SBIR-STTR Award

This Small Business Innovation Research (SBIR) Phase I project will investigate the problem of chlorinated solvent contamination in saturated, low permeability soils. The specific objectives of Phase I research are : (1) to quantify the effectiveness of chitin as an electron donor facilitating reductive dechlorination and enhancing bioavailability of tetrachloroethylene (PCE and TCE); ( 2) to incorporate chitin into a delivery system designed for low permeability soils; and (3) to evaluate the delivery method in the field. Preliminary studies have shown that chitin may be an ideal candidate to facilitate low cost, low maintenance bioremediation of chlorinated solvent residual sources. Obtained as a byproduct from the shellfish industry, chitin is particularly attractive as it is very commonly available. If favorable results are obtained during Phase I column and field studies, then a follow on Phase II project will further examine mechanisms controlling process efficiency and longevity. The commercial applications of this project will be in the multi-million dollar bioremediation market.

This Small Business Innovation Research (SBIR) Phase II Project proposes to develop an innovative solution to the the problem of chlorinated solvent contamination in variably saturated, low permeability soils. Prior Phase I work has demonstrated that: 1) chitin is an effective electron donor for stimulating biodegradation of chlorinated solvents, 2) that chitin enhances bioavailability of the solvents, 3) that chitin can be incorporated into a proprietary hydraulic fracturing process for low permeability soils, and 4) that thedelivery method for chitin is effective in the field on a small scale. The objectives of the Phase II Project are to evaluate biodegradation efficiency and longevity of chitin on a large scale. Current approaches for low permeability soils are very capital-intensive and are seldom totally effective. The proposed approach, in contrast, is low-cost and passive, and applicable "in situ". The method is particularly attractive since chitin is available in abundance as a byproduct from the shellfish industry. The commercial applications of this project are in the area of soil bioremediation.