Rondang Tambun

Rondang Tambun

Universitas Sumatera Utara

H-index: 13

Asia-Indonesia

About Rondang Tambun

Rondang Tambun, With an exceptional h-index of 13 and a recent h-index of 10 (since 2020), a distinguished researcher at Universitas Sumatera Utara, specializes in the field of Particle Technology - Oleochemical.

His recent articles reflect a diverse array of research interests and contributions to the field:

THE EFFECT OF VACUUM PROCESS ON BIODIESEL PRODUCTION FROM PALM KERNEL FATTY ACID DISTILLATE: Original scientific paper

Activation and addition of lipase enzyme in coconut (Cocos nucifera) in direct fatty acid production

EXTRACTION OF SOURSOP LEAVES (ANNONA MURICATA L.) AS A SOURCE OF ZINC CORROSION INHIBITOR IN SODIUM CHLORIDE MEDIUM

Effect of Packaging Type and Storage Time on the Quality of Wheat Flour

An Investigation Shell and Tube Heat Exchanger for Cooling System: A Case Study of Biodiesel Plants Using Lauric Acid

Application of Sodium Silicate from Palm Leaf Ash as Heterogeneous Catalyst in Transesterification of Palm Oil

Review on Advance Catalyst for Biomass Gasification

THE IMPACT OF HYDROGEN PEROXIDE OXIRANE OXYGEN NUMBER CONVERSION IN EPOXY COMPOUNDS DERIVED FROM PURPLE PASSION FRUIT SEEDS (Passiflora edulis var. sims edulis).

Rondang Tambun Information

University

Universitas Sumatera Utara

Position

Lecturer

Citations(all)

506

Citations(since 2020)

403

Cited By

213

hIndex(all)

13

hIndex(since 2020)

10

i10Index(all)

18

i10Index(since 2020)

11

Email

University Profile Page

Universitas Sumatera Utara

Rondang Tambun Skills & Research Interests

Particle Technology - Oleochemical

Top articles of Rondang Tambun

THE EFFECT OF VACUUM PROCESS ON BIODIESEL PRODUCTION FROM PALM KERNEL FATTY ACID DISTILLATE: Original scientific paper

Authors

Rondang Tambun,Bode Haryanto,Anggara Dwita Burmana,Vikram Alexander

Journal

Chemical Industry & Chemical Engineering Quarterly

Published Date

2024

This study examines the operating pressure effect on the manufacture of biodiesel from Palm Kernel Fatty Acid Distillate (PKFAD) by using para-Toluene Sulfonic Acid (PTSA) catalyst. The operating pressures studied are the vacuum pressures of 70 kPa, 80 kPa, 90 kPa, and 100 kPa, which varied with PTSA concentrations of 5%, 10%, 15%, 20%, and 25%, and the molar ratios of methanol and PKFAD are 5: 1, 6: 1, 7: 1, 8: 1, 9: 1, and 10: 1. Biodiesel production from PKFAD was carried out with reaction duration of 120 minutes and reaction temperature at 50 0 C. The amounts of fatty acids converted to biodiesel were calculated based on the initial and acid numbers after the esterification reaction. The results show that a vacuum pressure of 70 kPa to 100 kPa provides a conversion above 96% for all catalyst concentrations and all methanol and PKFAD molar ratios. The highest conversion of PKFAD to biodiesel of 98.6% is obtained at an operating pressure of 80 kPa, a catalyst concentration of 25%, and the molar ratio of methanol and PKFAD is 10: 1. The biodiesel characteristics obtained in this study have met the standards of the American Society for Testing Materials.

