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All Journal ASEAN Journal of Systems Engineering Majalah Forum Teknik UGM Jurnal Rekayasa Proses International Journal of Renewable Energy Development Jurnal Bahan Alam Terbarukan Jurnal Kimia dan Kemasan INDONESIAN JOURNAL OF PHARMACY Konversi Jurnal Kimia Terapan Indonesia Indonesian Journal of Chemistry Jurnal Rekayasa Proses ASEAN Journal of Chemical Engineering Jurnal Teknik Kimia Indonesia Jurnal Kimia dan Kemasan Envirotek : Jurnal Ilmiah Teknik Lingkungan Journal Of Sustainability Perspectives Journal of Sustainability Perspectives Jurnal Rekayasa Proses

Panut Mulyono

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Author-ID : 324871

Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Public Health Social Sciences

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Pengaruh Penambahan Surfaktan Sodium Lignosulfonat (SLS) dalam Proses Pengendapan Nano Calcium Silicate (NCS) dari Geothermal Brine M Ridho Ulya; Indra Perdana; Panut Mulyono
Jurnal Rekayasa Proses Vol 11, No 2 (2017)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.28245

High concentration of dissolved silica in geothermal brine frequently causes operational problem in production of steam for electric generation. Mitigation of silica scaling is necessary to reduce the risk of steam production failure. In the present work, silicic acid in Dieng geothermal brine was reduced by introduction of calcium hydroxide that lead to formation of insoluble nano calcium silicates (NCS).The purpose of this work was to control size of the precipitated NCS by introducing surfactant sodium lignosulfonate (SLS) as surfactant in the Ca(OH)2 added geothermal brine. The effect of temperature (30, 50 and 70°C), pH (7, 8 and 9), and surfactant concentration (0.05, 0.15 and 0.30% (w/v)) on the particle size of the resulting NCS was studied to obtain the optimum operating condition. The precipitation-sedimentation behavior of the resulting particles was measured in a vertical tube. Having measured the solid density and solution density and viscosity, average diameter of the precipitated particles was determined using stoke’s principle. The calculated particle size was the compared with measurement result using particle size analyzer (PSA). The soluble silica concentration in the solution was measured using spectroscopy method while composition of the resulting solid particles was measured using EDX and FTIR. Experimental results showed that the dissolve silica in Dieng geothermal brine can be reduced and controlled with the addition of Ca(OH)2 and surfactant SLS. The greater the concentration of surfactant SLS, the smaller the resulting particle size. It was found that the formation of NCS particles was accompanied with precipitation of silica and salts. The optimum condition of NCS formation was at temperature 30°C and pH 9 while the concentration of surfactant SLS added to the brine was 0.3 % (w/v).ABSTRAKKonsentrasi yang tinggi dari kelarutan silika dalam larutan geothermal menyebabkan masalah dalam pengoperasian produksi uap di PLTP Dieng. Mitigasi silika scaling diperlukan untuk mengurangi resiko kegagalan produksi uap. Dalam penelitian ini, asam silika dalam larutan geothermal direaksikan dengan kalsium hidroksida (Ca(OH)2) membentuk n ano calcium silicate (NCS). Tujuan penelitian ini adalah membentuk endapan NCS dari surfaktan SLS dan Ca(OH)2 ke dalam larutan geothermal. Mempelajari perubahan suhu (30, 50 dan 70°C), pH (7, 8 dan 9), dan konsentrasi surfaktan (0,05, 0,15 and 0,30% (w/v) serta mengetahui kondisi optimum. Pengujian yang dilakukan yaitu pengendapan partikel yang dilakukan di gelas ukur vertical, densitas padatan, densitas larutan, viskositas, dan diameter rata-rata partikel yang mengendap ditentukan dari persamaan diameter stokes. Kemudian membandingkan hasil perhitungan dari diameter stokes dengan particle size analyzer (PSA). Konsentrasi silika yang terlarut dapat diukur dengan metode spectroscopy dan komposisi padatan di uji dengan instrumen EDX dan FTIR. Hasil penelitian menunjukkan bahwa silika terlarut dalam larutan geothermal berkurang dan dapat dikontrol dengan penambahan Ca(OH)2 dan penambahan surfaktan SLS. Semakin besar konsentrasi surfaktan maka ukuran partikel akan semakin kecil. Pembentukan NCS dapat dihasilkan dan disertai juga dengan partikel silika dan garam. Kondisi optimum pembentukan NCS terjadi pada suhu 30 oC pH 9 dan konsentrasi surfaktan SLS 0,30 %w/v.

