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All Journal Jurnal Jejaring Matematika dan Sains BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Ilmiah Berkala: Sains dan Terapan Kimia
Karelius Karelius
Program Studi Kimia FMIPA, Universitas Palangka Raya
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Education Energy Engineering Mathematics Physics Other

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Perancangan Filter Penjernih Air Sungai Kahayan Berbasis Pasir Silika Dan Lempung Alam Asal Kalimantan Tengah: Design of Kahayan River Water Treatment Filter Based Silica Sand and Natural Clay of Central Kalimantan Revianti Coenraad; Wiratno; Karelius Karelius
Jurnal Jejaring Matematika dan Sains Vol. 1 No. 2 (2019): Edisi Desember 2019
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.v1i2.213

Abstract

Salah satu cara pengolahan air yang sederhana dan ramah lingkungan adalah melalui proses penyaringan dengan instalasi penyaringan air sederhana (IPAS) menggunakan bahan alam. Bahan alam yang dapat digunakan sebagai filter dalam instalasi penjernihan air sederhana adalah pasir silika dan lempung alam yang diaktivasi. Pengambilan sampel sungai akan dilakukan di DAS (Daerah Aliran Sungai) Kahayan Kalimantan Tengah. Sampling air akan dilakukan pada saat musim kemarau sehingga tidak ada pengaruh pengenceran. Filter pasir silika dan kerikil diperoleh dari toko penjual ikan hias yaitu pasir ukuran halus dan kasar. Filter lempung mangan dapat dibuat dengan menggunakan lempung alam yang perlakukan dengan MnCl2 dan KMnO4. Hasil pengujian menunjukkan filter lempung mangan dan arang aktif mampu menyaring zat-zat berbahaya yang terlarut dalam air, menghilangkan bau dan menjernihkan air sungai kahayan yang keruh. Air sungai kahayan yang sebelum dilakukan penjernihan memiliki nilai pH 5,5, kandungan Fe 2,16 mg/L, total padatan tersuspensi (TSS) 258 mg/L, total padatan terlarut 30 mg/L, kekeruhan 140 NTU dan sangat bau. Setelah dilakukan penjernihan dengan instalasi penjernihan air, penjernihan memiliki nilai pH 6,5, kandungan Fe 0,7 mg/L, total padatan tersuspensi (TSS) 134 mg/L, total padatan terlarut 32 mg/L, kekeruhan 35,3 NTU dan tidak berbau. Hasil penjernihan air ini cukup layak digunanakan sebagai air bersih karena nilai pH, kandungan Fe, TDS, TSS, kekeruhan dan bau sesuai dengan syarat air bersih menurut Permenkes RI No: 416/MENKES/PER/IX/1990.
Evaluasi Prediksi Nilai Higher Heating Value (HHV) Biomassa Berdasarkan Analisis Ultimate: Evaluation of Prediction Higher Heating Value (HHV) of Biomass-Based on Ultimate Analysis Made Dirgantara; Novi Kristian; Karelius Karelius
Jurnal Jejaring Matematika dan Sains Vol. 1 No. 2 (2019): Edisi Desember 2019
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.v1i2.218

