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Journal of Bioprocess Chemical and Environmental Engineering Science
Published by Universitas Riau
ISSN : 27221334     EISSN : 27211894     DOI : -
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Journal of Chemical, Bioprocess and Environmental Engineering Science merupakan Open Access Journal yang menerbitkan naskah dengan topik-topik sebagai berikut: 1) Bioprocess Engineering, 2) Catalytic Reaction Engineering Science, 3) Fundamental of Chemical Engineering and Applied Industry, 4) Industrial Chemical Engineering, 5) Material and Engineering Sciences, 6) Process and Control Engineering, 7) Energy Sciences and Technology, 8) Polymer, Oleo and Petrochemical Technology, 9) Membrane Sciences and Technology, 10) Separation and Purification Technology, 11) Water/Waste Water treatment, 12) Environmental and Safety Technology, 13) Food Processing and Engineering Sciences
Arjuna Subject : Teknik Kimia (semua kategori) - Fluid Flow and Transfer Processes
Articles 52 Documents
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Review: Komposit rGO-TiO2 dalam Proses Fotokatalisis untuk Menghilangkan Kontaminan Warna pada Air Fitri, Lara Ismano; Heltina, Desi; Amri, Amun
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 5 No 2 (2024): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.5.2.46-59

Abstract

This article explains various synthesis methods for rGO-TiO2 materials and their applications in colored wastewater treatment. The methods discussed include hydrothermal, sol-gel, ultrasonication, wet impregnation, electrospinning, and electrophoresis. Each method has its own advantages: the hydrothermal and sol-gel methods enhance photocatalytic activity through the integration of TiO2 and rGO; ultrasonication and wet impregnation methods are effective in uniquely improving photocatalytic performance; while electrophoresis (EPD) and electrospinning methods excel in forming high-quality coatings and nanofibers that boost photocatalytic activity. The choice of method depends on the specific application and desired material properties. The hydrothermal and sol-gel methods are well-suited for photocatalytic applications, while EPD and electrospinning methods are superior for other applications, such as improving photovoltaic performance.
Efektivitas Adsorpsi Logam Berat (Fe2+) Menggunakan Arang Aktif Batang Bambu (Bambusoideae) Teraktivasi NaOH Al'farisi, Cory Dian; Irianty, Rozanna Sri; Damanik, Gery Andreas; Herman, Syamsu
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 5 No 2 (2024): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.5.2.60-68

Abstract

The environmental pollution that was the center of attention was industrial wasted. Adsorption had been shown to been a more effective method for absorbing heavy metals from wastewater. Adsorption is the absorption of a substance on the surface of another substance. The adsorbent commonly used in adsorption is activated charcoal. Yellow bamboo is a material that could produced charcoal by carbonization. The research aimed to make adsorbents from bamboo, to characterize activated charcoal according to SNI 06-3730-1995. Bamboo stem activated charcoal capacity and calculated the effectiveness of charcoal adsorbents. Bamboo stems actively absorb iron ions (Fe2+). Variations in this process was particle sizes of 40+ 60-, 60+ 80- and 80+ 100- mesh and column diameter sizes of 2, 3 and 4 cm. The analysis results for the characteristics of the activated charcoal complied with SNI provisions, showing a moisture content of 4%, an ash content of 8%, and an iodine adsorption capacity of 1002.45 mg/g.. The best results in this research were the adsorption process at varying particle sizes of 80+ 100- mesh with a column diameter of 2 cm with an adsorption capacity value of 0.896 mg/g and an effectiveness of 90.48%. Variations in column diameter and particle size used affect the adsorption capacity and effectiveness of the adsorption process.
Pengaruh Waktu Reaksi Transesterifikasi Biodiesel dari Minyak Lemak Ayam dengan Menggunakan Katalis MgO Habib, Alltop Amri Ya; Suhendri, Suhendri
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 5 No 2 (2024): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.5.2.69-76