Activation and addition of lipase enzyme in coconut (Cocos nucifera) in direct fatty acid production

Authors

Vikram Alexander,Innieke BT Simarmata,Elisabeth ANK Purba,Juan Surya Manurung,Rondang Tambun

Journal

AIP Conference Proceedings

Published Date

2024/3/18

Coconut has an oil content of around 60%-65%, which can be utilized by converting it into oleo chemicals such as paint, soap, medicine, cosmetics, fuel and others. In this study, fatty acids were made directly from coconuts that have lipase enzyme products contained in coconuts and by adding lipase enzymes in coconuts. This research was conducted by preparing grated coconut, then varying the adding in water with the variation of 0% and 40% of the coconut mass and variations of adding lipase enzyme by 1% of the coconut mass. The lipase enzyme used was activated first by using activated carbon and without using activated carbon to obtain higher content of fatty acids. This research was conducted at a room temperature 30 oC and the suitable temperature of the lipase enzyme 35 oC with variations in reaction time 0 hours, 2 hours, 6 hours and 24 hours. The highest yield of fatty acid levels obtained in this …

EXTRACTION OF SOURSOP LEAVES (ANNONA MURICATA L.) AS A SOURCE OF ZINC CORROSION INHIBITOR IN SODIUM CHLORIDE MEDIUM

Authors

Vikram Alexander,Rondang Tambun,Yamaniel Ginting,Bungaran Tambun

Journal

Issues of Chemistry & Chemical Technology/Voprosy Khimii & Khimicheskoi Tekhnologii

Published Date

2024/2/1

Currently, corrosion inhibitors derived from organic materials are preferred in the industry because organic inhibitors are environmentally friendly and cheaper than inorganic inhibitors. This study was aimed at determining the corrosion inhibition ability of soursop leaf extract (Annona muricata L.) towards zinc. Soursop leaves extraction was carried out by maceration method using ethanol as solvent. In this study, the variations in the ratio of the soursop leaves powder weight to solvent volume were 1: 4 g/ml, 1: 6 g/ml, 1: 8 g/ml, and 1: 10 g/ml, and the immersion duration was two days. The extract obtained was studied as a zinc corrosion inhibitor using a 3% sodium chloride solution as the immersion medium. The inhibitor concentration was 2%, with the immersion duration varying from 2 days to 8 days. The results obtained showed that at the ratio of the soursop leaves powder weight to solvent volume of 1: 10, the lowest corrosion rate (2.28 mpy) and inhibition efficiency (61.20%) were observed after eight days of immersion.

Effect of Packaging Type and Storage Time on the Quality of Wheat Flour

Authors

Bima Bima,Muhammad Ibadurrahman,Rondang Tambun

Journal

E3S Web of Conferences

Published Date

2024

The wheat flour quality is influenced by several factors, including the packaging type used and the length of storage time. This research aims to determine the effect of packaging type (polypropylene and polyethylene) and storage time on the wheat flour quality at PT XYZ. The wheat flour quality described refers to SNI No. 01-3751-2018, including water content, ash content, protein content, and organoleptic properties. The research results show that the packaging type and storage time affect the wheat flour quality. The analysis results show that wheat flour produced and packaged using polypropylene and polyethylene with variations in storage time shows a real influence on the wheat flour quality. The analysis results showed that the smallest water content in polyethylene packaging was 13.28% with a storage time of 21 days, the smallest ash content in the polypropylene packaging type was 0.56% with a storage …

An Investigation Shell and Tube Heat Exchanger for Cooling System: A Case Study of Biodiesel Plants Using Lauric Acid

Authors

Anggara Dwita Burmana,Rondang Tambun,Bode Haryanto,Maya Sarah,Vikram Alexander

Journal

Case Studies in Thermal Engineering

Published Date

2024/4/20

Shell and Tube Heat Exchanger (STHE) is a commonly used type of heat exchanger in various industries due to its cost-effectiveness and ease of maintenance. Continuous washing and maintenance of STHE play an important role in influencing both the quality and quantity of production from biodiesel plants. In this particular investigation, the STHE serves as a cooling medium for biodiesel production, with cooling water circulating on the tube side and biodiesel flowing on the shell side. This study focuses on removing silica crust buildup caused by cooling water in the Shell and Tube Heat Exchanger. Furthermore, a Clean-in-Place machine and a 10% citric acid solution with variable washing times of 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, and 12 hours were used for the cleaning process. The results indicate a significant 250% increase in the volumetric flow rate of the cooling tower along with an increase in …

