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All Journal Jurnal Ilmiah Pangabdhi Journal Of Chemical Process Engineering (JCPE) Jurnal Teknik Kimia dan Lingkungan

Yuni Kurniati

Departemen Teknik Kimia, Unversitas Internasional Semen Indonesia (UISI), Kompleks PT. Semen Indonesia (Persero) Tbk., Jl. Veteran, Gresik, 61122

Author-ID : 3383893

Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Energy Engineering Materials Science & Nanotechnology Social Sciences Other

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Articles

Analisa Tegangan Panas Housing Batang Kendali Reaktor Nuklir Dalam Batas Desain SA403X Anni Rahmat; Yuni Kurniati; Fahmi Alfa Muslimu
Journal of Chemical Process Engineering Vol 7, No 1 (2022)
Publisher : Universitas Muslim Indonesia

Inti SariBatang kendali reaktor Nuklir adalah satu komponen yang digunakan untuk mengendalikan populasi netron yang beredar dalam teras reaktor nuklir. Untuk memenuhi desain PLTN tipe PWR perlu dibuat sebuah prototype housing batang kendali. Oleh karena itu dalam rangka pembuatan prototype housing batang kendali di perlukan sebuah pradesain yaitu berupa pemodelan integritas housing batang kendali dengan mmenggunakan metode element hingga. Simulasi perpindahan panas dan mekanik pada housing batang kendali reaktor nuklir tipe PWR telah dilakukan menggunakan metode elemen hingga dengan bantuan perangkat lunak Ansys. Simulasi ini dilakukan untuk mengetahui distribusi temperatur selama operasi dan distribusi tegangan vonmisses pada kondisi tegangan panas yang terjadi pada housing batang kendali reaktor dengan tujuan untuk mengetahui integritas strukturnya. Simulasi dilakukan dengan kondisi temperatur operasi 280 ºC dan tekanan 15 MPa dan adanya faktor konveksi pada temperatur 60 ºC serta pada kondisi unsteady state. Dalam simulasi di dapatkan hasil bahwa distribusi temperatur pada housing batang kendali berada pada range 170 ºC – 280 ºC dengan distribusi tegangan Vonmises pada tegangan panas paling rendah adalah 2 MPa dan tegangan Vonmises pada tegangan panas tertinggi sebesar 217 MPa. Dengan menggunakan teori kegagalan tegangan luluh dan distorsi energi maka tegangan panas (dalan vonmises) yang ada pada housing batang kendali masih dalam batas aman karena tegangan yang terjadi masih di bawah tegangan luluh dari bahan SA403X. AbstractControl rod nuclear reactor is one of part for control of netron population in core reactor. To fulfill the requirement PWR type nuclear power plant design, it is necessary to make a prototype control rod housing. Therefore, in order to manufacture a control rod housing prototype, a pre-design is needed, namely modeling the integrity of the control rod housing using the finite element method. Simulation of heat transfer and mechanics on the control rod housing of the PWR type nuclear reactor has been carried out using the finite element method with the help of Ansys software. This simulation was carried out to determine the temperature distribution during operation and the distribution of the Vonmisses stress in thermal stress condition that occurred in the reactor control rod housing in order to determine the structural integrity. Simulationswere carried out with operating temperature conditions of 280 ºC and pressure of 15 MPa and the presence of a convection factor at a temperature of 60 C and in unsteady state conditions. In the simulation, it is found that the temperature distribution in the control rod housing is in the range of 170 ºC – 280 ºC with the lowest Vonmises stress in thermal stress condition distribution is 2 MPa and the highest Vonmises stress is 217 MPa. By using the failure theory of yield stress and energy distortion, the stress on the control rod housing is still within safe limits because the stress that occurs is still below the yield stress of the SA403X material.

Pengembangan Peternakan dan Pemanfaatannya Sebagai Hewan Kurban Desa Mangli Kediri Yuni Kurniati; Anni Rahmat; Roostikasari Nugraheni; Ahmad Dahlan Malik
Jurnal Ilmiah Pangabdhi Vol 8, No 2: Oktober 2022
Publisher : LPPM Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/pangabdhi.v8i2.15828

Puncu District is one of the 26 sub-districts in Kediri Regency. The majority of the residents' livelihoods are farmers, farm laborers, and ranchers. Residents who have livestock as a source of income other than the agricultural business sector, on average, still apply conventional maintenance patterns. Sacrifice is a teaching that is almost unified in terms of the time of its implementation with the pilgrimage. However, it differs in terms of the place and the perpetrators. Sacrifice is usually performed during Eid al-Adha. The celebration of Eid al-Adha is accompanied by the slaughter of sacrificial animals which are carried out simultaneously. There are several problems in the management of livestock, one of which is regarding the management of livestock which is still not good and the livestock production is not optimal. Livestock management in this case is all aspects that affect livestock business, such as: nutrition for animal feed, cage construction, cage sanitation, maintenance methods, vaccination or treatment programs, seed selection, to livestock production and reproduction factors. This activity is carried out in the form of a fostered village with several activities such as counseling, survey of livestock, and distribution of sacrificial animals. With this service activity in the form of a guided village, it is hoped that it will be able to develop management of goat farm management, starting from livestock seeds to the process of selling and distributing livestock as sacrificial animals.

Pengaruh Waktu Terhadap Temperatur Aktivasi dari Kulit Pisang (Musa paradisiaca L.) dalam Pembuatan Katalis Yuni Kurniati; Eka Lutfi Septiani; Okky Putri Prastuti; Victor Purnomo; Sri Sugmah Nur Dewi; Imam Mahmuddin
Jurnal Teknik Kimia dan Lingkungan Vol. 4 No. 1 (2020): April 2020
Publisher : Politeknik Negeri Malang

Banana peels include agricultural waste that contains lignocellulosic components (holocellulose and lignin) and carbohydrate content which is quite high. Banana peel is quite potential to be used as a substrate in producing catalysts. Acid catalyst is one type of catalyst that plays an important role in chemical processes. Chemical activation is the process of breaking the carbon chains of organic compounds by using chemicals. In this way, the activation process is carried out using chemicals (activators) as activating agents. This study aims to study the effect of activation temperature temrhadao from the optimum mass ratio of carbon-KOH in the synthesis process of banana skin charcoal based catalysts so as to produce a catalyst with the most optimal characteristics, and calcination temperature as a physical chemical process in the synthesis of banana skin charcoal based catalysts. The method of making the catalyst is done by calcination to decompose the carbon source into carbon so that the composite is formed according to the temperature that has been varied. After forming carbon-KOH composite, then sulfonation is carried out using concentrated sulfuric acid according to the specified temperature. Activation with KOH at activation temperatures of 300°C, 350°C and 400°C. In this research, the activation process can run optimally at temperatures of 300 °C, 350 °C, and 400 °C which are characterized by the presence of white smoke that has not come out anymore because carbon has reacted with KOH.

Co-Authors Ahmad Dahlan Malik Anni Rahmat Eka Lutfi Septiani Eka Lutfi Septiani Fahmi Alfa Muslimu Imam Mahmuddin Lailatul Qomariyah Okky Putri Prastuti Okky Putri Prastuti Roostikasari Nugraheni Sri Sugmah Nur Dewi Victor Purnomo

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