The photobioreactor (PBR) is a hybrid life support system that combines advanced closed-loop system (ACLS) with a biological system.
PBR is the first hybrid life-support system – an important milestone in closing resource cycles. This approach is a step towards reducing the need for replenishment in space and should make future long-term exploration missions possible. On Earth, contributions are being made to air treatment in separated spaces (e.g. submarines), to the reduction of CO2 by microalgae or to food production in poor, sunny regions.
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