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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 85 Documents
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Tailoring Polymeric Nanoparticles as Nanocarriers via RAFT Polymerization Agustina, Sri
World Chemical Engineering Journal VOLUME 5 NO. 1 JUNE 2021
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v5i1.11875

Abstract

Polymeric nanoparticles are really promising to be used as drug carriers, due to its ability to increase the aqueous solubility of drugs. Polymeric nanoparticles can regulate the drug activity by passive or active targeting to different tissues. RAFT polymerization has become the most approvable technique to synthesize polymeric nanocarriers for drug delivery. By using different RAFT agents, wide ranges of polymeric nanoparticles with various architecture and water solubility can be obtained under mild conditions.
Effect of Temperature on Damar Resin-Based Bio-Coating on Mild Steel in Corrosive Media (Acid Effect) by Using Silica from Rice Husk Extract Luqmanulhakim, M. Naufal; Sulaiman, Fatah; Pramudita, Marta
World Chemical Engineering Journal VOLUME 7 NO.1 JUNE 2023
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/wcej.v7i1.20628

Abstract

Bio-coating is a natural anti-corrosion coating material that can be easily degraded and renewed. Rice husk extract and damar resin are alternative natural materials believed to have a relatively high silica content, so they can be used as a substitute for synthetic chemicals in protecting metals from corrosion. This research aims to determine the heat resistance ability of bio-coating on mild steel in a 1 M H2SO4 acid corrosive medium. The experimental object used rice husk waste and damar resin as raw materials. The analytical method used is the weight loss method. Damar resin and silica sol, obtained from rice husks' ashing, are mixed to form a homogeneous product. Metal samples coated with bio-coating material were immersed in 1 M sulfuric acid solution, with silica concentrations of 1500 ppm, variation times 1, 3, and 5 hours, and at temperatures of 30, 40, 60, and 80 °C. At 80 °C, the corrosion rate is very high, which proves that the temperature significantly affects the corrosion rate of mild steel immersed in an acid solution. The results showed that the best conditions were four hours of immersion time temperature of 40°C, with an inhibition efficiency of 98%
Syngas Production by the Gasification of Bayah’s Coal over Ca(OH)2 and Na2CO3 catalyst Heriyanto, Heri; Nahudin, Ahmad; Amyranti, Mutia; Firdaus, Mochamad Adha; Suhendi, Endang; Kosimaningrum, Widya Ernayati
World Chemical Engineering Journal VOLUME 4 NO. 1 JUNE 2020
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v4i1.10589

Abstract

Official data of Indonesia’s coal reserve provided by government in 2014 approximately reached 104.8 billion tonnes. Bayah as a part of South Banten region has been stored quite amount of coal. Gasification is one solution to utilize Bayah’s coal potential. Coal Gasification is a conversion process of solid phase coal into synthetic gas mixture (CO, H2). Main reaction of the process involves Boundouard and Water-Gas-Shift reaction. The aim of experiment was to observes influence of several variables such as : Air Fuel Ratio (AFR), Temperature, and Catalyst at particular condition. Gasification process becomes beneficial when ratio of synthetic gas mixture (H2/CO) exhibits 2.0. Synthetic gas mixtures were analyzed by using gas chromatograph method. 300 grams of Bayah’s coal (14 – 18 mesh) were gasified in updraft type of fixed bed reactor using steam injection under Air Fuel Ratio varied between 1.5, 2.0, 2.5, temperature of 600°C, 700°C, 800°C and catalyst of Ca(OH)2 and Na2CO3 . Air Fuel Ratio of 1.5 and 800 with the help Ca(OH)2 catalyst tended to produce the optimum result for H2/CO ratio which obtained a value of 1.98. Synthetic gas composition  at this variation reached 33.8% for Hydrogen and 17.1% for Carbon Monoxide.
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).
Alteration of The Properties of Spent Eucalyptus Biomass from Steam Distillation Yani, Syamsuddin; Yani, Setyawati
World Chemical Engineering Journal VOLUME 5 NO. 2 DECEMBER 2021
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v5i2.12615

Abstract

Steam distillation is a common method to extract the eucalyptus oil from eucalyptus biomass. The spent biomass of the steam distillation process could be used as biofuel feedstock. This study aims to investigate the effect of eucalyptus biomass steam distillation time on the alteration of the spent biomass.  The properties studied include carbon retention, fuel properties namely proximate and ultimate analyses as well as grindability. Those properties were investigated from 5 to 180 minutes of the distillation time. The grindability and fuels chemistry of spent biomass were little affected by the steam distillation process. The results show that to use the spent biomass of steam distillation as a feedstock for bioenergy production it is quite promising.
Rice Husk Extract and Damar Resin as Corrosion Preventing Bio Coating Materials for Mild Steel in Demineralized Water Hidayatullah, Andra; Irawan, Anton; Pramudita, Marta
World Chemical Engineering Journal VOLUME 7 NO. 2 DECEMBER 2023
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/wcej.v7i2.22832

