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All Journal Jurnal Teknik Kimia USU Agrointek Religio : Jurnal Studi Agama-agama JOURNAL OF EARTH ENERGY ENGINEERING Jurnal Hasil Penelitian Industri Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Gema Kampus IISIP YAPIS Biak Perspektif Komunikasi; Jurnal Ilmu Komunikasi dan Komunikasi Bisnis Jurnal Teknik Kimia USU
Rosdanelli Hasibuan
Department Of Chemical Engineering, Faculty Of Engineering, Universitas Sumatera Utara, Jl. Almamater, Padang Bulan, Medan 20155, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Social Sciences

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PROSES IMPREGNASI ZnCl2 PADA PROSES PEMBUATAN KARBON AKTIF TEMPURUNG KEMIRI (ZnCl2 Impregnation Process in Production of Candellnut Shell Activated Carbon) Sylvia, Hartina; Turmuzi, Muhamamd; Hasibuan, Rosdanelli
Jurnal Hasil Penelitian Industri Vol 27, No 1 (2014)
Publisher : Baristand Industri Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (23.353 KB)

Abstract

The effect on the ZnCl2 impregnation process Candellnut shell activatedcarbon, followed by pyrolysis process. variations in the concentration used ZnCl2 2.5; 7.5;10; 15; 30%, pyrolysis temperature 450, 500, 550oC with a 90, 120 and 180 minutes. Thetesting result of iodine absorption showed the greatest results using ZnCl2 10%,temperature 4500C, for 2 hours. Without and with Candellnut shell impregnation alsoaffect the outcome of Thermal Gravimetry Analysis which use traditional impregnationwith a shift during pyrolysis temperature, operation time is marked by the occurrence ofmass loss. Shifting patterns of functional groups were analyzed using Fourier TransformInfra Red to CH aliphatic, aromatic CH, OH bond, the C=H, CN bond and the C=O. Theresult analysis of activated carbon after impregnation with Teller Brunauer Emmettmethode obtained 589 m2/g of surface area.
Effect of impeller types on saponification reaction using stirred tank reactor Hasibuan, Rosdanelli; Parsaulian R, Rahmad; Adventi, Fransiska; Manurung, Renita; Hidayati, Juliza
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (357.583 KB) | DOI: 10.32734/abdimastalenta.v4i2.4190

Abstract

The choice of impeller type is an important factor in maximizing the performance of a stirred tank reactor in saponification process. This study aims to determine the type of impeller that can produce the highest reaction rate by taking into account changes in alkali concentration in saponification reactions so as to obtain a shorter residence time. The saponification process was carried out by reacting 30% oil with alkali (KOH) at operating conditions 70C, stirring speed of 400 rpm for 45 minutes using 4 types of impellers namely paddle-2 blades, pitch blade turbine 45°-2 blades, paddle-4 blades, pitch blade turbine 45°-4 blades. Testing of alkali concentration was carried out every 5 minutes until the reaction was complete. Alkali concentration was obtained at the end of the reaction using a paddle-2 blades impeller of 0.182 M with a conversion of 97.35%, a pitch blade turbine 45°-2 blades of 0.142 M with a conversion of 97.93%, paddle-2 blades of 0.106 M with conversion of 98.46%, pitch blade turbine 45°-4 blades of 0.100 M with conversion of 98.54%.
Application of Pineapple Skin Waste as a Source of Biosolvent for Use as Wax Inhibitor Muhammad Khairul Afdhol; Tomi Erfando; Fiki Hidayat; Rosdanelli Hasibuan; Muhammad Yudatama Hasibuan; Chalidah Pratiwi Siregar
Journal of Earth Energy Engineering Vol. 9 No. 2 (2020): OCTOBER
Publisher : Universitas Islam Riau (UIR) Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25299/jeee.2020.3922

