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All Journal Jurnal Teknik Kimia USU

Netti Herlina

Departemen Teknik Kimia, Fakultas Teknik, Universitas Sumatera Utara

Author-ID : 4065301

Chemical Engineering, Chemistry & Bioengineering Chemistry Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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STUDI ISOLASI DAN RENDEMEN LIGNIN DARI TANDAN KOSONG KELAPA SAWIT (TKKS) Harmaja Simatupang; Andi Nata; Netti Herlina
Jurnal Teknik Kimia USU Vol. 1 No. 1 (2012): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Oil palm empty fruit bunches (TKKS) is one of the solid waste generated by the palm oil industry that contain lots of fiber. Based from its chemical composition, TKKS has the potential to be used as a source of chemicals that lignin. Lignin can be used commercially as binders, adhesives, fillers, surfactants, polymer products, dispersants and other chemicals. This study used fiber powder TKKS cleared of extractive substances to extract them using benzene: 96% ethanol (2:1, v / v) for 6 hours. Fiber powder is then cooked with a variety of cooking 1,2,3 hours with the addition of NaOH variation of 10%, 15%, and 20% to obtain the black liquor, black liquor and dilution variations during lignin isolation. The results showed that the optimum yield of lignin obtained is 16.42% with 84.21% purity lignin in cooking 2 hour treatment with the addition of 20% NaOH and diluting the black liquor 1:2. The test results showed FT-IR has wavelengths lignin constituent functional groups in according with the standard lignin.

PENGARUH PENAMBAHAN AKTIVATOR ZnCl2, KOH, DAN H3PO4 DALAM PEMBUATAN KARBON AKTIF DARI PELEPAH AREN (Arenga Pinnata) Marina Olivia Esterlita; Netti Herlina
Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

This research aimed to determine the effect of carbonization temperature and activator agent in making activated carbon, and also determine the optimum temperature, and best activator agent. The raw material used is kind of lignocellulosic like palm frond. The palm fronds cleaned and chopped, then it soaked in each activator solution include KOH, ZnCl2, and H3PO4 at room temperature for 24 hours. After that, palm fronds carbonized in the furnace at a temperature of 4000C, 5000C, and 6000C in 1 hour. Carbon washed by aquadest until its netral, after that calculated the yield of charcoal, moisture content, and absorption ability of the iodine solution. The highest yield obtained in the activated carbon which impregnated by ZnCl2 at the temperature 4000C which is 82,04%. The best water content of activated carbon obtained in the activated carbon impregnated by H3PO4 of 6% which is the lowest one. Activated carbon which has the largest number of iodine absorption was also obtained on the active carbon carbonized at a temperature of 5000C and activated by H3PO4 which is 767.745 mg iodine / g of activated carbon, and the value is in compliance with SNI.

PENGARUH KONSENTRASI PEREKAT TEPUNG TAPIOKA DAN PENAMBAHAN KAPUR DALAM PEMBUATAN BRIKET ARANG BERBAHAN BAKU PELEPAH AREN (Arenga pinnata) Julham Prasetya Pane; Erwin Junary; Netti Herlina
Jurnal Teknik Kimia USU Vol. 4 No. 2 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

The demand of renewable energy resources has been increasing. Briquette is one of the alternative energy resource which can be produced from utilization of biomass. This research aims to obtain a briquette from sugar palm frond, to obtain the effect of adhesive concentration of cassava starch and addition of lime on the quality of briquettes. This research used the batch method. Research variabels are the adhesive concentration of cassava starch in 0%, 10%, 20% and 30% (w/w) and the addition of lime in 0%, 1%, 3% and 5% (w/w) based on the weight of char powder. General materials are sugar palm (Arenga pinnata) frond, cassava starch and lime, and the general tools are furnace, briquette printer, oven, moisture analyzer, universal testing machine and bomb calorimeter. Briquetting process was started with sugar palm fronds preparation then they’re carbonized at 350 oC for 2 hours. Product of carbonization as a charcoal which is added by a cassava starch adhesive and lime then they’re printed or shaped and dried to be a briquette. Analysis used is the proximate analysis of the test parameters moisture content, ash content, volatile combustion matter content, carbon content, calorific value and compressive strength. The best briquette is with adhesive concentration in 0% and addition of lime in 5% with the calorific value 6502,379 cal/g, 45,56% fixed carbon, 6,44% moisture, 18,00% ash, 30,00% volatile combustion matter and 59,141 kg/cm2 compressive strength.

PEMBUATAN BIOETANOL DARI NIRA AREN (Arenga pinnata Merr) MENGGUNAKAN Saccharomyces cerevisiae Meilani M Manurung; Gusti Handayani; Netti Herlina
Jurnal Teknik Kimia USU Vol. 5 No. 4 (2016): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Bioethanol was an alcohol substance which can be obtained by biomass fermentation process. The purpose of this study was to determine the effect of agitation and volume of starter on yield and concentration of bioethanol produced from palm juice (Arenga pinnata Merr). Catalyst used was Saccharomyces cerevisiae. Observed variables were agitation and volume of starter in anaerobic fermentation. The experiment started with preparation of a starter followed by fermentation process. The product obtained from distillation process at temperature of 88 °C. The results showed that the higher agitation speed and volume of starter, yield and concentration of bioethanol will be higher. The highest concentration and yield obtained on the condition at a agitation of 100 rpm and 35% starter amounted to 47.618% (v/v) and 48.1411%. If it exceed that point, the changes of agitation and the addition of starter did not increase the concentration and yield of ethanol produced.

Co-Authors Andi Nata Erwin Junary Gusti Handayani Harmaja Simatupang Julham Prasetya Pane Marina Olivia Esterlita Meilani M Manurung

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