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All Journal Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Envirotek : Jurnal Ilmiah Teknik Lingkungan
Oktavia Safitri
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Chemical Engineering, Chemistry & Bioengineering Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering

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VISUALISASI DALAM PERANCANGAN DAN PELAKSANAAN PRAKTIKUM BIOLOGI SEKOLAH Oktavia Safitri; Evi Suryawati; Darmadi Darmadi
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 8, No 1 (2021): EDISI 1 JANUARI-JUNI 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract: Knowledge about the development of learning with the practicummethod is one of the initial assets of Biology Education students to becomeprofessional biology teachers. But in reality, there are still students who have notmastered the competencies related to practicum activities. Based on these problems,this study aims to produce an independent learning resource in the form ofvisualization in the design and implementation of school biology practicum in the formof a video equipped with a guidebook. This research was conducted at the PMIPALaboratory FKIP Riau University, SMAN 8 Pekanbaru and SMAN 15 Pekanbaru inApril-December 2020. The type of research used is Research and Development (R&D)which refers to the ADDIE model. The instruments used in this study were validationsheets and response questionnaires. The results of the visualization product validationobtained an average score of 3.57 (video) and 3.39 (guidebook) with very validcategories. The results of the limited trial phase I obtained an average value of 3.64(video) and 3.72 (guidebook) with very good categories. Meanwhile, the results of thesecond phase of the trial obtained an average value of 3.43 (video) and 3.47(guidebook) with very good categories. Based on the results of the validation andtesting, it shows that the visualization products in the design and implementation ofthe developed school biology practicum can be used as a source of independentlearning for prospective biology teachers.Key Words: Implementation, Design, Practicum, Visualization
PEMBUATAN SILIKA TERMODIFIKASI DARI SEKAM PADI SEBAGAI ADSORBEN LOGAM BERAT PADA LIMBAH CAIR [REVIEW] Oktavia Safitri; Harun Alrasyid; Kartika Udyani
Envirotek : Jurnal Ilmiah Teknik Lingkungan Vol 12 No 2 (2020): Envirotek : Jurnal Ilmiah Teknik Lingkungan
Publisher : Program Studi Teknik Lingkungan, Universitas Pembangunan Nasional Veteran Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (379.127 KB) | DOI: 10.33005/envirotek.v12i2.53

Abstract

ABSTRACT Some heavy metals that can pollute the environment and are toxic are lead [Pb], nickel [Ni]. Waste water treatment that contains heavy metals can be done by the adsorption method, because it is more efficient and economical. The review discusses how to determine the use of rice husks as heavy metal adsorbents in liquid waste and how to modify silica rice husks as adsorbents in order to increase the ability of absorption of heavy metals in liquid waste. In this stage the method of rice husk silica by means of rice husk is heated by heating around 7500C and the rice husk silica is modified with solutions such as 3-aminopropyl trimethoxysilane. From this literature study can provide information about the adsorption power of modified rice husk silica to heavy metals in liquid waste. The order maksimum of Pb, and Ni is 98,14% absorption efficiency and 99.43% Keywords : waste water, heavy metals, silica, rice husk, adsorption
Co-Authors AA Sudharmawan, AA Darmadi Darmadi Evi Suryawati Kartika Udyani