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All Journal Jurnal Periodic Jurusan Kimia UNP Pelita Eksakta International Journal of Innovation in Mechanical Engineering and Advanced Materials Jurnal Pengabdian Pada Masyarakat
Umar Kalmar Nizar
Universitas Negeri Padang
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Pengaruh Penambahan Titanium Dioksida (TiO2) terhadap Sifat Konduktor dari Polianilin (PANI) Safira Wulandari; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117166

Abstract

This study aims to determine the effect of the addition of TiO2 dopant on the electrical conductivity of polyaniline synthesis using the photopolymerization method and characterization with Fourier Transform Infrared (FTIR) and Diffuse Reflectance UV-Vis (DR UV-Vis). Synthesis of polyaniline was carried out by mixing aniline monomer with Ethylene Glycole Dimetacrylate (EGDMA) as a crosslinker and Dimethoxy Phenylacetophenone (DMPP) as an initiator, and the addition of TiO2 dopant as much as 0.006 g, 0.011 g, 0.016 g, 0.021 g and 0.026 g. The obtained PANI and PANI/ TiO2 were measured for electrical conductivity using the Four Point Probe (FPP), it was found that the optimal electrical conductivity value was 12.60 × 10-3 S/cm which was owned by PANI added with TiO2 of 0.006 g.
Analisis Proksimat Karbon Batang Jagung (Zea mays) di Kecamatan 2 x 11 Kayu Tanam sebagai Sumber Material Maju Risya Yelfika; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117066

Abstract

Carbon material is a material obtained from carbonized organic materials such as charcoal and biomass waste that is processed into carbon. Corn stalks contain cellulose, hemicellulose, and lignin which have the potential to be used as carbon sources for advanced materials. This study aims to analyze carbon from corn stalks. Corn stalks were carbonized with temperature variations of 250˚C, 300˚C, 350˚C, 400˚C, and 450˚C. The carbon of corn stalks formed was carried out by proximate analysis by testing the vapor content, ash content, and bound carbon. The results of the analysis show that the higher the carbonization temperature, the lower the vapor content and the bound carbon content, while the higher the ash content. In this study, the results of the carbon analysis of corn stalks in  Kecamatan 2 x 11 Kayu Tanam according to SNI 06-3730-1995 were samples at a carbonization temperature of 250˚C.
Potensi Daun Serai (Cympogon citratus) sebagai Sumber Karbon untuk Material Maju Syilla Nurvidayah; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117110

Abstract

The purpose of this study was to determine the optimal carbonization temperature of lemongrass leaves to obtain an environmentally friendly, economical and quality product that could potentially be a carbon source for advanced materials. Lemongrass leaf carbon is synthesized by the carbonization process. The method in the formation of lemongrass leaf carbon is calcination using a furnace at a temperature variation of 250°C, 300°C and 350°C for 1 hour. Carbon will be tested for ash content, vapor content, and bound carbon content. Carbon quality requirements based on SNI 06-3730-1995. In conclusion, the optimal carbonization temperature is 250°C with an ash content of 18.99%, a vapor content of 2.91% and a bound carbon content of 78.10%.
Potensi Kulit Ubi Kayu (Manihot Esculenta) di Kecamatan Koto Xl Tarusan sebagai Sumber Karbon untuk Material Maju Wini Andriani; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117092

Abstract

The purpose of this research is the optimal carbonization temperature, to obtain economical, environmentally friendly and quality carbon from cassava peel waste. Cassava peel carbon is synthesized through a carbonization process. The method used to manufacture carbon from cassava peel is by calcining it in a furnace at various temperatures of 250℃, 350℃, and 450 for 1 hour. The carbon obtained was tested for ash content, vapor content and bound carbon. In this study, the standard used to determine the characteristics of the carbon produced is the Indonesian National Standard (SNI 06-3730-1995). The results showed that the optimal carbonization temperature for cassava peel carbon was 250℃, where the ash content was 7.14%, the vapor content was 5.32% and the bound carbon was 87.54%. Based on these results, it can be concluded that cassava peel waste can be used as carbon that meets the Indonesian National Standard (SNI 06-3730-1995).
Potensi Kulit Kacang Tanah (Arachis hypogaea) Sebagai Sumber Karbon Untuk Material Maju Rida Rida; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117109

