Copper ions in aqueous solution are known to promote organic oxidation semiconductor photocatalysis, but the counter anions seem be important as well. In this work, performance of Cu(ClO4)2 presence several sodium forms (F−, Cl−, ClO4−, NO3−, and SO42−) has been examined. Phenol (pH 4) under UV light was used model reaction TiO2 anatase (AT) rutile (RT) photocatalysts. On addition 0.1–5 mM Cu2+...

Since 1990, the Lake Kinneret trophic status has shifted from phosphorus to nitrogen limitation. In summer of 1994, an outbreak N2 fixing cyanobacterium Aphanizomenon ovalisporum invaded epilimnion Kinneret. then, sporadic densities harmful cyanobacteria (HFCB) reappeared in lake together with other toxic non-N2 cyanobacteria. This predicted ecological modification developed because a worldwide...

Densities of fifteen aqueous solutions sulfuric acid (H2SO4) have been measured by vibrating-tube densimetry at solute molalities (m) from (0.01 to 3.0) mol·kg−1 over the temperature range 293.15 ≤ T/K 343.15. These data used calculate corresponding apparent molar volumes Vϕ(H2SO4,aq), which represent a significant expansion volumetric database for this industrially-important acid. At 298.15 K ...

the present study was carried out to evaluate three interpolation methods including weighted moving average (wma) with the power of 2 and 3, kriging and cokriging methods. data of 23 wells in mazandaran province were collected in fall and spring 2006. seven parameters including electrical conductivity (ec), ph, total dissolved solids (tds), sodium adsorption ratio (sar), total hardness (th), ch...