Abstract

Wax paraffin deposition is a problem faced in the pipeline for petroleum industries that they blockage the partial or full inside the pipe, which will decrease the production rate. One of the treatments is to use the preventive methods called wax inhibitors which are expected to inhibit the crystallization of paraffin wax, and bio-solvent is included. Hydrolysis and fermentation technique are used to produced bio-solvent. Hydrolysis aims to break lignin and hemicellulose, damage the crystal structure, and increase the porosity of the material. At the same time, the occurrence of pentose changes and some glucose into ethanol is present in the fermentation process. Then, purified by the distillation process to obtain bio solvent products that are applied with waxy crude oil can reduce the pour point value of crude oil. From the hydrolysis process with five variations of acid percentage, the amount of reducing sugars increase. By increasing temperature from 50 ° C to 100 ° C, the reducing sugars continues to increase until it reaches the optimal point of 18.2 ° Brix. The amount of inoculant also affects the level of bio-solvent where the optimum results using inoculants are 0.015 g/mL, which produces 6% levels of bioethanol. The high ethanol content of 2% had a density value of 0.979 g/mL. The best °API at 5% is 13.901, and the average value is about 13.0945, where the best viscosity values for ethanol content of 6% are 0.814. Bioethanol testing using waxy crude oil is carried out with the bioethanol content of 6%. The addition of the ethanol contents only decreased the pour point 2-3℃. At sample, #LGK19 experienced a 3°C drop in pour point from 45°C to 42°C. Therefore, it can be concluded that bioethanol used as a solvent can potentially inhibit paraffin deposition.
HIGH VALUED LIMONENE IN ESSENTIAL OIL EXTRACT FROM LIME PEEL WASTE FOR PARFUM INDUSTRY Rosdanelli Hasibuan; Rita Sundari; Elisabeth Gultom; Rini Anggraini; Juliza Hidayati
AGROINTEK Vol 15, No 4 (2021)
Publisher : Agroindustrial Technology, University of Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrointek.v15i4.10098

Abstract

Limonene in essential oils is highly valuable attracts great interest of consumers due to its specific fragrance. It is not surprising that many big perfume industries are looking for high purified limonene found in essential oils of certain fruits and flowers. This study investigates the extraction process of essential oil from lime peel waste. This study has used two extraction methods, i.e.  maceration method and Soxhlet technique. Two types of organic solvent applied, i.e. hexane and ethanol. This work studies the effect of extraction time, type of organic solvent, and extraction method on yield of extraction. Characterization studies as FTIR (Fourier Transform Infra Red) Spectroscopy related to type of chemical bonding of limonene in essential oil and GC-MS (Gas Chromatography – Mass Spectrometry) related to limonene fragmentation have also investigated. 
Struktur Nalar Arab-Islam menurut ‘Âbid Al-Jâbirî M. Faishol
Religió: Jurnal Studi Agama-agama Vol. 3 No. 2 (2013): September
Publisher : Department of Religious Studies, Faculty of Ushuluddin and Philosophy, Sunan Ampel State Islamic University Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (439.037 KB)

Abstract

The project of ‘Âbid Al-Jâbirî’s thoughts has become epistemological critic to traditional frame of Islam-Arab knowledge through analyzing socio-political background on the logic of Arab formulation. According to Al-Jâbirî, the logic of Arabic thought could be devised into three methods: bayâni, ‘irfâni and burhâni. Therefore, the structure of Islam-Arab culture has occurred based on: (1) authoritative texts—because the logic of Arab is exceedingly based on religious texts, (2) authoritative salaf, that is, focused on ‘ulama’s considerations, and (3) authoritative permissivism along with anti-causality (sult}ah at-tajwîz al-lâsababiyyah). Hence, Arabic culture becomes unproductive, poor of concept and theory. As a solution, Al-Jâbirî invites to contextualize the spirit of critic such as rational-empiricism of Ibn H{azm and al-Shât}ibî on fiqh, Ibn Rushd on philosophy, Ibn Khaldûn on sociology, etc. This article will probe specifically about ‘Âbid Al-Jâbirî’s reform thought. Al-Jâbirî’s thinking distinctiveness lies in the epistemological critique conducted on the science that develops in the Arab-Islamic civilization. The epistemological critique becomes a realm of science that not much attention, especially by Muslim thinkers. Al-Jâbirî’s epistemological critique offers to the Muslim world an attempt to reconstruct the building of reason-epistemic knowledge to keep pace and change its Islamic world towards the progress of civilization.
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)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jutek.v1i1.116

Abstract

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 CO2 at 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.Keywords : biogas, concentration of Fe, fermentation of POME, trace metal, TS, VS.
PENENTUAN EFISIENSI INHIBISI KOROSI BAJA MENGGUNAKAN EKSTRAK KULIT BUAH KAKAO (Theobroma cacao) Sri Hermawan, Yuli Rizky Ananda Nasution, Rosdanelli Hasibuan
Jurnal Teknik Kimia USU Vol 1, No 2 (2012)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jutek.v1i2.166

