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World Chemical Engineering Journal
Published by Universitas Sultan Ageng Tirtayasa
ISSN : -     EISSN : 24432261     DOI : https://dx.doi.org/10.62870/wcej.v8i1.26617
Core Subject : Engineering,
Chemical Engineering, Chemistry & Bioengineering
WCEJ publishes original papers and reviewed papers on the fundamental, theoretical as well as applications of Chemical Engineering. WCEJ is published two times a year. This journal covering some aspects of chemical engineering, which are environmental chemical engineering, chemical reaction engineering, bioprocess-chemical engineering, materials synthesis and processing.
Arjuna Subject : Teknik Kimia (semua kategori) - Teknik Kimia (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "VOLUME 6 NO. 1 JUNE 2022" : 5 Documents clear
The Effect of Operating Conditions on the Purification of Waste Cooking Oil over a Natural Zeolite Catalyst Suhendi, Endang; Heriyanto, Heri; Nur Avina, Mely; Andriani, Kharina
World Chemical Engineering Journal VOLUME 6 NO. 1 JUNE 2022
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v6i1.15561

Abstract

The waste of cooking oil is a danger to human health. The Heating of waste cooking oil at high temperatures will cause an increase in free fatty acid (FFA) and peroxide number in the oil. Therefore, waste cooking oil needs to be processed before being reused. This paper studies the effect of operation conditions on the purification of waste cooking oil over a natural zeolite catalyst. The stage of the purification process is despicing, neutralization, and bleaching process. The despicing process injected the steam to remove impurities. The effect of the mass flow rate of oil at 1.051; 0.456 and 0.139 Kg/s on FFA value was studied. After that, the neutralization and bleaching process. The Bleaching process was performed using zeolite adsorbent. The results show that the purification method of waste cooking oil decreases of the color of oil, free fatty acid, and peroxide value.  In this study, the best performance of the despicing process at the mass flow rate of the oil is 0.139 Kg/s, a temperature of 60°C with 500 rpm stirring for the neutralization process and bleaching process of natural zeolite.  The value of free fatty acid content (FFA) is 2.22 mg. KOH/mg fat, peroxide is 6.98 mekO2/kg, color degradation is 66.93% and water content is 0.32% (w/w).
Rice Husk Extract and Damar Resin as Corrosion Preventing Bio Coating Materials for Mild Steel in NaOH Solution Pramudita, Marta; Novita, Lita; Ernawati, Hera; Hidayatullah, Andra; Pitaloka, A.B.
World Chemical Engineering Journal VOLUME 6 NO. 1 JUNE 2022
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v6i1.15713

Abstract

Corrosion is damage due to chemical reactions between metals or metal alloys with their environment. The use of coatings can reduce the rate of corrosion, but it is constrained by stability for a long time, so it is necessary to try other protections against mild steel that can cover the metal with a coating material. This research focuses on mild steel's bio coating expertise using 1M NaOH corrosive media using natural ingredients of rice husk extract and dammar resin. Rice husk and resin are plants that can be used as bio coating materials. Rice husk extract contains several compounds that can be used to inhibit the corrosion rate, one of which is silica. In contrast, dammar resin is a natural polymer with flexible and stable properties that can prevent corrosion. This study aimed to determine the effect of the components of the bio coating material (rice husk extract and dammar resin) on the ability to protect mild steel from 1M NaOH corrosive media by calculating the corrosion rate and efficiency of the bio coating material. There are five stages in the research: the sample preparation stage, the stage of making latex solutions, the stage of making bio coating products, the stage of metal coating with bio coating materials, and the inhibition efficiency testing phase. The method used is the weight loss method to determine the rate of corrosion formed. This study obtained the highest inhibition efficiency (IE%) of 83.23% at a bio coating concentration of 1500 ppm, with a temperature of 40˚C, and an immersion time of 1 hour.
Organoleptic Observations of the Preservation of Mackerel Fish using Liquid Smoke from Coconut Shells Pyrolysis Aladin, Andi; Yani, Setyawati; Syarif, Takdir; Modding, Basri; Wiyani, Lastri
World Chemical Engineering Journal VOLUME 6 NO. 1 JUNE 2022
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v6i1.15914

