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All Journal Jurnal Teknik Kimia USU

Irvan

Departemen Teknik Kimia, Fakultas Teknik, Universitas Sumatera Utara

Author-ID : 4065306

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

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PERANCANGAN AWAL PABRIK BIOHIDROGEN DARI LIMBAH CAIR PABRIK KELAPA SAWIT DENGAN FERMENTASI ANAEROBIK PADA KONDISI TERMOFILIK Bambang Trisakti; Irvan; Hari Tiarasti; Irma Suraya
Jurnal Teknik Kimia USU Vol. 1 No. 1 (2012): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Indonesia has a lot of natural resources which is deficient to fulfill the energy demand of consumers, particularly fuel. Therefore, the government keeps on promoting the search for alternative energy. One of these is hydrogen. Hydrogen is an environmental friendly product that does not produce carbon emissions. In the formation of hydrogen we can use carbohydrate-rich waste as a raw material and by using fermentation process. However, it is still limited research only. So this encourage us to design biohydrogen plant from palm oil mill effluent (POME) with the conditions of thermophilic anaerobic fermentation in order to accomplish the needs of consumers and contribute in developing clean technologies. For the production capacity of 495.1694 tons / year, the total investment required to build a factory of biohydrogen in Indonesia is Rp. 507,190,573,523, - with a total production cost of Rp. 354,636,600,139, -. Parameter feasibility of the production capacity of 495.1694 tons / year is the total product sales of Rp 174,261,989.701, - and net income 180,030,185,327, -. Profit Margin (PM) 41.9% Break Even Point (BEP) 45.24%, Return on Investment (ROI) 35.5%, Pay Out Time (POT) 2.82 years, Return of Network (RON) 59.16%, Internal Rate of Return (IRR) 53.52 %.

PEMBUATAN BIOGAS DARI BERBAGAI LIMBAH CAIR PABRIK KELAPA SAWIT Irvan; Irma Suraya; Hari Tiarasti; Bambang Trisakti; Rosdanelli Hasibuan; Yoshimasa Tomiuchi
Jurnal Teknik Kimia USU Vol. 1 No. 1 (2012): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

The purpose of this research is to determine the effect of Fe level as trace metal on the quantity of biogas produced from the fermentation of palm oil mill effluent (POME). Materials used in this study included POME from one of the palm oil factories belong to PTPN IV, hydrochloric acid, sodium bicarbonate, and trace metal. Observed variables were volume of biogas, concentration of Fe in fermentor, rate of degradation total solid (TS) and volatile solid (VS), and CO2at Hydraulic Retention Time (HRT) 6 days. Before HRT of 6 days reached, initial trace metal composition of Fe added were 25.2 mg / L, Co 0.42 mg / L and Ni 0.49 mg/ L. After that, composition of trace metal were consisted only Co and Ni. The results of this study showed that Fe as a trace metal did not affect the production or quantity of biogas and concentration Fe on level > 330 mg/L decreased the value of CH4, total solid (TS) and volatil solid (VS). Thus, Fe in the trace metal is no longer required if there is a high content of Fe in POME because it can be toxic for microorganism in the fermentation of biogas.

RANCANGAN ALAT PEMBUATAN BIOETANOL DARI BAHAN BAKU KULIT DURIAN Irvan; Bambang Trisakti; Luri Adriani; Reviana Revitasari
Jurnal Teknik Kimia USU Vol. 4 No. 1 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

In this research, the bioethanol production unit using durian peel as raw material was designed with capacity process of 100 liters per cycle in batch process. The main equipments were designed fermenter and distillation unit. Fermenter tank was designed with 43 cm of diameter and 86 cm of height which was equipped with two manual paddle impeller of 30 cm in diameter. The other of main equipments, distillation tank was made of stainless steel with 48 cm of diameter and 54 cm of height, which was equipped with heater to heat the liquid of fermentation process and cooling tank to cool vaporised bioethanol. The time required for one cycle of fermentation with batch process was 7 days and 7 hours. While the time required for one cycle of bioethanol production with batch process was 8 days and 4 hours. The feasibility of bioethanol production unit in which consists of fermenter tank and distillation tank under condition process of 7 days and yeast concentration of 6% and distillation temperature of 80oC was tested. The results obtained were 8,98% of bioethanol concentration during fermentation and 74,96% of bioethanol concentration during distillation.

