Under the light and electron microscopes, the structure of the cell walls of members of the 11 orders in the Class Chlorophyceae, Division Chlorophyta, were examined. With regard to the microfibrillar component of the cell walls, five types of wall structure were distinguished: (A) an apparent lack of a micro fibrillar component (Volvocales, Dasycladales, and some members of the Siphonales), (B...

One of the biggest global challenges in mining industry is managing risks associated with contamination by potentially toxic elements (PTEs) resulting from their activity. The oxidation sulfides main cause polluted mine drainage through leaching PTEs waste and galleries to water systems. Mine can be highly acidic often has a high concentration PTEs, particularly arsenic, one environment’s most ...