Application of Sodium Silicate from Palm Leaf Ash as Heterogeneous Catalyst in Transesterification of Palm Oil

Authors

Ruri Rizki Syahputri Zuhri,Renita Manurung,Rondang Tambun,Hamidah Harahap

Journal

E3S Web of Conferences

Published Date

2024

This research aims to synthesize sodium silicate based on palm leaf ash as a heterogeneous catalyst for making biodiesel from refined, bleached, deodorized, palm oil (RBDPO). Silica was obtained by calcining palm leaf at a temperature of 700°C for 3 hours, followed by washing using 1 N HCl solution. Synthesis of sodium silicate catalyst was carried out by varying the mole ratio of NaOH:SiO2. The best catalyst was obtained at a NaOH:SiO2 molar ratio of 1.5:1, with a biodiesel yield of 74.468% and an ester content of 97.293%. The sodium silicate catalyst produced in this research performed a good stability by showing high recycling uses. The catalyst could be used up to three times without regeneration produced biodiesel with a yield of 40.018%.

Review on Advance Catalyst for Biomass Gasification

Authors

Zahra Fona,Irvan Irvan,Rondang Tambun,Fatimah Fatimah,Adi Setiawan,Adriana Adriana

Journal

Applied Science and Engineering Progress

Published Date

2024/4/3

The production of renewable energy from biomass waste is a recent innovative approach attracting significant attention. In this field, gasification technology has become an important method, enabling the transformation of biomass into bio-syngas for wide applications, such as electrical power, transportation fuel, cooking fuel, and chemicals. Bio-syngas containing hydrogen, carbon monoxide, carbon dioxide, and methane, are considered a clean and nontoxic fuel. To achieve an effective and efficient gasification process, capable of producing a fuel grade syngas, the use of the catalyst has been reported as the most practical approach. Although this concept is currently in development, it has captured the interest of numerous investigations. The current challenge is the development of a catalyst that can reduce tar, enhance H2 yield at a relatively low temperature, capture CO2, and maintain an extended active lifespan. Therefore, this research aimed to review the novel catalysts discussed in the latest literatures with the ability to produce the highest hydrogen product by using an effective process. The catalysts included natural minerals containing alkali metals, metals, carbon, and composites. Additionally, here also suggested the potential materials should be explored more intensively for gasification catalysts. This review would help to promote and accelerate the research and application of biomass gasification using local existing feedstock. Since the future of energy depended on renewable sources, producing syngas became one of the best options to support energy demand using biomass waste in Indonesia.

THE IMPACT OF HYDROGEN PEROXIDE OXIRANE OXYGEN NUMBER CONVERSION IN EPOXY COMPOUNDS DERIVED FROM PURPLE PASSION FRUIT SEEDS (Passiflora edulis var. sims edulis).

Authors

Mersi Suriani Sinaga,Rondang Tambun,Eduar Efrodo Ndraha,Aravi Zalsa Ramadhan

Journal

Rasayan Journal of Chemistry

Published Date

2024/1/1

One variety of passion fruit that is frequently used to make passion fruit juice is purple passion fruit. The seeds of passion fruit are the portion that is frequently wasted. 12.32% of saturated fatty acids and 87.66% of unsaturated fatty acids are found in purple passion fruit seeds. It is possible to employ this unsaturated fatty acid concentration as an epoxy compound. Finding out how hydrogen peroxide (H2O2) affects the conversion of oxirane oxygen numbers in purple passion fruit seed epoxy compounds is the goal of this study. The epoxidation reaction method is the technique employed. Hydrogen peroxide volume variations of 50, 55, 60, 65, and 70 mL and sulfuric acid catalyst variations of 1, 1.5, and 2% were employed. FTIR measurement in this study revealed the presence of the COC group, indicating the formation of an epoxy compound. The study's findings revealed that the greatest oxirane oxygen conversion number was 200.280%, while the lowest was 85.834%.

