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All Journal Reaktor International Journal of Science and Engineering (IJSE) International Journal of Renewable Energy Development JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Waste Technology JRST (Jurnal Riset Sains dan Teknologi) Indonesian Journal of Chemistry ASEAN Journal of Chemical Engineering Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Jurnal Teknik Kimia Indonesia Jurnal Global Ilmiah Bulletin of Chemical Reaction Engineering & Catalysis

Tutuk Djoko Kusworo

Departemen Teknik Kimia, Fakultas Teknik Universitas Diponegoro

Author-ID : 2955353

Aerospace Engineering Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Social Sciences Other

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The effect of pH and operation mode for COD removal of slaughterhouse wastewater with Anaerobic Batch Reactor (ABR) Maria Octoviane Dyan; Gita Permana Putra; Budiyono Budiyono; Siswo Sumardiono; Tutuk Djoko Kusworo
Waste Technology Vol 3, No 1 (2015)
Publisher : Diponegoro University

Disposal of industrial wastes in large quantities was not in accordance with today's standards of waste into environmental issues that must be overcome with proper treatment. Similarly, the abattoir wastewater that contains too high organic compounds and suspended solids. The amount of liquid waste disposal Slaughterhouse (SW) with high volume also causes pollution. The research aim to resolve this problem by lowering the levels of BOD-COD to comply with effluent quality standard. Anaerobic process is the right process for slaughterhouse wastewater treatment because of high content of organic compounds that can be utilized by anaerobic bacteria as a growth medium. Some research has been conducted among abattoir wastewater treatment using anaerobic reactors such as ABR, UASB and ASBR. Our research focuses on the search for the optimum results decline effluent COD levels to match the quality standards limbah and cow rumen fluid with biodigester ABR (Anaerobic Batch Reactor). The variables used were PH of 6, 7, and 8, as well as the concentration ratio of COD: N is 400:7; 450:7, and 500:7. COD value is set by the addition of N derived from urea [CO(NH2) 2]. COD levels will be measured daily by water displacement technique. The research’s result for 20 days seen that optimum PH for biogas production was PH 7,719 ml. The optimum PH for COD removal is PH 6, 72.39 %. The operation mode COD:N for biogas production and COD removal is 500:7, with the production value is 601 ml and COD removal value is 63.85 %. The research’s conclusion, the PH optimum for biogas production was PH 7, then the optimum PH for COD removal is PH 6. The optimum operation mode COD:N for biogas production and COD removal was 500:7

PEMBUATAN ASIMETRIK MEMBRAN UNTUK PENGOLAHAN AIR : PENGARUH WAKTU PENGUAPAN TERHADAP KINERJA MEMBRAN Ardian Dwi Yudhistira; Fajar Budi Iswanto; Tutuk D. Kusworo
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Membrane is the newest technology on water purification. Asymmetric membrane is one type of membrane that has a different pore size between surface (dense layer) and bottom layer. Surface layer has a very thin dense skin layer which use for filter, and bottom layer with a bigger pore size that use for support media. With such a structure, an asymmetric membrane can produce a higher flux than symmetric membrane. In membrane fabrication process, evaporation time becomes important because it can increase flux. Therefore, in this research will be assessed the effect of evaporation time as a variable. The purposes of this research are to make an asymmetric membrane using cellulose acetate polymers, to determine the effect of evaporation time toward morphology structure and membrane performance. Membrane was fabricated by phase inversion method with a variation of evaporation time 10, 15, and 25 second. Membrane composition consist of 23% CA, 5% PEG, and 1% tap water. Membrane was characterized by flux, rejection, and morphology analysis using SEM. Flux and rejection were measured using brackish water as a feed. The result of FTIR test, the membrane consist of the functional group -OH, C=O, CH3 - COOH, C-O-C ether and evaporation time of solvent make a different in absorption of diagnostic peek frequency. The result of SEM analysis, Asymmetric membrane was produced in this research. Membranes with optimum performance was obtained on the composition of 23% CA, 5% PEG, 1% tap water, and 25 second evaporation time with flux 4,465 L.Mˉ².h-1.bar-1, and percent rejection NTU 92%, percent rejection TDS 85%, and percent rejection Ca 81%,

