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All Journal Jurnal Bahan Alam Terbarukan Jurnal Teknologi Kimia Unimal Makara Journal of Technology Aceh International Journal of Science and Technology JURNAL REKAYASA KIMIA & LINGKUNGAN
Abrar Muslim
Department of Chemical Engineering, Faculty of Engineering, Universitas Syiah Kuala Darussalam, Banda Aceh 23111, Indonesia
Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Production of Single Cell Protein from Banana Peel Waste in Batch Fermentation Using Saccharomyces Cerevisiae Azwar, Azwar; Mukhlishien, Mukhlishien; Muslim, Abrar; Hadissa, Putri; Ningsih, Utari Hadi; Zanil, M. F.; Ali, J. M.
Jurnal Bahan Alam Terbarukan Vol 10, No 2 (2021): December 2021 [Nationally Accredited - Sinta 2]
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jbat.v10i2.34056

Abstract

Through engineering the fermentation process, it is hoped that new data can be obtained that will explain the ability of Saccharomyces cerevisiae to maximize the production of single-cell protein (SCP). SCP microorganisms have a high protein content, making them suitable for use as a human protein source as well as food additives in the cattle and fishing industries. The goal of this experiment is to see if the microbe Saccharomyces cerevisiae can generate SCP from banana peel waste. Some of the process variables used in this study include the variation in nutrition, fermentation time, and the effect of pH variations on SCP production. Where the variation in pH used is 3; 3.5; 4; 4.5; 5; and 5.5. As for the nutrients used, namely (NH4)2SO4 and KH2PO4 with a variety of nutrients, namely 0; 0.3; 0.6; 0.9; and 1.2 grams. Then the fermentation time was varied to 1,2,3,4 days. This study also analyzed the growth of microorganism cells using wet weight and dry weight with variations in pH and nutrition. The variation in nutrition is the same as the variation in the previous analysis of protein content, and the fermentation time is 1,2,3,4,5,6, and 7. In the analysis of protein content with Kjeldahl protein, the obtained optimal pH is 4.5 and the optimal protein content is 0.6 grams. As for the fermentation time, the optimal protein content is obtained on the 4th day. For the growth of microorganisms, the optimal pH is obtained at a pH value of 4.5 with optimal nutrition of 0.6 grams, and the optimal fermentation time is obtained on the 7th day.
Oxidation Process of H 2 O /UV for COD Reduction of Wastewater from Soybean Tofu Production Pontas, Komala; Muslim, Abrar
Makara Journal of Technology Vol. 19, No. 3
Publisher : UI Scholars Hub

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Abstract

Chemical Oxygen Demand (COD) reduction of wastewater from soybean tofu production was studied by conducting advanced oxidation process (AOP) using hydrogen peroxide with UV radiation catalysts in a closed cylindrical glass reactor. The hydroxyl radical (*OH) concentration from H2O2 decomposition was modeled, and exponential trends were found for the *OH concentration over radiation time and operation temperature. As a result, it was found that the maximal *OH concentration was 0.209 mol L-1 at 240 minutes and 50 °C. The *OH concentration exponentially increased following rise in operation temperature. The H2O2/UV AOP application reduced COD concentration to approximately 42.41% from 10,545 to 6,073.2 mol L-1 at 240 minutes and 50 °C. In addition, the pseudo second order kinetics is a reliable model to present the COD reduction kinetics with the correlation coefficient R2 in the range of 95.9 to 99.4%. The kinetics constant increased with rise in operation temperature, and it was approximately 2.30E-07, 2.590E-07, and 3.03E-07 L mg-1min-1 for 30, 40, and 50 °C, respectively. The activation energy of COD reduction obtained was approximately 0.0138 J mol-1.
Adsorption of Cu(Ii) Ions in Aqueous Solution Onto Limonia Acidissima Shellbased Activated Carbon: Kinetic and Isotherm Studies Muslim, Abrar; Said, Syahiddin Dahlan; Hariati, Gita Suci; Karina, Siti Fajar; Djuned, Fauzi Muhammad; Mulyawan, Rizka
Makara Journal of Technology Vol. 21, No. 3
Publisher : UI Scholars Hub