PEMBUATAN BIOETANOL DARI TEPUNG AMPAS TEBU MELALUI PROSES HIDROLISIS TERMAL DAN FERMENTASI: PENGARUH PH, JENIS RAGI, DAN WAKTU FERMENTASI Irvan; Popphy Prawati; Bambang Trisakti
Jurnal Teknik Kimia USU Vol. 4 No. 2 (2015): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Bioethanol is ethanol, which made from starch, glucose, or cellulose of plants. In this research, it has been made from cellulose of sugarcane baggase. This research was conducted to study about the effect of pH, yeast type and the duration of fermentation to yield’s ethanol. The main processes in this research were thermal hydrolysis by liquid hot water (LHW) method, fermentation by using Saccharomyces cerevisiae and purification by vacuum distillation. The variables in this research were pH 4; 4,5; and 5; baker’s yeast and fermented glutinous cassava; and the duration of fermentation were 2, 4, 6, 8 and 10 days. Based on the analysis of the yield, the volume of bioethanol is 23 mL with 0,95 g/ml density and 161,59 kkal/kg heat value as the best yield, under the condition of pH 5 and 4 days of the duration of fermentation using baker’s yeast.

PENGARUH PERBANDINGAN MASSA ECENG GONDOK DAN TEMPURUNG KELAPA SERTA KADAR PEREKAT TAPIOKA TERHADAP KARAKTERISTIK BRIKET Iriany; Meliza; Firman Abednego S. Sibarani; Irvan
Jurnal Teknik Kimia USU Vol. 5 No. 1 (2016): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

The purpose of this research is to know the characteristics of briquettes including ash content, moisture content, volatile matter content, heating value, density, burning rate, tensile strength and to know the proper ratio of water hyacinth and coconut shell mixture under tapioca gluten variation. The ratios of water hyacinth and coconut shell in this research were 1:1, 1:2, 1:3, 1:4 with variation of tapioca gluten 5%, 10%, and 15% of the raw materials. From this research, the ideal composition of briquette is obtain in a mixture of water hyacinth and coconut shell at a ratio of 1:4 with tapioca gluten 10%, ash content 9.718%, moisture content 1.374%, volatile matter content 14.814%, heating value 6,879.596 cal/g, density 0.983 g/cm3, burning rate 3.021 × 10-3 g/second and tensile strength 18.400 g/cm2.

ADSORPSI β-KAROTEN YANG TERKANDUNG DALAM MINYAK KELAPA SAWIT (CRUDE PALM OIL) MENGGUNAKAN KARBON AKTIF Irvan; Olyvia Putri Wardhani; Nurul Aini; Iriany
Jurnal Teknik Kimia USU Vol. 5 No. 1 (2016): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Crude palm oil (CPO) is the richest natural source of carotenoids which gives the reddish-orange color in crude palm oil. The reddish color in unprocessed palm oil is disliked by consumer. This research is aimed to adsorb the β–carotene from the CPO using activated carbon, then the kinetics, isotherm models and thermodynamics data of the adsorption process were obtained. The main materials used in this research were CPO and activated carbon. The observed parameters were final concentration and the amounts of adsorbed β–carotene in activated carbon. The adsorption process was conducted by mixing the adsorbent with CPO with the variation of adsorbent: CPO (w/w) ratio = 1 : 3; 1 : 4; 1 : 5 and 1 : 6 with mixing speed 120 rpm and the temperature of 40, 50 and 60 oC. The sample of CPO and activated carbon was analyzed at every 2 minutes until the equilibrium was achieved. The final concentration of the unadsorbed β–carotene was analyzed using UV-Vis spectrophotometer. The results showed that the more CPO used in the process, the lower the adsorption percentage. The higher the adsorption temperature, the higher adsorption percentage. Moreover, the maximum adsorption percentage was 95.108% obtained at ratio 1 : 3 and T = 60 oC. The adsorption isotherm model which fit with the β–carotene adsorption at T = 60 oC was Langmuir model with the correlation coefficient of 0.959. The adsorption kinetics model which fit with the β–carotene adsorption was the second order kinetics model with the correlation coefficient of 0.998. The value of free energy Gibbs (ΔG) = -24,482.484 ; -24,708.059 and -24,933.634 J/mol for each temperature respectively, value of entropy changes (ΔS) = 22.557 J/mol K, and value of enthalpy changes (ΔH) = -17,421.987 J/mol.

