Table 3.

Natural catalyst amount for different ribbon retting conditions.

Different conditions	Natural catalyst (Fermented soybean), Catalyst was taken on the weight of the material, kg
Concrete Tank 1 (A) (Without natural catalyst)	–
Concrete Tank 2 (B) (2.5% natural catalyst)	0.25
Concrete Tank 3 (C) (5% natural catalyst)	0.50
Concrete Tank 4 (D) (7.5% natural catalyst)	0.75
Existing method (E) (Polyethylene covered micro pond without catalyst)	–