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Iwan Ridwan
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Jl. Gegerkalong Hilir, Ds. Ciwaruga Kecamatan Parongpong Kabupaten Bandung Barat Kotak Pos Bandung 1234 Kode Pos 40559 Gedung Jurusan Teknik Kimia
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FLUIDA
Published by Politeknik Negeri Bandung
ISSN : 14128543     EISSN : 27237680     DOI : https://doi.org/10.35313/fluida
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Environmental Science Materials Science & Nanotechnology
FLUIDA (FLD, ISSN: 1412-8543, e-ISSN: 2723-7680) is a science and technology journal that contains articles taken from laboratory research results, simulation results of problems, conceptual analysis (the study of problem-solving in writing) about the production process, troubleshooting, and maintenance as well as results of studies/evaluations of the performance of a system process, especially in the fields of Chemical Engineering, Sustainable and Renewable Energy, Bioprocess Technology, and Food Technology.
Arjuna Subject : Teknik Kimia (semua kategori) - Teknik Kimia (Lain-Lain)
Articles 124 Documents
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The Effect of Maltodextrin Concentration and Spray Dryer Drying Temperature on the Characteristics of Coconut Milk Powder Yulistiani, Fitria; Nuraeni, Alifia; Sheilla Aulia Sofiatul Mardiah; Hidayatulloh, Irwan; Elizabeth, Lidya; Nurcahyo
Fluida Vol. 16 No. 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4006

Abstract

Coconut milk has a higher water content than other contents, so microbes can easily damage and spoil it. To obtain a low-moisture powder product, the liquid coconut milk was dried using a Buchi Mini Spray dryer B-290 with inlet temperatures of 150°C, 160°C, and 170°C. The researchers added maltodextrin to coconut milk, which had a ratio of grated coconut to the water of 1:3, in concentrations of 9%, 10%, 11%, 12%, and 13%. The addition of maltodextrin and the use of drying temperature did not significantly affect the pH, solubility, and percentage of product mass but did significantly affect the moisture content. The best operating conditions for producing coconut milk powder were at a maltodextrin concentration of 13% and a temperature of 170°C. Under these conditions, the produced coconut milk powder had a pH value of 6.12, a moisture content of 4.56%, a solubility of 98.74%, a product mass of 24.99 grams and an overall percentage of product mass of 21.32%.
Optimization of Pectin Extraction from Kepok Banana Peel (Musa Acuminata Balbisiana Colla) Using Natural Deep Eutectic Solvent (NADES) Fauzan, Ahmad; Prihandini, Ghusrina; Yudha W N, Angga; Sihaloho, Rivan
Fluida Vol. 16 No. 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4055

Abstract

Kepok banana peel is an abundant waste used as the main ingredient in pectin extraction. The pectin contained in Kepok bananas is known to be at a fairly high level compared to other types of bananas. This study aimed to determine the water content, methoxyl content, equivalent weight, galacturonic acid, and pectin yield in the pectin extraction process using the NADESS solvent extraction method at various NADESs C molar ratios (1:4; 1:7; 1:20). ), and extraction temperature (80oC, 90oC, 100oC). based on the results obtained, the best extract located at a ratio of 1:4 with a temperature of 90oC, with a moisture content of 99.8%, methoxyl content of 2.79%, yield of pectin of 5.81%, an equivalent weight is 5333.33, and the galacturonic acid content is 75.56%. While the test results show that the concentration of the given K: G solution affects the amount of pectin yield obtained in this extraction process.
Pengaruh Penambahan Kitosan dan Selulosa Terhadap Performa Bioplastik Berbahan Baku Pati Singkong Karet Andini Puspita Dewi; Aqqilla Mardhiyana; Rintis Manfaati; Unung Leoanggraini
Fluida Vol 16 No 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4394

Abstract

Manihot Glaziovii has a starch content of 77.87 making it potential to be used as raw material for bioplastics manufacturing as a substitute for conventional plastics. It requires the addition of biopolymers (fillers) and plasticizers to overcome weaknesses against mechanical properties and water resistance. This study aims to determine the effect of filler variations on the quality of bioplastics to be compared with SNI No.7188.7:2016 using fillers addition in the form of chitosan and cellulose from newsprint and sorbitol as plasticizer were expected to improve the quality of the bioplastics. Melt intercalation method are used with heating temperature of 60°C-80°C for 60 minutes and stirring speed of 500 rpm. The variation of cellulose combination for 30% chitosan (w/w starch) was 10%, 12%, 14%, 16%, and 18% while the variation of chitosan for 16% cellulose (w/w starch) was 20%, 30%, 40 %, 50%, and 60%. Based on the test results, the best characteristic value for the water absorption is 120.65%, biodegradability is 32.74%, tensile strength value is 15.72 MPa, WVTR value is 6.52 g/m2.hour, and elongation is 29.76%. From the test results, it can be concluded that bioplastics made from Manihot Glaziovii starch have not been able to meet SNI No.7188:2016.
Determination Of Optimum Drying Condition On Flavonoid Content Of Ficus Carica L. Leaves Using Tray Dryer Emma Hermawati; Yusmardhany Yusuf; Alfiana Adhitasari
Fluida Vol 16 No 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4401