Abstract

 Liquid smoke is a by-product of a pyrolysis process of coconut shells to produce coconut shell charcoal. The liquid can be used as an alternative fish preservative. Traditionally, the fish preservation is conducted by direct smoking of the fish on a coal or biomass burning. However, due to the presence of benzopyrene compounds in the direct smoking process, the smoked fish produced may pose a health risk as benzopyrine is carcinogenic. In this research, a free benzopyrene liquid smoke obtained from the pyrolysis of coconut shells which is called grade 1 liquid smoke  is used for mackerel fish preservative. The aim of this research is to evaluate the effect of soaking time to the quality of preserved mackarel fish using organoleptic approaches. Five (5) pair of fresh mackerel fishes were cleaned and placed in a  soaking container. There was also one (1) pair of mackerel used as a control. Approximately  3L of 3% (wt.) solution of liquid smoke from coconut shell pyrolysis was poured into the soaking container  until the fishes were perfectly soaked. The fishes were soaked for 3, 5, 10, 15 and 20 minutes, respectively, and then they were stored at room temperature for observation. The control fish was stored in a container in room temperature without the addition of liquid smoke . Organoleptic observations, namely aroma, color and texture were carried out for soaked and control fishes in the first and 48th  hours of the storage time. From the research, it was found that the optimum soaking time of mackerel fishes was 5 minutes. At this optimum soaking time, the organoleptic properties including aroma, color and texture  of preserved fishes  at the first hour of the storage showed only one level  lower quality than a fresh fish. Furthermore, at 48th hours of the storage time, the preserved fishes showed a better performance of organoleptic characteristics (scale >4 ) compared to the control fish (scale @2).
Corrosion Rate Analysis of JIS G-3141 Steel for Automotive Inner Wheel House Production with Weight Loss Method Arwati, I Gusti Ayu; Ifani, Febrina
World Chemical Engineering Journal VOLUME 6 NO. 1 JUNE 2022
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v6i1.14377

Abstract

The growth of car sales and production has decreased since 2020, this is due to corrosion of automotive steel plates in the form of low carbon steel stored in warehouses. The purpose of this study was to obtain the value of the corrosion rate and its effect on mechanical properties and changes in the composition of carbon values. Low carbon steel plates commonly used by automotives where the material is low carbon steel JIS G-3141, with its elemental content of C 0.12%, Mn 0.5%, P 0.04% and S 0.045% with tensile mechanical properties. strength 270 N/mm2, elongation 37%. The purpose of this study was to obtain the value of the corrosion rate and its effect on mechanical properties and changes in the composition of carbon values. Low carbon steel plates commonly used by automotives where the material is low carbon steel JIS G-3141, with its elemental content of C 0.12%, Mn 0.5%, P 0.04% and S 0.045% with tensile mechanical properties. strength 270 N/mm2, elongation 37%.
Simulation a Couple of Exothermic and Endothermic Syngas Processes in a Catalytic Plate Reactor Safari, Masoud; Towfighi, Jafar; Torkian, Mohammad
World Chemical Engineering Journal VOLUME 6 NO. 1 JUNE 2022
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v6i1.14577

Abstract

This paper studies an efficient way to produce syngas from the methane couple reforming and partial methane oxidation by utilizing a catalytic plate reactor. Methane steam and dry reforming as endothermic reactions are coupled with partial methane oxidation as an exothermic reaction in a catalytic plate reactor, which is simulated using detailed reaction kinetics, mass, and energy balances. The impact of inlet temperature, composition, and velocities on the reforming and partial oxidation channels, and also the resulting methane conversions, is studied. In addition, the H2/CO ratio is evaluated for both endothermic and exothermic sides across varied feed ratios. Co- and counter-flow arrangements are simulated for catalytic plate reactors, and their impact on temperature distribution and methane conversion is studied. The suitable plate dimensions, in particular, plate length, are computed during this simulation. Applying a metal plate, Co- and counter-flow arrangements are simulated for catalytic plate reactors, and their impact on temperature distribution and methane conversion is studied. During this simulation, the appropriate plate dimensions, particularly plate length, are determined. The use of a metal plate with a greater thermal conductivity allows for effective heat transmission between endothermic and exothermic channels, resulting in outstanding temperature distribution and slight temperature differences. 

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