Publications Prof. Dr. Eng. Rondang Tambun, S.t., M.t. | Faculty of Engineering Universitas Sumatera Utara

Characterization of Biomass Ash From Direct Combustion of Coffee Parchment and the Potential Application as Gasification Catalyst

RONDANG TAMBUN , IRVAN , FATIMAH , ZAHRA FONA

Qualitative Analysis and Functional Groups Identification of Flavonoid From Butterfly Blue Pea (Clitoria ternatea) Flower Extract

RONDANG TAMBUN , ZUHRINA MASYITHAH , ULFATUNNISA , VIKRAM ALEXANDER

The effect of solvent ratio and time on tannin extraction from ketapang leaves (Terminalia Catappa L.) with ultrasonic assisted method

RONDANG TAMBUN , BRYAN TUAH RPIMA SIAHAAN , PATRICIA RACHEL WARUWU , VIKRAM ALEXANDER

Vacuum pressure application in biodiesel production from refined bleached deodorized palm olein

RONDANG TAMBUN , VIKRAM ALEXANDER , ANGGARA DWITA BURMANA

Corrosion effects on a leakage steam control valve: analysis and risk assessment on the biodiesel plant case study

RONDANG TAMBUN , DR IRIANY, IR,MSC , DR.TASLIM, IR, MSC , ANGGARA DWITA BURMANA

Comparative corrosion resistance of aluminum in NaCl and HCl medium using salam leaves (Syzygium polyanthum) extract as corrosion inhibitor

RONDANG TAMBUN , MUHAMMAD THORIQ AL FATH. , AGNES KARTIKA MANURUNG , TIATIRA DERMAWATI NAPITUPULU , VIKRAM ALEXANDER

Life cycle assessment of reusing by-products from esterification reaction: Through the acidification process

RENITA MANURUNG , MAYA SARAH , DR IRIANY, IR,MSC , ANGGARA DWITA BURMANA , RONDANG TAMBUN

Carbon footprint of biodiesel production using waste cooking oil: Performance and analysis through amberlite HPR 9000 SO4 as catalyst

RONDANG TAMBUN

Investigation of the heat transfer coefficient in a plate heat exchanger for cooling product before storage: Based on a biodiesel plant case

RONDANG TAMBUN , MUHAMMAD THORIQ AL FATH.

Quality Analysis of Biobriquettes Combination Ratio of Oil palm Frond and Water Hyacinth Waste with Durian Seed Flour Adhesive

MERSI SURIANI SINAGA , RONDANG TAMBUN

Natural corrosion inhibitors derived from powder, concentrated extract and tannin of ketapang (Terminalia catappa L.) leaves for iron protection in sodium chloride solutions

RONDANG TAMBUN

The Effect of Vegetable Oil Fatty Acid Composition on The Psysico-Chemical Properties of Biodiesel: A Review

RONDANG TAMBUN

Competence of corncob (Zea mays L.) powder with HCl activation as adsorbent to purify waste cooking oil: Reference in the batch adsorption process

RONDANG TAMBUN , BODE HARYANTO

The Effect of Particle Size, Activation Type and Contact Time of Cocoa Pod Husk (Theobroma Cacao L.) Activated Carbon on Artificial Waste Chromium Adsorption Capability

ARI FERNANDO PANJAITAN , EVA EKLESIA SITANGGANG , HENOKH SITORUS , VIKRAM ALEXANDER , RONDANG TAMBUN

Physico-chemical characteristics of coffee parchment and its combustion residue to delineate the components required for gasification catalyst

RONDANG TAMBUN , ADI SETIAWAN , IRVAN , FATIMAH , ZAHRA FONA

Physico-chemical characteristics of coffee parchment and its combustion residue to delineate the components required for gasification catalyst

ZAHRA FONA , IRVAN , RONDANG TAMBUN , FATIMAH , ADI SETIAWAN

Reusability of amberlyst CM-4 catalyst through continuous methanol washing with nitrogen gas in biodiesel production using lauric acid as feedstock

RONDANG TAMBUN , BODE HARYANTO , VIKRAM ALEXANDER , ANGGARA DWITA BURMANA , MAYA SARAH

Biodiesel production using waste cooking oil and Amberlite 62i as heterogeneous catalyst: Sustainability energy solution

RONDANG TAMBUN , ANGGARA DWITA BURMANA , DWINA RAHMAYANI HASIBUAN , ERWIN NAZRI , DR IRIANY, IR,MSC

Utilization of natural and chemical activation corncob as adsorbent for continuous purification of used cooking oil using adsorption column

BODE HARYANTO , RONDANG TAMBUN , VIKRAM ALEXANDER , JASMINE WINARTA , GRACE IVANA BATSEBA BRM TARIGAN , JEREMIA TOGI CHRISTIAN SIADARI

