| 摘要 |
<p>This specification discloses a process for the production of alga biopolymer and alga biomass. The first step of the process is carried out in a seed reactor. In this step, an aqueous culture containing an inoculum of alga and nutrients required for the growth of the alga is subjected to artificial illumination of an intensity and for such a time as to initiate growth of the alga. The aqueous culture is also subjected to the action of a mixture of carbon dioxide and air during this first step. After growth of the alga is initiated, at least a portion of the alga biomass is transferred to a main reactor where the second step of the process is carried out. In this step, the alga biomass in an aqueous culture is subjected to artificial illumination of an intensity and duration to effect growth of alga biomass and, concomitantly, synthesis of alga biopolymer. It is also subjected to the action of a mixture of carbon dioxide and air. During this second step the aqueous culture containing the alga biomass may be additionally subjected to the action of solar radiation. Following the second step, alga biomass is separated from the aqueous culture which contains extracellular biopolymer. The alga biopolymer can be subjected to a variety of uses. The biomass, if desired, may be treated for recovery of intracellular biopolymer and the resultant biomass sludge subjected to a variety of uses.</p> |
