Claim Missing Document
Check
Articles

Found 19 Documents
Search

Application of Power Plant 4.0: Process Digitalization and Challenges Paryanto, Paryanto; Munyensanga, Patrick; Indrawan, Harry; Cahyo, Nur
ROTASI Vol 22, No 1 (2020): VOLUME 22, NOMOR 1, JANUARI 2020
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (365.015 KB) | DOI: 10.14710/rotasi.22.1.55-61

Abstract

Most power plant process control concern on optimizing the power generation, reduce unplanned shutdown and reduce inventory cost. These challenges can be solved by implementing newly technology called Industry 4.0, which integrates the industrial internet of things (IIoT) and the cyber-enhanced systems as well as cloud computing. This paper presents a prototype system loop as an example of the power generation network to measure the rotating speed, number of turn and the frequency of vibration for the rotating device, humidity & temperature of the physical cooler or heater device within the plant in order to explain the interoperability principle of Industry 4.0 through the implementation of Power Plant 4.0. Base on the test results then used as a basis for identifying the challenges that will arise and the solution to implement Power Plant 4.0 with effectively and efficiently.
UPAYA MENINGKATKAN KUALITAS PEMBELAJARAN PROSES PEMESINAN MAHASISWA D3 TEKNIK MESIN UNY DENGAN MODEL INTEGRATIF LEARNING Paryanto, Paryanto
MAJALAH ILMIAH PEMBELAJARAN No 2 (2010): Jurnal Majalah Ilmiah Pembelajaran Edisi Oktober 2010
Publisher : MAJALAH ILMIAH PEMBELAJARAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.734 KB)

Abstract

The purpose of this study was to determine how far the use of an integrative learning model can improve the quality of the learning machining process learning and to know how far Integrative Learning model can enhance students' learning activities and gains..The study design specified in the form of classroom action research design, which is a collaborative research based on problems that arise in the learning activities in class. This research was conducted at Department of Mechanical Engineering Education, Engineering Faculty, , Yogyakarta State University. This method was applied to D3 students who followed machining process course.Base on the research is cuold be concluded that integratif learning model increased students activeness of 26.7%, and students learning gain of 15.4%.
PEMBUATAN ZAT WARNA ALAMI DARI BIJI KESUMBA DALAM BENTUK KONSENTRAT TINGGI UNTUK PEWARNA MAKANAN Paryanto, Paryanto; Hermiyanto, Hermiyanto; Sanjaya, Simon Dicky Surya
METANA Vol 9, No 02 (2013): Desember 2013
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.517 KB) | DOI: 10.14710/metana.v9i02.7615

Abstract

Abstract The use of synthetic dyes for food in Indonesia reached 88%, this figure is quite alarming considering the health effects of synthetic dyes. So that needs to be made of natural dyes to replace the synthetic dyes. Like the natural pigments bixin of the annatto seed can give a yellow color to red. This study was conducted to determine how to produce natural pigments bixin from annatto seed using extraction process and how the optimum conditions and their application in food.Factors affecting the extraction process among other types of solvents, the size of the material to be extracted, temperature and extraction time, the ratio of material to solvent and stirring speed. Bixin will be degraded when heated and will turn into norbixin when there is excess salt sodium (Na) or potassium (K). Bixin extraction from the seeds annatto using a solvent acetone (CH3COCH3) and sodium hydroxide (NaOH) with variations in concentration, extraction temperature, stirring speed and the ratio of material to solvent. For bixin analysis using UV-Vis spectrophotometer, bixin will produce a maximum absorbance at a wavelength of 470 nm and using FTIR spectrophotometer to determine the group of bixin.The water content in the seeds kesumba is 37% and has a total of 10% bixin content. The optimum conditions of the extraction process of seed kesumba bixin is the type of solventNaOH with a concentration of 0.25 N, extraction temperature of 60 oC, 400 rpm stirring speed and weight of material to solvent ratio 1:20 by weight 2192 mg extract. Keywords: Extraction, bixin, annatto, bixa orellana, sodium hydroxide
Adsorption of Sulphur in Biogas by Activated Carbon Derived From Mangrove Fruits (Rhizopora stylosa) as Solid Residue of Natural Dyes Extraction Paryanto, Paryanto; Wibowo, Wusana Agung; Saputra, Nandika Aji; Setyawati, Rosana Budi
METANA Vol 15, No 2 (2019): Desember 2019
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1187.308 KB) | DOI: 10.14710/metana.v15i2.24424