Kinetika Adsorpsi Nikel (II) dalam Larutan Aqueous dengan Karbon Aktif Arang Tempurung Kelapa Ardelita Adiningtyas; Panut Mulyono
Jurnal Rekayasa Proses Vol 10, No 2 (2016)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.33335

The adsorption kinetics of nickel (II) in aqueous solution with activated carbon from coconut shell was studied by measuring the nickel concentration in the solution (C) as a function of time (t). The parameters studied in this study were adsorption temperature (T), particle diameter of activated carbon (d), and mass ratio of activated carbon to aqueous solution (r). It was found that the adsorption rate increased with the increase of the adsorption temperature and the mass ratio of activated carbon to aqueous solution. On the contrary, it was found that the rate of adsorption decreased with increasing the particle diameter of the activated carbon. ABSTRAKKinetika adsorpsi larutan nikel (II) dalam air dengan karbon aktif tempurung kelapa dianalisis dengan mengukur konsentrasi nikel pada larutan sebagai fungsi waktu. Parameter yang digunakan pada penelitian ini adalah suhu adsorpsi (T), diameter partikel karbon aktif tempurung kelapa (d), dan rasio massa karbon aktif tempurung kelapa dengan larutan nikel (II) dalam air (r). Hasil penelitian menunjukkan bahwa laju adsorpsi meningkat dengan bertambahnya suhu adsorpsi dan rasio massa karbon aktif tempurung kelapa dengan larutan. Sedangkan, laju adsorpsi menurun dengan bertambahnya ukuran diameter partikel karbon aktif tempurung kelapa.

Recovery Ion Hg2+ dari Limbah Cair Industri Penambangan Emas Rakyat dengan Metode Presipitasi Sulfida dan Hidroksida Ilma Fadlilah; Agus Prasetya; Panut Mulyono
Jurnal Rekayasa Proses Vol 12, No 1 (2018)
Publisher : Departemen Teknik Kimia Fakultas Teknik Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jrekpros.34496