Abstract

Generally, biodiesel is produced from vegetable oils, however, this raw material has certain drawbacks, such as price fluctuations due to its competing use in the food industry, making it less economical. Therefore, this study utilizes chicken fat oil as an alternative raw material for biodiesel production, using MgO as a catalyst. The biodiesel was produced through a transesterification reaction at a temperature of 60°C, with an oil-to-methanol ratio of 25 ml:30 ml, and 0.5 g of catalyst. The study varied the reaction times, which were 60 minutes, 120 minutes, and 180 minutes. The best result was obtained at a reaction time of 180 minutes, yielding 92.19%. The biodiesel produced had a density of 0.962 g/ml, a viscosity of 2.931 cSt, and a water content of 0.0416%.
Analisis Konsentrasi Karbon Monoksida (CO) dan Oksida Sulfur (SOx) di Udara Ruangan Akibat Pembakaran Briket Ampas Sagu Hafidawati, Hafidawati; Yenie, Elvi; Naufal, Hafiz Aulia; Manan, Abdul
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 5 No 2 (2024): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.5.2.77-84

Abstract

Sungai Tohor area, Meranti Islands, Riau, is a producer of sago in Indonesia and has great potential as a producer of sago flour. Sago flour production also produces waste in the form of sago dregs. Sago utilisation in Meranti Regency is still limited, sago stems (tual) are processed in factories (sago refineries) to produce sago flour with a production volume of 450,000 tonnes/year. This sago processing also produces side waste in the form of sago pulp as much as 75-83%. This provides potential in the utilisation of sago pulp as an environmentally friendly alternative energy source. This research aims to develop biopellets from sago pulp as a biomass fuel that can replace fossil fuels. The analysis results show that sago pulp biopellets have a moisture content of 8.22%, ash content of 30.51%, volatile matter of 22.01%, and calorific value of 4,599 cal/gr, which fulfils the SNI 01-6235-2000 standard. The CO and SOx gas emission measurements from the combustion of biopellets were below the threshold set in the Regulation of the Indonesian Minister of Health No. 1077 Year 2011 and SNI 7626-2013. The thermal efficiency of combustion reached 28.15%, indicating that sago pulp biopellets have great potential as an efficient and environmentally friendly biomass fuel, supporting sustainable energy transition in Indonesia.
Biogas dari POME: Pengaruh Lingkungan Terhadap Produksi Energi Terbarukan di Industri Kelapa Sawit Amraini, Said Zul; Aidil, Muhammad; Senda, Semuel Pati; Haref, Yoneco; Herman, Syamsu
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 5 No 2 (2024): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.5.2.85-97

Abstract

Palm oil mill effluent is a type of organic agro-industrial waste from the by-product of the processing of fresh oil palm fruit bunches to produce Crude Palm Oil. The management of POME as biogas is an added value for companies to meet the needs of energy sources in the Palm Oil Mill, both for Crude Palm Oil, Kernel Crushing Plant, and domestic needs as a source of electrical energy. POME is a colloidal suspension containing 95-96% water, 0.6-0.7% oil and 4-5% fat and total solids. Anaerobic degradation of POME is the main stage in the biogas production process at the Sei Pagar Palm Oil Factory. The ambient temperature was measured at 08.00, 13.00, and 18.00 for 11 days of testing. To analyze the effect of ambient temperature on sample temperature, a sample temperature test was carried out using a pH meter for each ambient temperature test. To analyze the impact of ambient temperature on the flow rate of gas produced and methane content in biogas, the sensor flow rate was checked with the valve at the reactor outlet fully open. The ambient temperature of the reactor does not change the sample temperature because the temperature in the reactor is controlled by the feed entering the reactor. The average temperature of the reactor environment is lower than the reactor so that it does not affect the gas flow rate (biogas formation process). The average temperature of the reactor environment is lower than the reactor temperature so that it does not affect the formation of methane.
Evaluasi Performa Heat Exchanger Menggunakan Software Aspen HYSYS di Central Gathering Station "X" Plant Operations "Y" Pertamina Hulu Rokan Helianty, Sri; Luthfi, Alif; Wijaya, Deni
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 6 No 1 (2025): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.6.1.26-39