Application of soursop leaves (Annona muricata L.) as an iron corrosion inhibition in sodium chloride medium

Authors

Vikram Alexander,Rondang Tambun,Yamaniel Ginting,Bode Haryanto

Journal

AIP Conference Proceedings

Published Date

2024/3/18

Corrosion inhibitor has a function as the best way to afford protection to metals damage from corrosive medium. Nowadays corrosion inhibitors made based on natural recources (organic) to be more extensively used for industry purpose due to organic inhibitors are cheaper and called as green inhibitor due to proper recources to its surroundings than inorganic inhibitor. One or other alternative inhibitor based from natural recources is soursop leaves (Annona muricata L.). The benefit compound from soursop leaves used for corrosion inhibitor is alkaloid. This study aims to find out the soursop leaves powder inhibition capability at various particle sizes and the duration of immersion on iron plates in sodium chloride (NaCl) solution medium. The particle sizes of soursop leaves powder used in this study are 50/70 mesh, 70/100 mesh, 100/120 mesh, and 120/140 mesh with certain concentration of 2%. The immersion …

Remediation of contaminated sand by Cd ions with variation operation: Batch and flushing column with foam and without foam of SDS surfactant

Authors

Bode Haryanto,Rondang Tambun,MZ Siswarni,Vikram Alexander,Tubagus RF Sinuhaji

Journal

South African Journal of Chemical Engineering

Published Date

2023/4/1

An anionic surfactant, Sodium dodecyl sulfate (SDS), was applied to remove Cd ions as contaminants on the sand surface. The remediation operation approach was used, such as batch, flushing column without foam, and with foam of SDS solution. Increasing the SDS concentration is possible to improve the removal ability of Cd ions from the sand surface. For batch, the operation performs the higher removal ability by increasing the shaking rotation per minute (rpm). Fluctuation of the percentage removal efficiency (% RE) was shown by using a flushing column without foam at each flow rate variation. The channeling effect during flushing in the column was proved to be the cause of fluctuation in the removal efficiency. Flushing with foam is possible to increase the removal efficiency from 10% by batch and flushing without foam to about 70% with foam. The increasing flow rate of surfactant SDS solution is possible to …

Natural operation in removing waste compounds within cooking oil using corn cob as adsorbent

Authors

B Haryanto,A Pelawi,SY Sidauruk,V Alexander,R Tambun,E Misran

Journal

IOP Conference Series: Earth and Environmental Science

Published Date

2023/9/1

Cooking oil as foodstuffs that people necessary daily, both industry and households. The high price of cooking oil encourages people to use it repeatedly. The use of used cooking oil continuously can decrease the intrinsic value of the oil and toxic. One method to enhance the quality of used cooking oil is adsorption. The effort to regenerate used cooking oil for sustainability, adsorbents from environment materials are used to adsorb components in used cooking oil in order to raise the standard of cooking oil after purification and can be processed into other products such as biodiesel. Result by this study, the effect of mass and size of the adsorbent on the contact time was observed to reduce the turbidity of used cooking oil. The adsorption process was carried out on used cooking oil with a volume of 100 ml and variations in the mass of the adsorbent from corn cobs were 2 g, 3 g, and 4 g. The size of the adsorbent …

Kombinasi Persamaan Rosin-Rammler dan Metode Pengapungan Batang (Buoyancy Weighing-Bar Method) pada Penentuan Distribusi Ukuran Gelembung Air dalam Kerosin

Authors

Rondang Tambun,Gabriella JJ Sijabat,Theresia J Sidebang,Bungaran Tambun

Journal

Jurnal Teknik Kimia USU

Published Date

2023/3/24

Method) pada Penentuan Distribusi Ukuran Gelembung Air dalam Kerosin. Jurnal Teknik Kimia USU, 12 (1), 24-30.