Unlicensed gold mining activities using mercury (Hg) as a gold element binder is called the amalgamation process. Mercury is a heavy metal and categorized as toxic material. The use of mercury can potentially cause a pollution in environment, especially the aquatic system. For overcoming the heavy metals of mercury in liquid waste, it needs an alternative wastewater treatment method e.g. chemical precipitation. This study is aimed to recover Hg2+ ions from liquid wastes by using sulphide precipitation and hydroxide methods. This research studied the effect of pH on Hg2+ ions which is deposited in the precipitation process and evaluated the rate of Hg2+ precipitation formation. Precipitation was carried out by using sodium sulphide (Na2S) 0.3 M and Ca(OH)2 0.004 M as a precipitation agent with a rapid mixing speed for about 200 rpm for 3 minutes and continued with slow mixing for about 40 rpm for 30 minutes. Then, the liquid sample was left for 24 hours to precipitate. The results showed that precipitation method by using Na2S solution can decrease the content of Hg in HgCl2 synthetic waste. Optimum mass of HgS precipitate of 0.046 g was achieved at pH 9 with a removal efficiency percentage up to 99.81%. The rate of formation of HgS precipitate is 0.4mg/ hour. While, hydroxide precipitation method can decrease mercury level up to 90.11% at pH 12 and mass of Hg (OH)2 precipitate obtained is 0.28 g. However, the result of EDX analysis of the precipitate of Hg (OH)2 showed that the content of Hg precipitate is still low at 0.28 wt.%. A B S T R A KKegiatan penambangan emas rakyat tanpa izin (PETI) dengan menggunakan merkuri (Hg) sebagai pengikat unsur emas disebut proses amalgamasi. Merkuri merupakan logam berat yang bersifat racun. Penggunaan merkuri ini berpotensi menimbulkan pencemaran di lingkungan sekitar, terutama lingkungan perairan. Untuk penanganan logam berat merkuri dalam limbah cair ini, maka diperlukan sebuah metode pengolahan limbah alternatif, yaitu metode presipitasi kimia. Penelitian ini bertujuan untuk me-recovery ion Hg2+ dari limbah cair dengan metode presipitasi sulfida dan hidroksida. Selain itu mempelajari pengaruh pH terhadap ion Hg2+ yang terendapkan dalam proses presipitasi dan mengetahui laju pembentukan endapan Hg. Presipitasi dilakukan dengan menggunakan natrium sulfida (Na2S) 0,3 M dan Ca(OH)2 0,004 M sebagai agen presipitan dengan pengadukan cepat 200 rpm selama 3 menit dan dilanjutkan dengan pengadukan lambat 40 rpm selama 30 menit. Larutan sampel didiamkan selama 24 jam untuk mengendapkan presipitat yang terbentuk. Hasil penelitian menunjukkan bahwa metode presipitasi menggunakan larutan Na2S dapat menurunkan kadar Hg pada limbah sintetik HgCl2. Massa endapan HgS optimum sebesar 0,046 g larutan dicapai pada pH 9 dengan persentase efisiensi penyisihan hingga 99,81 %. Laju pembentukan endapan HgS diperoleh sebesar 0,4 mg/jam. Sedangkan metode presipitasi hidroksida dapat menurunkan kadar merkuri hingga 90,11% pada pH 12 dengan massa endapan Hg(OH)2 yang diperoleh adalah 0,28 g. Akan tetapi hasil analisis EDX endapan Hg(OH)2 memperlihatkan bahwa kandungan Hg dalam endapan tersebut masih sangat kecil yaitu sebesar 0,28%.

KARAKTERISTIK BIO-OIL HASIL PIROLISIS AMPAS TEBU Emi Erawati; Wahyudi Budi Sediawan; Panut Mulyono
Jurnal Kimia Terapan Indonesia Vol 15, No 2 (2013)
Publisher : Research Center for Chemistry - LIPI

Bagasse (Saccarum oficinarum L) is a waste of sugar mills that can be utilized for a variety of chemicals. The purposes of this study are to determine the percentage of compounds and physical properties of bio-oil, to determine the effect of variations of particle size and heating rate on the yields of bio-oil. Pyrolysis has been carried out in a reactor made of steel pipe type 5737 with dimension: diameter 7.62 em and a length of 3 7 cm.. The reactor was inserted into the furnace with a diameter of 15.24 em and a length of 40 em. One hundred and fifty grams of bagasse (Saccarum oficinarum L) has been inserted into the reactor without the presence of oxygen at atmospheric pressure. Pyrolysis has been carried out at the particle size of (-20+25) mesh, (-25+30) mesh, (-30+35) mesh, (- 35+40) mesh, and -40 mesh with electrical voltage of 100, 105, 115, and 120 volt. Produced of bio-oil has the following properties: brown color, pH of 2.96 to 3.03, viscosity of 1.3306 to 1.5101 cp, and density of 1.03 to 1.5 g/mL. The largest content of the compound is acetic acid (59, 72%). The highest yields percentage of the particle size is (40,32%) on (-20+25 mesh) with the highest yields percentage of electrical voltage is 38,82% on 105 volt.Keywords : Bagasse, acetic acid, bio-oil, pyrolysis, yields