Abstract

The Rokan Block is one of Indonesia's largest oil producers. It is managed by PT Pertamina Hulu Rokan (PHR) and contributes 25% to Indonesia's total oil production. The Central Gathering Station (CGS) “X” at PT PHR utilizes shell and tube heat exchangers (HEX) to effectively heat produced fluids, thereby enhancing the separation of crude oil. Despite their utility, several challenges—such as uneven fluid distribution, fouling, and tube plugging—have compromised the performance of heat exchangers (HEX). These issues can result in some units failing to reach the desired temperature. This study assessed the performance of HEX at CGS X using Aspen HYSYS and Aspen Exchanger Design and Rating (EDR) software, concentrating on key parameters including the heat transfer coefficient, pressure drop, and fluid velocity. The analysis revealed that low fluid velocity within the shell increased the risk of fouling, and a fouling resistance exceeding 0.03 ℉·hr·ft²/Btu significantly diminished efficiency. To address this, a redesigned heat exchanger (HEX) was proposed to optimize fluid velocity, achieving a rate of 1.15 ft/s. This adjustment reduced fouling and enhanced heat transfer while maintaining economic feasibility by decreasing the required heat transfer area. Operational recommendations based on the performance evaluation included making appropriate fluid distribution adjustments and conducting timely maintenance to ensure reliable operation
Pengurangan Impor Sodium Klorat di Indonesia melalui Desain ClO2 Semi-Integrated pada Modifikasi ClO2 R8 Plant 10 Ton/Hari Manik, Boy Jansen Roberto; Amri, Idral; Paratenta, Maria
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 5 No 1 (2024): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.5.1.1-10

Abstract

Pulp production always has a bleaching process that uses chlorine dioxide (ClO2) as a bleaching pulp agent. One of the ClO2 production units that are used in the Pulp Industry in Indonesia is a ClO2 R8 non-integrated plant with the process of reacting sodium chlorate, sulfuric acid, and methanol. This ClO2 production type has a weakness, especially in supplying the raw material sodium chlorate, which is needed to import, and the characteristics are easy to explode, making production costs high. This research aims to modify the ClO2 R8 non-integrated by changing to a ClO2 semi-integrated plant. In this research, HYSYS was used to simulation to get mass and energy balance and other component data, and the design of equipment based on the American Society of Mechanical Engineers (ASME), Kern, internal data company, and others to get the specification equipment and also drawn using Autocad. The last step is to account for the economic for getting cost of production before and after modification, fixed capital cost, benefit, payback period, and return on investment. The resulting area, the first, modification of the ClO2 R8 plant by changing to ClO2 semi-integrated could produce chlorate solution 510 g/l which they use electrolyzers system from Chemetics with 20 cell M25 and hypo system. Second, the cost production for the ClO2 semi-integrated plant is 1393 USD/T, the benefit is 599.79 USD/year, the Payback period (PBP) is 6,65 years with an investment of about 3988 KUSD and RoI 15%.
Perbandingan Performa Antara Treatment Hydrochloric Acid dan Carboxylic Acid Terhadap Kenaikan Produksi pada Sumur Minyak Berat Itsnaini, Hafizh; Sunarno, Sunarno; Padil, Padil
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 5 No 1 (2024): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.5.1.11-18