PEMBUATAN ASIMETRIK MEMBRAN SELULOSA ASETAT UNTUK PENGOLAHAN AIR : PENGARUH KONSENTRASI ZAT ADITIF TERHADAP KINERJA MEMBRAN Aprian Indra Wibowo; Ganang Dwi Harjanto; Tutuk D. Kusworo
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3559.802 KB)

Membrane is a thin layer, a barrier between two phases that are semipermeable, and serves as a selective separation media. Asymmetric membrane is a membrane that consists of three layers, they are dense layer, intermediate, and porous substructure. With that structure, asymetric membrane produce higher flux than simetric membrane. In the process of membrane manufacture, the concentration of additives that are added is important because it can affect membrane flux and rejection.. The purposes of this research are make an asymmetric membrane using cellulose acetate polymer and determine the effect of different additives concentration toward morphological structure and membrane performance. Membranes prepared by phase inversion method with a variation of the additive concentration of 2,5%, 3,5%, and 5% wt. Membranes composed of 23% CA and evaporation time used is 25 seconds. Membrane was characterized by flux, rejection, and morphological analysis using SEM. Flux and rejection were measured by brackish water as a feed. The results of FTIR analysis showed the larger absorption peaks indicates that the increasing concentrations of PEG addition make the PEG molecular weight and the unit re-CH2-CH2O- greater. The results of SEM analysis showed all the membranes that are formed has an asymmetric structure consisting of a thin fine porous structure selective barrier and sub-structure of the porous layer is thicker. With the presence of increasing concentrations of poly ethylene glycol, a membrane pore formed more dense. The composition of membrane showing optimal performance are 23% CA, 5% PEG, and 25 second evaporation time with flux 16,741 L.mˉ².h-1, NTU rejection 89%, TDS rejection 80%, and Ca rejection 83%.

PEMURNIAN BIOETANOL MENGGUNAKAN PROSES ADSORBSI DAN DISTILASI ADSORBSI DENGAN ADSORBENT ZEOLIT Dewi Novitasari; Djati Kusumaningrum; Tutuk Djoko Kusworo
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 1, Nomor 1, Tahun 2012
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Bioethanol is an alcohol substance which can be obtained by biomass fermentation process bymeans of Saccharomyces Cereviceae help. Adsorption is a separation process where thecomponents of a fluid phase moves to the absorbing surface of the solid (adsorbent). This researchaims to examine the process of bioethanol purificationusing adsorption and distillation process bythe influence of variations of the variables. In the distillation process produces ethanol conyentthat is not too high, so it needs to be atudied a process that can increase the purity of bioethanolwith distillation adsorption process. Bioethanol purification process using zeolite as adsorbentwith 4 variables change in the adsorption process, namely: the type of zeolite, stirring time,residence time, and heavy of zeolite. Whereas ondistillation adsorption process using 4 variableschange, namely: the type of zeolite, temperaturem weight of zeolite, and processing time. From theresults most effective process for ethanol purification is distillation adsorbtion process with zeolite4A adsorbent weighing 100 grams, the process temperature 78oC, processing time 50 minutes.Levels of ethanol produced was 98,42%.

