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Reaktor

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Published by Universitas Diponegoro

ISSN : 08520798 EISSN : 24075973 DOI : https://doi.org/10.14710/reaktor.xx.x.xx-xx

Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Materials Science & Nanotechnology

Reaktor invites contributions of original and novel fundamental research. Reaktor publishes scientific study/ research papers, industrial problem solving related to Chemical Engineering field as well as review papers. The journal presents paper dealing with the topic related to Chemical Engineering including: Transport Phenomena and Chemical Engineering Operating Unit Chemical Reaction Technique, Chemical Kinetics, and Catalysis Designing, Modeling, and Process Optimization Energy and Conversion Technology Thermodynamics Process System Engineering and products Particulate and emulsion technologies Membrane Technology Material Development Food Technology and Bioprocess Waste Treatment Technology

Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)

Articles 7 Documents

Search results for , issue "Volume 20 No.3 September 2020" : 7 Documents clear

Application of Glyoxal Acrylamide Modified Κ-Carrageenan as A Superabsorbent Polymer in Drug Delivery System Aji Prasetyaningrum; Al Farrel A. Raemas; Nur Rokhati; Bakti Jos
Reaktor Volume 20 No.3 September 2020
Publisher : Dept. of Chemical Engineering, Diponegoro University

The hydrogel is superabsorbent polymers (SAP) that are biodegradable and can be obtained from polysaccharides, lipids, and proteins. Polysaccharides include cellulose, starch and their derivatives, seaweed extracts such as carrageenan, alginate, pectin, and chitosan. Carrageenan is the result of the extraction of red seaweed sap with an alkaline solution. The main objective of this study was to simultaneously increase the strength and properties of κ-carrageenan SAP film with the addition of glyoxal and acrylamide as crosslinkers. The addition of acrylamide (variated from 1 to 7 % b/v) into the k-Carrageenan based SAP hydrogel compound and the presence of glyoxal as crosslink agent (variated from 0 to 1,0 % v/v). The physical properties of the SAP films were analyze using swelling degree and tensile strength. The structural and morphological properties of composite films were analyzed using Fourier Transform Infrared (FTIR) and Scanning Electron Microscopy (SEM). In addition, the effect of pHs on the releasing drug Poly(vinylpyrrolidone)-Iodine was investigated. This research shows that the addition of acrylamide and glyoxal can improve the physical properties of the modified κ-carrageenan film. Characterization using SEM shows that the addition of glyoxal causes the formation of tissue fibers in SAP. FTIR spectra indicated the formation of cross bonds in modified SAP film at 3294.42 cm-1 (carboxylic acid). The treatment under alkaline conditions will increase drug release ability.Keywords: κ-carrageenan; hydrogels; acrylamide; glyoxal; drug delivery

Solely Cellulose-based Adsorbent Derived from Oil Palm Empty Fruit Bunches for Dye Removal Athanasia Amanda Septevani; Farhan Riza Afandi; Yulianti Sampora; Melati Septiyanti; Yenni Apriliany Devy; Aisah Resti Amelia; Dian Burhani
Reaktor Volume 20 No.3 September 2020
Publisher : Dept. of Chemical Engineering, Diponegoro University

The purpose of this research is to determine the adsorption capability of micro and nano-cellulose derived from oil palm empty fruit bunch (EFB) as dye removal. Cellulose based adsorbents were successfully obtained from EFB in the form of microcellulose (eMC) via both delignification (D-eMC) and bleaching processes (B-eMC) as well as in nanocellulose (eNC) by using acid hydrolysis method and hence termed as delignified-eNC (D-eNC) and bleached-eNC (B-eNC) respectively. Dye adsorption test was carried out by UV-Spectrophotometer by comparing initial dye MO concentration (as a control solution) to the treated MO solution upon the addition of micro- and nano- cellulose based adsorbent. It was clear that the dye removal efficiency of micro-cellulose both D-eMC and B-eMC were lower than the nano-cellulose structures. The higher adsorptive capacity of nano-size cellulose compared to the micro-size cellulose was confirmed by the distinct presence of FTIR shifting peak of hydroxyl and sulfonyl groups. It was expected as the micro-size of cellulose would not be able to provide a good adsorptive capability of hydroxyl surface active agent to adsorb the dye. In the case of eNC, the result showed that D-eNC afforded a better dye adsorption than B-eNC. At the same concentration of eNC at 3 wt. %, D-eNC could adsorb at about 19.3% of MO while only 2.4% of MO could be removed by B-eNC. Finally, all of adsorbent could maintain pH and TDS within water quality specification.

Erratum to: Evaluation Performance of Pneumatic Dryer for Cassava Starch [18 (4): 216-223] Editorial, Reaktor
Reaktor Volume 20 No.3 September 2020
Publisher : Dept. of Chemical Engineering, Diponegoro University

Correction to: Reaktor (2018), 18 (4): 216-223 (doi: https://doi.org/10.14710/reaktor.18.04.216-223) An error appeared in the article entitled “Evaluation Performance of Pneumatic Dryer for Cassava Starch” published in Reaktor. In the published article the acknowledgement was:The authors would like to thank Widiantara, Maria Agustin Taolin and Dea Endah, Y. for supporting in preparation of materials this research. The acknowledgement of the article is corrected to be: none The original article can be access online at: https://doi.org/10.14710/reaktor.18.04.216-223 How to Cite This Article: Suherman and Hidayati, N. (2018), Evaluation Performance of Pneumatic Dryer for Cassava Starch, Reaktor, 18(4), 216-223,http://doi.org/10.14710/reaktor.18.04.216-223. Permalink/DOI: http://doi.org/10.14710/reaktor.20.03.159-159

