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All Journal Jurnal Teknik Kimia eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Jurnal Ilmu Sosial dan Ilmu Politik (JISIP) Journal of Research and Technology Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) BUANA SAINS ASEAN Journal of Chemical Engineering AKM: Aksi Kepada Masyarakat JAMAS: Jurnal Abdi Masyarakat Journal of Industrial Process and Chemical Engineering (JOICHE) Faedah: Jurnal Hasil Kegiatan Pengabdian Masyarakat Indonesia Jurnal ATMOSPHERE
Zuhdi Ma’sum
Program Studi Teknik Kimia Fakultas Teknik Universitas Tribhuwana Tunggadewi Malang
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Perbandingan Kerja Antar Bahan Pengisi pada Menara Cooling Tower dengan Sistem Destilasi Uap Ayyam, Khoirul; Sari, Mila Puspita; Ma’sum, Zuhdi; P., Wahyu Diah
eUREKA : Jurnal Penelitian Mahasiswa Teknik Sipil dan Teknik Kimia Vol 2, No 1 (2018)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

ABSTRAK Prinsip kerja Menara Pendingin adalah penukar panas yang berfungsi untuk mengurangi suhu aliran air yang dibawa dari kondensor dengan mengekstraksi panas dari air. Mekanisme penurunan suhu dilakukan dengan kontak langsung dengan udara sehingga sebagian kecil air menguap dan suhu cairan turun. Tujuan penelitian ini adalah untuk mengetahui rasio kerja antara bahan pengisi di Tower Cooling Tower untuk menurunkan suhu air pendingin pada sistem destilasi steam. Pengisi pada pengisi menggunakan pipa PVC dan kaleng bekas. Tes ini dilakukan 5 kali percobaan dan setiap percobaan suhu tercatat sebanyak 5 kali pengukuran. Pengukuran suhu dicatat mulai dari destilat tetes pertama. Ketika proses sirkulasi air di menara Cooling Tower telah berlangsung maka suhu diukur dan dicatat terus menerus setiap 30 menit. Hasilnya menunjukkan bahwa penggunaan filler kaleng lebih efektif pada temperatur 260C hingga 380C. Kata kunci: Menara Pendingin, menara pendingin pengisi, filler PVC, filler kaleng bekas . ABSTRACT Working principle Cooling Tower is a heat exchanger that serves to reduce the temperature of the water flow carried from the condenser by extracting the heat from the water. The temperature drop mechanism is carried out by direct contact with air so that a small portion of the water evaporates and the liquid temperature drops. The purpose of this research is to know the working ratio between filler material in tower Cooling Tower to lower cooling water temperature in steam distillation system. Fillers on filler using PVC pipes and used tins. This test was performed 5 times experiment and each experiment of temperature was recorded as much as 5 times the measurement. Temperature measurements are recorded starting from the first drip destilat. When the process of water circulation in the tower Cooling Tower has lasted then the temperature is measured and recorded continuously every 30 minutes. The results showed that the use of canned filler was more effective at temperatures of 260C up to 380C. Keywords : Cooling Tower, filler cooling tower, filler PVC, filler used tins
VERIFIKASI METODE UJI TOTAL REDUCING SUGAR ICUMSA GS4/3-7 (2011) Lestari, Puji Pangestu; Ma'sum, Zuhdi
eUREKA : Jurnal Penelitian Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

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Abstract

Based on ISO / IEC 17025: 2008 Clause 5.4 states that an accredited laboratory should select the appropriate method, already published in the international standard, regional or national, or reputable technical organizations or from the text or the relevant scientific journals. Laboratories should ensure that can operate standard methods before introducing the tests is to verify the standard method. As an accredited laboratory, the LP-P3GI need to perform verification testing methods to determine whether the total reducing sugar method ICUMSA GS4 / 3-7 (2011) can be applied or applied in LP-P3GI the results are valid and reliable, so that the results of the verification the method can be used as a quality assurance testing. In the verification method, a performance that will be tested is the precision (austerity). Precision is the degree of accuracy the value of some of the results of repeat testing. Precision test can be done by performing intra repeatability and reproducibility. The results of precision test repeatability value CV = 0.75% < 2/3 CV Horwitz = 1.44%, while the intra-precision test reproducibility CV = 1.11%
ANALISIS PERPINDAHAN PANAS DENGAN KONVEKSI BEBAS DAN RADIASI PADA PENUKAR PANAS JENIS PIPA DAN KAWAT Made Arsana, Fathurrahman Malik, Wahyudi Priyono, Ali Alway, Zuhdi Ma’sum
Jurnal Teknik Kimia Vol 7, No 1 (2012): Jurnal Teknik Kimia
Publisher : Program Studi Teknik Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/jurnal_tekkim.v7i1.444

