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PERBANDINGAN NILAI BAKAR BRIKET BATUBARA DAN BRIKET ARANG (CAMPURAN CANGKANG BINTARO (Cerbera Manghas) DAN BAMBU BETUNG (Dendrocalamus Asper) Ida Febriana; Zurohaina Zurohaina; Sahrul Effendy
TEKNIKA: Jurnal Teknik Vol 6 No 1 (2019)
Publisher : Universitas IBA Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (303.203 KB) | DOI: 10.35449/teknika.v6i1.99

Abstract

Charcoal briquettes are smokeless fuels which are a type of solid fuel whose fly substance is made low enough so that the smoke generated on its utilization will not interfere with health. In this study charcoal briquettes were made from bintaro shell waste and betung bamboo using tapioca flour adhesives. This study aims to obtain the best quality sub-bituminous coal briquettes and coal briquettes. In this study the carbonization temperature used was 400ᵒC and the composition of raw materials for bintaro shells and betung bamboo was 50:50, the composition of raw materials for sub-bituminous coal and straw 90:10. The method used in this research is experiment or experimental method, with fuel value collection using ASTM D5865-03 standard. The results obtained from this study are for charcoal briquettes with 4000C carbonization temperature Inherent Moisture value of 1.91%, ash 2.29%, volatile matter 23.79%, fixed carbon 72.01% and calorific value 5878.7 kal / gr, and for coal briquettes obtained value Inherent Moisture 0.52%, ash 4.42%, volatile matter 17.98%, fixed carbon 77.08% and calorific value 7152.6 kal / gr. The fuel value of coal briquettes is greater than that of charcoal briquettes, but the combustion value of charcoal briquettes includes a good calorific value as an alternative energy source, and is in accordance with the SNI standard of 5000 kal / gr, even close to the Japanese standard 6000 cal / gr. Keywords: Bintaro, briquette, calorific value
PENGGUNAAN EKSTRAK BELIMBING WULUH MATANG SEBAGAI PENGGUMPAL LATEKS PASCA PANEN (STUDY PENGARUH VOLUME, WAKTU PENCAMPURAN, TEMPERATUR DAN pH Surya Hatina; Ida Febriana
TEKNIKA: Jurnal Teknik Vol 5 No 2 (2018)
Publisher : Universitas IBA Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (296.19 KB) | DOI: 10.35449/teknika.v5i2.94

Abstract

Penggunaan ekstrak belimbing wuluh sebagai koagulan lateks telah diteliti. Belimbing wuluh mengandung asam sitrat yang cukup tinggi dan diharapkan dapat menjadi alternatif koagulan lateks. Penelitian ini dilakukan dengan cara membekukan lateks dengan ekstrak belimbing wuluh dengan perlakuan variasi volume ekstrak belimbing wuluh (2 ; 4 ; 6 ; 8 dan 10 ml), variasi waktu pencampuran (1 ; 4 ; 8 ; 12 ; 16 ; 20 dan 24 jam), variasi temperatur (30 ; 50 dan 70oC) dan variasi pH (1,5 ; 2 ; 2,5 ; 3 ; 3,5 ; 4 ;4,5 dan 5) untuk mendapatkan volume, waktu pencampuran, temperatur dan pH optimum. Pada volume 8 ml air asam belimbing wuluh, waktu pencampuran 16 jam, temperature pencampuran 30oC dan Ph 2 diperoleh karet kering yang maksimal. Kata Kunci: koagulasi, lateks, ekstrak belimbing, asam sitrat