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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 36 Documents
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K Karakteristik Magnetic Biochar Sebagai Adsorben Untuk Pemanfaatan Kembali Buangan Akhir POME Untuk Air Baku Industri Kesni savitri savitri
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 3 No 1 (2022): Journal of Bioprocess, Chemical and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

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Abstract

The current problem in the Palm oil industry is POME's final discharge failed to comply with discharge standards. This study aims to treat POME final discharge using magnetic biochars (MBC) and treated water can be reused as raw water for the palm oil industry. MBC were successfully produced from palm fronds through the pyrolysis process together with FeCl3.6H2O modification. MBC were characterized by acquiring elemental, functional groups, morphological and magnetic properties of adsorbent. The characterization showed embedded iron oxide crystals within the biochar structure with a magnetic strength of 12,14 emu/g which can assist the separation process of the powdered adsorbent from the treated water. The highest removal of COD, TSS, and color was 72.72%, 77.95%, and 84.30%, respectively with an 8.55 g/l magnetic biochar dosage and 150 minutes contact time. However, the results of the final POME effluent treatment have not all of the parameters reached the industrial water quality standard class 3.
Electronic Textile from Lyocell and Very Few Layer Graphene: Studies and Review Aminati, Ikha Setya; Amri, Amun; Amri, Evelyn
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 3 No 1 (2022): 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.3.1.30-39

Abstract

Electronic textiles (e-textiles) are generally made by coating fabrics with conductive particles to impart conductive and electromagnetic properties to textile fibers and filaments. E-textile can be made by several methods, such as "dip and dry", pad-dry, screen-printing, or injeksi printing. Lyocell is the latest generation of cellulose fibers that are used as textile raw materials. Lyocell has naturally hyperhydrophilic properties and greater moisture absorption. Then, graphene is a nanomaterial composed of carbon atoms with a hexagonal structure, it has a very high conductivity value, reaching 104 S/cm. Graphene can be produced in several forms, such as very few layer graphene (VFLG). This paper aims to improve understanding of the research and review of electronic textiles created by combining lyocell textile with very few layer graphene (VFLG). This composition can enable the formation of sustainable electronic textile composites.
Screening Polimer Untuk Eor (Enhanced Oil Recovery) Di Lapangan “X” Minyak Cekungan Sumatera Tengah Septiana, Dwi; Helwani, Zuchra; Abdurrahman, Muslim
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 3 No 1 (2022): 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.3.1.39-52

Abstract

Oil is the energy source that people demand and use the most right now. Recent years have seen a lot of interest in polymer flooding as a cutting-edge chemical-based enhanced oil recovery (EOR) solution. Field X Minyak Cekungan Sumatera is acceptable for chemical EOR (Polymer) testing with a success range of up to 70%. The polymer solution will follow the channel that the water has created, and because of its high viscosity, it tends to "block" this area of the reservoir, allowing previously immobilized oil to start flowing. This can improve sweep efficiency. In this study, four polymers will undertake screening tests on the basis of compatibility, concentration, viscosity vs. shear rate, filtration, screen factor, and thermal stability. The best results is polymer 2 after polymer screening included passing the compatibility test, producing the best viscosity compared to the other three polymers at the same concentration, FR 1.2, having the best screen factor value compared to the other three polymers, and passing the thermal stability test.
Pemanfaatan Activated Carbon dalam Meningkatkan Fungsi Koagulan untuk Pengolahan POME (Palm Oil Mill Effluent) Stefany, Cindy
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 3 No 2 (2022): 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.3.2.1-15

Abstract

POME is a colloidal suspension containing 95-96% water, 0.6-0.7% oil and 4-5% total fat and solids. POME waste treatment is carried out development by a combined method of adsorption and coagulation. This study aims to determine variations in the concentration of activated carbon and coagulants against the removal of COD and TSS from POME treatment water discharges and determine the optimum conditions of the combined process of adsorption and coagulation to the reduction of the resulting COD and TSS concentrations. POME materials are measured first pH, TSS and COD values before being treated. POME treatment with a combined method of adsorption and coagulation is carried out by adding activated carbon (3; 6; 9 mg / L) and PAC (0.2; 0.55; mg / L) at room temperature (25 ° C) for 20 minutes for the adsorption process and 1 minute for the coagulation process. The contact time lasts for 30 minutes, the optimization of process conditions is determined by response surface methodology (RSM). Parameters tested include TSS and COD levels. The factor that has the most significant influence on the COD response is activated carbon levels, and the factor that has the most significant influence on the TSS response is PAC. Optimum process conditions were obtained at activated carbon levels of 9 mg / L and PAC of 0.69 mg / L with a response of COD 430.272 mg / L and TSS 297.941 mg / L.
Paper Review: Aplikasi DES (Deep Eutectic Solvents) sebagai Katalis Hijau Aisha, Farra; Zahrina, Ida; Sunarno
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 3 No 1 (2022): 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.3.1.53-76

