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All Journal Jurnal Riset Kimia Menara Ilmu
Dini Fatmi, Dini
Laboratorium Elektrokimia/Fotokimia FMIPA Universitas Andalas
Agriculture, Biological Sciences & Forestry Chemistry Computer Science & IT Education

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PEMECAHAN (SPLITTING) MOLEKUL AIR MENJADI GAS H2DAN O2 MELALUI PROSES FOTOVOLTAIK Fatmi, Dini; Alif, Admin; Suyani, Hamzar
Jurnal Riset Kimia Vol 5, No 2 (2012): March
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jrk.v5i2.209

Abstract

One method to overcome the scarcity of alternative sources of energy on earth is through the development of photovoltaic cells. This method used a solar energy to electrical energy transformation. In this research, breaking (splitting) of water molecules into H2 and O2 gas by the photovoltaic process uses electrodes CuO/C with Na2SO4 electrolyte. In this process used 2 photovoltaic cells as electricity producing and U-shaped electrolysis cell for solver (splitting) of water molecule produce H2 and O2 gas. CuO electrode (anode) is made through the burning of copper rod in a furnace at temperature 400 oC with a variety of combustion 1, 3, 4 times each lasting for 1 hs, while the cathode in the form of carbon rods obtained from 2B pencil. The optimum conditions for Na2SO4 electrolyte concentration is 0.8 N and for CuO electrodes with 3x burning. Optimum efficiency photovoltaic process was 2.66%. H2 and O2 gas volume obtained near stoichiometric ratio is 2 : 1.
ANALISIS LOGAM BERAT TIMBAL (Pb) AND MANGAN (Mn) PADA AIR DARI TEMPAT PEMBUANGAN AKHIR (TPA) SAMPAH AIR DINGIN Fatmi, Dini
Menara Ilmu Vol 12, No 3 (2018): Vol. XII No. 3 April 2018
Publisher : LPPM Universitas Muhammadiyah Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33559/mi.v12i3.706

Abstract

Final Disposal (TPA) of waste Air Dingin Padang City using open dumping system isexpected to negatively affect the groundwater and surrounding waterways. Research onthe content of heavy metals in landfill water flow in the Air Dingin were made in 2 (two)times that were before the rain and after the rain, then the results were compared with theapplicable standard. The content of heavy metals Pb and Mn in Final Disposal (TPA) ofwaste Air Dingin Padang City were 0,005-0,025 mg/L and 0,0-0,966mg/L. Pbconcentration exceeded the quality standard KEPMEN LH 51 in 1995 leachate pond,while the flow of water and monitoring wells Pb metal content exceeds the qualitystandards PP.RI.No.82 on 2001 and Mn outlet river exceeds the quality standardsPP.RI.No.82 on 2001. In population of all heavy metals well below the quality standardPP.RI.No.82 on 2001. The content heavy metals was affected by the distance of thelocation of waste, the pH value and after of the rain water around the landfill waste.Keyword : Final Disposal (TPA) of waste, heavy metals
Co-Authors Admin Alif Hamzar Suyani