Natural adsorbent of corncob (Zea mays L.) powder capability in purification of used cooking oil with shaking operation based on turbidity

Authors

Bode Haryanto,Ilham Taufik Nasution,Aflah Fadliani Polem,Rondang Tambun,Vikram Alexander

Journal

Results in Engineering

Published Date

2023/9/1

In the purification process of used cooking oil, an adsorption technique utilizing corncob as the adsorbent can be applied. To optimize the purification, the shaking speed, adsorption time, and turbidity vary. Therefore, this study was conducted in batch operation to determine the effect of suitable adsorption and reactions on shaking speed with variations in mass, size, and the contact time of the adsorbent for 5 h. During the experiment, the used cooking oil was subjected to the adsorption process using 100 mL of adsorbent, with mass variations of 2 g, 3 g, and 4 g. The surface morphology of the adsorbent was characterized by modeling corncob and the oil components of chemical compounds contained in the used cooking oil were examined before and after purification. The parameters observed were measured using Scanning Electron Microscope-Energy Dispersive X-Ray (SEM-EDX), Gas Chromatography-Mass …

Recycling heterogeneous catalyst waste in biodiesel production using methanol and hydrochloric acid: A case study on the washing effect with lauric acid as raw material

Authors

Anggara Dwita Burmana,Rondang Tambun,Bode Haryanto,Maya Sarah,Vikram Alexander

Journal

Case Studies in Chemical and Environmental Engineering

Published Date

2023/12/1

The widespread use of heterogeneous catalysts for biodiesel production has led to the generation of substantial waste. Therefore, it was needed to reduce the solid waste catalyst in the biodiesel industry by exploring the reuse of catalysts. This study focused on the reactivation of used catalysts through the esterification of lauric acid using Amberlyst CM-4 catalyst, with pre-treatments involving methanol washing and HCl reactivation. Gas chromatography was employed to analyze lauric acid and methyl ester while Scanning Electron Microscope provided insights into the pore conditions of the fresh catalyst and used catalyst and Brunauer Emmett Teller provided information into surface area and pore condition. In this study, it was examined how many times the Amberlyst catalyst could be used to catalyze lauric acid to become biodiesel. The limitation of this capability is catalyst conversion above 80 %. The results …

The effectiveness of phytoremediation using water lettuce (Pistia stratiotes) in liquid waste treatment

Authors

R Hartono,R Tambun,H Nasution

Journal

AIP Conference Proceedings

Published Date

2023/3/2

This study aims to analyze the effectiveness of phytoremediation using water lettuce (Pistia stratiotes) in domestic wastewater treatment at Kualanamu International Airport. Based on the hierarchy, Kualanamu International Airport has a hub type essential for transportation connectivity for domestic and international routes. Therefore Kualanamu International Airport is an airport that is very important not only in a short period but for a very long period, so handling the liquid waste problem needs to be done. In this study, improvement of waste treatment methods with phytoremediation with Pistia stratiotes with the addition of aeration, nutrients and time. Based on the result obtained, the longer the contact time and the increasing accumulation of aeration and nutrition can increase the effectiveness of phytoremediation in Pistia stratiotes. In this study, BOD, COD, Fe, Oil and Fat level will be decreased with the addition of the …

Comparison of zinc corrosion rate and iron corrosion rate in chloride acid medium using petai peel as a corrosion inhibitor

Authors

R Tambun,DH Sidabutar,V Alexander

Journal

AIP Conference Proceedings

Published Date

2023/8/8

The purpose of this study is to compare the rate of iron corrosion and the rate of corrosion of zinc in chloride acid media by using inhibitors from Petai peel. Inhibitors from Petai peel are made in the tannin form, extract form and powder form. This research is conducted with the concentration of each inhibitor is 6% and the soaking time is 72 hours. The results obtained indicate that the Petai peel can be used as a zinc corrosion inhibitor and iron corrosion inhibitor, where there is a drastic decrease in corrosion rate on both metals when immersed in chloride acid media with inhibitors compared to immersed without inhibitors. The results show the rate of iron corrosion is lower than the rate of corrosion of zinc for each variation of inhibitors. The lowest corrosion rate of iron and the lowest corrosion rate of zinc are achieved in the use of tannins as inhibitors, namely 18.9325 mpy for zinc plates and 14.0970 mpy for iron …

Hexagonal Rotary Dryer Untuk Peningkatan Efisiensi Pengeringan Biji Kopi Di Desa Sempajaya, Kecamatan Berastagi, Kabupaten Karo

