cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Iwan Ridwan
Contact Email
iwan.ridwan@polban.ac.id
Phone
-
Journal Mail Official
fluida@polban.ac.id
Editorial Address
Jl. Gegerkalong Hilir, Ds. Ciwaruga Kecamatan Parongpong Kabupaten Bandung Barat Kotak Pos Bandung 1234 Kode Pos 40559 Gedung Jurusan Teknik Kimia
Location
Kota bandung,
Jawa barat
INDONESIA
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 6 Documents
 1 
Search results for , issue "Vol. 17 No. 2 (2024): FLUIDA" : 6 Documents clear
Pyrolysis of Medical Mask Waste into Liquid Fuel Using Activated Natural Zeolite Catalyst Fitria Yulistiani; Agati, Risdo Satriya; Haidar, Aria Henry; Ayu Ratna Permanasari
Fluida Vol. 17 No. 2 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i2.4789

Abstract

Due to the COVID-19 pandemic, there has been a rise in the amount of mask waste, which can be recycled using catalytic pyrolysis. The method targets polypropylene, the primary material used in mask production, and utilizes activated natural zeolite as a catalyst. This process can enhance the selectivity of oil product compounds such as benzene, toluene, ethyl benzene, and xylene. This research aims to investigate the impact of the Catalyst Feed mass ratio (C/F) and time on the distribution and recovery of oil products and to identify the optimal operating conditions for generating oil products comparable to the gasoline fraction. The steps are preparation, activation of zeolite catalysts, pyrolysis, component distribution analysis, and pyrolytic oil physical properties test. The variations in this study are C/F of 0.05, 0.1, and 0.2; and pyrolysis times of 30 and 60 minutes. Increasing the C/F to 0.2 reduced the oil yield to 41.18 %w/w, while increasing the time to 60 minutes reduced the char yield to around 3 %w/w. Pyrolysis at C/F = 0.05 for 30 minutes produced the highest monoaromatic composition of 22.884 %w/w, while pyrolysis at C/F = 0.2 produced the highest monoaromatic contents of 20.274 %w/w. The best operating conditions, namely 60 minutes of pyrolysis with C/F = 0.05, resulted in an oil yield of 47.31 %w/w and an octane number of oil products of 80.645. These conditions produce oil with properties of kerosene fraction with a density of 0.778 g/mL and viscosity of 1.005 cSt.
The Methylene Blue Adsorption by Calcium Alginate-Activated Carbon Composite in Fixed Bed Column Wardana Putra, Adzikri; Hermawan, Heru; Setyaningrum, Sinta; Paramitha, Tifa
Fluida Vol. 17 No. 2 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i2.4926

Abstract

Methylene blue is a material that is often used as a cationic dye in the textile industry. Methylene blue is toxic and difficult to degrade. Adsorption is one method to reduce the methylene blue from wastewater. In this study, methylene blue was adsorbed by calcium alginate/activated carbon composite (CaAlg-AcC) in a fixed bed column. The influence of CaCl2.2H2O concentration, initial concentration of methylene blue, and flow rate in the continuous adsorption process were investigated. Every adsorption process was done in 110 min. The results revealed that the CaAlg-AcC composite synthesized using 1% (w/v) CaCl2.2H2O solution has the highest adsorption percentage, 95.28% in 110 min. The initial methylene blue concentration 50 mg/L gave the highest result of adsorption percentage with the smallest amount of methylene blue adsorbed of 31.77 mg.  The flow rate of methylene blue 4 ml/min reached the highest adsorption percentage with the amount of methylene blue adsorbed of 41.79 mg.
Effectiveness of Silica Sulphate Catalyst Based on Rice Husk Ash in The Oleic Acid Esterification Process Lidya Elizabeth; Ade Rifqi Maulana; Dwi Febriani, Anisa; Saripudin; Eko Andrijanto
Fluida Vol. 17 No. 2 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i2.5279

Abstract

Rice husk contains a lot of silica, so it is widely used as research material. One example is as a raw material for the synthesis of silica sulfate. Silica sulfate was synthesized using the sol-gel method with an impregnation time of 6 hours and 2 hours of calcination with variations in calcination temperature of 400-800oC. The analysis carried out on the silica sulfate catalyst is the analysis of acid concentration and FTIR. The best acid concentration results were 0.86 mmol/gram at 400oC. Characterization with FTIR showed similar peaks between silica and silica sulfate. The -OH and Si-O groups appeared at the peak of the analysis results, indicating that the synthesis of silica from rice husk had been carried out successfully. Modifying silica with sulfuric acid is not obvious through FTIR because the S-OH groups of sulfate ions overlap with the silica atoms in siloxane. The resulting silica sulfate is used as a catalyst in the esterification reaction of oleic acid with methanol. The esterification process was carried out at 60oC and varied with independent variables, namely catalyst loading (5-10%-b), time (2-4 hours), and molar ratio (1:6-1:12). The experimental design was determined using the Response Surface Method (RSM) using Design Expert. From the study results, the best variation obtained was a conversion of 87.03% with a variation of catalyst loading of 7.5%-b, a time of 4 hours, and a molar ratio of 1:12.
Optimasi Ekstraksi Kandungan Antosianin Total Bunga Telang Kering (Clitoria ternatea L.) Dengan Metode Microwave Assisted Extraction (MAE) Riniati, Riniati; Widiastuti, Endang; Ismail, Marisa Nursalsabila; Mochamad, Kevin
Fluida Vol. 17 No. 2 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i2.6049

