Abstract: A photobioreactor includes an upper layer of transparent film and a lower layer of film wherein the upper layer and lower layer are attached to each other along the perimeter to form a sealed structure, the upper layer and lower layer also attached to form pathways comprising independent channels within the confines of the outer perimeter, a first manifold and second manifold on opposite ends of the parallel channels within the sealed structure wherein a first portion of the first manifold is in fluid communication with each of an inlet of a first subset of the channels and a second portion of the first manifold is in fluid communication with each of an outlet of a second subset of the channels and wherein the second manifold is in fluid communications with the distal end of the parallel channels plumbing apparatus comprising a degas vessel in fluid communication with the first manifold; and wherein the structure is substantially horizontal in operation.

Abstract: A photobioreactor with a gas input is disclosed herein. The photobioreactor is tilted about an axis of rotation at various angles to provide for various flow patterns of bubbles created by the gas input. The flow patterns may vary, but include: bubble flow; slug or plug flow; churn; annular flow; or wispy annular flow. In certain configurations, a bubble flowing through the photobioreactor may increase algae growth within the reactor.

Abstract: A photobioreactor includes an upper layer of transparent film and a lower layer of film wherein the upper layer and lower layer are attached to each other along the perimeter to form a sealed structure, the upper layer and lower layer also attached to form pathways comprising independent channels within the confines of the outer perimeter, a first manifold and second manifold on opposite ends of the parallel channels within the sealed structure wherein a first portion of the first manifold is in fluid communication with each of an inlet of a first subset of the channels and a second portion of the first manifold is in fluid communication with each of an outlet of a second subset of the channels and wherein the second manifold is in fluid communications with the distal end of the parallel channels plumbing apparatus comprising a degas vessel in fluid communication with the first manifold; and wherein the structure is substantially horizontal in operation.