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Idral Amri
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Graduate Program of Chemical Engineering Faculty of Engineering Universitas Riau, Pekanbaru, Indonesia, 28293
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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 4 Documents
 1 
Search results for , issue "Vol 2 No 2 (2021): Journal of Bioprocess, Chemical, and Environmental Engineering" : 4 Documents clear
Upgrading Characteristics of Empty Fruit Bunch Biopellet with Addition of Bintaro Fruit as Co-firing Idral Amri; Aris Aprianto Cahyono; Bahruddin
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 2 No 2 (2021): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.3.1.1-8

Abstract

The low density of mass and energy are the main reason for the underutilization of great potential of Empty Fruit Bunch (EFB) as a raw material of alternative and renewable fuels. The using of bintaro fruit as co-firing and treatment of torrefaction – densification processes were believed to increase the density of mass and energy of the EFB biopellet. This study aims to determine the effect of residence time, compaction pressure, and addition of bintaro fruit to the characteristics of EFB biopellet according to ISO 17225-6 standards. Biopellet manufacture was carried out two processes sequence, namely the torrefaction process and the densification process. The torrefaction process was carried out at 275oC with residence time variations 30, 45, and 60 minutes. The densification process was carried out without binder with compaction pressure variations 30, 40, and 50 bar. The addition of bintaro fruit was intended as co-firing of EFB at a ratio 70:30. The best characteristics of biopellet were obtained under conditions of 60 minutes residence time and 50 bar compaction pressures with 3.00% of moisture content, 7.90% of ash content, 8.70% of volatile content, 80.40% of fixed carbon content, 4719.59 cal/gr of heating value, and 1.28 gr/cm3 of density. Characteristics of moisture content and volatile content decreased while ash content, fixed carbon content, and heating value increased with increasing residence time. Characteristics of density increased with increasing compaction pressure. Characteristics of proximate and heating value increased while density properties of biopellet decreased with the addition of bintaro fruit as co-firing.
Penentuan Kadar Bleaching Earth dan Phosporic Acid Pada Proses Degumming dan Bleaching Crude Palm Oil Wira Irawan Rossani; Bahruddin; Amun Amri
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 2 No 2 (2021): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.3.1.1-14

Abstract

Oil from palm oil processing into crude palm oil generally still contains impurities, so it is necessary to carry out a physical refining process which includes pre-treatment and deodorization processes consisting of degumming and bleaching processes to remove gum and other impurity components. The purpose of this study was to determine the ratio of phosphoric acid in the degumming process using phosphoric acid and the bleaching process using bleaching earth on the quality of crude palm oil and degumm bleach palm oil. The degumming treatment used phosphoric acid with several concentrations, namely 0.5% and 1%, which was compared with the control using bleaching earth with the percentage of use 0%, 0.5%, 1%, 1.5% and 2% (crude palm oil before degumming process and after degumming process). Analysis of crude palm oil quality includes free fatty acid (FFA), DOBI, peroxide value (BP), phosphorus content, water content, and iron content of crude palm oil and DBPO. The results of this study indicate that the process after degumming using phosphoric acid at a concentration of 0.5% produces ffa 2.01-3.30 %), DOBI (1.55-2.13), PV (0-1.64mg O2/100mg ), phosphorus (3.76-11.01 ppm), water content (0.21-0.43), iron content (0.17-0.54) . The degumming process using 1.0% phosphoric acid produces ffa 1.65-3.59 %), DOBI (1.68-1.91), PV (0-2.54mg O2/100mg), Phosphorus (2.24- 15.41ppm), water content (0.24-0.88), iron content (0.11-0.61). Which is effective for saving production costs in the treatment with 0.5% phosphoric acid concentration and the use of 1% bleaching earth.
Pemodelan Tekanan Bawah Permukaan Dengan Menggunakan Metode Time Series Dalam Proses Injeksi Slurry di Sumur Disposal Duri Field Bambang Sutrimo
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 2 No 2 (2021): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.1.2.1-12

Abstract

Oily sand and water contaminated with oil is part of the results of exploration and exploitation of petroleum categorized as hazardous and toxic waste (B3), it is necessary to carry out special processing into slurry fluid and injection into disposal wells. The main problem in the injection process is the increase in bottom hole pressure during the injection process which causes well plugging problems and hampers oil production activities in the Duri field. The main objective of this research is to determine the best model and safety factor in the injection process using the time series Arima Software ‘R’ method with the parameters of the slurry flow rate and slurry composition based on the injection strategy at injection well B. Forecasting Arima in well B with an injection flow rate of 2,3 m3/minute and a slurry concentration of 25% waste and 75% water is Arima model 3 (1,1,0) with the smallest value of Akaike Information Criteria (AIC) 2,773,98 and the smallest Schwarzt Bayesian Information Criteria (SBC) is 2,781, the average bottom hole pressure predicted is 1,256.4 psi and the average bottom hole pressure from the field data is 1,247.54 psi. Validation of the forecasting model for well B that the percentage of model error compared to field data in well B is 0.37%, Root Mean Square Error (RMSE) 4,85 and model error using pressure gradient 0,37%. Arima modeling can be applied to predict bottom hole pressure based on the injection strategy in the injection process to the disposal well.
Penentuan Stabilitas Penyimpanan Aspal Modifikasi Berbasis Karet Alam Padat Jenis Crumb Rubber Arya Wiranata
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 2 No 2 (2021): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jbchees.3.1.1-14

Abstract

The development of road infrastructure in Indonesia is very rapid to keep pace with the growth of vehicles. However, the structure of road pavements in Indonesia is not optimal and causes various problems due to overload and Indonesia's climate. Therefore, it is necessary to increase the performance of asphalt binders with additives such as natural rubber or better known as natural rubber modified asphalt. This study examines the effect of natural rubber content (crumb rubber standard Indonesian rubber 20), sulfur additive content, storage temperature, and storage time on the phase stability of natural rubber modified asphalt. Making crumb rubber modified asphalt samples begins with the mastication of crumb rubber in an open mill. Next, crumb rubber was melted at 200°C and mixed in asphalt with 8, 10, and 12% levels. The last stage is to test the stability of modified asphalt storage at a temperature of 160°C for 48 hours. The results showed that modified asphalt with various levels of rubber experienced storage stability problems after 48 hours. The addition of sulfur additives did not significantly affect storage stability. The optimum addition of natural rubber at 10% crumb rubber content with the difference in softening point (Tbottom – Ttop) reached 11.6°C.

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