Extraction of Flavonoids from Merremia mammosa Using Ethanol Solvent in a Fixed-Bed Column Panut Mulyono; Alfita Sofia Yuzki; Maulid Diana Sari; Nur Rofiqoh Eviana Putri
ASEAN Journal of Chemical Engineering Vol 22, No 1 (2022)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ajche.70012

This research aims to investigate the best operating condition for the extraction process of flavonoids from Merremia mammosa root by determining the mass transfer coefficient (Ke). The root was prepared by drying, crushing, and sieving into a homogeneous size and then extracted in a fixed-bed column using 70 wt% of ethanol as a solvent for 2 hours. The obtained samples were then analyzed every 30 min using high-performance liquid chromatography. The parameters investigated in this research were particle size of 1.275, 1.85, and 4.01 mm and solvent flow rate of 3, 6, and 9 mL/s. Based on the experimental data, the value of Ke was calculated using the Hooke-Jeeves numerical method of optimization. The results showed that the decrease in particle size and the increase in solvent flow rate could increase the Ke values, leading to the high concentration of flavonoids extracted using the solvent. The Ke values obtained in this research ranged from 0.3145 m/s to 0.7880 m/s. The empirical equation that shows the correlation between Ke and the parameters can be expressed as Sh = 1.10 × 1014 Re0.0564 (1 − ε)0.8718 with a relative error of 6.13% compared with the experimental data (Sh is the Sherwood number, Re is the Reynolds number, and ε is the porosity of the fixed-bed column).

Equilibrium Study on Reactive Extraction of Lactic Acid with Tri-n – Butyl Phosphate in n - Hexane Panut Mulyono; Anita Pardah
ASEAN Journal of Chemical Engineering Vol 12, No 2 (2012)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Extraction of carboxylic acids from dilute aqueous solution using traditional solvents such as ketones, alcohols, ethers, and ester is inefficient because the distribution ratio is rather low. Reactive extraction which exploits reversible chemical complexation is an effective separation process for extraction of carboxylic acids from aqueous streams such as fermentation broths and wastewaters. In the extraction process, selection of the solvent is an important aspect to be considered. Considering its solubility in water, cost and availability, tri-n-butyl phosphate (TBP) seems to be an attractive solvent for the extraction of lactic acid from aqueous solution. The purpose of this experiment is to study the equilibrium of the reactive extraction of lactic acid in aqueous solution with TBP in n-hexane. The parameters studied in this experiment were initial concentration of lactic acid in the aqueous phase, TBP concentration in n-hexane phase, and the extraction temperature. The experiments at ambient temperature were carried out using a separatory funnel, while the experiments at other than ambient temperature were carried out using erlenmeyer flask and water bath shaker to adjust the temperature. In this experiment, the initial concentration of lactic acid was varied from 0.1 to 0.5 gmol/dm3. The range of initial TBP concentrations in n-hexane was 0.1 to 1.0 gmol/dm3 and the extraction temperature range was 283 to 313 K. The experimental results showed that the higher the initial concentration of lactic acid in aqueous solution, the higher the distribution ratio for a fixed TBP concentration and extraction temperature. For a fixed initial concentration of lactic acid in aqueous solution and extraction temperature, the distribution ratio of lactic acid is increased by increasing TBP concentration. The overall equilibrium constants (Kpq) for the experiments using TBP concentration ranging from 0.1 to 1.0 gmol/dm3 at the extraction temperature of 293 K are calculated to be 0.0668 to 0.5144. Kpq for the experiments at the temperature ranging from 283 to 313 K at the initial concentration of lactic acid of 0.2 gmol/L are found to be 0.0122 to 0.8856. The Kpq as a function of temperature (T) in K can be expressed as ln Kpq = 10,596/T - 38.08 with sum of square of error of 0.14.

