CAP18™ and CAP18-ME™ are slightly viscous liquids refined from natural vegetable oils, for the purpose of stimulating anaerobic biodegradation in groundwater. CAP18™ is a food-grade, vegetable oil product that has been refined to concentrate what are known as C18 unsaturated fatty acids. The C18 unsaturated fatty acids provide a special benefit for groundwater remediation. CAP18-ME™ is a modification of CAP18™ that includes esters of fatty acids (which are themselves derived from CAP18™), which provide a more readily available source of carbon to stimulate anaerobic biodegradation. CAP18™ and CAP18-ME™ can be used for cost-effective, rapid treatment of chlorinated solvents, perchlorate, nitrate and explosives, found as contaminants in soil and groundwater. CAP18™ and CAP18-ME™remediations are accomplished in-place without high capital costs, disruptive site activities or complex engineered delivery systems.
CAP18™ and CAP18-ME™ stimulates microbes living in the soil and aquifer to naturally degrade contaminants under anaerobic (oxygen-free) conditions. The long chain fatty acids are consumed via a process known as beta-oxidation, which establishes optimal anaerobic conditions for contaminant degradation and produces hydrogen over a sustained period of time (many months to years). The hydrogen is utilized by microbes to biologically destroy contaminants by stripping chlorine or nitrogen atoms from the molecule. Unlike many other bioremediation substrates, CAP18™ and CAP18-ME™ inhibits methanogenesis, thereby providing more hydrogen generation for reduction of target compounds rather than formation of undesirable methane.

Compared to other bioremediation enhancements, CAP18™ and CAP18-ME™ are LOWER COST, more efficient, longer lasting and easier to apply.

Properties and mechanisms CAP18 and CAP18-ME (394 kB)
Eigenschaften und Wirkung CAP18 und CAP18-ME (418 kB)
Eigenschappen en werking CAP18 en CAP18-ME (411 kB)

CAP 18 reference map (790 kB)