PENINGKATAN KINERJA MEMBRAN SELULOSA ASETAT UNTUK PENGOLAHAN AIR PAYAU DENGAN MODIFIKASI PENAMBAHAN ADITIF DAN PEMANASAN Joko Supriyadi; Dhias Cahya Hakika; Tutuk D. Kusworo
JURNAL TEKNOLOGI KIMIA DAN INDUSTRI Volume 2, Nomor 3, Tahun 2013
Publisher : Jurusan Teknik Kimia, Fakultas Teknik, Universitas Diponegoro,

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Membrane is an alternative technology to the water treatment filtration principle that is being widely developed. A common type of polymer used in the manufacture of membranes are cellulose acetate. Sometimes aditive addition used to improve the morphology structure of membrane. The purpose of this research is to make an asymmetric membrane using cellulose acetate polymer additives as well as assess the effect of heating on the structure and morphology and performance of cellulose acetate membranes in brackish water treatment. Research making of cellulose acetate membranes for brackish water treatment is done with the variation of PEG concentration of 1, 3, and 5% by weight and the temperature and time of annealing at 600C and 700C for 5, 10, and 15 seconds. Membrane characterization consists of calculation membrane flux and rejection with brackish water as a feed, SEM, and FTIR analysis. From the research it can concluded that asymmetric cellulose acetate membrane can made by dry/wet phase inversion method. The more added concentration of PEG, the larger pore of membrane. Meanwhile the higher temperature and the longer time of annealing treatment, the skin layer of membrane become denser. Membrane with the composition of 18% cellulose acetate, 5% PEG, 1% distilled water, with heat treatment at temperature of 700C for 15 seconds is obtained optimal performance: flux 6.52 L.M-2.h-1.bar-1, 71% of TDS rejection, 63.75% of turbidity rejection, 52.9% rejection of Ca2+, and 41.9% rejection of Mg2+.

EDUKASI TEKNOLOGI MEMBRAN UNTUK PENYEDIAAN AIR BERSIH DI KECAMATAN SEMARANG SELATAN -JAWA TENGAH Tutuk Djoko Kusworo; Heru susanto; Nita Aryanti; Nur Rokhati; I Nyoman Widiasa
Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi Vol 2, No 3 (2020)
Publisher : Fakultas Teknik Universitas Diponegoro

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Air merupakan kebutuhan dasar bagi manusia, kebutuhan akan air bersih terus meningkat seiring dengan pertumbuhan manusia. Jumlah air di bumi cenderung tetap, namun kualitas air terus menurun akibat pencemaran. Oleh sebab itu perlu adanya upaya pengolahan air menjadi air bersih sebelum di konsumsi. Semarang selatan merupakan sebuah kecamatan di Kota Semarang yang memiliki posisi strategis karena dekat dengan kota. Letak daerah yang berada pada daerah padat penduduk mengakibatkan sulitnya akses air bersih. Air yang diambil dari air sumur memiliki kualitas yang kurang bagus dimana air yang dihasilkan sedikit keruh dan berbauh amis. Selama ini warga berinisiatif menggunakan tawas sebagai bahan untuk menjernihkan air, namun residu tawas dalam air menyebabkan gangguan kesehatan pada tubuh. Oleh sebab itu, pengolahan menggunakan membran diterapkan untuk mengolah air tersebut menjadi lebih bersih. Teknologi membran tidak membutuhkan bahan kimia tambahan serta biaya operasi yang cukup murah. Kegiatan penyuluhan teknologi membran untuk mengolah air bersih telah dilakukan di Kelurahan Bulustalan Rt 02 RW 03 Kecamatan Semarang Selatan. Sebagai luaran dan juga hasil dari pengabdian ini, dibuatlah makalah/modul pelatihan perancangan filtrasi membran skala rumah tangga untuk mengolah air sumur tercemar menjadi air bersih yang layak konsumsi..

Pengaruh Metode Sulfonasi dan Penambahan Pengisi pada Membran Direct Metanol Fuel Cell Muhammad Fahmi Hakim; Tutuk Djoko Kusworo
JRST (Jurnal Riset Sains dan Teknologi) Volume 2 No. 2 September 2018: JRST
Publisher : Universitas Muhammadiyah Purwokerto