Authors

Rivaldi Sidabutar,Rondang Tambun,M Thoriq Al Fath,Daniel Reymondo Manurung,Venansia Matondang,Reny Arapenta Ginting,Juan Surya Manurung,Josua Manurung

Journal

ABDI SABHA (Jurnal Pengabdian kepada Masyarakat)

Published Date

2023/10/31

Penanganan pascapanen hasil tani masyarakat perlu mendapat perhatian guna meningkatkan mutu hasil panen. Pengeringan merupakan salah satu penanganan pasca panen yang perlu mendapat perhatian. Metode konvensional yang diterapkan oleh petani saat ini masih perlu perbaikan. Petani kopi perlu mendapat perhatian dalam penanganan pasca panen. Penanganan yang umum dilakukan oleh petani adalah pengeringan langsung di bawah cahaya matahari (pengeringan surya alami). Pengeringan ini tidak menjamin keseragaman mutu karena fluktuasi intensitas cahaya matahari. Selain itu kebersihan bahan yang dikeringkan juga tidak terjamin karena dibiarkan di alam terbuka. Hexagonal rotary dryer adalah suatu pengeringan yang memanfaatkan cahaya matahari. Pengeringan ini beroperasi pada pagi, sore, malam hari, atau siang yang mendung/hujan dengan melewatkan udara kering pada media pengering (selongsong). Penggunaan Hexagonal rotary dryer juga bertujuan untuk memudahkan mekanisme penjemuran terutama saat pengumpulan hasil panen saat hujan. Selain itu tujuan lain daripada program ini adalah menghasilkan suatu sistem pengeringan yang mampu menghasilkan hasil tani dengan kualitas yang lebih baik dan seragam, menghasilkan alat pengeringan baru yaitu prototip Hexagonal rotary dryer, serta mendapatkan teknik serta variable pendukung alat pengeringan tersebut.

Pembuatan Soap Noodle dari Minyak Kemiri Sunan Menggunakan Proses Saponifikasi dengan Kapasitas Produksi 350.000 Ton/Tahun dan Tugas Khusus Rancangan Keteknikan Detail Evaporator

Authors

Rondang Tambun

Published Date

2023

The pre-designed factory for making soap noodles from Sunan Hazelnut Oil using a saponification reaction has a production capacity of 350.000 tons/year and operates for 330 days for 1 year. The main process in the pre-designed factory consists of four stages, namely the raw material preparation stage, stages of the process of saponification and purification of glycerin, the mixing stage, and the printing and packaging stage. The specific task that was completed was the detailed engineering design of the evaporator. The evaporator that has been designed has the following specifications:  Material of Construction : Carbon steel SA-283 grade C  Type : Horizontal Tube Evaporator  Tank volume : 47,9 m3  Tank diameter : 3,3 m  Tank height : 11,1 m  Plate thickness : 0,2 in  Number of tube : 82 pieces The factory for making soap noodle from Sunan Hazelnut Oil is planned to be established in the Mabar, Medan Labuhan, Medan City, North Sumatera, Indonesia with a required land area of 9.354 m2, the required workforce of 200 people with a form of a Limited Liability Company (PT) led by a main director with a line system organizational structure and staff. The results of the economic analysis of the soap noodle manufacturing factory from Sunan Hazelnut Oil using the saponification process are as follows: 1. Investment Capital : IDR 7.325.754.758.933,70 2. Production Cost : IDR 5.833.366.259.708,66 3. Net Profit : IDR 1.298.068.911.831,06 4. Profit Margin (PM) : 24.09% 5. Break Even Point (BEP) : 18.47% 6. Return on Investment (ROI) : 17.72% 7. Payment Period (POT) : 5.64 years 8. Network Return (RON) : 29.53% 9. Internal Rate of …

Tannin extraction from Jengkol peel (Pithecellobium jiringa) with maceration method using ethanol as solvent