Comparison of the Carrier Compound Capabilities of Silica Gel, Amberlite XAD-2 and DEAE Sephadex A-50 in the Immobilization Process of the Lipase Enzyme in the Hydrolysis Reaction of Palm Olein (Elaesis guineensis)

BODE HARYANTO , FBA FITRIANI , VIKRAM ALEXANDER , RONDANG TAMBUN

Comparison of the Carrier Compound Capabilities of Silica Gel, Amberlite XAD-2 and DEAE Sephadex A-50 in the Immobilization Process of the Lipase Enzyme in the Hydrolysis Reaction of Palm Olein (Elaesis guineensis)

FBA FITRIANI , RONDANG TAMBUN , BODE HARYANTO , Vikram Alexander

The Effect of Pyrolysis Temperature and Raw Materials Mass Comparison on the Characteristics of Briquettes from a Mixture of Rice Husk (Oryza sativa L.) and Jengkol Peel (Pithecellobium jiringa) Using Starch Adhesives

ZAKIYAH NURUL AINI , DANDY RIFKI MULYA , VIKRAM ALEXANDER , RONDANG TAMBUN

Durian Peel (Durio zibethinus) Utilization as an Adsorbent in the Purification of Acidified Crude Glycerol

VIKRAM ALEXANDER , DANIEL REYMONDO MANURUNG , ADOLF PARASIAN RITONGA , RONDANG TAMBUN , BODE HARYANTO

SDS and TX-100 performance in removing Cd ion from contaminated sand in flushing column

BODE HARYANTO , RONDANG TAMBUN , VIKRAM ALEXANDER , TUBAGUS RAYYAN FITRA SINUHAJI , Chien-Hsiang Chang

An investigation shell and tube heat exchanger for cooling system: A case study of biodiesel plants using lauric acid

BODE HARYANTO , VIKRAM ALEXANDER , ANGGARA DWITA BURMANA , RONDANG TAMBUN , MAYA SARAH

Combination of addition and activation of lipase enzyme in peanut seed (Arachis hypogaea L.) for direct fatty acid production

ARI FERNANDO PANJAITAN , RONDANG TAMBUN , DEBBY THEO DORA BR SITANGGANG , VIKRAM ALEXANDER

Effect of methanol purity on biodiesel production from lauric acid using esterification reaction

ANGGARA DWITA BURMANA , VIKRAM ALEXANDER , MAYA SARAH , RONDANG TAMBUN , BODE HARYANTO

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

RONDANG TAMBUN , BIMA , MUHAMMAD IBADURRAHMAN

Review on Advance Catalyst for Biomass Gasification

IRVAN , ZAHRA FONA , ADRIANA , RONDANG TAMBUN , FATIMAH , ADI SETIAWAN

The Impact Of Hydrogen Peroxide Oxirane Oxygen Number Conversion In Epoxy Compounds Derived From Purple Passion Fruit Seeds

MERSI SURIANI SINAGA , RONDANG TAMBUN , EDUAR EFRODO NDRAHA , ARAVI ZALSA RAMADHAN

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

RONDANG TAMBUN , BODE HARYANTO , VIKRAM ALEXANDER , YAMANIEL GINTING

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

RONDANG TAMBUN , VIKRAM ALEXANDER , INNIEKE BASANI THERESIA SIMARMATA , ELISABETH ANISA NOVI KARYANI PURBA , JUAN SURYA MANURUNG

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

VIKRAM ALEXANDER , YAMANIEL GINTING , BUNGARAN TAMBUN , RONDANG TAMBUN

Comparison of natural corn cob and carbon corn cob in the purification of used cooking oil with shaker operation

RICHARD FELIX JONATHAN SINAGA , SILVIA VERONIKA BR SEMBIRING , ASTRINA HUTABARAT , VIKRAM ALEXANDER , RONDANG TAMBUN , BODE HARYANTO

The effect of vacuum process on biodiesel production from palm kernel fatty acid distillate

BODE HARYANTO , RONDANG TAMBUN

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

RONDANG TAMBUN , BODE HARYANTO , MAYA SARAH

The Effect Of Reaction Time On Kinematic Viscosity and Conversion In The Manufacturing of Bio-Lubricant Alternatives From Oleic Acid With Palm Kernel Shell Catalyst As An Approach to Renewable Energy

RONDANG TAMBUN , MERSI SURIANI SINAGA , MAULIDA

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

RONDANG TAMBUN , ANELLA PELAWI , OCTAVIA , STEPHANIE YOSEPHA SIDAURUK , VIKRAM ALEXANDER , BODE HARYANTO , ERNI MISRAN

Environmental sustainability through the utilization of corn cobs as an adsorbent material in waste cooking oil