Penggunaan polieter-eter keton (PEEK) sebagai membran pengganti nafion pada aplikasi direct methanol fuel cell (DMFC) menjadi penelitian yang terus dikembangkan, Penyempurnaan PEEK menuju karakteristik nafion juga terus dilakukan dengan berbagai metode, baik itu dengan penambahan pengisi maupun pengembangan metode baru dalam proses pembuatan membran PEEK. Methanol crossover dan rendahnya nilai konduktifitas menjadi salah satu kelemahan membran PEEK yang masih perlu di selesaikan dengan cara yang solutif. Tujuan percobaan ini adalah melakukan pengembangan metode pembuatan membran serta menambahkan bahan pengisi untuk memperbaiki karakteristik membran PEEK. Dengan metode A yaitu penambahan pengisi siklodekstrin 10% sebelum proses sulfonasi, metode B yaitu penambahan pengisi siklodekstrin dan silika dilakukan setelah proses sulfonasi pada suhu dan waktu tetap 700C selama 4 jam, hasil karakteristik terbaik diantara dua metode tersebut kemudian ditambahakan pengisi silika untuk meningkatkan sifat hidrofilik membran. Hasil percobaan menunjukkan hasil terbaik pada membran sPEEK-siklodekstrin-silika 10% dengan metode A, penambahan pengisi dilakukan sebelum sulfonasi, dengan nilai swelling degree 140% dan hasil analisa FTIR gugus sulfonat pada membran sPEEK-siklodekstrin-silika 10% yaitu terdapat pada rentang panjang gelombang 1153-1155 cm-1 dan 1217 cm-1 (vibrasi stretching simmetrik dan assimetrik O=S=O).

Synthesis, Characterization, and Study of Proton Exchange Polymer Membrane Properties of Sulfonated Copolymer Eugenol-diallyl Phthalate Ngadiwiyana Ngadiwiyana; Nor Basid Adiwibawa Prasetya; Gunawan Gunawan; Tutuk Djoko Kusworo; Heru Susanto
Indonesian Journal of Chemistry Vol 21, No 1 (2021)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.55353

Synthesis biopolymer of sulfonated copolymer eugenol-diallyl phthalate (PEGDAF), its characterization, and study of proton exchange polymer membrane properties had been done. This synthesis was conducted by eugenol and diallyl phthalate reaction to form PEGDAF, which is sulfonated using sulfuric acid. In addition, the functional groups of the PEGDAF and its sulfonated form were analyzed using FT-IR. Furthermore, the polymer properties were determined by measuring values of sulfonation degree, cation exchange capacity, proton conductivity, and water uptake. FT-IR spectra showed that the vinyl group had been added to the process of PEGDAF formation, while spectra deconvolution was used to confirm the occurrence of sulfonation reaction. The sulfonation of PEGDAF in 2 h optimum reaction time produces a black solid with a melting point of 133 °C in 16.55% yield. The highest proton conductivity, cation exchange capacity (CEC), and water uptake were 8.334 × 10–6 S cm–1, 0.44 meq/g, and 73.0%, respectively.

Optimization for Production Tert-Butyl Oleyl Glycoside Nonioic Surfactant Using Response Surface Methodology Harsa Pawignya; Tutuk Djoko Kusworo; Bambang Pramudono
ASEAN Journal of Chemical Engineering Vol 18, No 2 (2018)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

The development of surfactant production process strongly influenced by the potential use of raw materials and products that are environmentally friendly. For raw materials such as surfactants are carbohydrate-based material utilization example, glucose, which is reacted with tert-butanol, to form tert-butyl glycoside (TBG), then TBG can be esterified with oleic acid forming surfactant tert-butyl oleyl glycoside (TBOG). This study aims to obtain the optimum conditions TBOG production process of esterification reactions TBG and oleic acid catalyst the para toluene sulfonic acid using response surface method to reach optimum yield TBOG. The independent variable used is the mole ratio of TBG with oleic acid, percent of the catalyst and a temperature. Optimization results obtained optimum conditions of mole ratios of 1: 4.096; 2.33 percent of the catalyst and the temperature of 96.04 °C with a TBOG yield of 92.46%, with a TBOG content of 91.72 %. Based on the HLB value of the surfactant TBOG is 3.87, then these surfactants can be used as an emulsifier of water-in-oil.