Comparative Analysis Between PI Conventional and Cascade Control in Heater-PFR-Series Dedy Kristanto; Yulius Deddy Hermawan
Reaktor Volume 20 No.3 September 2020
Publisher : Dept. of Chemical Engineering, Diponegoro University

The goals of this work are to compare and analyze the use of PI conventional and Cascade control configuration in heater-plug-flow-reactor-series (Heater-PFR-series) to produce benzene through the reaction of hydrodealkylation of toluene (HDA).The two control configurations were rigorously examined in UniSim dynamic simulation environment. The PI control parameters were tuned by using “autotuner” mode of UniSim. As shown in dynamic simulation study, the two control configurations with its tuning parameters gave the fast and stable responses. This study revealed that the Cascade control acted very well and its responses were better and faster than those in PI-conventional.Keywords: cascade control; dynamic simulation; PFR; PI conventional; UniSim

Kinetic Study of Kapok Seed Oil Esterification using BMIM-PF6 Catalyst Bagus Agang Sudrajat; Widayat Widayat; Ngurah Widiantara; Hantoro Satriadi; Maria Siahaan; Wira Pinem
Reaktor Volume 20 No.3 September 2020
Publisher : Dept. of Chemical Engineering, Diponegoro University

Biodiesel offers better combustion efficiency, lower sulfur content and aromatic compounds, higher cetane numbers than diesel fuel, biodegradable and renewable properties that are not possessed by conventional fuels such as diesel fuel. This study aims to study the modeling of esterification process of Kapok seed oil using 3 % liquid ionic catalyst 1-Butyl-3-MethydidazoliumHexafluorophosphate (BMIM-PF6). The validation results of reaction kinetic models for experiments and simulations provide an adjacent correlation value, that is R2 = 0.99526, with the rate constant value (k) based on experimental data are 0.003815 L/mol.s and 0.0038 L/mol.s for the simulation data. Based on the simulation results, the proper reaction order for this esterification reaction is the first order reaction equation with a value of R2 = 0.99526, while the second order reaction gives the value R2 = 0.89453. The reaction kinetics parameters obtained from the experimental results are A = 0.012 L/mol.s and -Ea = -0.437 kJ/mol, while the reaction parameters of the simulation are A = 1.0384 L/mol.s and -Ea = -89.5 kJ/mol.Keywords: Esterification, Ionic Liquid Catalyst, Kinetic

Effect of Acid Concentration on the Activation of Bayah Natural Zeolite for Palm Kernel Shell Pyrolysis Application Endang Suhendi; Andre Wibowo; Tia Lestari; Teguh Kurniawan
Reaktor Volume 20 No.3 September 2020
Publisher : Dept. of Chemical Engineering, Diponegoro University

Biooil is the main product in the pyrolysis process which is expected to be a liquid fuel replacement solution. But the resulting biooil cannot be directly used as a result of high oxygenated compounds, high viscosity, corrosive, and unstable. Addition of activated natural zeolite catalyst to the pyrolysis process is expected to improve the quality of biooil in order to be used as a renewable liquid fuel. The research aims to determine the influence of acid concentrations on zeolite modification to the characteristics of pyrolysis products. Result of catalyst characterization indicates that zeolite activation using acid will increase Si/Al ratio as well as open the surface of previously hindered zeolite. The yield of char produced in this study tends not to undergo significant changes between the catalytic and noncatalytic pyrolysis by 33% wt. Addition of zeolite catalyst in pyrolysis proved to be able to increase the content of phenol and decrease the content of acetic acid in bio-oil by 6% . Meanwhile, yield of CO2 increases by 20% in the use of catalysts due to the release of oxygen in the oxygenate compounds. The results of this study showed that the resulting biooil still does not meet the specifications of liquid fuels but can be utilized as a renewable chemical feedstock.Keywords: pyrolysis; biomass; natural zeolite;modified

Mathematical Modeling for Determination of Correlation Between Current Density and Dissolved Oxygen in Yeast Microbial Fuel Cell-Based Biosensor Marcelinus Christwardana; Linda Aliffia Yoshi
Reaktor Volume 20 No.3 September 2020
Publisher : Dept. of Chemical Engineering, Diponegoro University

Experiments were conducted to study the correlation between current density and dissolved oxygen (DO) and to develop a model for estimating the value of current density in yeast MFC based DO biosensors. A curve between current density and DO was made, and data analysis was performed using free-online data fitting, namely zunzun.com. One linear regression and nine different exponential models are used as an approach to determine the correlation between current density and DO. The higher DO, the current density will increase rapidly. The most suitable model was chosen to describe the correlation between the current density and the DO. The coefficient of determination (R2), the sum of square absolute (SSQABS), and root mean square error (RMSE) are used to determine goodness or quality of fit. The exponential model shows a better fit to illustrate the correlation between current density and DO, with R2, SSQABS, and RMSE values were 0.9975, 0.4745 and 0.3444, respectively.

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Dessy Ariyanti

Contact Email dessy.ariyanti@che.undip.ac.id

Phone +62247460058

Journal Mail Official j.reaktor@che.undip.ac.id

Editorial Address Department of Chemical Engineering, Diponegoro University Jl. Prof. Soedarto SH Tembalang Semarang 50275

Location Kota semarang, Jawa tengah INDONESIA

Abstract

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Abstract

Contact Name
Dessy Ariyanti

Contact Email
dessy.ariyanti@che.undip.ac.id

Phone
+62247460058

Journal Mail Official
j.reaktor@che.undip.ac.id

Editorial Address
Department of Chemical Engineering, Diponegoro University Jl. Prof. Soedarto SH Tembalang Semarang 50275

Location
Kota semarang,

Jawa tengah

INDONESIA