasanah Herdiansyah Herdiansyah Herdiansyah Herdiansyah Hilma, Nabila Khairiyatul Idris, Muddatstsir Jihan Askia Kamilia Mustikasari Kamilia Mustikasaria Karlini Karlini Kholifatu Rosyidah Kiki Miranti Leo Saputra Maria Dewi Astuti Melissa Melissa Muhammad Agus Muljanto Mutiara Dwi Saptarini Nur Heirani Emi Pradita, Hapsari Tyas Puput Nopitasari Radhina Oktari Radna Nurmasari Rahmat Eko Sanjaya Rahmat Yunus Rahmat Yunus Rahmat Yunus Retno Elya Rohmah Riana Maulana Risnu Aritofa Rodiansono Rodiansono Sadiqin, Ikhwan Khairu Shogo Shimazu Sri Juari Santosa Sri Juari Santosa Sri Juari Santosa Sri Juari Santosa Sri Juari Santosa Sulfi Adam Sunardi Sunardi Syahmani Syahmani Taufiqur Rohman Umi Baroroh Lili Utami Utami Irawati Wiwin Tyas Istikowati