Production of polyhydroxyalcanoates from pulp and paper waste streams
AssigneeInstitut National De La Recherche Scsentifique
InventorsRajeshwar Dayal Tyagi, Rajwinder Kaur
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Abstract
A process for producing polyhydroxyalkanoates (PHA) is provided. The process comprises: providing a waste stream comprising lignocellulosic materials; adding an calcium-containing mineral to the waste stream; heat-treating the waste stream in the presence of the calcium-containing mineral, to obtain a treated waste stream; fermenting at least one strain of PHA-producing microorganism in a culture medium comprising the treated waste stream as a carbon source, to produce the PHA; and extracting the PHA from the PHA-producing microorganism.
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A process for producing polyhydroxyalkanoates (PHA), comprising:
- providing a treated waste stream, wherein the treated waste stream is obtained by a process comprising:
- adding a calcium-containing mineral to a waste stream;
- and
- heat-treating the waste stream in the presence of the calcium-containing mineral, to sterilize the waste stream;
- fermenting at least one strain of PHA-producing microorganism in a culture medium comprising the treated waste stream as a carbon source;
- to produce the PHA;
- and
- extracting the PHA from the PHA-producing microorganism.
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Dependencies are inferred from the claim text.