Scan Science and Technology
Contact Leading Edge Experts & Companies
Acid Treatment
The Experts below are selected from a list of 321 Experts worldwide ranked by ideXlab platform
Yunfang Huang – 1st expert on this subject based on the ideXlab platform
-
the influence of Acid Treatment of tio2 porous film electrode on photoelectric performance of dye sensitized solar cell
Solar Energy, 2004Co-Authors: Jihuai Wu, Yunfang HuangAbstract:A dye-sensitized solar cell (DYSC) was assembled by adsorbing cis-dithiocyanato-bis (2,2′-bipyridyl-4,4′-dicarboxylate) ruthenium (II) onto TiO2 porous film. The influence of Acid Treatment of TiO2 electrode with different kinds and concentrations on the photoelectric performance of DYSC was investigated. It was found that DYSC had better photoelectric performance when the TiO2 electrode was treated by hydrochloric Acid than that by sulfuric Acid, nitric Acid and phosphoric Acid. When the concentration of hydrochloric Acid to treat TiO2 electrode increases from 0 to 0.10 M, the fill factor of DYSC increases, the short-circuit current decreases, the open-circuit photovoltage increases and the absorption amount for TiO2 porous film to dye molecules decreases. The Acid Treatment of TiO2 electrode provides useful information on the mechanism of energy conversion of DYSC.
M. D. Loizidou – 2nd expert on this subject based on the ideXlab platform
-
Effect of Acid Treatment on the removal of heavy metals from sewage sludge
Desalination, 2007Co-Authors: M. A. Stylianou, Demetra Kollia, K.j. Haralambous, Vassilis J. Inglezakis, K. G. Moustakas, M. D. LoizidouAbstract:In this paper, sludge samples that were collected from the municipal wastewater Treatment plant in Psittalia (Athens, Greece) were subjected to Acid Treatment using sulphuric Acid. Furthermore, a sequential extraction scheme was applied in order to determine the chemical forms of Ni, Cu, total Cr, Pb and Zn in sewage sludge. The optimum combination was achieved through a variety of tests by applying a ratio of 1:5 of sludge quantity (g) per volume of Acid (mL). The concentration of the Acid used was in the range of 10–20% at two different temperatures (25–80°C) and the contact times ranged from 1 to 60 min. The optimum combination was achieved when the sludge samples were in contact with H2SO4 (20%) for 30 min at 80°C, as these experimental conditions resulted in the highest heavy metal removal efficiency. In addition, the metal distribution in the residue was investigated and the heavy metal partitioning was found to be different after Acid Treatment.
-
Effects of thermal and Acid Treatment on the distribution of heavy metals in sewage sludge
Journal of Environmental Science and Health Part A-toxic\ hazardous Substances & Environmental Engineering, 1998Co-Authors: C. Naoum, K.j. Haralambous, Antonis A. Zorpas, C. Sawides, M. D. LoizidouAbstract:Anaerobically treated sludge from a wastewater Treatment plant (Psittalia) was found to contain significant amounts of metals (Cr, Cu, Fe, Ni, Pb and Zn). The sludge samples were subjected to thermal drying at 105°C and Acid Treatment was applied before and after thermal drying. Different Acid concentrations and contact times were used in order to find the combination that caused the highest metal removal. The metal distribution in raw sewage and in thermally dried sludge as well as the chemical forms of the remaining metal load after Acid Treatment were determined by the application of a sequential chemical extraction procedure. It was found that thermal drying causes a shift of the metal content to more stable phases. A sufficient metal amount was removed by Acid Treatment and the remaining metal content was further stabilized.
Jihuai Wu – 3rd expert on this subject based on the ideXlab platform
-
the influence of Acid Treatment of tio2 porous film electrode on photoelectric performance of dye sensitized solar cell
Solar Energy, 2004Co-Authors: Jihuai Wu, Yunfang HuangAbstract:A dye-sensitized solar cell (DYSC) was assembled by adsorbing cis-dithiocyanato-bis (2,2′-bipyridyl-4,4′-dicarboxylate) ruthenium (II) onto TiO2 porous film. The influence of Acid Treatment of TiO2 electrode with different kinds and concentrations on the photoelectric performance of DYSC was investigated. It was found that DYSC had better photoelectric performance when the TiO2 electrode was treated by hydrochloric Acid than that by sulfuric Acid, nitric Acid and phosphoric Acid. When the concentration of hydrochloric Acid to treat TiO2 electrode increases from 0 to 0.10 M, the fill factor of DYSC increases, the short-circuit current decreases, the open-circuit photovoltage increases and the absorption amount for TiO2 porous film to dye molecules decreases. The Acid Treatment of TiO2 electrode provides useful information on the mechanism of energy conversion of DYSC.