Patent · US Active

Process for bio-bleaching of kraft pulp using bacterial consortia

US7736879B2 · kind B2 · utility

1Cited by
1References
6Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 28, 2005
Grant dateJun 15, 2010
Priority date
Expiry dateApr 18, 2027

Classification

  • Technology area (CPC D)Textiles; Paper
  • CPC primaryD21C5/005
  • WIPO fieldTextile and paper machines
  • WIPO sectorMechanical engineering

Abstract

The present invention relates to an environment friendly, safe, and efficient four-step method of bio-bleaching Kraft pulp using the following strains of bacteria: (a) Serratia marcescens, MTCC 5094, (b) Pseudomonas aeruginosa, MTCC 5095, (c) Providencia rettgeri, MTCC 5096, (d) Pseudomonas aeruginosa, MTCC 5098. The present invention also provides a microbial consortium comprising a synergistic mixture of ligninolytic bacterial isolates Serratia marcescens, MTCC 5094, Pseudomonas aeruginosa, MTCC 5095, and Pseudomonas aeruginosa, MTCC 5098, or comprising bacterial strains Providencia rettgeri, MTCC 5096, Serratia marcescens, MTCC 5094, Pseudomonas aeruginosa, MTCC 5095, and Pseudomonas aeruginosa, MTCC 5098, and a process for preparing an inoculum of the bacterial isolate Providencia rettgeri, MTCC 5096. Also provided is a process for the preparation of a consortium comprising the ligninolytic bacterial isolates Serratia marcescens, MTCC 5094, Pseudomonas aeruginosa, MTCC 5095, and Pseudomonas aeruginosa, MTCC 5098, as well as a process for the preparation of a pulp suspension for bio-bleaching.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.