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Abstract

Adsorption of Cu(II) ions from aqueous solution using activated carbon prepared from Limonia acidissima fruit shell (LAFS-AC) was conducted in batch mode experiments at pH 5 (±0.15), 100 rpm and 1 atm. The effects of contact time, initial Cu(II) ions concentration, KOH concentration, and adsorption temperature on Cu(II) ions adsorption capacity were investigated. Fourier Transform Infrared Spectroscopy and Scanning Electron Microscopy analyses were performed to investigate the active site and surface morphology of the LAFS-AC, respectively. The Cu(II) ions adsorption was fitted very well (R2 = 0.94 on average) to the pseudo second-order adsorption kinetic with the adsorption capacity and rate being 25.58 mg/g and 0.07 g/mg.min, respectively at 27 oC by the LAFS AC activated using 0.5 M KOH. It was 26.88 mg/g and 0.15 g/mg.min, respectively at 60 oC. The Cu(II) ions adsorption followed the Langmuir adsorption isotherm model (LAIM) (R2 = 0.98 on average). The LAIM adsorption capacity and constant were 26.67 mg/g and 0.03 L/g, respectively at 27 oC. It increased dramatically to 0.09 L/g at 60 oC. The optimal adsorption condition obtained was the 0.5 M KOH activated LAFS-AC, initial Cu(II) concentration of 509.81 mg/L and 120-min contact time at 60 oC with the Cu(II) ions adsorption capacity of 26.95 mg/g.
Phosphate Removal from Aqueous Solutions using Activated Carbon Derived from Nypa fruticans Amelia, Marysha; Abdullah, Faisal; Muslim, Abrar; Meilina, Hesti; Saiful, Saiful
Aceh International Journal of Science and Technology Vol 13, No 3 (2024): December 2024
Publisher : Graduate School of Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/aijst.13.2.42587

Abstract

Nypa fruticans (NF) waste which includes the empty fruit bunches and shells (NFW), frond (NFF) and leaflets (NFL) composes primarily of hemicellulose, cellulose and lignin, shows great potential as a raw material for activated carbon (AC). This study investigated the removal of phosphate from aqueous solutions using activated carbon derived from Nypa fruticans. The NFW, NFF and NFL was pyrolyzed and physically activated in a tube furnace. FTIR analysis revealed that the NFW-AC, NFF-AC and NFL-AC exhibited functional groups such as chemical functional group O-H, C-O-C, C-O, C=O, C-O and C-H stretching in hemicellulose, cellulose and lignin, which were associated with phosphate (PO4) adsorption. Among these, the NFW-AC showed the lowest transmittance and higher pore density. Adsorption experiments indicated a rapid initial adsorption within the first 5 min, followed by minimal changes until equilibrium was reached at 30 min. The NFW-AC showed the best performance with the highest efficiency (40.05%) and capacity (85.85 mg/g). Adsorption kinetics for all activated carbon were better described by the pseudo-second-order model, with highest capacities of 60.606 mg/g and adsorption rates of 0.0235 g/mgmin attributed to NFW-AC. The adsorption isotherms followed the Langmuir mode, yielding capacities of 60.606 mg/g, 31.546 mg/g and 8.1967 mg/g for the NFW-AC, NFF-AC, and NFL-AC, respectively. These findings demonstrated the potential of Nypa fruticans-based activated carbon for phosphate adsorption
ADSORPSI ION LOGAM CD (II) DENGAN MENGGUNAKAN ADSORBEN DARI KULIT PINANG (ARECA CATECHU. L) Deri, Nur Octavia; Muslim, Abrar; Husin, Husni; Zulfikar, Zulfikar
Jurnal Teknologi Kimia Unimal Vol. 13 No. 2 (2024): Jurnal Teknologi Kimia Unimal - Nopember 2024
Publisher : Chemical Engineering Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/jtku.v13i2.19432

