Publikasi Prof. Dr. Eng. Rondang Tambun, S.t., M.t. | Fakultas Teknik Universitas Sumatera Utara

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

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

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

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

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

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 Packaging Type and Storage Time on the Quality of Wheat Flour

RONDANG TAMBUN , BIMA , MUHAMMAD IBADURRAHMAN

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

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

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

RONDANG TAMBUN

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

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

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

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

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

RONDANG TAMBUN

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

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

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

RONDANG TAMBUN

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

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