Novel Chemical Process for Bleaching De-inked Pulp

EPA Contract Number: 68D10045
Title: Novel Chemical Process for Bleaching De-inked Pulp
Investigators: Ballantyne, Wayne E.
Small Business: Guild Associates Inc.
EPA Contact: Manager, SBIR Program
Phase: I
Project Period: September 1, 1991 through March 1, 1992
Project Amount: $49,712
RFA: Small Business Innovation Research (SBIR) - Phase I (1991) RFA Text |  Recipients Lists
Research Category: SBIR - Pollution Prevention , Pollution Prevention/Sustainable Development , Small Business Innovation Research (SBIR)


The proposal responds to the increasing pressure to re- cycle paper. Since nonbleached papaer uses almost 100% recycle pulp, additional recycling must come from bleach- ing recycled pulp to be suitable for newsprint and white paper. The objective of the experiments is to demonstrate the feasibility of bleaching recycled pulp with a unique chemical mixture. The experiments will use samples of commercial de-inked pulp nd a bench scale reactor to collect data on the increase in brightness with time and chemical concentration. Process calculations predict eco- nomic advantages of this process compared to conventional technology. The process should be applicable to existing de-inking plants as an added process step and applicable to new plant construction integrated with the plant design.

Current bleaching chemical cost for recycled pulp is around $20 per ton. The forecast chemical cost for this technology is $2 per ton. This represents annual savings of over S60 million on today's bleached recycled pulp. Since paper recycling is forecast to grow significantly, the savings will be much greater.

Supplemental Keywords:

Economic, Social, & Behavioral Science Research Program, Scientific Discipline, Sustainable Industry/Business, cleaner production/pollution prevention, Chemistry, Technology for Sustainable Environment, New/Innovative technologies, Engineering, Market mechanisms, Economics & Decision Making, waste reduction, novel chemical process, economic benefits, pulp and paper industry, recycling, pollution prevention

Progress and Final Reports:

  • Final