Abstract

Biomassa merupakan energi terbarukan yang sangat penting, dimana keberadaannya dapat menggantikan bahan bakar fosil baik padat maupun cair. Sebagai bahan bakar tentu perlu adanya analisis-analisis untuk mengetahui karakteristik dan kualitas biomassa sehingga kita dapat mengklasifikasikan biomassa yang potensial digunakan sebagai bahan bakar. Nilai kalori atau higher heating value (HHV) merupakan sifat terpenting dari suatu bahan bakar. Pada umumnya pengukuran nilai kalori menggunakan bomb calorimeter, akan tetapi pengukuran ini memerlukan waktu dan biaya sehingga tidak efektif jika yang dianalisis dalam jumlah banyak. Dalam makalah ini akan dibahas persamaan untuk memprediksi nilai HHV biomassa berdasarkan analisis ultimate yang di dapatkan dari penelitian sebelumnya. Empat prediksi nilai HHV menggunakan 15 data komposisi kimia biomassa dari penelitian sebelumnya kemudian dibandingkan berdasarkan ketepatan untuk mendapatkan prediksi terbaik. Persamaan P1 dan P4 terbaik dalam memprediksi nilai HHV berdasarkan data analisis ultimate, dimana masing-masing memprediksi terbaik di lima biomassa. Berdasarkan sumber biomassa, persamaan P1 baik dalam memprediksi hasil perkebunan dan pertanian yang berupa serabut/serat tinggi dengan kadar karbon dan oksigen yang tinggi dan tidak memiliki sulfur. P4 baik dalam memprediksi biomassa hasil sampingan kehutanan dengan karakter tinggi kadar karbon dan oksigen, rendah hydrogen dan oksigen serta memiliki sulfur.
Pemurnian Asap Cair Hasil Torefaksi Cangkang Sawit dengan Cara Destilasi dan Filtrasi dengan Arang Aktif: Purification of Liquid Smoke from Torrefaction of Palm Oil by Distillation and Filtration with Activated Charcoal Karelius Karelius; Lilis Rosmainar; Angeline Novia Toemon; Made Dirgantara
Jurnal Jejaring Matematika dan Sains Vol. 2 No. 2 (2020): Edisi Desember 2020
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2020.v2.i2.407

Abstract

The liquid smoke produced from the torrefaction process of oil palm shells has the potential to be used as an antiseptic base for hand sanitizer and disinfectant products. It is due to its high phenol and acetic acid content. Apart from phenol and acetic acid, there are many other compounds that must be separated in the hope of obtaining liquid smoke with the main components of acetic acid and phenol, which function as antibacterial agents. This research begins with the production of liquid smoke through a torrefaction process. The liquid smoke obtained is distilled at 150 oC and followed by adsorption with activated charcoal for the purification process. The pH value and acetic acid content in the purified liquid smoke were determined and analyzed using GC-MS to determine the chemical compounds. The pH value has decreased after the refining process by distillation, and activated charcoal is inversely proportional to the increase in acetic acid levels after purification. Based on GC-MS analysis results, it can be seen that the levels of acetic acid, phenol, propanoic acid, and 2-propanone increased after distillation. The loss of 1,2-Benzenediol and 2-Furancarboxaldechde compounds shows that distillation of liquid smoke at 150oC is effective for separating the heavy fraction of liquid smoke. Furthermore, the distilled liquid smoke is filtered using activated charcoal. The GC-MS analysis results showed that the filtration results with activated charcoal could increase acetic acid and propanoic acid levels in liquid smoke.
TRAINING ON WRITING SCIENTIFIC JOURNAL ARTICLES FOR TEACHERS OF SMA NEGERI 5 PALANGKA RAYA Karelius; Revianti Coendraad
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 7 No. 2 (2019): Journal Balanga Edisi Juli-Des 2019
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/balanga.v7i2.1234

Abstract

The current teacher if you want promotion should attach his scientific work to Group IV a to IV b but in Ministerial Decree N0.16 of 2009 scientific papers have become the requirement of the increase of Group III b to III c, then the teacher must have the ability to make the work scientific writing. Community service is aimed to provide knowledge and skills for high school teachers NEGERI 5 Palangka especially those who follow the training of writing scientific papers, where later scientific papers produced in the form of articles are expected to be published in local journals with ISSN. Participants of the event generally consist of junior teachers who are adjusted to the Regulation of the Minister of Administrative Reform and Bureaucratic Reform. 16 Year 2009 About the Functional Position of Teachers and Agencies Credit which, among others, change the promotion and class of teachers to rise the class of IV a must make scientific papers now must be from class III B to III C. Training methods using lectures and frequently asked questions, demonstrations and practice.
APPLICATION OF SEVEN JUMP METHOD WITH APPROACH TO PROBLEM BASED LEARNING On STUDENTS IN PROGRAM STUDI OF MECHANICAL ENGINEERING EDUCATION FKIP PALANGKARAYA UNIVERSITY ACADEMIC YEAR 2014/2015 Sri Murwantini; Karelius
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 3 No. 1 (2015): Journal Balanga Edisi Januari-Juni 2015
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

