In the present work, this potential has been demonstrated through the process development for a solvent-free production process including a Michael addition and following product purification.
SBP (≥97.0 %, GC) was purchased from Tokyo Chemical Industry (Japan) and used as the extracted solvent in the furfural production process.
Hence, the manufacturers have been aspiring to minimize the amount of the organic solvents used in the drug production process.
Using the commercial membrane CMC-CF-23 from Celfa the water content in the isopropanol/water mixture was reduced from the initial 35 wt.% to a final value of 0.3 wt.%, providing a dry solvent adequate for recycling to the production process.
Waste containing solvents is also generated during the production process.
Green chemistry "is about looking at every component of a production process, including energy input, side-products, solvents, engineering, and transportation," says Ed Marshall, a green chemist at Imperial College London.
The majority of the solvents employed in production processes are organic chemicals with hazardous and toxic properties.
A Cac_3319 mutant showed significantly reduced sporulation activity as well as increased butanol production [ 45, 46], showing solvent production regulation to be a highly complex and relatively poorly understood process.
The climate footprint is mainly driven by the production process itself and precursor production, mainly the solvents (2-ethylhexanoic acid and xylene) and oxygen.
Therefore, any biodiesel production process that obviates biomass drying and organic solvents use for oil extraction could lead to significant energy and cost savings.
