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All Journal Buletin Peternakan Eksergi: Chemical Engineering Journal KOLONI Jurnal Pengabdian Pada Masyarakat METHABDI Jurnal Pengabdian Masyarakat dan Riset Pendidikan Journal Of Chemical Process Engineering
Zakiyah Darajat
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Journal : KOLONI

 1 
Pengaruh Suhu dan Ion Logam Terhadap Potensi Senyawa Kompleks Ditiokarbamat Sebagai Zat Aditif Pada Pelumas Ranggina, Dian; Darajat, Zakiyah; Yunus, Muhammad Arham; Nurfiansyah, Nurfiansyah
KOLONI Vol. 1 No. 4 (2022): DESEMBER 2022
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/koloni.v1i4.94

Abstract

The ideal quality of lubricant can be obtained by adding additives. One of the functions of additives in lubricants is to maintain viscosity against temperature changes. Dithiocarbamate complexes with heavy metals have very low solubility in water so that dithiocarbamate compounds have great potential as additives in lubricants. This research was conducted in an effort to determine the effect of temperature (40 oC and 100 oC) on the viscosity of the lubricant and metal ions (Mn2+, Fe3+, Co2+) in the synthesis of dithiocarbamate complex compounds on their potential as additives in lubricants. This compound was synthesized by in situ method and to measure and compare the viscosity of the lubricant before and after the addition of the complex compound as an additive.The results showed that complex compounds from N-ethylisopropylditiocarbamate ligands could be synthesized with metal ions Mn(II), Fe(III) and Co(II). Where is the synthesis of complex compounds obtained yields Mn(II)-N-ethylisopropylditiocarbamate amounted to 49.59%, Fe(III)-N-Ethylisopropyldithiocarbamate of 41.81%,and Co(II)-N-Etilisopropil ditiocarbamate by64.12%.From the results of the characterization of the viscosity test, it can be seen that temperature and metal ions in complex compounds affect their potential effectiveness as additives in lubricants. Of the three complex compounds it is more effective at 100 oC than 40 oC, where metal ions Mn (II) are more effective than Fe(III) and Co (II). Keywords: Lubricants, additives, metal ions, temperature, dithiocarbamate.
Efektivitas Penggunaan Poli Aluminium Klorida (PAC) dan Aluminium Sulfat (Tawas) Dalam Pengolahan Limbah Cair Industri pada Waste Water Treatment Plant (WWTP) PT. KIMA Makassar dengan Metode Koagulasi Menggunakan Jar Test Pampang, Harun; Ole, Maria Assumpta Nogo; Darajat, Zakiyah
KOLONI Vol. 1 No. 4 (2022): DESEMBER 2022
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/koloni.v1i4.280

Abstract

Wastewater in industrial areas has various contents. The levels of pollutant substances in waste water have been regulated in industrial area waste water quality standards stipulated in Government Regulations. One method used to achieve quality standards is a chemical process, namely adding chemicals as coagulants using a jar-test machine. In this study, the coagulation process of liquid waste from PT. Makassar Industrial Area with the addition of polyaluminium chloride (PAC) and aluminum sulfate (alum) which aims to study the effectiveness of using two types of coagulants with variations of 0.02, 0.04, 0.06, and 0.08 grams in 500mL of wastewater. After 1 minute fast stirring and 10 minutes slow stirring then leaving for 10 minutes, the TSS test showed that the addition of alum was able to reduce TSS better than the addition of PAC. The addition of 0.04 grams of alum resulted in an effectiveness of 91.71%, while for PAC the best results were the addition of 0.06 grams of coagulant with an effectiveness of 46.13%. Keywords: coagulation, jar-test, alum, PAC, wastewater treatment
Co-Authors A Mufhida Rezky Amalia Azzahra Hayat Ali Agus Andi Aladin Dian Ranggina Fadhil Dwi Syahputra Fauziah Nur Aisyah, Fauziah Fitria Fitria Fitria Fitria Gunarya Muhammad Rachman Krishna Agung Santosa Maria Assumpta Nogo Ole Muh Fadil Mufli Munira Munira, Munira Nurfiansyah, Nurfiansyah Ole, Maria Assumpta Nogo Pampang, Harun Sabara, Zakir Septiani, Mimin Takdir Syarif Uti Sujatinah Yunus, Muhammad Arham Zuhrotul Fikri Ilma