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All Journal Jurnal Teknik Kimia Dental Journal (Majalah Kedokteran Gigi)
Tokok Adiarto
Department Of Chemistry, Faculty Of Sience & Technology, Universitas Airlangga
Chemical Engineering, Chemistry & Bioengineering Chemistry Dentistry

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PEMURNIAN GLISEROL HASIL PRODUK SAMPING BIODIESEL DENGAN KOMBINASI PROSES ADSORPSI-MIKROFILTRASIEVAPORASI Suseno, Natalia; Adiarto, Tokok; Alviany, Riza; Novitasari, Kartika
Jurnal Teknik Kimia Vol 13, No 2 (2019): JURNAL TEKNIK KIMIA
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v13i2.1406

Abstract

Penelitian ini, gliserol kasar (crude glycerol) diperoleh dari produk samping produksibiodiesel berupa larutan kental yang berwarna coklat kekuningan dengan pH mendekati netral.Kondisi awal kemurnian crude glycerol termasuk cukup tinggi (~80%), namun untuk mendapatkangliserol dengan standart komersial kemurnian tinggi (>90%), masih diperlukan penghilangansenyawa pengotor seperti garam-garam inorganik, methanol dan air. Untuk tujuan menghasilkanpemurnian gliserol dengan standar komersial, kandungan pengotor dipisahkan dengan kombinasiproses adsorpsi dengan karbon aktif, dilanjutkan penyaringan menggunakan membran danpemisahan methanol dan air dengan menggunakan rotary evaporator. Selain itu dipelajari pengaruhvariabel-variabel proses adsorpsi (jenis adsorben dengan tingkat kemurnian teknis dan p.a ,konsentrasi adsorben dan waktu adsorpsi) terhadap kadar kemurnian gliserol yang dihasilkan.Karakterisasi gliserol meliputi analisa kadar gliserol total, densitas, viskositas, dan gugus fungsimenggunakan FTIR. Gliserol hasil pemurnian tidak berwarna (bening) dengan kadar kemurnianmaksimum 92,81%, viskositas 152,48cp dan densitas 1,254g/cm3 mendekati standart kemurniangliserol komersial. DOI : https://doi.org/10.33005/tekkim.v13i2.1406
Toxicity testing of chitosan from tiger prawn shell waste on cell culture Maretaningtias Dwi Ariani; Anita Yuliati; Tokok Adiarto
Dental Journal (Majalah Kedokteran Gigi) Vol. 42 No. 1 (2009): March 2009
Publisher : Faculty of Dental Medicine, Universitas Airlangga https://fkg.unair.ac.id/en

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.503 KB) | DOI: 10.20473/j.djmkg.v42.i1.p15-20

Abstract

Background: A biomaterial used in oral cavity should not become toxic, irritant, carcinogenic, and allergenic. Chitosan represents a new biomaterial in dentistry. Purpose: To examine the toxicity of chitosan from tiger prawn shell waste on cell culture with MTT assay. Methods: Chitosan with concentration of 0.25%, 0.5%, 0.75% and 1% was used in this experiment. Each sample was immersed on eppendorf microtubes containing media culture. After 24 hours, the immersion of media culture was used to examine the toxicity effects on BHK-21 cell based on MTT assay method. The density of optic formazan indicates the number of living cells. All data were then statistically analyzed by one-way Anava. Results: The number of living cells in chitosan from tiger prawn shell waste was 93.16%; 85.07%; 78.48%; 75.66%. Thus, there was no significant difference among groups. Conclusion: Chitosan with 0.25%, 0.5%, 0.75% and 1% concentrations from tiger prawn shell waste were not toxic for BHK-21 cell culture when using parameter CD50.
Co-Authors Anita Yuliati Maretaningtias Dwi Ariani, Maretaningtias Dwi Natalia Suseno, Natalia Novitasari, Kartika Riza Alviany