Abstract

Duri steam flood is the largest hot steam injection project in Indonesia, facing challenges in preventing production declines. Objective project is showed decrease in production due to crustal deposition (scale). The Stiff and Davis method shows a Stability Index of 1.43, with a tendency for scale formation, especially CaCO3, in accordance with the Ryznar method. Increasing the production of x, yz layer wells in the Duri field, designing acidification stimulation with a pumping pressure of 400 psi, an injection rate of 2 bbl/minute and an acid volume of 600 gallons, after that comparing the performance of hydrochloric acid and carboxylic acid. Analysis showed that hydrochloric stimulation resulted in a significant increase in production of 115 BFPD / 8 BOPD (42% increase), while carboxylate stimulation showed a slower increase of 40 BFPD / 3 BOPD (24% increase). An economic evaluation shows chloride acidification produces an annual NPV gain of $48,002, compared to carboxylate acidification with an annual NPV gain of $22,554. Thus, chloride acidification proved to be economically profitable for the x, yz layers in the Duri field. This study highlights optimal acid stimulation strategies to mitigate scale-related production challenges in steam flood projects.
Karakteristik Pembakaran Briket Tandan Kosong Kelapa Sawit dan Emisi Gas Karbon Monoksida (CO) dari Pembakaran dengan Kompor Biomassa Variasi Bukaan Lubang Udara Hafidawati, Hafidawati; Yenie, Elvi; Agustariza, Alen
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 5 No 1 (2024): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.5.1.19-28

Abstract

Waste oil empty palm fruit bunches (EFB) one of the renewable energy sources with great potential and is produced approximately 21% of the entire palm oil processing process. Burning EFB briquettes using biomass stoves has a low combustion efficiency, so it has the potential to emit CO. The aim of this research is to determine CO gas emissions resulting from burning empty palm fruit bunch briquettes with variations in the number of holes in the biomass stove and compare them with the quality standards of Minister of Energy and Mineral Resources Regulation No. 047 of 2006. and see how the effect of air hole openings on biomass stoves with empty palm fruit bunch briquettes. In this study, co emission test was conducted using environmental combustion analyzer type 450 and biomass stove performance using water boiling test method. Testing was conducted with variations of air hole openings L1 (3.51 cm2), L2 (7.03 cm2), and L3 (10.55 cm2). The results of CO gas testing obtained by L1, L2 and L3 are 523.54 mg/ Nm3, 425.59 mg/ Nm3, and 351.13 mg / Nm3 and still meet the quality standards of ESDM no. 047 of 2006. Thermal efficiency of briquette stoves obtained in L1, L2 and L3 are 26.51%, 24.28% and 22.28% and for specific consumption rates obtained in L1, L2 and L3 are 3.47 grams/minute, 5.54 grams/minute and 7.17 grams/minute, this result didn’t meet the quality standard of SNI 7926-2013. Based on the results of the study, it was concluded that the smaller the opening of the briquette stove air hole, the more CO emissions produced, the higher the thermal efficiency and the smaller the consumption rate.
Pembuatan Minyak Atsiri dari Komoditas Alam Daun Kayu Putih Al'farisi, Cory Dian; Zahrina, Ida; Drastinawati, Drastinawati; Khairat, Khairat; Herman, Syamsu; Utami, Anggia Afza; Alfajar, Fariz
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 5 No 1 (2024): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Department of Chemical Engineering, Faculty of Engineering, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.5.1.29-35

Abstract

Eucalyptus oil is one of the essential oil obtained from the extraction of eucalyptus leaves. The purpose of this study is to evaluate the effect of variations in sample treatment and extraction time on the yield of eucalyptus essential oil and determine the characteristics of eucalyptus essential oil produced by the hydro distillation method. Variations in sample treatment were carried out by chopping, crushing, and blending dry eucalyptus leaves. 500 grams eucalyptus leaves are weighed and put in a 2000 mL flask. ±1000 mL of distilled water was added and the extraction process was carried out for 5, 6 and 7 hours. The results showed that the highest yield was obtained from blending treatment with an extraction time of 7 hours with a yield of 0.58%. Characteristic tests on eucalyptus leaf essential oil included: color, odor, specific gravity, refractive index and solubility in ethanol 80%. From the analysis of the test results, the color of eucalyptus oil is cloudy. The odor test results obtained are the distinctive odor of eucalyptus. The best value of eucalyptus oil specific gravity was 0.913 on crushed leaves for 6 hours. In the ethanol solubility test, the resulting oil dissolves in ethanol and a clear solution is obtained. The highest refractive index value of eucalyptus oil on chopped leaves for 5 hours is 1.469. Eucalyptus oil has a quality in accordance with the quality requirements of SNI 3954: 2014.

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