Abstract

Deep eutectic solvents (DES) were intoduced to overcome the drawbacks of conventional catalysts (H2SO4, HCl, H3PO4, p-toluene sulfonic acid) due to several advantages; biodegradibility, cheap raw materials, high thermal and chemical stabilities, low melting point, low volatility, low toxicity, simple preparation as well as its physicochemical properties (melting point, acidity, density, viscosity, solubility and polarity) are easy to modify. DES is a mixture of two or more compounds of hydrogen bonding acceptor (HBA) and hydrogen bonding donor (HBD). The hydrogen bond formed between HBA/HBD mixture resulting to lower lattice energy thus lowering its melting point. Previous authors had reported the application of DES as reaction medium exhibit excellent catalytic activity on product yields, conversions and reusabilities. The aim of this article is to attract attention more comphrehensive studies on the utilization of DES as potential green catalyst.
Analisa Spesifikasi Fluff, Pellet, dan Bricket Pelepah Kelapa Sawit sebagai Biomassa Co-firing untuk Pembangkit Listrik Ari Aditia Sukma Sukma; Padil; Ahmad Fadli
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 4 No 1 (2023): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

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Abstract

The abundance of palm frond waste in Indonesia makes it an ideal source as co-firing material to increase renewable energy consumption. Therefore, it is necessary to determine whether oil palm fronds in the form of fluff, pellets, and brickets can be used as co-firing fuel. This study also aims to see whether there are differences in the potential of hard and soft palm fronds as solid fuel for power plants, as well as to calculate its slagging and fouling risk. Palm fronds was dried and reduced in sized using a wood chipper then sifted with a 20 mesh sieve to obtain palm frond fluff, then the fluff was mixed with 22% tapioca adhesive (weight ratio of 20% of the biomass) to be molded into pellet. Meanwhile, wood brickets was prepared by pyrolyzing the hard fronds (T= 550oC, t= 5 min) and mixing the charcoal obtained with 22% tapioca adhesive (weight ratio of 30% of the biomass). From the results of the analysis carried out, it is known that palm frond bricket provides the best results with an NCV value of 7095 cal/g. On the other side, both hard frond fluff and soft frond fluff contains the same sulfur content (0.06%), thus the difference in using hard or soft fronds as co-firing fuel does not have much effect. Furthermore, based on the analysis of potential slagging and fouling, all types of oil palm frond samples studied are shown to have a low to medium risk level.
Pengaruh Gliserin dan Asam Asetat pada Pembuatan Bioplastik dari Tepung Tapioka dan Maizena Nurfatihayati Nurfatihayati; Cory Dian Alfarisi; Drastinawati Drastinawati; Aldo Seveno Mahendra
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 4 No 1 (2023): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

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Abstract

Bioplastics are destructive plastics that break down by the environment, humidity, and microorganism activity. Bioplastics can be used just like conventional plaques. Bioplastics include natural polymers made from plant and animal materials. Tapioca flour is pure starch obtained from the extraction of cassava milling and continues to amylose and amylopectin. Maize flour is flour obtained by grinding clean and good corn kernels through the process of obtaining skin, endosperms, institutions, and the tip of the hat. This research helps make bioplastics using tapioca flour as an adhesive and cornstarch as an efficient thickener. The use of tapioca flour and cornstarch in producing bioplastics was using the blending method. Variations in the amount of acetic acid were 2 ml, 4 ml, and 6 ml, the amount of glycerin was 2 ml, 4 ml, and 6 ml, and tapioca flour and cornstarch were 6 gr at 700oC. Bioplastics are made by mixing 6 gr tapioca flour and 6 gr cornstarch, 50 ml distilled water, and heated to a temperature of 700oC. Bioplastic test results announced by the fourth bioplastic (2.649 MPa), the best thickness possessed by the ninth bioplastic (0.12 mm), the best resistance needed by the eighth bioplastic (46.15%), and the fastest or best degradation time by bioplastics three and ninth (6 days). The effect of using glycerin is very dominant in the test results but not for the use of acetic acid.
Modifikasi Kitosan dari Limbah Udang menggunakan Metode Gelasi Ionik Nurfatihayati Nurfatihayati; Ahmad Fadli; Sunarno Sunarno; Allailus Syah Safara; Aulia Permatasari
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 4 No 1 (2023): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

