Patent ID: 8592203

Claim:
A bioreactor comprising a biomass immobilized by a siliceous layer, wherein said siliceous layer is formed of Si(OR) 4 , R′Si(OR) 3 and R′SiH(OR) 2 wherein R and R′, equal or different each other, are alkyl and/or aryl groups, in the ratio of either 65-78%/1-10%/20-25% v/v or 53-70%/10-22%/15-25% v/v, wherein the siliceous layer comprises meshes having a cut off for macromolecules having a molecular weight higher than a selected threshold, said selected threshold being chosen in the range of between 10,000 Dalton and 150,000 Dalton, and wherein said biomass is capable of performing a biological type function.