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Purwarupa Sistem Kendali Suhu dengan Pengendali PID pada Sistem Pemanas dalam Proses Refluks/Distilasi Pratomo, Teguh Budi; Dharmawan, Andi; Syoufian, Akhmad; Supardi, Tri Wahyu
IJEIS - Indonesian Journal of Electronics and Instrumentation Systems Vol 3, No 1 (2013): IJEIS
Publisher : Indonesian Computer, Electronics, and Instrumentation Support Society (IndoCEISS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (497.607 KB)

Abstract

AbstrakElemen suhu atau panas merupakan salah satu elemen yang penting dalam dunia industri maupun dalam kegiatan riset atau penelitian. Salah satunya adalah teknik refluks yang sering digunakan baik di industri maupun riset pada laboratorium. Elemen suhu merupakan elemen yang paling penting dalam proses refluks maupun distilasi, sehingga sangatlah penting dilakukan pengendalian suhu tersebut. Pada pengendalian yang manual dan konvensional menyebabkan ketidak stabilan suhu dan dimungkinkan terjadi banyak kesalahan (error). Sehingga dampak yang lebih lanjut adalah kualitas produk hasil proses refluks maupun distilasi yang kurang baik. Oleh karena itu, penelitian ini membuat perancangan sistem pengendalian suhu secara otomatis menggunakan kontroler elektronik dengan mode pengendalian sistem tertutup yang tidak hanya memberikan nilai setpoint saja tetapi juga dengan umpan balik sehingga dapat mengontrol atau mengendalikan sistem dengan baik.Tujuan dari penelitian ini adalah merancang bangun/purwarupa dari sistem pengendalian suhu (temperature) pada pemanas (heater) menggunakan kontrol PID  untuk proses refluks/distilasi sehingga terjadi kestabilan suhu yang terjaga dan mengurangi nilai kesalahan (error).Hasil dari penelitian dapat diketahui bahwa sistem pengendalian suhu dapat menggunakan kontrol PID dengan metode Ziegler-Nichols dengan mode osilasi teredam. Penalaan parameter kontrol didapat dari rumus empiris yang disarankan metode Ziegler-Nichols. Kata kunci—suhu, kontrol PID, Ziegler-Nichols Abstract Temperature or heat element is one important element for the industry as well as in research activities. One is a refluxing technique that used both in industry or in research laboratories. Temperature element is the most important element in the process of distillation and reflux, so it is important to control the temperature. In the manual control and conventional causes temperature instability and possible numerous errors. Thus further impact the quality of the product of reflux and distillation processes that are less good.Therefore, this study makes design automatic temperature control system uses an electronic controller with closed system mode which not only provides the setpoint value, but also with the feedback so that they can control system properly.The purpose of this research is to design a prototype of the temperature control system using PID control on the heater for the reflux / distillation resulting temperature stability and reduces the value of the error.The results of the research is that the temperature control system can use PID control with Ziegler-Nichols method with damped oscillation mode. Tuning control parameters obtained from the empirical formula suggested Ziegler-Nichols method. Keywords— temperature, PID control, Ziegler-Nichols
Purwarupa Sistem Kendali Suhu dengan Pengendali PID pada Sistem Pemanas dalam Proses Refluks/Distilasi Pratomo, Teguh Budi; Dharmawan, Andi; Syoufian, Akhmad; Supardi, Tri Wahyu
IJEIS (Indonesian Journal of Electronics and Instrumentation Systems) Vol 3, No 1 (2013): April
Publisher : IndoCEISS in colaboration with Universitas Gadjah Mada, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (497.607 KB) | DOI: 10.22146/ijeis.3836

Abstract

AbstrakElemen suhu atau panas merupakan salah satu elemen yang penting dalam dunia industri maupun dalam kegiatan riset atau penelitian. Salah satunya adalah teknik refluks yang sering digunakan baik di industri maupun riset pada laboratorium. Elemen suhu merupakan elemen yang paling penting dalam proses refluks maupun distilasi, sehingga sangatlah penting dilakukan pengendalian suhu tersebut. Pada pengendalian yang manual dan konvensional menyebabkan ketidak stabilan suhu dan dimungkinkan terjadi banyak kesalahan (error). Sehingga dampak yang lebih lanjut adalah kualitas produk hasil proses refluks maupun distilasi yang kurang baik. Oleh karena itu, penelitian ini membuat perancangan sistem pengendalian suhu secara otomatis menggunakan kontroler elektronik dengan mode pengendalian sistem tertutup yang tidak hanya memberikan nilai setpoint saja tetapi juga dengan umpan balik sehingga dapat mengontrol atau mengendalikan sistem dengan baik.Tujuan dari penelitian ini adalah merancang bangun/purwarupa dari sistem pengendalian suhu (temperature) pada pemanas (heater) menggunakan kontrol PID  untuk proses refluks/distilasi sehingga terjadi kestabilan suhu yang terjaga dan mengurangi nilai kesalahan (error).Hasil dari penelitian dapat diketahui bahwa sistem pengendalian suhu dapat menggunakan kontrol PID dengan metode Ziegler-Nichols dengan mode osilasi teredam. Penalaan parameter kontrol didapat dari rumus empiris yang disarankan metode Ziegler-Nichols. Kata kunci?suhu, kontrol PID, Ziegler-Nichols Abstract Temperature or heat element is one important element for the industry as well as in research activities. One is a refluxing technique that used both in industry or in research laboratories. Temperature element is the most important element in the process of distillation and reflux, so it is important to control the temperature. In the manual control and conventional causes temperature instability and possible numerous errors. Thus further impact the quality of the product of reflux and distillation processes that are less good.Therefore, this study makes design automatic temperature control system uses an electronic controller with closed system mode which not only provides the setpoint value, but also with the feedback so that they can control system properly.The purpose of this research is to design a prototype of the temperature control system using PID control on the heater for the reflux / distillation resulting temperature stability and reduces the value of the error.The results of the research is that the temperature control system can use PID control with Ziegler-Nichols method with damped oscillation mode. Tuning control parameters obtained from the empirical formula suggested Ziegler-Nichols method. Keywords? temperature, PID control, Ziegler-Nichols
Synthesis and Photoactivity of Fe3O4/TiO2-Co as a Magnetically Separable Visible Light Responsive Photocatalyst Kunarti, Eko Sri; Kartini, Indriana; Syoufian, Akhmad; Widyandari, Karolina Martha
Indonesian Journal of Chemistry Vol 18, No 3 (2018)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (462.766 KB) | DOI: 10.22146/ijc.26831