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Abstract

Chitin contained in shrimp shells can be used as raw material for making chitosan which is then reprocessed into nanoparticle-sized chitosan which has many benefits. This study aims to synthesize nanoparticle chitosan using the ionic gelation method and determine the effect of variations in the concentration of formic acid, sodium tripolyphosphate (TPP), chitosan, and the volume ratio of chitosan: TPP on particle characteristics, which include particle size, polydispersity index, zeta potential, particle morphology, and functional groups of particles. The first step for making nanoparticle chitosan is to make a chitosan solution using a magnetic stirrer. After that, the TPP solution at a certain volume ratio between chitosan: TPP was added to the chitosan solution. Stirring is carried out for 1 hour with a stirring speed of 1200 rpm. Furthermore, the nanoparticle chitosan was characterized by using Particle Size Analyzer (PSA), zeta potential analyzer, Scanning Electron Microscopy (SEM), and Fourier Transform Infra-Red (FTIR). The synthesis of nanoparticle chitosan using the ionic gelation method has been successfully carried out, obtaining a particle size of 464.4 nm, a polydispersity index of 0.214, a zeta potential of +0.48, and a cross-link of chitosan-TPP particles is formed.
Hidrogenasi Simultan Pada Pirolisis Cangkang Sawit Menjadi Bio-Oil dengan Katalis ZSM-5 Anisa Mutamima; Syaiful Bahri; Sunarno; Wan Junaidi; Fathiyah Huwaidah
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 4 No 1 (2023): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

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Abstract

Increasing consumption of fossil fuels and decreasing oil production in Indonesia are the current energy problems. In order to overcome the threat of an energy crisis and optimize the potential of energy resources in Indonesia, research on renewable alternative energy is needed. One of the renewable energy sources is bio-oil. Bio-oil can be produced through the pyrolysis process of palm shell biomass using a ZSM-5 catalyst. In this study, the pyrolysis process was modified by adding hydrogen (hydrogenation pyrolysis), to produce bio-oil which has a higher calorific value. This study aims to determine the effect of pyrolysis temperature and ZSM-5 catalyst ratio on the yield of bio-oil in pyrolysis hydrogenation and to determine the physical and chemical characteristics of the resulting bio-oil. The pyrolysis hydrogenation process uses 50 grams of palm shells measuring -40+60 mesh, 500 ml silinap and a stirring speed of 300 rpm. The highest yield was obtained at a pyrolysis temperature of 320 oC and 2.5% ZSM-5 catalyst with a yield of 70.21%. The results of the physical characterization of bio-oil showed a heating value of 44.00 MJ/kg, a density of 0.972 g/ml, a viscosity of 1.021 cSt, a flash point of 49 oC, a pH of 3.8 and an acidity value of 51.51 g NaOH/g bio-oil. GC-MS analysis showed that the main ingredients of bio-oil were 50.29% acetic acid, 30.39% phenol, 8.19% methyl ester and 5.25% ethanol. The bio-oil obtained can be further processed to become an alternative energy source to replace petroleum.
Kultivasi Mikroalga Chlorella sp. Secara Fed-Batch Menggunakan Limbah Cair Tahu Untuk Produksi Lipid Sri Rezeki Muria; Fikri Miftahul Shiddiq; Irma Damayanti; Indra Purnama
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 4 No 1 (2023): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

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Abstract

Microalga is single cell organism that can live by photosynthesize resulting biomass and other secondary product such as protein, carbohydrate, and lipid by utilizing nutrients in wastewater. This study aims to get the data about the effect of additions of tofu liquid waste to the growth and increase of lipid content in the microalga that cultivated in tofu liquid waste media. Microalga were cultivated by variations in tofu liquid waste adding. The variations are 0,45 liter in every day, 0,9 liter in every two days, and 1,35 liter in every three days. Microalga growth were measured by an object glass, the amount of cell density in every square field calculated using tomacytometer with hand counter where observed under optical microscope. Total lipid content were gained by employ Bligh-dyer methode. The results of this study show the highest specific grow rate of Chlorella sp is 0,08692/day accounted from tofu liquid waste addition in every three days. The highest lipid content is 40,88 % which gained from tofu liquid waste addition in every day. Under unfavourable condition microalga will accumulate more lipid so that increase it lipid content. The highest chemical oxygen demand (COD) removal is 575 mg/mL.

Page 3 of 4 | Total Record : 36

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