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Iqbal Syaichurrozi
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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
 1   2   3   4   5 
Triple Batch Digesters in Series Method to Analyze Biogas Potential from Bioethanol Vinasse Syaichurrozi, Iqbal; Budiyono, Budiyono; Sumardiono, Siswo
World Chemical Engineering Journal VOLUME 1 NO. 1 JUNE 2015
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i1.198

Abstract

The purpose of this study was to investigate biogas production from bioethanol vinasse using the simple method which was triple batch digester in series mode. Three digesters (A, B, C) were used in laboratory scale and carried out in 30 days respectively. The fresh rumen was added in substrates before that were put into each digester (A, B, C). Ratio of COD/N in substrat was adjusted in variation of 1436/7, 400/7, 500/7, 600/7, 700/7. The results showed that in digester A, biogas was produced in large amount a first time of fermentation. In digester B, biogas generated was less than that in digester A. Meanwhile, in digester C, biogas was not produced again. Ratio of 500/7 and 600/7 generated the most biogas volume which was 9,322 and 9,168 mL. Keywords: Bioethanol, Biogas, Series Method, Triple Batch, Vinasse,
The Influence of Kerosene to Increase the Quality of Coal from Bayah South Banten Using UBC Methode Heriyanto, Heri; Ernayati, Widya; Yulvianti, Meri; Sutijan, Sutijan
World Chemical Engineering Journal VOLUME 1 NO. 1 JUNE 2015
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i1.262

Abstract

The increasing price and the decreasing stock of fossil fuel nowadays are two factorsthat make the use of alternative fuel with lower price become necessity. The source ofenergy that can be used to fill the gap between convensional fossil fuel towards cleanerand renewable energy is Coal. South Banten has a massive stock of coal, around 70% ofall the mineral sources in South Banten, but the quality of the coal is low, due to thesulfur content around 2.28 % dry basis and a high water content that lead to the lowestcalor content. The aim of this research is to lowering the sulfur and water content ofthe coal. Upgrading Brown Coal methode is the methode used to reach the aim stated.The research was settle at temperature 150: C, pressure 350 kPa, and addition ofkerosene as the solvent. The result of the research shows the increasing of calorcontent and the decreasing sulfur content when the evaporation temperature graduallyincreased.
Design of Laboratory Scale Oil Distillation Machine Satria, Dhimas; Rosyadi, Imron; Irman, Ade; Lusiani, Rina; Haryadi, Haryadi; Siregar, Abdul Rahman
World Chemical Engineering Journal VOLUME 1 NO. 3 DECEMBER 2016
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i3.945

Abstract

In Indonesia there are 4,000 old oil wells are not exploited again by Pertamina becauseit is not economical, some old wells exploited and processed in the traditional way.Their traditional oil processing has not significantly give a role to the income of localcommunities, as the mining process that is not managed by modern technologyresulting in a weak bargaining position. This study aims to participate in the welfare ofthe community in areas rich in oil resources and also support the energy security bydeveloping technologies distillationof crude oil into diesel by exploiting oil wellsparents who are not exploited again by Pertamina that will improve the bargainingposition (bargaining power), increase revenue, reduce unemployment and poverty andhas created a system of social safety nets and insurance against society.The methodused is the method of Pahl and Beitz, which consists of the Planning and TaskClarification, Conceptual Design, Embodiment Design, and Detail Design.The results ofthe research are the best variant for the design of machines fractional distillation ofpetroleum laboratory scale variant 1 (Boiler cylinder - 0.5 inch Pipe - Tubes distillationcylinder - gas stove), by reason of the appropriate size pipe diameter and more securethan the variance other variants. While the dimensions obtained from the draft is 1.31m 2 for a total dimension of the tower area (AT) and 408 mm for diameter Total Tower(DT), and 3 mm for the reactor tube wall thickness. In addition, the test results of oilthat has been processed using distillation machine laboratory scale show still makesdiesel specifications in accordance with standards established by the Government,namely the specifications for specific gravity, viscosity, water content, maximumheating and visual appearance.
Study and Development of Linier Low Density Polyethylene (LLDPE) and Poly Lactid Acid (PLA) Biodegradable Compouns Using Compatibizer LLDPE-g-MA Ghozali, Muhammad; Sinaga, Pius Doni B.; Maranata, Shela; Rohmah, Elfi Nur
World Chemical Engineering Journal VOLUME 1 NO. 2 JUNE 2016
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i2.802