ILHAM TAUFIK NASUTION , Aflah fadliani polem , OKTAVIA MERTA SITOHANG , VIKRAM ALEXANDER , RONDANG TAMBUN , BODE HARYANTO , ZUHRINA MASYITHAH

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

RONDANG TAMBUN

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

RONDANG TAMBUN

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

BODE HARYANTO , RONDANG TAMBUN

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

SISWARNI MZ , RONDANG TAMBUN , BODE HARYANTO

Corn stalk (Zea mays) modified by nitrate acids (HNO3) to adsorb dissolved copper ions (CU +2) in adsorption column

RONDANG TAMBUN , BODE HARYANTO

THE USE OF PANDAN LEAVES (Pandanus amaryllifolius Roxb.) AS IRON CORROSION INHIBITOR IN HCl MEDIUM

RONDANG TAMBUN

PROVISION OF CARBOXYMETHYL CELULLOSE MATERIAL BASED ON DURIAN SEED POWDER

RONDANG TAMBUN , MUHAMMAD HENDRA S GINTING , MAULIDA

CRUDE PALM OIL GUM AS ADSORBENT TO REDUCE RESEARCH OCTANE NUMBER AND BOILING POINT OF BIOETHANOL FOR GASOHOL E-85

MINTO SUPENO , RONDANG TAMBUN

APPLICATION OF JENGKOL PEEL (Pithecollobium jiringa) AS IRON CORROSION INHIBITORS IN HYDROCHLORIC ACID MEDIUM

RONDANG TAMBUN

SYNTHESIS, CHARACTERIZATION, AND APPLICATION OF ZNO/ZSM-5 AS CATALYST IN THE CRACKING PROCESS OF PALM METHYL ESTERS

RONDANG TAMBUN , RENITA MANURUNG , DR.TASLIM, IR, MSC , IRVAN

The Effect of Reactant Molar Ratio to Performance of H2SO4 Catalyst and Para-Toluene Sulfonic Acid Catalyst in the Esterification of Palm Fatty Acid Distillate into Biodiesel

RONDANG TAMBUN

CORN STALK (Zea mays L.) ABILITY IN REMOVING DISSOLVE HEAVY METAL CADMIUM ION (II) IN CONTINUOUS ADSORPTION COLUMN (DOWN FLOW)

BODE HARYANTO , SISWARNI MZ , RONDANG TAMBUN

EFFECT OF OPERATING TEMPERATURE ON BIODIESEL PRODUCTION FROM PALM FATTY ACID DISTILLATE BY USING THE AMBERLYST CATALYST

RONDANG TAMBUN

The use of Soxhletation Method and Microwave-Assisted Extraction in Extracting Tannin from Jengkol Peel (Pithecellobium jiringa)

RONDANG TAMBUN

Effect of type and shape of rods in separation time determining of glycerol in biodiesel by the buoyancy weighing bar method

RONDANG TAMBUN

Application of Petai Peel as an Iron Corrosion Inhibitor in Sodium Chloride Medium

RONDANG TAMBUN

Performance Comparison of Maceration Method, Soxhletation Method, and Microwave-Assisted Extraction in Extracting Active Compounds from Soursop Leaves (Annona muricata): a Review

RONDANG TAMBUN

THE UTILIZATION OF BANANA PEEL AS AN ORGANIC CORROSION INHIBITOR OF ZINC IN CHLORIDE ACID MEDIUM

RONDANG TAMBUN

The potential of petai peel as a zinc corrosion inhibitor in sodium chloride solution

RONDANG TAMBUN

Adsorbing on Dissolved Copper Metal by Charcoal Rambutan Rods

RONDANG TAMBUN , BODE HARYANTO

Effect of Reaction Time on Biodiesel Production from Palm Fatty Acid Distillate by Using PTSA as a Catalyst

BODE HARYANTO , RONDANG TAMBUN

The capability of buoyancy weighing bar method in determining the separation time of biodiesel and glycerol at various concentrations

RONDANG TAMBUN

Activating Lipase Enzyme in the Candlenut Seed to Produce Fatty Acid Directly from Candlenut Seed

RONDANG TAMBUN

Extraction of tannin from garlic skins by using microwave with ethanol as solvent

DR IRIANY, IR,MSC , RONDANG TAMBUN

Measurement and Estimation of the Particle Size Distribution by the Buoyancy Weighingâ€“Bar Method and the Rosinâ€“Rammler Equation

RONDANG TAMBUN

Sizes influences of weighing bar and vessel in the buoyancy weighing-bar method on floating particle size distribution measurements

RONDANG TAMBUN

Definition of the new mean particle size based on the settling velocity in liquid

RONDANG TAMBUN

Size distribution measurement of floating particles in the Allen region by a buoyancy weighing-bar method

RONDANG TAMBUN