Abstract

This paper aims to analyze the influence of geometry  on the efficiency and capacity of the wire and tube heat exchanger, and present the simulation and experimental validation. Simulations were conducted using finite element method by taking into account free convection and radiation heat transfer. The geometry change was performed to wire diameter and pitch. Calculation was made by dividing heat exchanger into elements. The calculation was performed from the first element. The out temperature of the first element was used for counting the heat flow rate of the next element. This procedure was repeated until the last element. Experimental validation was performed by measuring the surface temperature of the pipe on the specified locations. The validation shows the percentage error of 5%. The highest value of heat exchange capacity per weight is produced at dw = 1mm/pw = 21mm. The highest Qtot and the lowest Tout are produced at dw 1.5/pw 14 mm. From this study, we get that the flow rate of heat produced at dw 1.5 mm/pw 14 mm increases by 4%, and the weight of heat exchangers decreases by 19%, compared to the heat exchanger on the market. Key words: efficiency. finite element, heat capacity, pitch wire, wire diameter.
PENGEMBANGAN DESA WISATA TANAMAN OBAT DALAM RANGKA PEMBERDAYAAN MASYARAKAT PEDESAAN Hariadi Darmawan; Zuhdi Ma’sum; Akhirul Aminulloh
JISIP : Jurnal Ilmu Sosial dan Ilmu Politik Vol 5, No 1 (2016)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (447.57 KB) | DOI: 10.33366/jisip.v5i1.213

Abstract

Abstract: The purpose of this is to support the activities IBW Local Government Pacitan District in terms of democratic economic development prioritizing agro-industrial sector of medicinal plants. Therefore, IBW team Tribhuwana Tunggadewi University and National Institute of Technology in Malang proposed program IBW Tourism Village in the district of Medicinal Plants Nawangan, Pacitan. The final target of the program is the tourist village of medicinal plants by the development of integrated and sustainable agricultural systems are based on self-reliance and environmentally sound. Implementation of the program's first year IBW tourist village in the district of medicinal plants Nawangan Pacitan district is focused on the activities of "on-farm" and pewacanaan tourist village. That is, the focus of the program is directed to engineering cultivation of medicinal plants in the location-based organic farm aims to introduce fundamentally organic cultivation of medicinal plants. The conclusion of the implementation IBW tourist village of medicinal plants in the district Nawangan Pacitan, namely: (1) People in the location IBW tourist village of medicinal plants in the district Nawangan Pacitan, namely the village of Ferns New and Ngromo that are the focus of empowerment this program begin applying cultivation drug organically and conducting business in a simple processing of medicinal plants; (2) The medicinal plant processing business simply needs to be developed with the appropriate technology tools are planned for the next stage. Keywords: tourist village, medicinal plants, kec Nawangan, the production of processed products. Abstrak: Tujuan kegiatan IbW ini adalah menunjang Pemerintah Daerah Kabupaten Pacitan dalam hal pengembangan ekonomi kerakyatan yang memprioritaskan pada sector agroindustri tanaman obat. Oleh karena itu, Tim IbW Universitas Tribhuwana Tunggadewi dan Institut Teknologi Nasional Malang mengusulkan program IbW Desa Wisata Tanaman Obat di Kecamatan Nawangan, Kabupaten Pacitan. Sasaran akhir dari program ini adalah desa wisata tanaman obat dengan pengembangan sistem pertanian terpadu dan berkelanjutan yang berbasis kemandirian dan berwawasan lingkungan. Pelaksanaan tahun pertama program IbW desa wisata tanaman obat di kecamatan Nawangan kabupaten Pacitan ini difokuskan pada kegiatan “on farm” dan pewacanaan desa wisata. Artinya, fokus program diarahkan untuk rekayasa budidaya tanaman obat di lokasi berbasis pertanian organik yang bertujuan mengenalkan secara mendasar budidaya tanaman obat organik. Kesimpulan dari pelaksanaan IbW desa wisata tanaman obat di kecamatan Nawangan kabupaten Pacitan ini, yaitu : (1) Masyarakat di lokasi IbW desa wisata tanaman obat di kecamatan Nawangan kabupaten Pacitan, yaitu desa Pakis Baru dan Ngromo yang menjadi fokus pemberdayaan program ini mulai mengaplikasikan budidaya tanaman obat secara organik dan melaksanakan usaha pengolahan tanaman obat secara sederhana; (2) Usaha pengolahan tanaman obat secara sederhana tersebut perlu dikembangkan dengan adanya alat teknologi tepat guna yang direncanakan dilaksanakan pada tahapan berikutnya. Kata kunci : desa wisata, tanaman obat, kec nawangan, produksi produk olahan.
REAKSI KINETIS PEMECAHAN MINERAL ILMENIT PADA SINTESA TiO2 DENGAN H2SO4 Zuhdi Ma’sum; Taufik Iskandar
BUANA SAINS Vol 9, No 2 (2009)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (215.522 KB) | DOI: 10.33366/bs.v9i2.240