Abstract

Carbon material is one example of the development of advanced materials. Carbon is the result of the decomposition of an organic compound through an imperfect carbonization process. Carbon can be utilized from organic waste materials containing cellulose, hemicellulose, lignin and starch. The composition of peanut shells is 65.7% cellulose, the high content of cellulose in peanut shells makes it a potential carbon source. The method used for the manufacture of peanut shell carbon is calcination at various temperatures of 250 0C, 300 0C, 350 0C and 400 0C. Carbon proximate analysis was carried out by testing the ash content, vapor content and bound carbon content. In this study the standard used is SNI 06-3730-1995. The results of the analysis showed that the ash content increased with increasing calcination temperature, while the vapor content decreased with increasing calcination temperature. The carbon content obtained decreases with increasing calcination temperature. The optimum condition of peanut shell carbon close to SNI 06-3730-1995 was obtained at carbon with a calcination temperature of 250 0C, 5.10% and a vapor content of 7.41% and a bound carbon content of 87.49%.
Potensi Biji Durian(Durio zibethinus) di Kota Padang Sebagai Sumber Karbon untuk Material Maju Oktavia Wulandari; Umar Kalmar Nizar
Jurnal Periodic Jurusan Kimia UNP Vol 12, No 1 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/p.v12i1.117067

Abstract

Indonesia is a maritime country that has a lot of natural resources, but the processing of these resources is still lacking. One of the efforts to develop these natural resources is in the form of advanced materials. The purpose of this research is to analyze and determine the optimal temperature of durian seed carbon. Carbon is synthesized through a calcination process with a temperature variation of 250oC-400oC for 1 hour. The carbon obtained was tested for ash content, vapor content and analysis of bound carbon content. Based on the results of the study which showed that the higher the temperature, the higher the ash content, while the vapor and bound carbon content decreased. The optimal result in this study which is in accordance with SNI-06-3730-1995 is durian seed carbon with a calcination temperature of 250oC.
WATERMELON PEEL EXTRACT AS GREEN CORROSION INHIBITOR FOR ST-37 CARBON STEEL IN SEAWATER Sri Teguh Priharti; Umar Kalmar Nizar; Rita Sundari; Sri Benti Etika; Budhi Oktavia; Ananda Putra; Rini Anggraini
International Journal of Innovation in Mechanical Engineering and Advanced Materials Vol 3, No 3 (2021)
Publisher : Universitas Mercu Buana, Prodi S2 Teknik Mesin

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (529.174 KB) | DOI: 10.22441/ijimeam.v3i3.13759

Abstract

Corrosion engineering has taken great interest in many industries that required high cost management to overcome the serious problems. This work has investigated the role of watermelon peel extract as green inhibitor to protect carbon steel in seawater. This investigation has studied the corrosion rate and inhibition efficiency applying weight loss method.  The laboratory result shows the optimum inhibition efficiency found to be 71.64% at 5% inhibitor concentration in 100 ml seawater at room temperature. The effects of temperature and immersion time on inhibition efficiency have also been examined.  This study has used Arrhenius equation based on activation energy to determine type of adsorption encountered with corrosion process. The result shows a chemical adsorption justified by its high adsorption heat and strengthened by FTIR and UV-Vis examinations. The phytochemical examination of watermelon peel extract gives positive response to flavonoid, alkaloid, and saponin. The finding is useful for many industries encountered with carbon steel corrosion in corrosive medium using green inhibitor.   
Edukasi Pengelolaan Sampah Rumah Tangga untuk Mewujudkan Lingkungan Bersih di Kelurahan Teluk Kabung Tengah Kecamatan Bungus Teluk Kabung Kota Padang Desy Kurniawati; Indang Dewata; Sri Benti Etika; Umar Kalmar Nizar; Suryelita Suryelita; Melindra Mulia; Trisna Kumala Sari; Niza Lian Pernadi
Jurnal Pengabdian Pada Masyarakat Vol 8 No 3 (2023): Jurnal Pengabdian Pada Masyarakat
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30653/jppm.v8i3.420