Abstract

This study discusses composite polymer of LLDPE and PLA at a ratio of 100: 0, 80:20, 60:40, 40:60, 20:80, 0: 100 with 4 phr LLDPE-g-MA compatibilizer. The process of making composite was performed using rheomix, which was then molded into thin sheets using hydraulic hot press to test its mechanical properties, i.e. SEM, TGA and biodegradable. The test results of mechanical properties (tensile strength and elongation at break) showed that the less the composition of PLA in the composite, the higher the mechanical properties. SEM composite test results have indicated that the LLDPE/PLA composite has a smooth surface, indicating good compatibility between LLDPE and PLA. The TGA testing produced thermal degradation in the composite sample as the PLA compositions decreased. The biodegradable test results showed that the more the PLA composition increased, the higher the missing mass of the compositesamples. Based on the test results, composite LLDPE/PLA can be used as a polybag plastic because it has strong mechanical properties and environmentally friendly due to the fact that it can be degraded by microorganisms.
An Initial Study Of The Air Pollution Through Rainwater In An Industrial Area Of Bekasi Izzati, Titia
World Chemical Engineering Journal VOLUME 1 NO. 2 JUNE 2016
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i2.810

Abstract

This study aims to determine the level of acidity in the rainwater in the industrial area of East Jakarta. The research was done by using a multimeter (Waterproof Tester). With these tools, it can be seen pH and temperature in the rainwater. The results shown that the rainwater in the area of Bekasi tends to be normal because it is still in the average and standard. Although these areas are industrial areas, airports, and many transportation passes, the industrial area still have green places.
The Time Effect Of Extraction With Natural Dyes Morin Jackfruit Wood Powder By Using Some Variation of Solvent Arwati, I Gusti Ayu; Wedhasari, Tyas
World Chemical Engineering Journal VOLUME 1 NO. 2 JUNE 2016
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i2.811

Abstract

The aim of this study is to obtain a dye source which is can be degraded easily. Themajority of natural dyes extracted from plants is easily degraded dye. Plants that can be used as a coloring agent such as jackfruit wood (Artocorpusheterophyllus) taken from the morin containing a yellow dye. This study aims to find the best extraction time of morin from jackfruit sawdust using some solvent (Ethanol, Hexane and Acetone). The research was carried out in chemical laboratories in PT Sanova. From the research that has been done, found the best extraction time for 2hours with a yield of 8.36% morin.
GRATIS (Gravity-Fed Biofiltering System) : Application of The Water Treatment Technology for Cibaten River in Indonesia Yudanto, Dea Yusuf; Napitasari, Mita; Suhirman, Suhirman; Syaichurrozi, Iqbal
World Chemical Engineering Journal VOLUME 1 NO. 3 DECEMBER 2016
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i3.944

