Process for bio-bleaching of kraft pulp using bacterial consortia
US7736879B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2005 |
| Grant date | Jun 15, 2010 |
| Priority date | — |
| Expiry date | Apr 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.