Abstract

This research aims to find out the characteristics of Ficus carica L. drying process using a tray dryer and determine the effect of temperature and drying time on Ficus Carica L. flavonoid content using a tray dryer to obtain Ficus carica L. herbal leaf tea which is high in antioxidants. At the experimental stage, the water content of fresh leaves of Ficus carica L. were determined, so the water content is 74 ± 1.11% (wet base), then dried using a tray dryer at 35; 40; 45; 50; and 55oC, with a variation of the drying air flow rate of 1.3; 1.6; 1.9; 2.2; and 2.4 m/s. The optimum temperature and drying air flow rate are 50oC and 1.9 m/s since the highest flavonoid content was obtained at those condition as much 0.78 ± 0.001 gram QE/100gram extract. Dried products which packaged in tea bags have a content of 23.60% carbohydrate, total fat 3.50%, protein 5.35%,antioxidant 154.25 ppm and calorific value of 1430 Kcal/100 grams. It can be concluded that Ficus carica L. drying process using a tray dryer can be used to produce herbal leaf tea which is high in antioxidants and flavonoid content.
Application of Gold Nanoparticles Synthesized with Malva Nut Gum as Reducing Agent for scFv Conjugates in a Colorimetric Chikungunya Virus Detection Muhamad Zulchoir Rasyid; Ratna Yulistya Ningrum; Sinta Setyaningrum; Budi Santoso; Muhammad Yusuf; Bachti Alisjahbana; Toto Subroto; Bevi Lidya
Fluida Vol 16 No 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4493

Abstract

Gold nanoparticles have good surface plasmon properties in the presence of free electrons on their surface. The presence of free electrons on the surface of the plasmon causes gold nanoparticles to be able to bind to various kinds of biomolecules and proteins, including single-chain variable fragments (scFv). In this study, gold nanoparticle conjugates with Chikungunya antiviral scFv have been successfully prepared with the aim of developing a colorimetric method for rapid detection of envelope protein Chikungunya virus (E2 CHIKV). The manufacture of gold nanoparticles was carried out using malva nut gum and trisodium citrate as reducing agents. The results showed the formation of the AuNP-scFv conjugate which was characterized by a shift in the maximum wavelength for gold nanoparticles synthesized using malva nut gum as a reducing agent from 532.89 nm to 536.62 nm. Similarly, for gold nanoparticles synthesized using trisodium citrate as a reducing agent, the maximum wavelength shifted from 528.99 nm to 531.95 nm. The detection result of E2 CHIKV protein using the AuNP-scFv conjugate has not shown a positive result
Hydrolysis of Waste Cooking Oil Using Rhizopus oryzae to Produce Free Fatty Acids Manfaati, Rintis; Connery Manurung, Prans; Muhamad Nur Rojab; Keryanti, Keryanti
Fluida Vol. 16 No. 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4496

Abstract

Waste cooking oil is waste produced from palm oil after it has been heated and fried at high temperatures, and it can pollute the environment. One effort to reuse waste cooking oil is a fermentation processe that produces free fatty acids with the help of Rhizopus oryzae as a biocatalyst. Variations in initial substrate concentration ranged from 10 g/L to 70 g/L, followed by varied types of nitrogen sources, namely malt extract, beef extract, (NH2)2CO, NH4Cl, and (NH4)2SO4 at a concentration of 70 g/L to determine free fatty acid concentration. Fermentation was carried out for 7 days. The analysis carried out included the concentration of free fatty acids, biomass, and YP/X value. The optimum initial used cooking oil substrate was obtained at a concentration of 30 g/L with a YP/X value of 13.63%, a free fatty acid concentration of 2.13 g/L and a dry cell weight of 15.48 g/L. The best nitrogen source is beef extract with a Yp/x value of 11.78%, a free fatty acid concentration of 2.02 g/L and a dry cell weight of 17.0 g/L
The Dynamic Simulation of The Benzene and Toluene Distillation Process Abdussalam Topandi; Khadijah Sayyidatun Nisa; Ibnu Maulana Hidayatulloh
Fluida Vol 16 No 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4497