Abstract

Hydrogen sulfide (H2S) is considered as impurity in biogas. H2S could react to form sulfur dioxide (SO2) and sulfuric acid (H2SO4) during the burning process. The corrosive property of these compounds possibly cause damage the power plant system. Overcoming this problem, activated carbon impregnated with KOH has been proven to work very well in adsorbing H2S. On the other hand, mangrove fruits pulp residue from the natural dyes extraction process has not utilized. Mangrove (Rhizopora stylosa) fruits contain about 50% fixed carbon which is possibly made as activated carbon. The purposes of this research were to determine the adsorption efficiency of H2S in biogas using activated carbon derived from mangrove fruits residue and to determine isotherm equilibrium constants for adsorption. The small scale adsorption devices consist of cooler, flow stabilizer, flow regulator, flow meter and column adsorber. At certain flow rate, biogas was sampled in every 10 minutes and then analyzed using portable H2S gas analyzer.  Temperatures of biogas entered the adsorption column were in the range of 33-34oC. The optimum biogas flow rate was 4 liter per minute (lpm) for 250 grams (16 cm of height) of activated carbon. We found the adsorption efficiency was decreased by time and still reached 79.6% for 50 minutes contact time. Based on coefficient of correlation value (R2) on isotherm model, Langmuir model is more suitable for the H2S adsorption of biogas in this study. We found the Langmuir equilibrium constant k was 0.033 and maximum adsorption capacity (x/m)max was 0.284 mg/mg.
Rancang Bangun Universal Silindrical Grinding Attachment Sistem Modul pada Mesin Bubut Manual Sutopo, Sutopo; Paryanto, Paryanto; Ardian, Aan; Marwanto, Arif
Jurnal Dinamika Vokasional Teknik Mesin Vol 3, No 1 (2018): April
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v3i1.19121

Abstract

The purpose of this research is to design and to analyze the feasibility of universal cylindrical grinding attachment that can be attached to conventional lathes. The research is a quantitative research using ADDIE Reseach and Development (RD) procedure. Data were collected using observation, by means of questionnaire and documentation. Data were analyzed using quantitative-descriptive technique. Results are: (1) the universal cylindrical grinding attachment design is a modified hand-grinding machine with added components to add internal cylindrical grinding functionality; (2) all aspects are in the category of “strongly agree”, so it can be concluded that the design is feasible to use.Tujuan penelitian ini adalah untuk merancang mesin universal cylindrical grinding attachment yang dapat dipasang dan digunakan pada mesin bubut konvensional serta untuk mengetahui kelayakannya. Penelitian ini menggunakan pendekatan penelitian kuantitatif dengan prosedur penelitian Pengembangan/Reseach and Development (RD) model ADDIE. Pengumpulan data menggunakan teknik observasi dan alat pengumpul data menggunakan angket dan dokumentasi. Analisis data menggunakan teknik deskriptif kuantitatif. Hasil penelitian ini adalah: (1) Rancangan mesin universal cylindrical grinding attachment pada mesin bubut manual dibuat dengan memodifikasi mesin gerinda tangan dengan dengan menambahkan beberapa komponen, yaitu: tapper shaft, clamping nuts, slive, shank, nut, bottom holder, dan top holder, sehingga fungsinya bertambah yaitu mampu digunakan untuk menggerinda internal silindris.; (2) rentang penilaian rerata keseluruhan aspek  termasuk dalam kategori sangat setuju, sehingga dapat disimpulkan bahwa mesin ini layak untuk digunakan.
DIFUSI DAN TRANSFER MASSA PADA EKSTRAKSI TANIN DARI BUAH MANGROVE (Rhizophora stylosa) Paryanto, Paryanto; Suri, Azalia Kartika; Saputro, Ilham Roy
Jurnal Rekayasa Bahan Alam dan Energi Berkelanjutan Vol 1, No 2 (2017)
Publisher : Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (808.534 KB) | DOI: 10.21776/ub.rbaet.2017.001.02.01