Equilibrium in the Reactive Extraction of Aqueous Phenol Using Tributyl Phospate in n-Hexane Panut Mulyono; Sofiyah Sofiyah; Ahmad Muhajir Kahuripan
ASEAN Journal of Chemical Engineering Vol 10, No 2 (2010)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Phenol is a hazardous chemical which usually contained in the wastewater from some industries, such as oil refineries, coal processing, and plastics. Phenol is dangerous substance to a microorganism although in low concentration in wastewater. According to the United State Environmental Protection Agency, the maximum concentration of phenol in wastewater is 1 ppm. This requirement is lower than the concentration of phenol in normal wastewater discharged from industries that is 100 to 1000 ppm. Phenolic substances are very difficult to be destroyed by oxidation in the present of microorganism. Chemical oxidation of phenolic substance using ozone or combination between the ozone and UV irradiation is impossible to handle huge amount of wastewater due to the expensiveness of ozone production and also its low solubility in water. The prospective method to recover of phenol from wastewater is reactive extraction in which phenol makes a complex with the extractant. This research investigated the equilibrium of the reactive extraction of phenol from water using tributyl phosphate (TBP) in n-hexane. An equilibrium model has been developed in this research and the laboratory experiments have been carried out. The parameters of the laboratory experiment are the initial concentration of TBP in n-hexane, and the extraction temperature. The experimental results showed that the higher the TBP concentration in n-hexane, the higher the amount of phenol which can be extracted to the organic phase. The correlation between the distribution coefficients (Kc) with the ration of TBP concentration (CoTBP) to the initial TBP concentration (CoiTBP) in n-hexane can be formulated by Kc=11.59-12.002(CoTBP)/(CoiTBP) with the sum of square of error of 10.87%. The lower the extraction temperature, the higher the amount of phenol extracted to the organic phase. The correlation between the distribution coefficients with the temperature (T) can be approached by Kc=1505.45(1/T)-4.06 with the sum of square of error of 2.63%. The value of distribution coefficient of physical equilibrium (Kp) decreases with the increase of temperature, meanwhile the value of the equilibrium constant of solvation reaction (Kr) is increase with increasing the temperature. The expression of Kr as a function of temperature is Kr=-2.8636(1/T)+0.0133 with the sum of square of error of 0.04%.

CO2 Adsorption on HZSM-5 Zeolite : Mass Transport Study in A Packed Bed Adsorber Sang Kompiang Wirawan; Ihda Novia Indrajati; Wahyudi Budi Sediawan; Panut Mulyono; Derek Creaser
ASEAN Journal of Chemical Engineering Vol 8, No 1 & 2 (2008)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Experimental and modeling have been done to study and to determine the diffusion parameters of CO2 adsorption on HZSM-5 zeolite in a packedbed adsorber. Experiment works consisted of tracer and adsorption experiments. The feed gas concentrations were 40 and 80% CO2 in helium within various temperatures of 373, 423 and 473 K. The experiments were conducted by using transient step change adsorption. Tracer experiments using 20% Ar/He were conducted to measure dispersion and time lag effect of the packed bed system. A model of CO2 adsorption on HZSM5 had been set up for transient packedbed adsorber by assuming plug flow, isothermal and isobaric, single site Langmuir physisorption, no gas film mass transport resistance and MaxwellStefan mass transport in micropore applied. All the data were then optimized to get the best value of modified fitted parameter. The results indicated that at higher temperature, the quantities of gas adsorbed were decrease. This was due to lower adsorption capacity which occurs at higher temperature. The model was in a good agreement with the experiment data. Diffusivity tended to increase by increasing temperatures.

Effect of Surfactant on Single Drop Mass Transfer in Liquid-Liquid Extraction Panut Mulyono; Setia Muliati
ASEAN Journal of Chemical Engineering Vol 7, No 1 & 2 (2007)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Liquid-liquid mass transfer coefficients for single freely rising drops in the presence of surfactant in an extraction column have been investigated using the system of kerosene-acetic acid-water. The surfactant used in this study was alkyl benzene sulfonate (ABS). The experiments were carried out by bubbling kerosene-acetic acid solution as a series of single drops from the bottom of a column containing water-ABS solution. The column used in this experiment was made from glass of 36 mm inside diameter and constructed of 60, 120, and 180 cm height. The effects of surfactant concentration, column height, and drop diameter on the overall mass transfer coefficient have been studied. The data can all be correlated by Shd = 2.08 x10−5 Red 4.01 We −1.97 (dd / H ) 0.68 with an average deviation of 17.72%. This equation is valid for the ranges of Red from 186.68 to 402.19, We from 0.80 to 3.33, and dd/H from 0.0028 to 0.0105.

