algae. The eligible materials for a matching payment are described in the list of eligible materials posted at: xxx.xxx.xxxx.xxx/xxxx Additional material may be periodically added or deleted from consideration as eligible by the CCC through its written consent.
algae. Algae monitoring and management decisions will be considered in the development of the CLMS because a primary lake management concern is algae, both cyanobacteria and green.
algae. The term algae are used to describe a large diverse group of photosynthetic organisms without roots and stems. Chlorophyll is the main photosynthetic pigment in these organisms, and they do not have sterile covering of cells around their reproductive cell. However, this definition is debated as it excludes similar, but not closely related organisms such as cyanobacteria (Xxx, 2008). Microscopic algae are called microalgae. Most of the microalgae encountered in the following experiment are of the algae class Bacillariophyceae, commonly known as diatoms. Diatoms vary in size from a few µm to 1 mm and are built up by silica frustules, which make them easy to recognize. These frustules consist of two parts which fit into each other. This class is divided into two sub-classes which are called Centricae and Pennatae. The Centricae’s frustules radiate from a center or from different points, while Pennatae’s frustules are generally straight lines. Most diatoms do not possess the ability to move actively, and many pelagic diatoms have heavy frustules. Therefore, many diatoms have evolved in different ways to decrease their sinking rate. These characteristics include enlarged surface area, sails, reduced cell size to a few µm and reducing their specific weight by accumulating fat droplets (Xxxxxx and Xxxxxx, 1977, Sorokin, 1999). The microalgae species encountered in the following experiment is Chaetoceros spp., Thalassiosira spp., Melosira spp. and S. costatum. The microalgae isolated was S. costatum, this is because it is a natural specie of algae in the fjord adjacent to the site in which the experiment took place and it has a high growth rate compared to other microalgae. S. costatum has a lens-shaped cell, with two parallel spines on each side. These spines make the cell division into straight, and sometimes long chains. In the 7-15 µm cells there can be found one or two chloroplasts. S. costatum don’t have the ability to move, and need water currents and vertical turbulence to keep itself in the upper levels of the water column to absorb sunlight (Xxxxxx and Xxxxxx, 1977). Algal biodiesel production The algal biodiesel production process contains four main steps. The process starts with cultivation, which is usually done in either open pond systems or closed photo bioreactors (PHB) (Xxxx et al., 2009). Open pond cultivation is typically the option with the lowest investment cost, and allows the algae to fixate CO2 directly from of the air. Closed PHBs are more...
