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All Journal ASEAN Journal of Systems Engineering EKSAKTA: Journal of Sciences and Data Analysis English Review: Journal of English Education Chimica et Natura Acta Indonesian Journal of Chemistry IJCER (International Journal of Chemistry Education Research) Khazanah: Jurnal Mahasiswa
Riyanto Riyanto
Chemistry Department, Universitas Islam Indonesia
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Alternative of Visual Based Learning (VBL) Method Based on Short Duration Video for The Instrumental Chemistry Subject in Chemistry Department Riyanto Riyanto; Beta Wulan Febriana
IJCER (International Journal of Chemistry Education Research) VOLUME 1 ISSUE 1, AUGUST 2017
Publisher : Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcer.vol1.iss1.art7

Abstract

ABSTRACT:There had been done a study of Visual Based Learning (VBL) method based on Short Duration Video for Instrumental Chemicals Subject in Chemistry Study Program of Mathematics and Natural Sciences Faculty (MNSF), Islamic University of Indonesia (Universitas Islam Indonesia—UII). VBL method is carried out by creating a short duration video about an instrument according to the syllabus of instrument 1 subject such as AAS, UV-Vis Spectrophotometer, FTIR, GC-MS, and CV. In order to determine the effect of VBL method using, an analysis of scores obtained between the experimental class and the control class is used. To determine the effect of VBL on psychomotor ability is done by observing directly when students do an experiment or practicum. The influence of VBL method application on student motivation was studied by using questionnaire. The results pointed out that the data of both samples (both classes) is homogeneous. T-test results: Two-Sample Assuming Equal Variances showed that there is a significant difference in the final scores mean between the experimental class and the control class. Based on the mean score it indicates that the VBL method is better while compared to the learning method without VBL. VBL method has a significant effect on students motivation andpsychomotor ability when it is viewed from observation of practicum and the score of practicum. The conclusion is that the VBL method is able to increase students' motivation and psychomotor ability in the Instrumental Chemistry subject.Keywords: Learning, video, chemistry, instrumentalReceived: 20 June 2017, Revised: 13 August 2017, Accepted: 1 September 2017
ELEKTROKOAGULASI LIMBAH CAIR INDUSTRI KERTAS MENGGUNAKAN ELEKTRODA AL-AL Herlena Ary Safitri; Arum Muliandari; Asrina Asfarina; - Riyanto
Khazanah: Jurnal Mahasiswa Vol. 11 No. 1: Agustus 2019
Publisher : Universitas Islam Indonesia

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Abstract

Pengolahan limbah cair oleh industri kertas umumnya menggunakan bahan-bahan kimia yang cenderung dapat menimbulkan permasalahan lingkungan. Disisi lain, industri kertas membutuhkan air dalam kapasitas besar dan peraturan lingkungan tentang persyaratan pembuangan air limbah yang berlalu semakin ketat. Oleh karena itu, untuk mengatasi permasalahan lingkungan tersebut diperlukan teknik pengolahan limbah cair industri kertas, yaitu menggunakan metode elektrokoagulasi dengan elektroda Al-Al. Penelitian ini bertujuan untuk menurunkan konsentrasi Chemical Oxygen Demand (COD) pada limbah cair industri kertas menggunakan metode elektrokoagulasi dengan elekroda Al-Al. Elektroda Aluminium (Al) dikarakterisasi dengan menggunakan SEM-EDX. Proses elektrokoagulasi dilakukan variasi tegangan, dan waktu elektrokoagulasi. Larutan sampel hasil elektrokoagulasi dianalisis dengan menggunakan Spektrofotometer UV-Vis. Hasil penelitian menunjukkan bahwa pada proses elektrokoagulasi terhadap limbah cair industri kertas diperoleh kondisi optimum pada tegangan 13 V, dan waktu elektrokoagulasi 80 menit dengan konsentrasi Chemical Oxygen Demand (COD) masingmasing sebesar 1015 mg/L dan 4320 mg/L, dan presentase penurunan konsentrasi Chemical Oxygen Demand (COD) masing-masing sebesar 92,95% dan 69,98%.
Co-Authors Ahmad Safarudin Arum Muliandari Asrina Asfarina Avin Fadilla Hilmi Beta Wulan Febriana Didik Rinan Sumekto Hardjono Sastrohamidjojo Herlena Ary Safitri Jumardin Rua Jumardin Rua Jumat Salimon Marlina Marlina Mega M. Fajrin Mega Maghfirotul Fajrin Mohamed Rozali Othman Nursya’bani Purnama Rizqi Helfiansah Septian Ramadan Slamet - Supranto - Yulan Yulan Zaina Rohayati Zaina Rohayati