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Rika '
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Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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EFEK PENAMBAHAN PARTIKEL MAGNETIK Fe3O4 TERHADAP KEMAMPUAN SERAPAN KARBON AKTIF SERBUK GERGAJI KAYU PADA LOGAM BERAT BESI (Fe) Erman Taer; Sugianto '; Rika '
Komunikasi Fisika Indonesia Vol 12, No 11 (2015)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (261.464 KB) | DOI: 10.31258/jkfi.12.11.752-758

Abstract

Telah dilakukan study tentang aplikasi karbon aktif magnetik dari serbuk gergaji kayu karet (SGKK) sebagai penyerap logam berat Fe. SGKK diaktivasi menggunakan larutan KOH sebagai aktivator kimia, kemudian SGKK dicampur dengan FeCl3 sebagai prekursor nanopartikel magnetik dan dikarbonisasi pada suhu 850 0 C dalam lingkungan gas Nitrogen (N2). Karakterisasi SEM, EDX, dan XRD bertujuan untuk melihat morfologi permukaan, komposisi kimia, serta strukstur sampel. Hasil pengujian SEM menunjukkan bahwa composite carbon dan nano-Fe3O4 telihat dengan kebera nano-Fe3O4 merata pada permukaan karbon. Pengujian EDX memastikan bahwa partikel yang terdapat pada permukaan karbon adalah unsur Fe3O4. Hasil Uji XRD menunjukkan bahwa logam Fe muncul dengan kehadiran puncak pada ș 360 . Sementara itu, uji kemampuan serapan karbon aktif dilakukan menggunakan SSA. Hasil uji SSA menunjukkan bahwa persentase serapan maksimum pada sampel air sumur bor, air sumur galian dan air sumur bor setelah dilakukan penyaringan berturut-turut adalah sebesar 97,94 %, 83,58 %, dan 56,18%.
ANALISIS FAKTOR-FAKTOR YANG MEMPENGARUHI MINAT MELANJUTKAN PENDIDIKAN KE PERGURUAN TINGGI PADA SISWA SMA DI KECAMATAN PULAU MERBAU KABUPATEN KEPULAUAN MERANTI Rika '; Gimin '; Supentri '
Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan Vol 4, No 2 (2017): Wisuda Oktober 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Keguruan dan Ilmu Pendidikan

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Abstract

Abstract: This research is based on the low interest of high school graduates in Pulau Merbau sub-district to continue their study to university. Students' interest to continue their education to university is less than 50% of the number of students who graduate each year. The formulation of the problem in this research is how is the interest of high school students in Pulau Merbau District to continue their education to university and the factors that affect it. The purpose of this study is to determine the interest and factors that influence the interest of continuing education to university high school students in the district of Pulau Merbau. This research method is descriptive quantitative. The data were analyzed by using multiple linear regression. The results showed that the interest of continuing education to college in high school students in Pulau Merbau District is high upwards with 88,3% contribution. As for the factors that influence the interest of continuing education to university is the establishment of a person 1.070, the ideals 1.109, talents 1.006, family environment 0.272, school environment 0.345, community environment (-0.345), peer environment 0.135 and the socioeconomic parent 0.009. Thus the hypothesis stating "There is an influence between the interest of continuing education to college and the factors that influence it" is accepted. This is evidenced by multiple linear regression tests between variables X1, X2, X3, X4, X5, X6, X7, X8 and Y. Figures 11.381 and Ftable 2.12. Obtained from the study of Ftable distribution list with N = 60, at 5% significant level, thus can be known Fcount> Ftable or 11.381> 2.12 then H0 is rejected, so hypothesis in this research accepted.Keywords: Interest Continuing Education, Influencing Factors
Co-Authors Erman Taer Gimin Gimin Sugianto ' Supentri