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Abstract

This study was conducted to determine whether the application of Seven Jump Method (SJM) can improve understanding of concept of electrical measuring instruments on the students in Program Studi of Mechanical Engineering Education FKIP Palangkaraya University Academic Year 2014/2015. SJM implementation phases consisting of pre-discussion, discussion, and after the discussion. Data collection was performed by providing pre-test at the time of pre-discussion and post-test at the time of the postdiscussion. The results showed a significant increase in the value of the pre-test to post-test as well as a change after learning in major categories.
SYNTHESIS OF MANGANESE CLAY AS WATER FILTER MATERIAL OF KAHAYAN RIVER FOR ALTERNATIVE WATER SUPPLY IN KALIMANTAN TENGAH Karelius
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 5 No. 1 (2017): Journal Balanga Edisi Januari-Juni 2017
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

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Abstract

Manganese clay had been synthesized as a water filter in order to find out how the quality of water by using parameters such as pH, concentration of iron (Fe), TSS (Total Suspended Solid) and turbidity in the water of Kahayan River before and after filtering it. The first step of Synthesizing the manganese clay was done bycalcining the natural clayat700 ° C for 3 hours,then it was soaked by applying MnCl2 solution of 5 g / L at 60 ° C for 12 hour; the second phase that itwas washed in order to remove its chloride ions, after that, it was dried at 80 ° C for 3 hours, then it was soaked by applying KMnO4 solution with concentration of 5 g / L at 60 ° C for 24 hours, then the clay was washed. Other supporting filters which were also used in the filtration processes, namely sand and gravel. Based on the result findings, before filtering the water, its quality was pH 5.5;Fe concentration of 2.16 mg / L, TSS of 258 mg / L;and turbidity of 140 NTU. After filtering the water by using manganese clay, the quality of Kahayan water is qualified to the requirements of clean water as inPermenkes No. 907/Menkes/VII/2002, thatthe parameters pH is 6.5; Fe concentration of 2.16 mg / L TSS 108 mg / L;and turbidity of 11.97 NTU. It is suggested that manganese clay can be used as a water filter Kahayan river for the alternative water suppy in Kalimantan Tengah.
EXTRACTION AND CHARACTERIZATION NATURAL CLAY OF CENTRAL KALIMANTAN AS ONE OF ALTERNATIVES ADDITIVES OF GEOPOLIMER CONCRETE Karelius
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 5 No. 2 (2017): Journal Balanga Edisi Juli-Desember 2017
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

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Abstract

Extraction and characterization of natural clay from Central Kalimantan in form of white clay, yellow clay and red clay as one of the alternative additives of geopolymer concrete has been done. The natural clay from Central Kalimantan was first cleaned and then extracted to remove impurities minerals. The extraction was done chemically with 3M HCl solution and continued with calcination at 500 ° C. Characterization of natural clays, clays extracted by FTIR spectroscopy (Fourier Transform Infrared), XRD (X-ray diffraction), N2 isothermal isothermal fisisorption using gas sorption analyzer based on BET equation. The results of analysis using FTIR and XRD gas sorption analyzer and showed that the main content of natural clay minerals from Central Kalimantan is monmorilonite, halloysite, chrysotile, gibbsite, quartz, anatase, oligoclase, illit, biotite. The results showed that the extraction performed was able to increase the specific surface area of clay, the relative composition of the monmorillonite and quartz minerals, and in turn decreased the relative abundance of the biotite, chrysotile, gibbsite, oligoclase, anatase and illitant minerals which are clay minerals from Central Kalimantan , so that with high content of momorilonite and quartz and large surface area, natural clay as extraction results from Central Kalimantan can be used as an alternative additives of geopolymer concrete.
WORKSHOP ON WRITING OF SCIENTIFIC JOURNAL ARTICLES FOR TEACHERS OF SMA NEGERI 1 PALANGKA RAYA Yossita Wisman; Bernisa; Karelius; Muhammad Rifky; Siswo
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 8 No. 1 (2020): Journal Balanga Edisi Januari-Juni 2020
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/balanga.v8i1.1504