PENGARUH KONSENTRASI RAGI DAN WAKTU FERMENTASI PADA PEMBUATAN BIOETANOL DARI BIJI CEMPEDAK (Artocarpus champeden spreng) Irvan; Ayu Wandira Putri; Sri Ulina Surbakti; Bambang Trisakti
Jurnal Teknik Kimia USU Vol. 5 No. 2 (2016): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Needs fuel as a source of energy every day is increasing, while the energy reserves of petroleum (fossil) dwindling, therefore, to meet the needs of the fuel it is necessary to develop alternative fuels that are renewable and home environment (renewable ). Etonal Bioethanol is made from plants containing starch, sugar and other plant cellulose. Where in this study using jackfruit seeds that contain high enough carbohydrates as raw materials. This research aims to make bioethanol from cempedak seeds with various concentrations of yeast and fermentation time. The main process is hydrolysis; fermentation using yeast Saccharomyces Cereviciae; and purification by distillation and condensation. Variables used are changes in the concentration of yeast 3%, 6%, 9% and 2 days, 3 days, 4 days fermentation period. From the analysis of the research results obtained bioethanol yield per amount of raw materials is the best starting 12,5 ml/kg with a density of 0.962 g/ml and the calorific value sebasar 181.925 kcal/kg, which is the variation of the concentration of 9% and 3 days of fermentation period.

PENGARUH RASIO RECYCLE TERHADAP PRODUKSI BIOGAS MENGGUNAKAN REAKTOR TANGKI BERPENGADUK BERBANTUKAN MEMBRAN ULTRAFILTRASI PADA KONDISI TRANSISI (45 oC) Bambang Trisakti; Irvan; M.Taufan Anantama; Arbie Saldi Zusri; Alfian Haikel Lubis; Sri Eka Cahyani
Jurnal Teknik Kimia USU Vol. 8 No. 1 (2019): Jurnal Teknik Kimia USU
Publisher : Talenta Publisher (Universitas Sumatera Utara)

Anaerobic digestion is one of solution to environmental problems and energy sources for current energy needs. In anaerobic digestion, organic material is degraded by bacteria, which is carried out without oxygen, and converts it to a mixture of methane and carbon dioxide. POME can be degraded anaerobically in anaerobic digester to produce biogas. This study aims to increase the conversion of biogas produced using a 2 liter Continuous Stirred Tank Reactor (CSTR) type digester in the methanogenesis process by recycling the effluent produced through the ultrafiltration membrane in a transition condition (45oC). The process is carried out by varying the recycle ratio, which is 0%, 15% and 25% on HRT 6 days with a condition of pH 7 ± 0.2. The highest average biogas production was achieved at the 25% recycle ratio of 33.15 x 10-5 L / mg VS. day, with the composition of methane, carbon dioxide and hydrogen sulfide each of 79%; 19%; and 0.006%, with degradation of VS and COD of 39.58% and 66.33% respectively. For the composition of the highest CH4 content obtained at a variation of the 15% recycle ratio which is equal to 85% while for the composition of carbon dioxide, and hydrogen sulfide each is 14%; and 0.0076%.

Co-Authors Alfian Haikel Lubis Arbie Saldi Zusri Ayu Wandira Putri Bambang Trisakti Firman Abednego S. Sibarani Hari Tiarasti Iriany Irma Suraya Luri Adriani M.Taufan Anantama Meliza Nurul Aini Olyvia Putri Wardhani Popphy Prawati Reviana Revitasari Rosdanelli Hasibuan Sri Eka Cahyani Sri Ulina Surbakti Yoshimasa Tomiuchi

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