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SIFAT TRANSPARANSI DAN PERMEABILITAS FILM BIONANOKOMPOSIT POLYLACTIC ACID DAN POLYCAPROLACTONE DENGAN PENAMBAHAN NANOCRYSTALLINE CELLULOSE SEBAGAI PENGISI [Transparency and permeability properties of Bionanocomposite Film of Polylactic Acid and Polycaprolactone, and Nanocrystalline Cellulose as a Filler] Eti Indarti; Arisa Sri Marlita; Zaidiyah Zaidiyah
Jurnal Teknologi & Industri Hasil Pertanian Vol 25, No 2 (2020): Jurnal Teknologi & Industri Hasil Pertanian
Publisher : Teknologi Hasil Pertanian Fakultas Pertanian Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtihp.v25i2.81-89

Abstract

Production of Polylactic acid (PLA)/Polycaprolactone (PCL) bionanocomposite films with various ratios was done by adding nanocrystalline celullose (NCC) from oil palm empty fruit bunches (OPEFB) as a filler. The aim of the research was to find out the effect of PLA/PCL ratio on film thickness, transparency of bionanocomposite films and water vapor permeability or WVP of the film bionanocomposite with addition of the 3% NCC.  The PLA/PCL ratio are 1.0/0.0; 0.8/0.2; 0.6/0.4; 0.5/0.5; 0.4/0.6; 0.2/0.8; and 0.0/1.0, prepared with solvent casting method. Characterization of PLA/PCL bionanocomposites film performed was thickness, transparency test and water vapor permeability (WVP) test. The thickness of bionanocomposites film produced were around are about 0.036-0.053 mm, results show that the lower PLA/PCL ratio the thicker film obtained. The highest value of film transparency was obtained at a ratio of 1.0 / 0.0 (81.4% at a wavelength of 550 nm), the smaller the PLA / PCL ratio, the lower the value of transparency. The WVP value of PLA/PCL bionanocomposite films gives a lower value than the WVP value of pure PLA film and pure PCL film. The best WVP was obtained at a PLA/PCL ratio of 0.8/0.2 which was 1.49x10-16kg.m/(m2.s.Pa).  
Recovery air kondensat pada stasiun perebusan untuk menekan oil losses: studi kasus PKS Cot Girek Eti Indarti; Dicky Aulia Zulmi; Zaidiyah Zaidiyah; Zulhadi Zulhadi
AGROINTEK Vol 16, No 2 (2022)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v16i2.11050

Abstract

This study aims to reuse condensate water from sterilization stations to reduce oil losses; a case study at PKS Unit of PT. Perkebunan Nusantara I Cot Girek, North Aceh. Oil losses, a common problem in most crude palm oil (CPO) production, in the PKS Unit reach 0.71%, exceeding the company's standard of 0.6%. Among the possible oil losses, the sterilization station is concerned in this study due to the high content oil (0.86%) of the condensate water discharged from the station still. Therefore, the addition of a reservoir for condensate water is required to settle the impurities, and then this treated water is reused as diluent water in the oil gutter station. As a result, the overall oil losses in the fat pit reduce from 0.71% to 0.67%. Although the reduction of oil losses is only 0.04%, the cost-benefit of the reservoir addition is worthy 51.2 million rupiahs per month.