Authors

R Tambun,R Husna,MD Fitri,Y Ginting,V Alexander

Journal

AIP Conference Proceedings

Published Date

2023/8/8

This study aims to produce tannins from Jengkol peels by maceration using ethanol as a solvent. The maceration method is a cold extraction method which is usually carried out at room temperature by immersing the sample in the extracting solvent while stirring occasionally. The equipment used in this method is very cheap and simple. In this study, the variation of the sample and solvent ratio is 1: 6, 1: 8, and 1: 10, and soaking time is carried out up to 12 days. The results obtained indicate that the maceration method can be used to extract tannins from Jengkol peels by using ethanol as a solvent. The more the amount of solvent used, the higher the amount of tannin produced, where the highest tannin content obtained in the extract with this maceration method is 8.98%, which is obtained in the sample and solvent ratio is 1: 10, and the extraction time is 12 days.

Gasification of Coffee Parchment as Potential Method for Coffee Agro-Industry Waste Utilization

Authors

Zahra Fona,Adi Setiawan,Irvan Irvan,Rondang Tambun,Fatimah Fatimah,Muhammad Hadiansyah,Zein Ramadani

Journal

Jurnal Rekayasa Kimia & Lingkungan

Published Date

2023/10/31

Coffee parchment is a lignocellulosic waste material which has a potential to transform into synthesis gas. This research aims to study the feasibility of coffee parchment conversion under downdraft gasification with ‘auto-heating’supply method. The temperature profile in each zone of the reactor was investigated as the effect of different equivalence ratio (ER) as well as the producer gas characteristics such as ignition time, flame duration, colour and temperature, carbon conversion and producer gas composition. Initially, coffee parchment collected from dehulling process was sun-dried three to four days. The gasification was ignited by firing ca. 300 g of wood charcoal inside the reactor before the coffee parchment loaded, then the reactor was tighly closed. Once the combustible gas was produced, the gasification time was measured. The result shows that the highest operational temperature inside the reactor was 715.66 C within the combustion zone. The biomass conversion tends to increase by the increasing of ER, but the producer gas might dilute by more carbon dioxide production, and nitrogen input into the producer gas which indicated by the flame duration, colour, and temperature. Introducing an ER of 0.3 into the gasification reactor has provided adequate amount of oxygen to convert the coffee parchment into producer gas. This investigation suggests that coffee parchment is feasible to be converted into syngas. However, providing an advance process integrated to cleaning system would be required in the future to obtain a fuel grade syngas.

See List of Professors in Rondang Tambun University(Universitas Sumatera Utara)

Rondang Tambun FAQs

What is Rondang Tambun's h-index at Universitas Sumatera Utara?

The h-index of Rondang Tambun has been 10 since 2020 and 13 in total.

What are Rondang Tambun's top articles?

The articles with the titles of

THE EFFECT OF VACUUM PROCESS ON BIODIESEL PRODUCTION FROM PALM KERNEL FATTY ACID DISTILLATE: Original scientific paper

Activation and addition of lipase enzyme in coconut (Cocos nucifera) in direct fatty acid production

EXTRACTION OF SOURSOP LEAVES (ANNONA MURICATA L.) AS A SOURCE OF ZINC CORROSION INHIBITOR IN SODIUM CHLORIDE MEDIUM

Effect of Packaging Type and Storage Time on the Quality of Wheat Flour

An Investigation Shell and Tube Heat Exchanger for Cooling System: A Case Study of Biodiesel Plants Using Lauric Acid

Application of Sodium Silicate from Palm Leaf Ash as Heterogeneous Catalyst in Transesterification of Palm Oil

Review on Advance Catalyst for Biomass Gasification

THE IMPACT OF HYDROGEN PEROXIDE OXIRANE OXYGEN NUMBER CONVERSION IN EPOXY COMPOUNDS DERIVED FROM PURPLE PASSION FRUIT SEEDS (Passiflora edulis var. sims edulis).

...

are the top articles of Rondang Tambun at Universitas Sumatera Utara.

What are Rondang Tambun's research interests?

The research interests of Rondang Tambun are: Particle Technology - Oleochemical

What is Rondang Tambun's total number of citations?

Rondang Tambun has 506 citations in total.

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