Abstract

River is one of the resources for water because it is popular for human necessary,especially used in washing, bathing and cooking activity. At this era, the pollution isdesecrated by industrial and domestic waste. Hence, the quality of water on rivers hasdecreased. Cibanten river located in Banten Province-Indonesia country is one of theriver, whose water quality is decreased by pollution. The characteristics of Cibanten riveris Total Dissolved Solid (TDS) of 416 ppm, Total Suspended Solid (TSS) of 100 - 900 ppm,pH level of 6-8. Therefore, watertreatment must be done before the water is used.Biofiltering technology with gravity system was chosen, It utilized the combination ofcoconut fibrous and zeolite active (activation without chemical). This Equipment calledGRATIS (Gravity-fed Biofiltering System). Result from this treatment, TDS decreased to249 ppm (sample 2) and 185 ppm (sample 3), pH increased to 7.23 (sample 3) and 8.5(sample 2), TSS decreased to 9-115 ppm with fed water of TSS about 1048 ppm. Turbiditypoint decreased about 99.5 % (sample 2) and 99.7% (sample 3). BOD (biological OxygenDemand) decreased about 83.9% (sample 2) and 87.1% (sample 3) and COD (ChemicalOxygen Demand) decreased about 30.8% (sample 2) and 38.5% (sample 3).
Effect of Polycondensation Temperature to Oligomer yield and Depolimerisation Side Reaction Rahmayetty, Rahmayetty; Sukirno, Sukirno; Gozan, Misri
World Chemical Engineering Journal VOLUME 2 NO. 1 JUNE 2018
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v2i1.3467

Abstract

Ring-opening polymerization reaction is the best method for producing high molecular weight polymers. The stage of manufacture of PLA from lactic acid through the lactide ring opening reaction is carried out through three stages of the process ie polycondensation, depolymerization and polymerization. The polycondensation stage of lactic acid is the stage of oligomer formation. At the polycondensation stage, the oligomeric molecular weight is determined by the temperature, pressure, type and concentration of the catalyst used. The purpose of this research was to obtain the effect of polycondensation temperature without catalyst on oligomer recovery and side reactions of depolymerization. Polycondensation is done by pretreatment of lactic acid at 120oC for 1 hour. After that, the heating lactic acid at varying temperatures..OLLA yield at polycondensation temperature 150; 180; 200oC for 4 h and gradually (at 150 oC for 2 h and 180oC for 2 h) were 96.33; 85.36; 82.13 and 88.37% respectively. The higher  polycondensation temperature, the intramolecular interactions of the molecule as a side reaction was increasing.
Aluminum Corrosion Analysis for Environmental Acid Chloride Solution Arwati, I Gusti Ayu; Fina, Fina
World Chemical Engineering Journal VOLUME 1 NO. 5 DECEMBER 2017
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i5.2547

Abstract

Aluminum is the most commonly used metal. Aluminum is present on the bipolar plate which is a key part in PEMFC (Proton Exchange Membrane Fuel Cell). In the air, aluminum is easily oxidized, forming a thin layer (Al2O3). Therefore it's necessary to do an experiment to find out the extent of corrosion on aluminum. In this experiment, corrosion rate analysis on aluminum is arrived at by using hydrochloric acid (HCl) using weight loss and electrochemical methods. And corrosion rate results of aluminum metal with a concentration of 0.1M ; 0.2M; 0.3M; 0.4M and 0.5M with a concentration of 0.5M with a value 0.04250 grams and the smallest corrosion rate of 0.00030 gram with concentration of 0,1M. The largest value of corrosion rate at 0.58610 (mpy) and 0.91589 Ampere using electrochemical method. Morphology on aluminum is seen using SEM (Scanning Electron Microscope is pitting corrosion).
An Initial Study of the Water Pollution Analysis at Residential, Office Building and Industrial Area’s in Bogor Izzati, Titia
World Chemical Engineering Journal VOLUME 1 NO. 4 JUNE 2017
Publisher : Chemical Engineering Department, Engineering Faculty, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/wcej.v1i4.1942

Abstract

The purpose of this study is to find out the level of acidity (pH) and electrical conductivity (EC) in the ground water in Residential, Office Building and Industrial Area in Bogor. This study used pH meter to determine the level of acidity and EC meter to find out the electrical conductivity. The method in this research was to collect ground water samples randomly in several places in Bogor area. The result of this research showed that the ground water in Bogor area was categorized as normal, because the pH was in range of 7.23 to 7.51

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