Abstract

Cocoa peel extract is a natural inhibitor that can be used to inhibit the corrosion reaction rate. This research begins by extracting cocoa pods by maceration followed by evaporation on rotary vacuum evaporator and extracts used as the inhibitor with concentration 600, 800 and 1000 ppm, using steel 1 × 2 cm and  the thickness is 0,1 cm to determine the corrosion rate and corrosive medias are sea water, rainwater and sulfuric acid 1 M . The highest inhibition efficiency generated is 93,06% with concentration of 600 ppm inhibitor in rainwater corrosive media; which means that cocoa peel extract more efficiently used in rainwater corrosive media. Keywords: cocoa, maceration, corrosive media, inhibition efficiency
PENENTUAN EFISIENSI INHIBISI REAKSI KOROSI BAJA MENGGUNAKAN EKSTRAK KULIT BUAH MANGGIS (Garcinia mangostana L) Yuli Rizky Ananda Nasution, Sri Hermawan, Rosdanelli Hasibuan
Jurnal Teknik Kimia USU Vol 1, No 2 (2012)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jutek.v1i2.171

Abstract

Garcinia mangostana peel extract is a natural inhibitor that can be used to inhibit the corrosion reaction rate. This research begins by extracting Garcinia Mangostana pods by maceration followed by evaporation and extracts used as the inhibitor with concentration 600, 800 and 1000 ppm, with the test sample of corrosion is steel 1 × 2 cm with the thickness is 0,1 cm and corrosive medias are sea water, rain water and sulfuric acid 1 M. The highest inhibition efficiency generated is 99,22% with ethanol solvent at concentration of 800 ppm inhibitor in rain water corrosive media; which means that Garcinia mangostana peel extract more efficiently used in rain water corrosive media. Keywords: garcinia mangostana, corrosive media,reaction rate,  inhibition efficiency
PENENTUAN KONDISI OPTIMUM SUHU DAN WAKTU KARBONISASI PADA PEMBUATAN ARANG DARI SEKAM PADI Satriyani Siahaan, Melvha Hutapea, Rosdanelli Hasibuan
Jurnal Teknik Kimia USU Vol 2, No 1 (2013)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jutek.v2i1.1324

Abstract

Charcoal is a solid porous material containing 80 - 90 % of carbon being produced from combustion at high temperatures (carbonization ), that the material only carbonized and not oxidized become carbon dioxide. The research is aimed to know the optimum conditions on the process of carbonization from the rice husks. The carbonization process conducted in temperatures 400 oC, 500 oC, and 600 oC with variations in time 30 minutes, 60 minutes, 90 minutes and 120 minutes. Optimum conditions carbonization for rice husk at temperature 400 oC for 120 minutes with a carbon content 41,3 %, moisture content 6,1 %, ash content 32,6 % and volatile matter content 20,5 %. Keywords : charcoal, carbonization, rice husk
EKSTRAKSI KATEKIN DARI DAUN GAMBIR (Uncaria gambir roxb) DENGAN METODE MASERASI Desta Donna Putri Damanik, Nurhayati Surbakti, Rosdanelli Hasibuan
Jurnal Teknik Kimia USU Vol 3, No 2 (2014)
Publisher : Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (455.109 KB) | DOI: 10.32734/jutek.v3i2.7009

Abstract

Catechins are a major components in the plant gambier. Beside catechins, there are several other components such as acid catechu tannat, quersetin, red catechu, gambier flouresin, fats and waxes. More than 80% of  gambier production in Indonesia comes from the province of West Sumatra and North Sumatra, mainly in Limapuluh and Pakpak Bharat. Extraction of catechins from gambir leaf was performed by means of maceration that is soaking with a solvent polar. Maceration is carried out by temperature variations, 30°C, 40°C, 60°C and 80°C; maceration of time that is 1 hour, 6 hours, 12 hours, and 24 hours; and the type of solvent is aquadest, 96% ethanol, 95% ethyl acetate, and a mixture of 96% ethanol and 95% ethyl acetate (1:1). The results were filtered to obtain the filtrate which is then concentrated by rotary vacuum evaporator to test the levels of catechins, moisture content, and ash content. Based on this research the highest levels of catechins obtained the maceration temperature operating conditions of 60 ° C with a time of 6 hours maceration and used  95 % ethyl acetate as solvents in the amount of 87.14 % to 0.925 % moisture content and ash content of 0.04 % .
Co-Authors Adventi, Fransiska Alfikri Ridhatullah, Muhammad Amelia, Reny Elvira Chalidah Pratiwi Siregar Dian Novita Elisabeth Gultom Fiki Hidayat Hamdanah Hasibuan Hartina Sylvia, Hartina Iriany Irvan Juliza Hidayati Muhamamd Turmuzi, Muhamamd Muhammad Khairul Afdhol Muhammad Yudatama Hasibuan Pardede, Hans Martua Parsaulian R, Rahmad Renita Manurung Rini Anggraini Risma Fazillah Rita Sundari Sukriadi Sukriadi Tomi Erfando Ummah, Nisa’a Mufidatul Vikram Alexander Vikram Alexander Viqry Pramananda Yovani Nissi Madani