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All Journal PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Adelina Ryan Candra Dewi
Pascasarjana Pendidikan Fisika Universitas Negeri Semarang, Jl. Bendan Ngisor Sampangan, Kota Semarang 50233
Electrical & Electronics Engineering Energy Physics Other

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PEMANFAATAN ARANG DARI BATANG POHON DENGAN PEREKAT PVAC UNTUK DEGRADASI LIMBAH METHYLENE BLUE Adelina Ryan Candra Dewi; Masturi Masturi; Ian Yulianti; Agus Ulin Nuha
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (615.692 KB) | DOI: 10.21009/0305020201

Abstract

The dye is widely used in the industry which came dye textiles, plastics, and batik. Results of waste as a result of the dye can cause poisoning which is very dangerous. Waste methylene blue into one of the results of waste textile color. Charcoal from waste tree trunks using adhesives PVAC successfully made into a carbon that is able to absorb the waste dye methylene blue. Making carbon with PVAC adhesive into new things that are simple to absorb waste dye and easy to do by the general public without the use of laboratory equipment. The purpose of this study was to determine the effect of variation of immersion time and the mass of charcoal to the transmittance and absorption of waste degradation methylene blue 67 ppm. Degradation of methylene blue waste generated by providing independent variable mass quantities of charcoal trunk as much as 3g, 6g, 9g, 12g, 15g and 18g and variable time soaking for 12 hours and 36 hours. The concentration of methylene blue before and after irradiation was measured using a UV-Vis spectrometer. The results showed that the soaking time and the amount of carbon affect the absorbance and transmittance of methylene blue waste. The more the sheer number of masses of charcoal and charcoal long soaking time, giving the plot a graph of absorbance down and plot a graph of transmittance rose nearly perfect degradation. Keywords: Carbon, PVAC, Waste methylene blue, absorbance, transmittansion.
ABSORBANCE SPECTRUM CARBON NANODOTS (C-DOTS) DAUN TEMBAKAU Adelina Ryan Candra Dewi; Mahardika Prasetya Aji; Sulhadi Sulhadi
PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) Vol 5 (2016): PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL) SNF2016
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (541.001 KB) | DOI: 10.21009/0305020225

Abstract

Synthesis of C-Dots of dried tobacco leaves have been successfully carried out. C- Dots produced in liquid form, it is proved that the leaves of tobacco containing nicotine (toxic), can be transformed into new things more beneficial for the application. Extraction of tobacco leaves using 90% alcohol and water for 3.5 hours. A precursor solution prepared by adding urea degan variation of 1-6 grams into 20 ml extraction results. Dots C- synthesis is done by heating the precursor solution hydrothermally using a furnace for 30 minutes at 300 ° C temperature conditions. The physical properties of color C-Dots menunjukkam brown tobacco leaf to the color yellow. C-Dots from tobacco leaves that have been produced have absorption spectra of light at a wavelength of 398-430 nm. The maximum absorbance spectrum dihasilkn time of adding urea 1g. Energy gap when the addition of urea 1g have indigo ~ 2.25 eV and the energy gap when the addition of 2g to 6g urea have the same value of ~ 2.7 eV. When the addition of 2 g to 6 g of urea does not affect the energy gap C-Dots. Keyword : C-dots, leaf tobacco, absorbance, energy g
Co-Authors Agus Ulin Nuha Ian Yulianti Mahardika Prasetya Aji Masturi Masturi Sulhadi Sulhadi