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Indriana Lestari
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Degradasi Senyawa Organik pada Palm Oil Mill Secondary Effluent Menggunakan Fotokatalis TiO2 Indriana Lestari
JURNAL CITRA WIDYA EDUKASI Vol 9 No 2 (2017): JCWE Edisi Agustus 2017
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

Degradation of organic compound on palm oil mill secondary effluent by photocatalytic process using TiO2 photocatalysts with aeration of air has been carried out in the semi batch photo-reactor system equipped with mercury 350 W lamps. The concentration of organic compounds in POMSE was analyzed by UV-Vis Spectrophotometer. Photodegradation performance test showed that TiO2 photocatalyst was able to degrade organic compounds and could eliminate phenol pollutans in POMSE effectively, where the degradation performance of organic compound from TiO2 photocatalyst was respectively 31.36% and phenol elimination up to 96.66% (loading TiO2 = 1.5 g/L, air flow rate = 10 cc/min) at minutes-120. The result also showed that the performance of TiO2 photocatalyst in degrading organic compound was stable at 25.25 to 31.36% for two hours (COD POMSE of 250 to 650 ppm).
Pemanfaatan Limbah Fiber Ex-Fibercyclone dan Tandan Kosong Kelapa Sawit sebagai Bioetanol dengan Menggunakan Bakteri Zymomonas mobilis Indriana Lestari
JURNAL CITRA WIDYA EDUKASI Vol 10 No 3 (2018): JCWE Edisi Desember 2018
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Ethanol made from berlignocellulose biomass is a technology for producing fuel as a new renewable energy source (NRE) that is sustainable, environmentally friendly and does not compete with foodstuffs. Fiber ex-fibercyclone and empty bunch is a lignocellulose material produced by palm oil mill with a large volume. Research on the manufacture of bioethanol from ex-fibercyclone and empty oil palm fiber using Zymomonas mobilis bacteria was carried out. The purpose of this study was to determine the potential of fiber ex-fibercyclone and empty bunch solid wastes as ethanol feedstock and optimal fermentation time to obtain the highest ethanol production. The waste samples went through 3 stages of the process, namely delignification using 4% NaOH, followed by hydrolysis using 2% H2SO4 and hydrolyzate fermentation using Zymomonas mobilis which was carried out for 3, 4, 5 and 6 days. The fermentation result were analyzed using a refractometer and GC-FID. The results showed that fiber ex-fibercyclone and empty bunch solid waste had the potential to be made bioethanol using Zymomonas mobilis bacteria with optimal fermentation time for 4 days and obtained ethanol yield from ex-fibercyclone fiber by 60% (v/b) and 82% (v/b) of empty bunch, while ethanol level measured by GC-FID were 0.0346% and 1.886%, respectively. The empty bunch waste produces more ethanol than ex-fibercyclone fiber.
Perhitungan Debit Uap Boiler dan Ketercapaian Kebutuhan Uap Pabrik Kapasitas 45 Ton/Jam Bekti Santoso; Ahdiat Leksi Siregar; Indriana Lestari
JURNAL CITRA WIDYA EDUKASI Vol 11 No 2 (2019): JCWE Edisi Agustus 2019
Publisher : Politeknik Kelapa Sawit Citra Widya Edukasi

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Abstract

A Boiler is an energy conversion machine that converts water to steam, which occurs due to continuous heating. The steam produced can be used for all equipment that requires steam at a palm oil mill (POM), especially power turbines. In addition, other equipment are sterilizers, pressing station, kernel recovery station and clarification station. The quality and quantity of steam produced must be based on their need, because if it is not achieved it will disrupt the processing in the POM. This study purpose to calculate the quantity of steam needed for palm oil processing in POM. This research was conducted on May 7th until May 12th, 2018. This study used a descriptive method with data gathering techniques by observation, documentation and interview. The result showed that the average steam discharge was 30,523 Kg/hour, while the steam requirement for turbine operation with an actual power of 1,200 Kw was 26,400 Kg and for the palm oil processing was 24,750 Kg/hour. Steam discharge generated by the boiler is over than the mill capacity of 45 Tons/hour, so that the steam discharge generated by the boiler is sufficient to meet the steam need in the POM.
Co-Authors Ahdiat Leksi Siregar Bekti Santoso