Abstract

Titanium diokside (TiO2) is widely used in chemical industries, especially in ceramics industries. It could be produced by destructing of the ilmenite mineral with sulfuric acid. The design process of destruction needs mathematical modeling which is similar to heterogeneous system that involves both mass transfer and chemical reaction simultaneously. The reaction between the ilmenite mineral and sulfuric acid was conducted in a stirred-batch reactor. The ilmenite mineral and sulfuric acid were mixed in the reactor then it was closed. The reactor was heated and stirred at a certain stirring rate until desired temperature was reached. Samples were withdrawn every 10 minutes. The variables studied were the reaction temperature in the tange of 383 K and 403 K and the rate of stirring in the range of 60 and 125 rpm. There were two proposes models. The first model was a shrinking-core mixed chemical-dynamic regime model. The second model was a shrinking-core chemical regime model. Based on the results, the first model was the suitable model of the two models proposed for describing the kinetics phenomena of the destruction of ilmenite mineral with sulfuric acid. From this model it was obtained that the value of reaction rate constant (kr) could be approached by the Arrhenius equation, as the following; kr = 8,59.1019.e-44578/(RT), in which R is the gas constant and T is the absolute temperature. It was obtained that the value of mass transfer coefficient was not significantly influenced by the rate of stirring
PENGARUH SUHU PENYIMPANAN DAN WAKTU FERMENTASI TERHADAP KUALITAS CUKA APEL MANALAGI Zuhdi Ma’sum
BUANA SAINS Vol 6, No 2 (2006)
Publisher : Universitas Tribhuwana Tunggadewi

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (173.416 KB) | DOI: 10.33366/bs.v6i2.111

Abstract

One of the methods to increase the efficiency of farming product is to the product to become durable product, for example, apple is processed to become vinegar through fermentation. The purpose of this research was to find out whether or not apple fermentation process can produce alcohol with khamir sacharomyces cereviceae, and further fermentation can form vinegar with acetobacter aceti bacteria. In addition, the special purpose of this study was to know the influence of the storage temperature and the fermentation process time on the quality of vinegar production. The results of this research hopefully could increase knowledge about apple processing to become acetic acid. Thus as the constant variable was volume of apple essence, the amount of ammonium sulfate, khamir, acetobacter aceti, time of storage, pH speed of stirrer and temperature of fermentation, where as change of variable was process time. From the research results it was known that the best quality of acetic acid was obteianed at the 62nd hour in the amount of 0.91% (room temperature) and 0.54667% (freezer temperature)
OPTIMASI PROSES DESTILASI UAP ESSENTIAL OIL Zuhdi Ma&#039;sum; Wahyu Diah Proborini
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 2 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i2.654

Abstract

Most of essential oils are produced using simple method steam destillation. The tool used in this reseach were made by a small workshop. This equipment can be used for distillation and condensation. But the best process that can be applied to this equipment is still unknow. The purpose of this study is to obtain the shortest processing time and optimization of production processes. This condition is achieved by decrease the rate of increasing temperature of cooling water. With the achievement of this conditions, the optimization of the essential oil distillation process in oil refining production system can be determined. The method used in this research is to reduce the temperature of the water out of the condenser using cooling tower.The best temperature decrease is obtained at A process with the difference in temperature of the cooling water at 1.5oC, 2.5oC, 3.5oC, 5.5oC. The decrease of increasing temperature of the cooling water can increase the capacity process through the addition of process. Optimization of processing time in 12 hours resulted repetition of the process at 4 hour by 3 times. With the cooling tower can reduce the rate of increase temperature in cooling water.Yield of Essential oils increase 29%.
PENGARUH KONSENTRASI GULA LARUTAN MOLASES TERHADAP KADAR ETANOL PADA PROSES FERMENTASI Agus Rochani; Susy Yuniningsih; Zuhdi Ma&#039;sum
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 1, No 1 (2016)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v1i1.645