Abstract

Benzene and toluene are products of petroleum catalytic fractionation and dehydrogenation, which are massively used for industrial purposes. The mixture of these two compounds forms an azeotropic condition that requires high energy and expensive investment. The separation process simulation is the appropriate way to address this problem. The technique of separating benzene and its derivatives from toluene is crucial if the product is to be reused for the following process. We propose a simulation of the separation of benzene and toluene using Aspen HYSYS with several assumptions (Peng-Robinson Fluid Package and Transfer Function Block) and operating conditions settings (pressure, flow rate, and vapor fraction). The simulation results were analyzed by comparing treatments without and with dynamic system settings (sudden and gradual changes in operational parameters for 30 minutes). The simulation results revealed that the stepwise dynamic system configuration might increase 10% extra moles of benzene. In addition, dynamic system settings also significantly affect the concentration of the bottom product.
Study of HAZOPs in the Screening Unit of the Industrial Gas Wastewater Treatment Plant Amalia Novitrie, Nora; Mey Rohma Dhani; Aulia Nadia Rachmat; Yessica Novrita Devi
Fluida Vol. 16 No. 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4499

Abstract

The filtration is the final stage of industrial gas wastewater treatment for clean water generation. Filtration is an operation of separating solid and liquid materials by filter medium. In filtration process the driving force such as pressure difference by gravitation or rotary power cause the feed to flow. The process parameters in the filtration process need to be monitored and controlled because deviation or abnormality of the process parameters will cause operating failures. This condition requires a more in-depth identification so that the risks of operating failures can be minimized. HAZOPs is a method to identify hazard that caused by deviation of parameters using guide words. Steps of the research consisted of early survey, literature study, and filling the HAZOPs worksheet such as determine study node, deviation, parameter, guideword, risk evaluation, and risk control. The results of the study show that there were four potential deviations from three parameters which were flow, pressure, and temperature. Risk values analysed were medium and low. Recommendation of the system are adding alarm, valve, changing filter regularly, and scheduling the routine maintenance.
The Effect of Adding Mg-Zn/Al Hydrotalcite on the Decarboxylation Product of Hydroxy Pelargonate Soap Ella Melyna; Tirto Prakoso; Tatang Hernas Soerawidjaja
Fluida Vol 16 No 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4502

Abstract

Pelargonic acid is a by-product of the ozonolysis reaction of oleic acid to azelic acid. Pelargonic acid decarboxylation is the process of removing a carboxyl group (-COO-) from pelargonic acid (C9H18O2) to produce n-octane (C8H18) hydrocarbons, which are the main group of hydrocarbons that make up gasoline. The main parameter in gasoline is the octane number. The octane number of n-octane (C8H18) is 15, which is considered low, while good gasoline is desired to have a high octane number. To convert straight-chain alkanes and alkenes into branched alkanes and alkenes, an isomerization process can be carried out on vapor-cracking products using a solid catalyst. Transition metals and their compounds can be used as catalysts. Transition metals are able to change the oxidation state, create complex compounds, absorb other substances on the metal surface, and activate these substances. The transition metals used in this study are Zn and Al. The stages of the research process were the preparation of Mg-Zn/Al hydrotalcite base, the manufacturing of hydroxy pelargonate soap, and the decarboxylation of hydroxy pelargonate soap. The results of this study found that the highest product gain, namely 64.76%, occurred when Mg-Zn/Al = 5:5:2 hydrotalcite was in 300% excess. The highest product selectivity to 2.16% n-octane occurred in the use of a 300% excess of Mg-Zn/Al = 3:3:2 hydrotalcite. A low Al/Mg/Zn ratio of 2:10 can increase product yield; a high Al/Mg/Zn ratio of 2:6 can increase product selectivity and lower the freezing point.
Seeding and Acclimatization for Aerobic Processing of Restaurant Wastewater with Sequencing Batch Reactor Herawati Budiastuti; Laily Isna Ramadhani; Sudrajat Harris Abdulloh; Ananda Dea Maharani; Melina Melina; Robby Sudarman
Fluida Vol 16 No 1 (2023): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v16i1.4521

Abstract

Restaurant wastewater has a relatively high organic matter content, so it needs to be treated to meet the specified quality standard. One of the technologies that can be used in restaurant wastewater treatment is Sequencing Batch Reactor (SBR) technology. The purpose of this study is to set up an aerobic SBR system with seeding and acclimatization treatments to reduce the amount of organic matter in restaurant wastewater when a shock load occurs. The research was done using wastewater from a restaurant in Bandung and activated sludge from the food industry in Bogor as seeds for microorganisms. In this study, the seeding process was carried out by introducing 25% activated sludge and 75% nutrients into the reactor, and the acclimatization process was carried out by introducing a specific ratio of nutrients and wastewater into the reactor gradually until the waste concentration reached 100%. The parameters tested were COD, MLVSS, DO, pH, and temperature. During the seeding procedure, the initial COD value of 3,200 mg/L declined. It began to stabilize on the seventh day, with a COD value of 1,080 mg/L. The COD removal reached a relatively stable condition in the acclimatization process starting on day 2, where COD decreased from the original 1,280 mg/L to 480 mg/L.

Page 9 of 13 | Total Record : 124

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