Abstract

Tannin yang terkandung dalam mangrove diperoleh dengan cara ekstraksi dengan pelarut air. Penelitian ini bertujuan untuk menentukan kecepatan transfer massa (kc), diffusivitas (De) dan konstanta Henry (H). Buah mangrove dipotong kecil-kecil dan dikeringkan kemudian diekstraksi menggunakan pelarut air dengan perbandingan massa bahan dan pelarut 1:10 pada suhu 100oC selama 60 menit, kecepatan pengadukan 500 rpm. Selanjutnya diulangi untuk berbagai variasi jenis pelarut yaitu air, etanol dan n-heksana, variasi kecepatan pengadukan yaitu 300 rpm, 400 rpm dan 500 rpm dan variasi perbandingan massa bahan dan pelarut yaitu adalah 1:5; 1:7; 1:10. Penentuan kadar tanin menggunakan cara titrasi menggunakan KMnO4. Dengan program matlab dicari nilai SSE (sum of squares of error) = Sum ((Cfdata-Cfhitung).^2) dan dicari nilai SSE yang paling minimum. Dengan demikian kondisi operasi yang optimum untuk ekstraksi tanin dari buah mangrove (Rhizophora stylosa) adalah pada kecepatan pengadukan 500 rpm, perbandingan massa bahan terhadap pelarut 1:10 menggunakan pelarut air selama 60 menit dan suhu 100oC ekstraksi dengan yield 0,4326%. Kecepatan ekstraksi tanin dari buah mangrove ditentukan oleh kecepatan difusi dalam padatan dan transfer massa dari permukaan ke pelarut. Dari program matlab diperoleh nilai koefisien transfer massa (kc) sebesar 1,6x10-3 cm/s, Diffusivitas effektif (De) sebesar 6,7x10-4 cm2/s, dan konstanta Henry (H) bernilai 2,6x10-2 dengan SSE bernilai 6,93x10-10.
Meningkatkan Peran Aktif Siswa Dalam Layanan Informasi dengan Pengembangan Pertanyaan Taksonomi Bloom Paryanto, Paryanto; Supriyo, Supriyo; Mugiarso, Heru
Indonesian Journal of Guidance and Counseling: Theory and Application Vol 2 No 3 (2013): September 2013
Publisher : Department of Guidance and Counseling, UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Tujuan penelitian ini yaitu meningkatkan peran aktif siswa dalam layanan informasi dengan pengembangan pertanyaan dari taksonomi Bloom. Jenis penelitian ini adalah penelitian tindakan. Penelitian ini dilaksanakan di kelas VIII B SMP Negeri 1 Ungaran, dengan subyek 25 siswa. Metode pengumpulan data yang digunakan yaitu observasi dan catatan berkala. Teknik analisis data menggunakan analisis data kuantitatif deskriptif persentase dan uji wilcoxon. Hasil penelitian menunjukan peran aktif siswa sebelum pemberian tindakan sebagian besar pada kategori rendah (88%). Selama tindakan, peran aktif siswa meningkat. Pada siklus I  peran aktif siswa sebagian besar pada kategori cukup (80%). Hal ini menunjukan siswa sudah mulai berperan aktif dalam layanan informasi. Pada siklus II peran aktif siswa sebagian besar masih tetap pada kategori cukup (76%). Pada siklus III atau setelah pemberian tindakan, peran aktif siswa sebagian besar pada kategori tinggi (52%). Berdasarkan hasil uji wilcoxon menunjukan Thitung (0) dan Ttabel 5% (89) sehingga Thitung<Ttabel (0<89) yang berarti Ha diterima dan Ho ditolak. Hal tersebut menunjukan peran aktif siswa dalam layanan informasi dapat ditingkatkan dengan pengembangan pertanyaan dari taksonomi Bloom.   The purpose of this research is to improving students active role in the information services with development of the question of Blooms taxonomy. This research is action research. The research was carried out in class VIII B SMP Negeri 1 Ungaran, with 25 student subjects. Data collection methods used were observation, and anecdotal records. Data analysis techniques using quantitative is descriptive percentages analysis and Wilcoxon tests. The results showed the active role of students before giving the action mostly on the low category (88%). During the action, the active role of students increased. In the first cycle, active role of the students in a category largely sufficient (80%). This shows the students have started to play an active role in information services. Active role in the second cycle students remain largely in enough categories (76%). The third cycle or after obtaining action, active role of the students most of the high category (52%). Based on the results of Wilcoxon test showed Tcount (0) and Ttable 5% (89) so Tcount< Ttable (0<89) which  means Ha accepted and Ho rejected. It shows the active role of students in the information service can be improved with the development of the question of Blooms taxonomy.
Hardness Optimization of Heat Treatment Process of Bucket Teeth Excavator Suryo, Sumar Hadi; Adi Widyanto, Susilo; Paryanto, Paryanto; Mansuri, Aly Syariati
Civil Engineering Journal Vol 4, No 2 (2018): February
Publisher : Salehan Institute of Higher Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (866.142 KB) | DOI: 10.28991/cej-030992

