neutralization and deodorization are combined. A scrubber is then used to condense
the greater part of the fat from the vapors as a water-free product.
The advantages of physical refining method over the chemical refining are listed
as follows:
• Better yields
• High-quality fatty acids as by-products
• Good oil stability
• Simultaneous distillation of fatty acids and deodorization
• Lower cost of equipment
• Simplicity of operation
Ultimately, the marketing of a refined vegetable oil depends on the specifications
met at the end of the processing [8]. The typical steps followed by the industry in the
refining of vegetable oils are discussed below.
Fig. 8.2 Oil refining flow diagram [4]
8 Vegetable Oil Refining Wastes
329
the greater part of the fat from the vapors as a water-free product.
The advantages of physical refining method over the chemical refining are listed
as follows:
• Better yields
• High-quality fatty acids as by-products
• Good oil stability
• Simultaneous distillation of fatty acids and deodorization
• Lower cost of equipment
• Simplicity of operation
Ultimately, the marketing of a refined vegetable oil depends on the specifications
met at the end of the processing [8]. The typical steps followed by the industry in the
refining of vegetable oils are discussed below.
Fig. 8.2 Oil refining flow diagram [4]
8 Vegetable Oil Refining Wastes
329