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Optimasi Produksi Biohidrogen dari Palm Oil Mill Effluent dengan Metode Suppressing Mikroba Metanogenik pada Inokulum Kotoran Sapi Permana, Edwin; Juanda, Firdaus; Prasetyo, Joni; Murti, S.D. Sumbogo; Muis, Lince
Prosiding Seminar Nasional Teknik Kimia "Kejuangan" 2018: PROSIDING SNTKK 2018
Publisher : Prosiding Seminar Nasional Teknik Kimia "Kejuangan"

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Research in the field of bioenergy technology is currently being developed. One of bioenergy types that became the focus of development in Indonesia is biohydrogen. In producing biohydrogen from palm oil mill effluent (POME) using inoculum from cow dung, the production of biomethane gas causes biohydrogen productivity being decreased. The method used to increase the productivity of biohydrogen in this study is by suppressing methanogenic microbial treatment method which is conducted by heating cow dung inoculum at 95 °C for 120 min. Producing biohydrogen was done by fermented both POME and cow dung inoculum in vial bottle 120 mL at room temperature. Fermentation condition was adjusted at pH 5.5 by phosphoric buffer 1 M. The results obtained in this study consist with the increasing value of biohydrogen productivity, maximum of cummulative biohydrogen production rate and yield were 75.61 % and 0.43 mL H2/hr and 104.82 mL H2/g COD, respectively. This method was also perfectly suppressed biomethane gas production with percentage decreasing value is 100 %. The aim of this study is to investigate the effectiveness of suppressing method in optimizing biohydrogen production.
Studi Pengaruh Waktu Kontak, Laju Alir, dan Ukuran Packing terhadap Adsorpsi Cr(VI) permana, edwin
CHEMPUBLISH JOURNAL Vol 2 No 1 (2017): Chempublish Journal
Publisher : Universitas Jambi

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ABSTRAK   Industri elektroplatting merupakan penghasil limbah logam berat berbahaya, salah satunya kromium heksavalen. Kromium heksavalen merupakan logam yang berbahaya, mempunyai kadar racun yang tinggi dan bersifat karsinogenik penyebab kanker. Sehingga dilakukanlah upaya meminimalisasi limbah cair kromium dengan cara adsorpsi. Penelitian ini difokuskan pada pembuatan adsorben dari campuran tanin dan bentonit dengan perbandingan massa 1:3. Sampel yang digunakan adalah limbah cair sintetis dimana komposisi dari logam kromium heksavalen sesuai dengan limbah industri elektroplatting yaitu K2Cr2O7. Variabel yang digunakan adalah ukuran packing 1,0 cm dan 1,5 cm, dengan laju alir sebesar 180 ml/menit dan 240ml/menit sedangkan waktu kontak 20 menit hingga 100 menit. Pada hasil penelitian ini menunjukkan penyerapan krom tertinggi terjadi pada ukuran packing 1,5 cm dengan laju alir 240 ml/menit dan waktu kontak 20 menit yaitu 80,37%.   Kata Kunci : Elektroplatting, adsorpsi, kromium heksavalen  
PEMBUATAN KARBON AKTIF DARI KULI UBI KAYU (Mannihot esculenta) Dewi, Tri Kurnia; Nurrahman, Arif; Permana, Edwin
Jurnal Teknik Kimia Vol 16, No 1 (2009): Jurnal Teknik Kimia
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Sriwijaya

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Abstract

Some research proved that activated carbon could be made from organic materials or anorganic material with very high carbon content. The exist research of activated carbon  from coconut shell, bagasse, and saw dust. In fact, there’s a lot of material can be used as raw material, like cassava skin. At this research, done with activator type variable ( HCL, NAOH, and CaCl2), activation period   ( 24 hours, 22 hours, 20 hours and 18 hours ), and particle size (- 115 mesh, - 60+115 mesh, - 32+60 mesh, and - 16+32 mesh). This research analyzed is volatile matter, water content, and iodium adsorption. The best activator at making of this activated carbon is HCl. The best activation period is 24 hours and the best particle size is - 115 mesh,  In industrial process, activated carbon is used for deodorized, adsorbs taste, eliminate colours and organic contaminant. Testing for active carbon in this research was based on activated carbon quality standard  from Standar Industri Indonesia  No. 0258-88.