Abstract

Sampah merupakan salah satu persoalan mendasar terhadap lingkungan di Kelurahan Teluk Kabung Tengah, Kecamatan Bungus Teluk Kabung. Pengelolaan yang tidak tepat terhadap sampah menyebabkan pencemaran terhadap lingkungan terutama jika dibuang begitu saja pada aliran sungai yang bermuara pada pantai, bahkan dapat menyebabkan bencana banjir terhadap area pemukiman. Untuk mengatasi dampak pencemaran lingkungan dari pembuangan sampah perlu adanya solusi, yaitu penyuluhan dan edukasi mengenai bagaimana pengelolaan sampah rumah tangga diantaranya dengan memilah sampah sebelum dibuang dan menerapkan metode 3R (reuse, reduce dan recycle). Melalui sosialisasi, edukasi dan aplikasi pada masyarakat khususnya ibu-ibu Pemberdayaan Kesejahteraan Keluarga (PKK), kegiatan pengabdian ini secara keseluruhan dapat menjadi solusi permasalahan sampah dari hulu. Diantara penerapan metode 3R yang telah diaplikasikan pada masyarakat yaitu dengan melakukan daur ulang sampah organik rumah tangga oleh ibu ibu-ibu PKK menjadi beberapa produk yang bernilai ekonomis, yaitu Eco-enzyme, Pupuk Organik Cair (POC), dan kompos. Dengan diberikannya penyuluhan dan edukasi mengenai pengelolaan sampah rumah tangga pada kegiatan pengabdian pada masyarakat di kelurahan Teluk Kabung Tengah Kecamatan Bungus Teluk Kabung pada akhirnya dapat mendukung tercapainya kondisi lingkungan yang bersih, sehat dan nyaman. Waste is one of the fundamental environmental problems in Teluk Kabung Tengah urban village, Bungus Teluk Kabung sub-district. Improper management of waste causes pollution to the environment, especially if it is simply disposed of in the river that empties into the beach, and can even cause floods to residential areas. To overcome the impact of environmental pollution from waste disposal, a solution is needed, namely counseling and education on how to manage household waste, including sorting waste before disposal and applying the 3R method (reuse, reduce and recycle). Through socialization, education and application to the community, especially mothers of Family Welfare Empowerment (PKK), this community service activity can be a solution to the upstream waste problem. Among the applications of the 3R method that have been applied to the community are recycling household organic waste by PKK mothers into several economically valuable products, namely Eco-enzyme, Liquid Organic Fertilizer (POC), and compost. By providing counseling and education on household waste management in community service activities in Teluk Kabung Tengah urban village, Bungus Teluk Kabung sub-district, it can ultimately support the achievement of clean, healthy and comfortable environmental conditions.
Analisis Proksimat Karbon Bonggol Pisang Kepok (Musa paradisiaca L) di Kecamatan Koto Tangah sebagai Sumber Karbon untuk Material Maju Vionisa Vionisa; Umar Kalmar Nizar
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.117504

Abstract

Actived carbon can be produced from biomass waste containing starch, lignin, cellulose, and hemicellulose as a source for advanced materials. The purpose of this research is to analyze and determine the optimum temperature of the banana hump to obtain high quality, economical, and enviromentally friendly carbon. The method used for the manufacture of carbon from banana humps is by calcining in a furnace with a temperature 250°C-450°C for 1 hour. Proximate analysis of banana hump carbon used SNI 06-3730-1995 was performed by testing ash content, vapor content, and bound carbon. Based on the result obtained, the carbon of banana humpwith a carbonization temperature variation of  250°C is the optimum reaction with an ash content value of 20,26%, a vapor conten of 1,78%, and a bound carbon content of 77,96%.
Pengaruh Jenis Aktivator Terhadap Penyerapan Ion Logam Pb2+Oleh Kulit Buah Matoa (Pometia pinnata) Geita Yulyan Firel; Edi Nasra; Indang Dewata; Umar Kalmar Nizar
Periodic Vol 12, No 2 (2023): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v12i2.117006

Abstract

The effect of activation types on the biosorpsion of pb2+ metal ions by matoa peel (Pometia pinnata) has been done. The purpose of this study was focused on the effect of the type of activator on the biosorpsion of pb2+ metal ions by the matoa peel (Pometia pinnata) with chemical activation to determine the technical and condition of the activator according to the matoa peel which can be used as a Pb2+ ion biosorbent. The method used is the batch method. The variables in this study were the type of activator and were characterized using the FTIR and AAS. The results showed that 0.1 M HCl was the best activator characterized by a decrease in % T of functional groups -OH, -CH and C-O which played an important role in the biosorption process, had the best Pb2+ metal biosorption capacity obtained from the AAS results, namely of 0.6462 mg/g with % biosorption 80.6239%.
Co-Authors Amalia Putri Lubis Ananda Putra Aroma Karmila Budhi Oktavia Delfitri Delfitri Desy Kurniawati Edi Nasra Ellizar ellizar Fajriah Azra Fauzan Yan Hawari Fauzana Gazali Fazhira Hanifah Geita Yulyan Firel Habibur Rahman Dafnaz Hardeli Hardeli Hary Sanjaya Indang Dewata Isnaeni Isnaeni Muhammad Hiknul Ikhsan Mulia, Melindra Nadia Nadia Naka Yura Nesya Febi Utami Niza Lian Pernadi Norma Wahyunita Oktavia Wulandari Rahadian Zainul Rida Rida Rini Anggraini Risya Yelfika Rita Sundari Safira Wulandari Septian Budiman Sri Benti Etika Sri Teguh Priharti Suryelita . Syamsi Aini Syilla Nurvidayah Trisna Kumala Sari Vionisa Vionisa Wini Andriani