Garuda - Garba Rujukan Digital

Bahruddin

RIAU UNIVERSITY

Author-ID : 3518921

Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Decision Sciences, Operations Research & Management Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology

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Optimasi Pembuatan Film Biodegradabel dari Komposit Pati Sagu – MCC yang Dimodifikasi dengan Asam Sitrat Trisuciati Syahwardini; Bahruddin; Ida Zahrina
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 1 No 2 (2020): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

Optimization is a way to find variable values that are considered optimal, effective, and efficient to achieve the desired results. The approach that is more often used for optimization problems with multi-variables is the desirability function. The components carried out by the optimization are microcrystalline cellulose (MCC) (x1), citric acid (x2), sorbitol (x3) with the response are Tensile Strength (Y1), Elongation (Y2), Modulus young (Y3), Biodegradability (Y4), and Water Uptake (Y5). Optimization is done by using Design Expert 10.0.1 Software. Through Desirability Function analysis, the optimum treatment composition was obtained at the MCC filler variation of 18% w / w starch, citric acid 3% w / w starch, and sorbitol 33% w / w starch with the optimum response value predicted for tensile strength (Y1) = 11.38 MPa; Elongation (Y2) = 13.54%; Young's modulus (Y3) = 118.05 MPa; Biodegradability (Y4) = 46.89%; and Water Uptake (Y5) = 52.13%. The combined desirability value is 0.551

Prediksi Kesetimbangan Cair-Cair Sistem Pati-PVA-Air dengan metode UNIFAC Lusiana Sri Wahyuni; Bahruddin; Ida Zahrina
Journal of Bioprocess, Chemical and Environmental Engineering Science Vol 1 No 2 (2020): Journal of Bioprocess, Chemical, and Environmental Engineering
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, UNRI

The manufacture of bioplastics by mixing PVA with starch, for example from sago, cassava, sweet potatoes, and potatoes and so on have been widely practiced. However, in some cases, blending of the polymers may not produce the desired properties due to the lack of miscibility between the mixed polymers. So that in making bioplastics a mixture of starch and PVA requires data support of the miscibility of raw materials for making bioplastics into water solvents. Miscibility can be predicted using UNIQUAC Functional - group Activity Coefficient (UNIFAC) method. The activity coefficient resulting from the UNIFAC calculation of the ternary system of starch, PVA and water shows that the activity coefficient of starch tends to increase with increasing starch composition, while the activity coefficient of PVA is not very stable. The water activity coefficient shows the opposite tendency. Temperature does not seem to have a significant effect on the composition of starch and PVA, from the calculation obtained the starch composition of 0.01045 - 0.15325 and PVA 0.38407 - 0.23860. Likewise, water shows that the heating temperature does not really affect the composition of the water. The calculation of the balance of the mixture is carried out to get the right composition for the mixture of starch, PVA and water to form a perfectly mixed mixture. The results of calculating the composition in equilibrium are shown in the ternary diagram. The diagram shows a single-phase graph, where if a mixture containing 2 components dissolves completely, it will form a single-phase region.

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

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.

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