Abstract

Nowadays, in order to obtain promotion from the rank of Group IVa to IVb, a teacher is required to provide scientific works. However, according to Ministerial Decree No. 16/2009, scientific work has become a promotion requirement from Group IIIb to IIIc; thus, the teacher must have the ability to produce scientific papers. This community service was aimed to provide knowledge and skills for teachers of SMAN 1 Palangka Raya to produce and publish scientific papers in the ISSN local journals. Participants in the activity generally consisted of junior teachers and by using training methods in the form of lectures and questions and answers, demonstrations and practice.
THE USE OF LIQUID SMOKE AS LATEX COAGULANT FOR RUBBER FARMER GROUP IN BUKIT LITI VILLAGE, CENTRAL KALIMANTAN Lilis Rosmainar; Karelius; Rasidah; I Nyoman Sudyana; Nyahu Rumbang; Idam Sulastri
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 8 No. 2 (2020): Journal Balanga Edisi Juli-Desember 2020
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/balanga.v8i2.2002

Abstract

Bukit Liti Village is one of villages located in the Kahayan Tengah Sub-district, Pulang Pisau Regency, Central Kalimantan Province. Most people there tap rubber tree simply managed to produce bokar (rubber materials). In making bokar, rubber farmers use coagulant materials that can damage the rubber quality and soak bokar in water pool/creeks which lower the rubber quality and produce bad smell. To solve the problem, a training is conducted to make a simple pyrolysis reactor to produce liquid smoke which will be used as latex coagulant preventing and reducing bad smell and improving the bokar quality. Pyrolysis reactor is made from a used oil tank, and other materials with a thermometer to measure reactor temperature. The reactor is designed to allow a minimum oxygen combustion. The production of rubber wood liquid smoke for latex coagulation process in this research with 50 kg of old rubber wood materials has obtained 125 ml liquid smoke for 4-hour production time. The use of liquid smoke as latex coagulant gives real impacts for farmers such as: environmental friendly, to prevent bacterial growth and oxidation in the latex and latex lump, to prevent and reduce bad smells of bokar from the plantation, during storage and rubber processing in the rubber processing factory. The technology advantages of the liquid smoke are: faster coagulation, high elasticity, able to increase dry rubber content, relatively same price with other coagulant, to increase quality and selling price, produce clean latex and free of environment pollutant.
TRAINING ON BIOGAS PRODUCTION FROM MANURE AND CONCRETE BRICK PRODUCTION TO IMPROVE THE ECONOMY OF CITIZEN IN DANAU SADAR VILLAGE, CENTRAL KALIMANTAN Lilis Rosmainar; Karelius; Rasidah; Akhmad Damsyik; I Made Sadiana; Revianti Coenraad; Tia Monika
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 9 No. 1 (2021): Journal Balanga Edisi Januari-Juni 2021
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/balanga.v9i1.2954

Abstract

Danau Sadar Village is a village located in the sub-district of Dusun Selatan, 8 km from Buntok, the capital of South Barito Regency. This village has several potentials such as rubber plantation, livestock sector, tourism, and fisheries sector. Even though this potential is quite remarkable, the citizen welfare is still in low catagories due to the lack of skill in managing it. This condition happened because not all workers are engaged in the production process. Related to the condition of the community in Danau Sadar Village, an idea emerged to empower the community, by providing training to improve their skills. The objectives of community service in Danau Sadar Village are as follows: (1) assisting the people of Danau Sadar Village in developing economic independence; (2) improving entrepreneurial skills through the training provided. The community service program has been successful by carrying out two types of training activities to improve citizen welfare: training on biogas reactors from manure and brick making to obtain optimal products in terms of production costs and quality. The citizen in Danau Sadar Village welcomes this community service program. They hope that Palangka Raya University will carry out the community service program regularly in their village.
Co-Authors Abdul Hadjranul Fatah Akhmad Damsyik Akhmad Damsyik Angeline Novia Toemon Bernisa Dwi Siswanta Dyah Ayu Pramoda Wardani I Made Sadiana I Nyoman, Sudyana, Idam Sulastri Lilis Rosmainar Lilis Rosmainar Made Dirgantara Muhammad Rifky Novi Kristian Nyahu Rumbang Nyahu Rumbang Rasidah Rasidah Retno Agnestisia Revianti Coendraad Revianti Coenraad Revianti Coenraad Siswo Sri Murwantini Suyanta Suyanta Tia Monika Whendy Trissan Wiratno Yossita Wisman