Abstract

Excavator is heavy equipment that usually used in construction and mining works. Bucket teeth which are located in the tip of bucket excavator are used for digging works. They are easily damaged by direct contact with the media. One of the material used in bucket teeth excavator is mild carbon steel that has carbon content between 0.33%-0.5%. However, the hardness value of this material is not yet meets the standard of bucket teeth excavator so the optimum hardness value based on its heat treatment should be known. Besides that, its tensile, impact strength, and micro structure in optimum condition will also know. Optimization method was done through Taguchi experimental design with L9 orthogonal and ANOVA (Analysis of Variance). Factors or parameters in this research were heating temperature, holding time, quenching media, and tempering temperature. In this experiment, nine specimens of mild carbon steel were tested by different heating temperatures (850oC, 875oC, 900oC), different holding times (60, 90, and 120 minutes), different quenching medias (oil, water, and salt water), and different tempering temperatures (250oC, 450oC, 650oC). Calculation of Taguchi method and confirmation experiment showed that the optimum parameters of hardness are 875oC heating temperature, 60 minutes holding time, water quenching media, and 250oC tempering temperature. Meanwhile, ANOVA test showed a result that the four factors had an effect on the bucket teeth excavator hardness.
PEMBUATAN ZAT WARNA ALAMI DARI BIJI KESUMBA DALAM BENTUK POWDER UNTUK MENDUKUNG INDUSTRI BATIK DI JAWA TENGAH Paryanto, Paryanto; Purwanto, Agus
Jurnal Litbang Provinsi Jawa Tengah Vol 10, No 2 (2012): Jurnal Litbang Provinsi Jawa Tengah
Publisher : Badan Penelitian dan Pengembangan Provinsi Jawa Tengah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36762/litbangjateng.v10i2.342

Abstract

Synthetic dyes are very practical to use and can lead to striking color on a colored product. This makes the synthetic dyes are often used in the food and beverage, pharmaceutical and textile. But the waste or residues of synthetic dyes can contaminate the environment than the use of synthetic dyes is often abused, such as the use of non synthetic food dyes in food products, thereby causing harm to consumers. Thus the natural dyes began to be reconsidered for use. Drawbacks of natural dyes extracted the natural dye is a liquid so it is not practical for long-term use. Dye is form in a liquid extract is dried into a powder by using a spray dryer. Extract natural dyes from kesumba seeds, mahogany bark and secang wood in this final assignment dried using a spray dryer that has been modified. In a spray dryer using a nozzle extracts scattered granules form small particles, granules - granules of small particles are contacted directly by the hot air that will be formed powder. Spray dryer consists of three main tools nozzle, dryer tank and cyclone. Nozzle is used to extract the dye waste so as to form granules of small particles. Tank made ??of stainless steel dryer that has a diameter of 14 cm, height 94 cm, the maximum volume of 16 liter and 13 liter effective volume. Cyclone acts as a filter / separator between the dye powders with gaseous reaction products has a diameter of 16 cm and 64 cm high. Other support tools in the form of a compressor, blow dryer, and heater. Extract of mahogany and secang dye is obtained by solvent extraction to extract the water while the dye solvent kesumba extracted with 0.25% NaOH solution. Operation of the spray dryer by using semi-continuous system, with a continuous drying process in the tank while the bait into a maximum of 25 ml for each process with the average feed rate 0.13 ml / sec, can work well and can result in dye powder. Feed into the drying temperature to extract mahogany between 90-100 C, whereas for the extract of secang and kesumba between 100-110 C. This dye powder can then be used for dyeing textiles for dyeing cloth is batik.
Chemical Structure of Mangrove Species Rhizophora stylosa as Natural Dyes Paryanto, Paryanto; Pranolo, Sunu Herwi; Susanti, Ari Diana; Dewi, Kristina Ratna; Rossari, Meydiana
METANA Vol 16, No 1 (2020): Juni 2020
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (421.973 KB) | DOI: 10.14710/metana.v16i1.30417

Abstract

Textile dyes are divided into two types, natural dyes and synthetic dyes. Natural dyes commonly made from extraction. Extraction is a process in which one or more components are separated selectively from a liquid or solid mixture, the feed, by means of a liquid immiscible solvent. Extraction can be classified into two group, liquid extraction and solid-liquid extraction. Solvents that are usually used in the extraction of natural dyes are aquades and ethanol. The purpose of this research was to determine the chemical structure, especially tannin in natural dyes from mangrove species Rhizophora stylosa through several samples testing natural dyes. Rhizophora stylosa that have been extracted and evaporated will conducted several tests to obtain chemical structures in natural dyes and yield of tannin in natural dyes. Tests carried out include testing FT-IR, and HPLC. Based on FT-IR analysis, the extraction of Rhizophora stylosa containing tannin indicated by the presence of hydroxyl (O-H) in the area of 3385.36 cm-1, aromatic (C-H) in the area of 1365.53 cm-1, carbonyl (C=O) in the area 1646.36 cm-1, esters (C-O) in the area 1217.30 cm-1. While tannin content obtained from the analysis of HPLC were 6.087 ppm.