Study of Polymeric Membranes Potential for Eugenol Purification from Crude Clove leaf Oil Tutuk Djoko Kusworo; Danny Soetrisnanto; Widayat Widayat; Budiyono Budiyono; Dani Puji Utomo
ASEAN Journal of Chemical Engineering Vol 18, No 2 (2018)
Publisher : Department of Chemical Engineering, Universitas Gadjah Mada

Clove oil is an agricultural commodity with economic value. This essential oil can be obtained from flowers, stems, and leaves of clove plants. The quality of clove oil can be evaluated from eugenol levels in oil. An increase in eugenol levels from 70% to 98% can increase oil prices by up to 3 times. Oil obtained from clove leaves has a low eugenol content of 60-70%, therefore the purification is needed to improve the quality of oil. Membrane based separation for eugenol purification was suggested in this paper as new concept in essential oils purification processes. This study aimed to explore the suitable polymer as membrane material for eugenol purification. PES, PA, CA and PI were used in this study, where the membranes were prepared via NIPS technique using manual casting knife to form flat sheet membranes. The membranes were immersed in eugenol to evaluate the solubility. The insoluble membrane was used for purification performance test in membrane filtration cell. The results show that PES and PA membranes were completely dissolved in eugenol in less than 1 minute, while PI and CA membranes were insoluble in eugenol. However, the PI membrane has much lower solvent permeability than CA membrane. The thermal annealed PES membrane for 3 h at 180°C dissolved in eugenol in 30 minutes for complete dissolution. It is concluded that PI and CA membranes can be used as membrane material for eugenol purification but CA more favorable, while PES membrane has a potential for similar purposes after being thermal annealed. However, these findings can offer an important reference for the application of polymeric membranes for clove oil purification through an effective and efficient process.

Co-Authors . Widayat A Abdullah Ahmad Fauzi Ismail Ahmad Fauzi Ismail Ahmad Fauzi Ismail Ahmad Fauzi Ismail Ahmad Fauzi Ismail Ahmad Fauzi Ismail Ahmad Fauzi Ismail Ahmad Mustafa Amin, N A. Saidina Anansya Putri Intan Andri Cahyo Kumoro Andri Cahyo Kumoro Annizah Rahmatya Gerhana Aprian Indra Wibowo Ardian Dwi Yudhistira Atyaforsa Atyaforsa Azeman Mustafa Azeman Mustafa Azeman Mustafa Azizah, Dita Aulia B Budiyono Bambang Pramudono Bambang Rianto Bayu Aji Pratama Budiyono Budiyono Dani Puji Utomo Danny Soetrisnanto Desmile Yusufina Dewi Novitasari Dhea Putri Safira Dhias Cahya Hakika Dita Aulia Azizah Djati Kusumaningrum E. Sofiana Edi Untoro Eva Sofiana Fajar Budi Iswanto Ganang Dwi Harjanto Gita Permana Putra Gunawan Gunawan H Hadiyanto Hakim, Muhammad Fahmi Hanifah Angga Putra Harsa Pawignya Harsa Pawignya Harsa Pawignya Heru Susanto I Nyoman Widiasa I Nyoman Widiasa Iwan Ratman Joko Supriyadi Kang Li Kurniawan, Tonni Agustiono Kusuma, Maria Asel Pranoto Laksono, Satrio Dwi Mafazan, Rafi Maria Octoviane Dyan Muhammad Fahmi Hakim Ngadiwiyana M.Si. S.Si. Nita Aryanti Nor Basid Adiwibawa Prasetya Nur Rokhati Puspa Ratu Puspa, Meitri Bella Sagala, Feni Mutiara Lasniroha Seno Johari Seno Johari Siswo Sumardiono Slamet Priyanto Songip, A R Sunarso . U. N. A. Rochyani Ulfah Nurul Aulia Rochyani Utomo, Dani Puji Veda, Adalia

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