Abstract

The imbalance between supply and fuel needs led to the impact of the energy crisis. Bioethanol is an alternative fuel that has the potential to replace fossil fuels. Bioethanol is the result of fermentation of biomass ethanol with the aid of microorganisms. This study aims to determine the ethanol content is influenced by the concentration of the solution of sugar molasses, as well as determine how much sugar concentration in the most optimal fermentation of molasses (molasses). The fermentation process varied with the concentration of 12%, 14%, 16%, 18%, 19% and 20%. To determine levels of ethanol produced, then the measurement or test the ethanol content in each variable concentrations of sugar substrate by means of pycnometer. The results showed that the concentration of the solution of sugar molasses effect on levels of ethanol produced. The highest ethanol content obtained at a concentration of 18% sugar, amounting to 13.85%. Lowest ethanol content obtained at a concentration of 12% sugar, namely 4.56%, while the sugar concentration of 14% - 18% ethanol continues to increase in a row to 6.4%, 12%, and 13.85%. Cereviseae Saccharomyces fermentation activity declined at a concentration of 19% sugar and 20%, ethanol is converted decreased to 11.82% and 8.07%.
EKSPERIMEN DAN MODEL EKSTRAKSI MINYAK ATSIRI DENGAN BAHAN CYMBOPOGON SP. MENGGUNAKAN HIDROSTEAM DISTILLATION Zuhdi Ma&#039;sum; Pramono Sasongko
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 2, No 1 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v2i1.665

Abstract

This work has as objective to modeled time extraction and yield of the citronella oil extraction processes from stems by hydrosteam distillation. The process variables evaluated in this study were extraction time, and material weight. The yield is calculated from the relation between mass essential oil obtained and the raw material mass used in the extraction and the quantitative and qualitative analyses of the oils were performed by capillary GC/MS. The experimental condition for the maximum yield, 0.36 %, is the following one: extraction time, 4 h, natural plant. The modeling of these results is proposed from the description of the mass transfer from a single plate particle. Yield curves for all studied conditions were fairly well fitted using one adjustable parameter of the model and the experimental monitoring of oil composition as function of extraction time was realized in laboratory steam distillation apparatus and compared with industrial scale results.
OPTIMASI PROSES DIFUSI UAP PADA DAUN SEREH DAPUR Zuhdi Ma&#039;sum; Wahyu Diah Proborini
Reka Buana : Jurnal Ilmiah Teknik Sipil dan Teknik Kimia Vol 2, No 2 (2017)
Publisher : Universitas Tribhuwana Tunggadewi Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33366/rekabuana.v2i2.727

Abstract

This study aims to produce a model of household scale industries which are used in urban areas to pay attention to the efficient use of water resources, energy and land. Results of essential oils stored to determine the stability of the composition of the product citral essential oils are processed using steam distillation. Industrial model made from raw material supply of land is limited, the process is effective and efficient use of water and energy to economic analysis. The raw material used is the lemongrass or commonly called Lemongrass kitchen. Kitchen lemongrass plant is observed from planting to harvest right. The area required to sustain the process of production. Methods of planting lemongrass kitchen done naturally without any special treatment such as fertilization and pest control. Tools and processes developed is steam distillation. Engineering tools in order to get the process done the shortest and the least use of energy. A short process to obtain due to optimum cooling rate. Optimum cooling will reduce the processing time and minimize water usage. From the results of research in getting to the land area is 4 x 6m2 can generate lemongrass leaves the kitchen as much as 40kg. Essential oils are produced ± 120ml per day in 4 times long process with total process time 12h. The use of fuel by 12kg LPG per day with a volume of water use remain. With this process, this study managed to shorten the process that the effect of reducing energy and minimize water usage. The advantage that can be gained per day ± Rp310.000. In storage until 23bulan, citral percentage did not change with the level of 28% - 45%.
Co-Authors Abd. Rohman Abrina Anggraini , Sinar Perbawani Agnes Quartina Pudjiastuti Agus Rochani Akhirul Aminulloh Anggraini, Sinar Perbawani Abrina Apria Fransiska Ariyanti, Rina Ayu Chandra Kartika Fitri Ayyam, Khoirul Ceme, Grogorius Chevy Renova Donny Satria Bhuana Erlinda Ningsih, Erlinda Fikka Kartika Widyastuti Fransiska, Apria Grogorius Ceme Hariadi Darmawan, Hariadi Huda, Istaniyah Iskandar, Taufik kaha, adrianus putra adi Lestari, Puji Pangestu Lorenza, Karolina Maret Mahfud Mahfud Martha Susana Rischa Mila Puspita Sari, Mila Puspita Naes, Ivoni Sallyra nuna, agustinus jama Nur Ida Iriani Nur Ida Iriani P., Wahyu Diah Pramono Sasongko Ratna, Kornelia Simbolon, Devi Veronika Susy Yuniningsih Tirta Yoga Variyana, Yeni Wahyu Diah Proborini Yasin Wijaya Yustia Wulandari Mirzayanti Zain Lillahulhaq