Abstract

Butterfly pea flower (Clitoria ternatea L.) has been used in Indonesia as a natural dye in food and cosmetics due to its varying colors, which depend on the acidity (pH) of the environment. The vibrant colors are attributed to the presence of anthocyanin compounds. This study optimized the anthocyanin extraction process from dried butterfly pea flowers using the Microwave Assisted Extraction (MAE) method. The variables tested included different concentrations of hydrochloric acid (HCl) at 0.01%, 1%, 2.5%, 3%, 3.5%, and 3.75% in 96% ethanol, as well as extraction times of 3, 6, 9, 12, and 15 minutes. The optimum extraction conditions identified were a HCl concentration of 3.5% in 96% ethanol with an extraction duration of 12 minutes, which yielded an anthocyanin concentration of 116.89 ppm.The FTIR analysis confirmed the similarity in functional groups between butterfly pea flower extracts and blackberry fruit extracts, highlighting the potential of butterfly pea flowers as a reliable anthocyanin source
The Effect of Fermentation Time in Full Wash and Honey Processing on Arabica Coffee Characteristics Lidya, Bevi; Rahma Wildiani, Isnaeni; Zikri Ramadhan, Muhammad; Hariyadi, Tri
Fluida Vol. 17 No. 2 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i2.6124

Abstract

Fermentation is the key to every post-harvest processing method carried out. Fermentation in coffee also serves to determine the characteristics of the resulting coffee. To bring out the characteristics of coffee, modification of the fermentation process is used by adding lactic acid bacteria which aims to reduce the caffeine and pH levels in coffee. Low pH in coffee can protect coffee beans from another microorganism and give fruity flavour in coffee. This research aims to determine the effect of lactic acid fermentation time on processing with the full wash and honey method on the characteristics of arabica coffee beans. Fermentation is done with time variations of 8, 16, 24, 32, 40, and 48 hours. The post-harvest processing carried out is the full wash and honey method. The analysis was carried out to determine the water content (gravimetric method), caffeine content (UV- Vis spectrophotometry), pH (pH metre), and total acid level (titration method). The results showed that the longer the fermentation time, the lower the caffeine content and pH levels in coffee. Processing with the full wash method produces lower caffeine levels, while the honey method produces a lower pH and a higher total acid content. The best experiment was obtained at 40-hour fermentation using the honey method, with water content of 9.07%; caffeine 1.11%; pH 4.00; and total acid content of 27%, based on SNI 2008.
Adsorption of Methylene Blue Using Activated Carbon Bioadsorbent Coffee Grounds and Reed Grass Without Flow Rate Hidayatulloh, Irwan; Kurnia, Dianty Rosirda Dewi; Anggorowati, Heni; Muhari, Emma Hermawati; Kharisma, Luthfiana; Sari, Radianti Novita; Paramitha, Tifa; Sihombing, Rony Pasonang
Fluida Vol. 17 No. 2 (2024): FLUIDA
Publisher : Department of Chemical Engineering, Politeknik Negeri Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35313/fluida.v17i2.6269

Abstract

Methylene blue adsorption research has been conducted using bioadsorbents from activated carbon of coffee grounds and reeds. Coffee grounds and reeds contain carbon and cellulose that are effective for binding dyes. This study aims to determine the characteristics of activated carbon from coffee grounds and reeds based on SNI-06-3730-1995 and assess the color reduction of wastewater referring to the Decree of the Minister of Environment No. 51/MENLH/1995, which sets the maximum methylene blue content in industrial wastewater at 5-10 mg/L. The research method includes bioadsorbent preparation, characterization, and adsorption process with UV-Vis spectrophotometric analysis. Mass ratio variation was conducted on each adsorbent at each contact time variation and methylene blue concentration variation. The results of the analysis showed that the activated carbon of coffee grounds and reeds fulfills SNI-06-3730-1995 which is characterized by values that are below the maximum value in each parameter. The effectiveness of methylene blue adsorption by coffee grounds and reeds activated carbon reached 98.15% at a ratio of coffee grounds and reeds activated carbon 0:1 (w/w) for 120 minutes at a concentration of 25 mg/L. The adsorption capacity using the Freundlich isotherm method on reed activated carbon was 1.100 mg/g and coffee grounds activated carbon was 1.019 mg/g. The adsorption process of coffee grounds and reeds activated carbon has no effect on the carbon and cellulose structure of coffee grounds and reeds contained in activated carbon, namely O-H, C-H, C=C, and C=O.

Page 1 of 1 | Total Record : 6

 1 

Filter by Year

2024 2024


Reset
Filter By Issues
All Issue Vol. 18 No. 1 (2025): FLUIDA Vol. 17 No. 2 (2024): FLUIDA Vol. 17 No. 1 (2024): FLUIDA Vol. 16 No. 2 (2023): FLUIDA Vol 16 No 1 (2023): FLUIDA Vol. 16 No. 1 (2023): FLUIDA Vol. 16 No. sp1 (2023): FLUIDA x IRWNS Special Edition Vol 15 No 2 (2022): FLUIDA Vol 15 No 1 (2022): FLUIDA Vol 14 No 2 (2021): FLUIDA Vol 14 No 1 (2021): FLUIDA Vol 13 No 2 (2020): FLUIDA Vol 13 No 1 (2020): FLUIDA Vol 12 No 2 (2019): FLUIDA Vol 12 No 1 (2019): FLUIDA Vol 11 No 2 (2015): FLUIDA Vol 11 No 1 (2015): FLUIDA More Issue