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JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya
Published by Universitas Negeri Malang
ISSN : 25496565     EISSN : 25496573     DOI : 10.17966
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
JC-T (Journal Cis-Trans) : jurnal kimia dan terapannya is published by Universitas Negeri Malang, Faculty of Mathematics and Science, Chemistry Department.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 5 Documents
 1 
Search results for , issue "vol. 3 no. 2 (2019)" : 5 Documents clear
Pirolisis Sampah Plastik Jenis Polipropilena (PP) menjadi Bahan Bakar Cair-Premium-like Anisya Putri Islami; Sutrisno; Heriyanti
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 3 No. 2 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v3i22019p001

Abstract

The handling of plastic waste is still an environmental problem that requires attention. The conversionof plastic waste into liquid fuel is one of the solutions that are quite interesting to researchers. The purpose of this research was to convert polypropylene (PP) plastic waste into liquid fuel, premium-like, through the pyrolysis process. PP type plastic waste was pyrolyzed using a batch reactor equipped with a condenser. The liquid fuel yield obtained from 8 Kg of plastic is 63.375 % with a pyrolysis maximum temperature of 330 °C. The GC-MS analysis results show that the liquid fuel obtained still has a long carbon chain, namely C7-C54 with the main fraction is hydrocarbons with C11-C20. The calorific value of liquid fuel is 46,199 MJ / kg and the density value of 0.726 g/mL.
Fraksi Aktivitas Produk dan Teoritis bagi 192Ir Sebagai Sumber Radiasi Mikro-Kapsul Brakiterapi Sriyono; Moch. Subechi; Anung Pujiyanto; Hambali; Abidin
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 3 No. 2 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v3i22019p007

Abstract

Brachytherapy is a type of radiotherapy used to treat prostate, cervical, breast and other cancers. As a radiation source, iridium-192 radioisotope is packaged in micro-capsules of 316L stainless steel with an inner diameter of 0.6 mm; an outer diameter of 1.2 mm and a length of 4.5 mm known as a high dose rate brachytherapy. Iridium-192 is a beta transmitter radioisotope with energies of 530 - 670 keV and also emits gamma radiation (γ) at average energy of 370 keV with a half-life (t½) of 73.83 days. The iridium-192 was produced from irradiation of the natural iridium wire target in nuclear reactor. The aim of this study is to determine the maximum irradiation time in order to obtain Ir-192 radioactivity in the amount of 10 Ci which meets the requirements for high dose rate brachytherapy. The irradiation of2 pieces of 99.9% natural iridium wire has been carried out in the G.A. Siwabessy reactor for ± 4 months with a 1.2 x 1014 n/cm2/second neutron flux. 
Membran Padat Kitosan-Silika-PEG sebagai Membran Pemisah Ion Logam Bivalen dan Rhodamin B pada Limbah Cair Industri Tekstil F. Widhi Mahatmanti; E. Kusumastuti; W. D. P. Rengga
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 3 No. 2 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v3i22019p012

Abstract

The use of membrane on separation has been widely studied. In this study, the Chitosan-silicapolyethylene glycol (Ch/Si/P) solid membrane is prepared and performed adsorption test for bivalent metal ions, including Pb(II), Cu(II), and Cd(II), and Rhodamine B dye in textile waste water. The Ch/Si/P composite membrane is made by mixing of chitosan, silica (extracted from ash hulk) and polyethylene glycol with ratio 1: 0.8: 0.5 (w/w). The performance of membrane is carried out using dead end method. The result shows that membrane has a heteregenous and very tight structure. On the other hand, commercial membrane shows a fibrous structure. The rejection test shows that the selectivity of Ch/Si/P solid membrane increases from Cu(II)> Cd(II)> Pb(II)> Rhodamine B. In comparison, the commercial membrane shows the selectivity in the sequence of Rhodamine B > Pb(II) > Cd(II) > Cu(II). It is clearly observed that Ch/Si/P solid membrane for bivalen metal ions is better than commercially available, and it indicates that functional group spread on the surface acts as a binding site.
Dekomposisi Termal Pirolisis terhadap Rendemen dan Komposisi Senyawa Kimia dalam Asap Cair Kulit Buah Kakao Mohammad Wijaya; Muhammad Wiharto; Army Auliah
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 3 No. 2 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v3i22019p018

Abstract

Cocoa plants are obtained from existing cocoa plantations in Enrekang Regency, South Sulawesi. Where cacao fruit produces cocoa pods that are discarded, scattered and black in colour for a long time will undergo a process of decay, even though it has considerable potential. The results of cocoa processing produce cocoa waste. with the use of pyrolysis technology. analysis of lignin content of cocoa pods from Enrekang Regency was 45.61%, cellulose was 37.61%, hemicellulose was 6.40%, and other was 10.38%. The result of this combustion produced liquid smoke of cocoa pods into distillates, charcoal. In this study, pyrolysis temperature 112-512 ° C was used. The yield of liquid smoke of cocoa pods in Enrekang Regency at a pyrolysis temperature of 114 °C was 8.04% with a time of 88 minutes, and at pyrolysis temperature 214 °C at 28.62% with time for 40 minutes, then at pyrolysis temperature 314 °C at 27.65% with time for 83 minutes, and pyrolysis temperature 414▫ C at 25.08% with time over 45 minutes, finally the pyrolysis temperature of 514 °C was 8.04% with a time of 88 minutes.
Pembuatan Katalis CuO-ZnO dengan Penyangga gamma-Al2O3 untuk Transesterifikasi Minyak Biji Kapuk (Ceiba Pentandra L.) Wahyu Dwi Prasetiyo; Angga Kafidhu; Nyoman Puspa Asri
JC-T (Journal Cis-Trans) : Jurnal Kimia dan Terapannya Vol. 3 No. 2 (2019)
Publisher : Universitas Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17977/um0260v3i22019p025

Abstract

Biodiesel is a promising energy alternative to substitute fossil fuels. Another reason is the productionprocess using a homogeneous catalyst that has many disadvantages. Raw materials using palm oils which is expensive, also compete with the food industry. Heterogeneous catalyst substitution of homogeneous catalysts and using kapok seed oil as raw material is a promising strategy for mass biodiesel production. This research focuses on developing heterogeneous catalyst CuO-ZnO buffered γ-Al2O3 for transesterification of kapok seed oil. We concern about the effect of calcination temperature and CuO loading. Catalyst synthesis using the sol-gel method. Catalyst characterization by X-ray diffraction (XRD) method, scanning electron microscope-EDX (SEM-EDX) and Brunnauer-Emmet Teller (BET). The catalyst activity test was applied to the transesterification of kapok seed oil with methanol in glass type batch reactor. CuO-ZnO/γ-Al2O3 was successfully synthesized quite well and potentially could be used as heterogeneous catalyst from kapok seed oil.

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