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

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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.
PEMANFAATAN SELULOSA DARI KULIT UMBUT ROTAN (Calamus sp) SEBAGAI ADSORBEN METILEN BIRU Nyahu Rumbang; Whendy Trissan; Karelius Karelius; Retno Agnestisia
Jurnal Sains dan Terapan Kimia Vol 15, No 2 (2021)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (565.173 KB) | DOI: 10.20527/jstk.v15i2.8266

Abstract

Kulit umbut rotan merupakan bahan berlignoselulosa. Kandungan selulosa yang cukup tinggi pada kulit umbut rotan, menjadikan selulosa kulit umbut rotan (Calamus sp) dapat dipertimbangkan sebagai sumber adsorben metilen biru. Persiapan Sampel Kulit Umbut Rotan (Calamus sp) dimulai dari pemotongan, pengeringan, penghalusan, dan pengayakan 60 mesh hingga diperoleh sampel kulit umbut rotan yang selanjutnya akan dilakukan isolasi selulosa. Dilanjutkan tahapan untuk memisahkan selulosa kulit umbut rotan (Calamus sp) dari komonen-komponen kimia yang lain dapat menggunakan pelarut NaOH 20% panas. Tahap terakhir adalah Uji adsorpsi terhadap metilen biru dilakukan dengan kajian pengaruh pH, kinetika adsorpsi dan kesetimbangan adsorpsi terhadap serbuk kulit umbut rotan dan selulosa kulit umbut rotan. Isolasi selulosa dari kulit umbut rotan dapat dilakukan dengan menggunakan pelarut basa (NaOH) panas yang dapat menyerang dan merusak struktur lignin pada bagian kristalin dan amorf serta memisahkan sebagian hemiselulosa. Proses adsorpsi serbuk selulosa kulit umbut rotan terhadap metilen biru mencapai optimum pada pH 8, dengan waktu optimum 40 menit. Kajian kinetika dan kesetimbangan adsorpsi menunjukkan bahwa adsorpsi metilen biru oleh selulosa kulit umbut rotan mengikuti kinetika orde dua semu dengan pola isoterm Langmuir.
INVESTIGASI SIFAT MAGNET DAN LUAS PERMUKAAN BENTONIT TERMAGNETISASI SEBAGAI ADSORBEN CEPAT PISAH Dyah Ayu Pramoda Wardani; Akhmad Damsyik; Karelius Karelius; Suyanta Suyanta; Dwi Siswanta
Jurnal Sains dan Terapan Kimia Vol 15, No 2 (2021)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (626.361 KB) | DOI: 10.20527/jstk.v15i2.9726

Abstract

Bentonit merupakan material alam yang memiliki kecenderungan yang tinggi membentuk koloid, ukuran partikelnya yang dapat membesar sampai beberapa kali lipat jika terkontak dengan air dan membentuk suspensi, akan menimbulkan kesulitan dalam proses pemisahannya dari fasa cair setelah proses adsorpsi. Salah satu upaya untuk mengatasi kelemahan tersebut ialah dengan melakukan modifikasi bentonit menggunakan magnetit (Fe3O4), yang akan mengakibatkan adanya sifat kemagnetan pada material tersebut. Sifat kemagnetan ini diharapkan memudahkan pemisahan partikel–partikel bentonit termodifikasi setelah proses adsorpsi dapat dilakukan dengan mudah dan cepat menggunakan medan magnet eksternal. Dalam studi ini dikaji sifat kemagnetan bentonit termagnetisasi menggunakan instrumen VSM (Vibrating Sample Magnetometer) dan dikaji luas permukaan bentonit teraktivasi dan bentonit termagnetisasi menggunakan SSA (Surface Sorption Analyzer) berdasarkan persamaan BET.Hasil penelitian menunjukkan bahwa analisis VSM memberikan nilai Ms pada Fe3O4 murni lebih besar (64 emu/g) dibandingkan bentonit termagnetisasi (11 emu/g). Berdasarkan data analisis SSA diperoleh bahwa sampel bentonit termagnetisasi memiliki luas permukaan spesifik yang lebih kecil bila dibandingkan dengan bentonit teraktivasi, yaitu masing-masing sebesar 222 dan 138 m2/g.
Synthesis of Natural Clay Magnetite Composite as Adsorbent of Methylene Blue I Made Sadiana; Abdul Hadjranul Fatah; Karelius Karelius
Jurnal Sains dan Terapan Kimia Vol 11, No 2 (2017)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (701.616 KB) | DOI: 10.20527/jstk.v11i2.4042

Abstract

Synthesis of natural clay magnetite composite has been done. The composite was applicated as adsorbent of methylene blue dye in aqueous solution. natural clay was activated with acid solution, synthesis of natural clay magnetite composite was done by coprecipitation method in the molar ratio Fe2+: Fe3+ = 1 : 2 at temperature 85οC. Characterization of the synthesis results is done by XRD and FTIR. Adsorption using batch system with the optimum pH, kinetic and equilibrium aspects of adsorption were studied. The characterization results shows that iron oxide Fe3O4 (magnetite) can be composited with natural clay. The activated and natural clay magnetite composite can adsorbed methylene blue dye from aqueous solution, with the optimum adsorption at pH 3. Adsorption of those adsorbent followed the kinetic eqution of pseudo order 2 with reaction rate constant for activated and natural clay magnetite composite was 1.68 x 10-3 and 7.13 x 10-3 g/mg.minute. The isotherm adsorption is Langmuir isotherm with adsorption capacity was 1.72 x 10-4 mol/g and 1.84 x 10-4 mol/g. This kinetic reactions model shows that the natural clay magnetite composite is able to adsorbed rhodamine B in aqueous solution and accelerated separation of adsorbent from aqueous phase by external magnet field.Keywords: natural clay, magnetite, composite and adsorption.
Co-Authors Abdul Hadjranul Fatah Akhmad Damsyik Akhmad Damsyik Bernisa Dwi Siswanta I Made Sadiana I Nyoman, Sudyana, Idam Sulastri Lilis Rosmainar Lilis Rosmainar Muhammad Rifky Nyahu Rumbang Nyahu Rumbang Rasidah Rasidah Retno Agnestisia Revianti Coendraad Revianti Coenraad Siswo Sri Murwantini Suyanta Suyanta Tia Monika Whendy Trissan Widya Krestina, Luqman Hakim, Dyah Ayu Pramoda Wardani, Wisman, Yossita