Abstract

Corrosion is one of the main problems in industry, especially in cooling systems, refinery units, pipelines, chemicals, oil and gas production units, boilers and water processing, paints, pigments, lubricants, and others. The research focused on testing the ability of bio-coating materials of rice husk extract and resin gum using the weight loss method. In contrast, the corrosive medium used was demineralized water. The variations used were soaking time (1, 2 and 3 hours), silica concentration in bio-coating (0, 500, 1000 and 1500 ppm) and temperature (40, 60 and 80oC). From the results of this study, the highest efficiency was 87.39% at a soaking time of 1 hour and a concentration of 1500 ppm. The higher the temperature, the inhibition efficiency decreases; this shows the adsorption mechanism is physisorption.
Emerging Trends in the Development of Chitosan Films for Active Food Packaging Barleany, Dhena Ria; Sari, Denni Kartika; Lestari, Retno Sulistyo Dhamar
World Chemical Engineering Journal VOLUME 4 NO. 2 DECEMBER 2020
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v4i2.10594

Abstract

The demand for healthy and safe foods with the minimum use of synthetic materials is increasing very rapidly. Plastic polymers have negative effects on the environment, and great efforts have been made to evaluate the use of various bio-based polymers as alternatives to synthetic plastic packaging. Chitin and chitosan are mostly extracted from crustacean shells or byproducts from processing and handling fish and seafood. As a result, chitosan as a material for food packaging has received much attention and is widely researched because it has unique biological and functional properties. Chitosan for food packaging and food preservation applications can be applied via the method of spraying, immersing, coating, or wrapping films. However, chitosan has several disadvantages including low mechanical properties and high sensitivity to moisture, which are the main limitations for its industrial applications, including food packaging. In this study, the scientific literature of the last 5 years on chitosan-based films for their potential application in the food packaging industry has been extensively reviewed. This review also discussed various strategies that have been implemented to improve the properties of chitosan film, including using plasticizers and cross-linking agents, filling them with nanoparticles, fibers and whiskers and combining them with natural extracts and essential oils as well as with other natural and synthetic ingredients.
Synthesis of Alkyd Resin Through Alcoholysis – Polyesterification Process from Used Cooking Oil Pretreatment Using Alkaline Activated Natural Bayah Zeolite Suhendi, Endang; Heriyanto, Heri; Fitri Asyuni, Nadya; Kiki Shahila, Ilham
World Chemical Engineering Journal VOLUME 6 NO. 2 DECEMBER 2022
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/wcej.v6i2.17882

Abstract

Waste cooking oil can be treated by an adsorption process using Bayah natural zeolite as raw material for alkyd resin synthesis. This study aimed to determine the optimum conditions for the equivalent ratio of OH:COOH and the temperature of the alkyd resin synthesis. The research was carried out by preparing used cooking oil and Bayah natural zeolite (BNZ), adsorption process, and alkyd resin synthesis through the alcoholysis-polyesterification process. The optimum addition of Bayah natural zeolite-activated NaOH 0.75 N in pretreatment waste cooking oil is 30% weight in terms of color, density, viscosity, and functional group characteristics of the resulting alkyd resin. The characteristics of the alkyd resin product at optimum conditions obtained light brown color with an OH: COOH equivalent ratio of 1.4, and the alcoholysis and esterification temperature at 190 oC with a density value is 1.112 g/cm3, FFA value is 0.1528%, viscosity value is 4808 cP. The ester functional group at wavelengths 1267 cm-1 and 1722 cm-1, the 1H NMR spectrum of the ester group at the peak of 3.5 ppm, and a functional group of 7.6 ppm.
THE UPPERMOST CORROSIVE COMPOSITES IN PETROLEUM OILS AND METALLIC CORROSION Aluvihara, Suresh; Premachandra, Jagath K.
World Chemical Engineering Journal VOLUME 3 NO. 1 JUNE 2019
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v3i1.5126

Abstract

Petroleum oils are the essential compounds in the purposes of industrial mechanisms and a few of other applications since obtaining some adverse impacts from such crude oils on the commonly applicable materials because of the corrosive composites of such crude oils. The investigations of the corrosion rates of seven different types of ferrous metal that applicable in the industry of crude oils refining due to the effects of salts, organic acids, elemental sulfur and Mercaptans of two different types of crude oils were the objectives of the existing research. The chemical compositions of selected ferrous metals, elemental sulfur contents, salt contents, Mercaptans contents and organic acid contents of two different types of crude oils were tested by in order of XRF detector, XRF analyzer, salt analyzer and titration methods. A bath of prepared seven different types of metal coupons was dipped in both crude oils samples separately and homogeneously. In order of after 15, 30 and 45 days from the immersion the corrosion rates of such metal coupons were determined by the weight loss method with the aid of the qualitative microscopic analysis of the corrosion. According to the results that there were obtained the lower corrosion rates from stainless steels especially with the chemical composition at least 12% of chromium with sufficient amount of nickel because of the self corrosion protection film of such metals, relatively higher impact from salts on the metallic corrosion, formations of FeS, Fe2O3, corrosion cracks and irregular pitting on the metal surfaces. 
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%.

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