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A batch experiment was conducted to study the effect of pH and temperature on absorption and desorption of copper in soil, soil samples were collected from the vicinity of a copper tailings yard. The results showed that the pH value is one of the most important factors that influence the adsorption of copper. The Cu adsorption was reduced at the low pH. By increasing the pH value, the adsorption increased...
A phytase-producing strain was isolated from humous soil near the root of crops in Heilongjiang province in China. According to the morphological results by microscope and transmission electron microscope, strain No. 26-13-4 was identified as Spicaria Harting. The enzyme characteristics of Spicaria Harting phytase were studied. The optimal temperature and pH for sodium-phytate hydrolysis by Spicaria...
Based on large quantities of investigation achievement from indoor experiments and field sampling analysis on water quality, the influencing factors of the changing of fluorine concentration is analyzed. The research finds out that condition of strong acid (pH≤6)can prevent the transportation of fluorine into water; condition of neutral or alkaline (pH≥6) is suitable for the transportation of fluorine,...
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