Abstract

Penelitian ini bertujuan untuk melihat kemampuan kulit pinang dalam menyerap ion logam Cd (II), menentukan pengaruh konsentrasi awal adsorbat dan waktu pengontakan terhadap efisiensi penyerapan ion logam Cd (II). Untuk menganalisa kadar logam Cd (II) digunakan alat Spektrofotometri Serapan Atom (AAS). Variabel tetap yang digunakan pada massa adsorben (1 gram), volume larutan umpan (100 ml) dan kecepatan pengadukan (75 rpm). Variabel berubah terdiri dari konsentrasi larutan (9,83; 49,16; 98,32; 245,81; 511,62; dan 1023,24 ppm) dan waktu kontak (0, 10, 30, 60, dan 90 menit). Parameter penelitian yang ditinjau meliputi kapasitas adsorpsi, efisiensi penyerapan, dan hubungan temperatur operasi terhadap kapasitas adsorpsi. Dari hasil penelitian diperoleh adsorpsi optimum terjadi pada konsentrasi larutan 1023,24 mg/L pada aktivasi kimia KOH 1 M dan pH 7. Nilai kapasitas adsorpsi dan nilai efisiensi penyerapan pada saat kesetimbangan berturut-turut adalah sebesar 99,781 mg/g dan 97,51%. Pada suhu ruangan dengan variasi konsentrasi awal larutan Cd (II) (1023,24; 511,62; 98,32; 49,16; 9,83 mg/L), adsorpsi kemungkinan menyerupai isotherm Freundlich dengan nilai korelasi (R2) 0,930. Untuk konstanta Freundlich (Kf) sebesar 4,32 mg/g, dan nilai 1/n sebesar 1,67. Pada suhu ruangan dengan konsentrasi awal larutan Cd (II) 1023,24 mg/L, adsorpsi mengikuti model kinetika orde dua dengan nilai konstanta kinetika (k2) sebesar 0,422 min-1 dan nilai kapasitas adsorpsi pada saat kesetimbangan (qe) adalah sebesar 89,158 mg/g.
Biosorbent Prepared from Calotropis Gigantean Stems for Adsorption of Cu(II) Ions from Aqueous Solution Husna, Asmaul; Abdullah, Faisal; Muslim, Abrar; Suhendrayatna, Suhendrayatna; Meilina, Hesti
Jurnal Rekayasa Kimia & Lingkungan Vol 16, No 1 (2021): Jurnal Rekayasa Kimia & Lingkungan (June, 2021)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v16i2.18677

Abstract

Calotropis gigantea stems (CGS) has the potential to use as biosorbent for adsorption of Cu(II) ions. In this study, the CGS biosorbent (CGSB) was prepared by drying and grounding. The effect of independent variables on adsorption capacity were investigated. As the result, the maximum adsorption capacity of 53.457 mg/g was obtained the optimal condition which was initial Cu(II) ions concentration of 567.47 mg/L, CGSB size of less than 230 mesh, CGSB mass of 1 g, temperature of 27 oC, pH 5, and contact time of 60 min. The CGSB surface morphology was analysed using SEM. The adsorption of Cu(II) ions fitted well with pseudo first-order adsorption kinetic (PFO-AK) model (R2=0.99), and the PFO-AK adsorption capacity and rate constant obtained were 70.194 mg/g and 0.0877 g/mg.min, respectively. The adsorption isotherm of Cu(II) ions was in accordance with Freundlich model (R2=0.99), and the intensity and volume constants attained were 0.876 and 1.017 L/mg, respectively. This result showed that physical adsorption occurred dominantly than chemical adsorption. The application of CGSB on the wastewater of initial Cu(II) ions concentration of 389.31 mg/L from ex-mine pool of acid mine drainage (AMD) in Jantang village, Lhoong District, Aceh Besar, Aceh Province resulted in adsorption capacity of 37.52 mg/g with adsorption efficiency of 66.13%.
Gold Loading on Ion Exchange Resins in Non-Ammoniacal Resin-Solution Systems Muslim, Abrar
Jurnal Rekayasa Kimia & Lingkungan Vol 7, No 4 (2010): Jurnal Rekayasa Kimia & Lingkungan
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

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Abstract

The loading of gold using strong base anion exchange resin in non-ammoniac resin-solution (NARS) systems has been studied. The loading of gold onto ion exchange resins is affected by polythionate concentration, and trithionate can be used as the baseline in the system. The results also show that resin capacity on gold loading increases due to the increase in the equilibrium thiosulfate concentration in the NARS system. Gold loading performances show the need of optimization the equilibrium concentrations of thiosulfate in the NARS system.Keywords: equilibrium, gold loading, resin capacity, thiosulfate, trithionate
Co-Authors Ali, J. M. Amelia, Marysha Asmaul Husna Azwar Azwar Deri, Nur Octavia Djuned, Fauzi Muhammad Faisal Abdullah Hadissa, Putri Hariati, Gita Suci Hesti Meilina Husni Husin Karina, Siti Fajar Komala Pontas Mukhlishien, Mukhlishien Mulyawan, Rizka Ningsih, Utari Hadi Saiful Saiful Suhendrayatna Suhendrayatna Syahiddin Dahlan Said Zanil, M. F. Zulfikar Zulfikar