Abstract

Synthesis of magnetic photocatalyst, Fe3O4/TiO2-Co, with characterization and photoactivity examination have been conducted. The synthesis was initiated by preparation of Fe3O4 particles using coprecipitation method. The Fe3O4 particles were then coated with TiO2-Co at a various ratio of Fe3O4:TiO2 and concentration of Co(II) dopant. The Fe3O4/TiO2-Co was characterized by FTIR, XRD, TEM, SEM-EDX, VSM, and SR UV-visible methods. Photoactivity of the Fe3O4/TiO2-Co was carried out using methylene blue as a target molecule in degradation reaction within a batch system. By using optimum conditions, the degradation of methylene blue solution was performed under exposure to UV, visible light and dark condition. Results showed that the Fe3O4/TiO2-Co formation was confirmed by the presence of Fe3O4 and anatase diffraction peaks in the X-ray diffractogram. SR UV-Vis spectra indicated that the Fe3O4/TiO2-Co was responsive to visible light. Band gap energy of the Fe3O4/TiO2-Co with dopant concentration of 1; 5; 10 and 15% were 3.22; 3.12; 3.09 and 2.81 eV, respectively. The methylene blue solution can be well photodegraded at a pH of 10 for 210 min. The Fe3O4/TiO2-Co has the highest ability to methylene blue photodegradation with dopant concentration of 10% gave degradation yield of 80.51 and 95.38% under UV and visible irradiation, respectively.
Synthesis of Iron-Doped Zirconium Titanate as a Potential Visible-Light Responsive Photocatalyst Kurniawan, Rian; Sudiono, Sri; Trisunaryanti, Wega; Syoufian, Akhmad
Indonesian Journal of Chemistry Article in press
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (243.375 KB) | DOI: 10.22146/ijc.38616

Abstract

Synthesis and properties of iron-doped zirconium titanate (ZrTiO4) as a potential visible-light-responsive photocatalyst had been conducted. Various iron dopant concentration and calcination temperature were investigated toward the properties of Fe-doped ZrTiO4. The photocatalyst material was synthesized by sol-gel and impregnation method. Titanium tetraisopropoxide (TTIP) was used as a precursor, embedded on zirconia fine powder. A certain amount of iron (1, 3, 5, 7 and 9 wt.%) was introduced into the photocatalyst system from iron(II) sulfate heptahydrate (FeSO4·7H2O). Photocatalyst with various iron concentration calcined at 500 °C. ZrTiO4 with 5% iron additionally was calcined at 700 and 900 °C. Characterization was performed by using XRD, FT-IR, SR-UV, and SEM-EDX. The presence of iron on the surface of ZrTiO4 was proved by EDX analysis. Fe-doped ZrTiO4 with the lowest bandgap (2.83 eV) is 7% of iron content after calcination at 500 °C.
Synthesis and Characterization of Cu-Doped Zirconium Titanate as A Potential Visible-Light Responsive Photocatalyst Andita, Katarina Rachma; Kurniawan, Rian; Syoufian, Akhmad
Indonesian Journal of Chemistry Vol 19, No 3 (2019)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (14.502 KB) | DOI: 10.22146/ijc.39778

Abstract

Synthesis and characterization of Cu-doped zirconium titanateas a potential visible-light responsive photocatalyst had been conducted. Titanium tetraisopropoxide (TTIP) was used as a precursor of Ti source, reacted to ZrO2 powderand CuSO4·5H2O with various Cu concentrations of 0, 1, 3, 5, 7 and 9% (w/w) by sol-gel method. Zirconium titanate with Cu concentration of 5% was calcined at various temperatures of 500, 700 and 900 °C. All materials were characterized by using XRD, FTIR, SRUV, and SEM-EDX. The characterization proved that the materials were potential as a model of visible-light responsive photocatalyst. Composite with optimum bandgap energy (Eg) was obtained at 5% Cu content after 500 °C with an absorption edge wavelength of 431.93 nm and the bandgap of 2.87 eV.