Unesa Journal of Chemistry
Volume 2, Number 1, 2013

PENGARUH JENIS BAMBU DAN KONSENTRASI NATRIUM BISULFIT TERHADAP RENDEMEN NATRIUM LIGNOSULFONAT (EFFECT OF TYPE OF BAMBOO AND CONCENTRATION SODIUM BISULFITE ON YIELD SODIUM LIGNOSULFONATE)

Nasrudin, Harun (Jurusan Kimia FMIPA Unesa)
ANDRIANI, EVA (Jurusan Kimia FMIPA Unesa)



Article Info

Publish Date
29 Jan 2013

Abstract

Abstrak. Lignosulfonat merupakan produk turunan lignin yang tersulfonasi dan dapatdimanfaatkan sebagai natrium (dispersant, emulsifier), pengikat (binder agent), bahan aditifdalam industri kosmetik, dan farmasi. Bambu mempunyai rendemen lignin yang cukup besaryaitu 19,8 - 26,6 %. Natrium lignosulfonat dapat dibuat dengan mereaksikan serbuk bambudengan natrium bisulfit (NaHSO3) sebagai agen pensulfonasi. Penelitian ini bertujuanmengetahui pengaruh jenis bambu dan konsentrasi larutan NaHSO3 terhadap prosen rendemennatrium lignosulfonat dari batang bambu. Bambu yang digunakan dalam penelitian ini adalahbambu Ori dan bambu Apus. Reaksi dilakukan dalam labu leher dua pada pH 4, suhu 105 0C,kecepatan pengadukan 80 rpm, dan waktu reaksi selama 30 menit. Hasil dianalisismenggunakan spektrofotometer FT-IR dan UV-Vis. Berdasarkan hasil penelitian, semakinbesar rendemen lignin dan konsentrasi natrium bisulfit, maka rendemen lignosulfonat yangdiperoleh juga semakin besar. Rendemen lignosulfonat terbesar diperoleh pada bambu Oridengan konsentrasi NaHSO3 30% yaitu sebesar 28,60%. Berdasarkan perhitungan darispektrofotometer UV-Vis menunjukkan bahwa nilai kemurnian lignosulfonat hasil penelitianmasih cukup rendah yaitu sebesar 40,87 % pada bambu Ori dan 41,20 % pada bambu Apus.Kata kunci : natrium lignosulfonat, serbuk bambu, natrium bisulfitAbstract. Lignosulfonate is a sulfonated lignin derivatives and can be used as a surfactant(dispersant, emulsifier), binder (binder agent), the additive in the cosmetics industry, andpharmaceuticals. Bamboo has a substantial lignin content 19.8 to 26.6%. Sodium lignosulfonatecan be made with bamboo powder reacting with sodium bisulfite (NaHSO3) as sulfonationagents. This study aims to determine the effect of species of bamboo and NaHSO3 concentrationagainst percent sodium lignosulfonate levels of bamboo rods. Bamboo is used in this study Oribamboo and bamboo Apus Ori. Reactions were performed in two neck flask at pH 4,temperature of 105 0C, 80 rpm stirring speed, and reaction time of 30 minutes. The results werethen analyzed using a spectrophotometer FT-IR and UV-Vis. Based on the results of the studyfound that the greater the concentration of sodium bisulfite and lignin content of bamboo foundin the levels of lignosulfonate obtained also getting bigger. Levels of lignosulfonate largestbamboo Ori obtained at a concentration of NaHSO3 30% is equal to 28.60%. Based on thecalculation of the UV-Vis spectrophotometer showed that the purity of lignosulfonate researchis still quite low at 40.87% at 41.20% on bamboo Ori and bamboo Apus.Keywords: lignosulfonate surfactant, bamboo powder, sodium bisulfite

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Journal Info

Abbrev

unesa-journal-of-chemistry

Publisher

Subject

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry

Description

UNESA Journal of Chemistry is published online by the Department of Chemistry, Faculty of Mathematics and Natural Sciences, Surabaya State University, located at Jl Ketintang, Surabaya, East Java, Indonesia. 60231. Published 3 times a year (January, May and September) Aims and Scope: UNESA Journal ...