Science Inventory

Use of Additives in Bioremediation of Contaminated Groundwater and Soil

Citation:

He, Y. AND C. Su. Use of Additives in Bioremediation of Contaminated Groundwater and Soil. Advances in Bioremediation of Wastewater and Polluted Soil. InTech, Rijeka, Croatia, , 145-164, (2015).

Impact/Purpose:

Book entitled: Bioremediation. Publisher: InTech Europe, Janeza Trdine 9, 51000 Rijeka, Croatia.

Description:

This chapter reviews application of additives used in bioremediation of chlorinated solvents and fuels for groundwater and soil remediation. Soluble carbon substrates are applicable to most site conditions except aquifers with very high or very low groundwater flow. Slow-release and solid substrates are intended to be long-lasting in supplying carbon for microbial growth thereby minimizing operation and maintenance requirements. Microbes as special additives can be used to enhance bioremediation (bioaugmentation) where such microbes are lacking. Oxygen gas can be added to increase aerobic biodegradation, and nutrients addition may be needed to stimulate and maintain sufficient microbial population. pH modifiers to control acidity for optimal microbial growth and degradation can also be added. Delivery of additives to the subsurface can be accomplished through permanent injection wells, direct-push methods, or permeable reactive barriers (biowall). Potential issues with additive use include biofouling, stalling, short circuiting, displacement, reduced hydraulic conductivity, and secondary water quality deterioration. Methods and techniques to deal with these issues are provided and future research needs are identified.

Record Details:

Record Type: DOCUMENT (BOOK CHAPTER)
Product Published Date: 09/30/2015
Record Last Revised: 06/10/2016
OMB Category: Other
Record ID: 318630

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL RISK MANAGEMENT RESEARCH LABORATORY

GROUND WATER AND ECOSYSTEMS RESTORATION DIVISION

APPLIED RESEARCH & TECHNICAL SUPPORT BRANCH