Studi Optimasi Komposisi Red Mud dan Asam Sitrat untuk Phytomining Hakim, Gilang Lukman; Agus Prasetya; Panut Mulyono; Himawan Tri Bayu Murti Petrus
Envirotek : Jurnal Ilmiah Teknik Lingkungan Vol. 16 No. 2 (2024): Envirotek: Jurnal Ilmiah Teknik Lingkungan
Publisher : Universitas Pembangunan Nasional Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/envirotek.v16i2.1921

Red mud merupakan limbah pengolahan bauksit yang saat ini menjadi permasalahan serius dikarenakan sifatnya yang sangat basa, volume produksi yang tinggi, dan mengandung logam berat. Namun, red mud memiliki sisi positif berupa kandungan logam tanah jarang yang dapat di-recovery. Salah satu metode ramah lingkungan yang dapat diterapkan yakni phytomining dikarenakan metode ini dapat sekaligus meremdiasi red mud. Agar phytomining dapat diterapkan dibutuhkan pengkondisian terlebih dahulu agar kondisi pH red mud dapat sesuai untuk ditanami tanaman. Penelitian ini bertujuan untuk mengevaluasi kondisi pH dan konduktivitas media tanam dengan cara mengoptimasi komposisi red mud dan dosis asam sitrat. Pada aplikasi Design Expert, dilakukan variasi level komposisi red mud yaitu (10%, 30%, dan 50%) dan dosis asam sitrat (20 mg/g, 60 mg/g, dan 100 mg/g) sehingga menghasilkan 13 percobaan. Hasil analisis ANOVA menunjukkan komposisi red mud 39.66% dan dosis asam sitrat 20,63 mg/g menghasilkan nilai pH 8,055, mendekati kondisi pH ideal media tanam yang berada pada rentang pH 8,0 – 8,5. Hasil penelitian menunjukkan potensi optimasi red mud dan asam sitrat dalam pengkondisian media tanam yang ideal untuk praktik phytomining.

Co-Authors ., Jumina Abdul Karim Zulkarnain Agus Prasetya Ahmad Muhajir Kahuripan Alfita Sofia Yuzki Anita Pardah Ardelita Adiningtyas Arief Budiman Budi Nininga Widarti, Budi Prayitno Derek Creaser Dita Budi Wibawa Emi Erawati Eni Budiyati Fadlilah, Ilma Faridah Faridah H Heriyanto Hakim, Gilang Lukman Himawan Tri Bayu Murti Petrus I Made Bendiyasa I Made Bendiyasa I Made Miasa Ihda Novia Indrajati Indra Perdana Indra Perdana Iqbal Haitami M Ridho Ulya Martomo Setyawan Maulid Diana Sari Muslikhin Hidayat Noviana Utami Ciptaningtyas Suhartaya Nur Rofiqoh Eviana Putri Pradana, Yano Surya Prasakti, Laras Rochmadi - S Sarto S Sarto Salis, Fiki Rahmatika Sang Kompiang Wirawan Setia Muliati Siti Nurul Aisyiyah Jenie, Siti Nurul Aisyiyah Siti Syamsiah Slamet Sumardi, Slamet Sofiyah Sofiyah Sujoto, Vincent Sutresno Hadi Suryo Birowo Suryo Purwono Sutijan Suyanti Suyanti Tri Mustika Uli Karyani Utami, Sentagi Sesotya Wahyudi Budi Sediawan Wahyudi Budi Sediawan Wahyudi Budi Sediawan Warmita, Helena Karunia Widi Astuti Winoto, Gilbert Wisnu Madha Kusuma

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