• Identification of Optimal Operation Factors for Landfarming using Response Surface Methodology
  • Kwon, Ipsae;Lee, Hanuk;Kim, Jin-Hwan;Park, Jae-Woo;
  • Department of Civil and Environmental Engineering, Hanyang University;Department of Civil and Environmental Engineering, Hanyang University;Department of Civil and Environmental Engineering, Hanyang University;Department of Civil and Environmental Engineering, Hanyang University;
  • 반응표면분석법을 활용한 토양경작법에서 TPH 저감에 영향을 미치는 인자의 최적조건 도출
  • 권잎새;이한욱;김진환;박재우;
  • 한양대학교 건설환경공학과;한양대학교 건설환경공학과;한양대학교 건설환경공학과;한양대학교 건설환경공학과;
Abstract
Landfarming that supplies aerobic biodegradation condition to indigenous microbes in soils is a biological remediation technology. In this research, volatilization and biodegradation rate by indigenous microbes in the soil contaminated with total petroleum hydrocarbons (TPH) were measured. Soils were contaminated with diesel artificially and divided into two parts. One was sterilized by autoclave to remove indigenous microorganism and the other was used as it was. Various moisture contents and number of tillings were applied to the soil to find out proper condition to minimize volatilization and enhance bioremediation. Volatilization of TPH was inhibited and biodegradation was enhanced by increase on moisture content. Tilling was usually used to supply air for microbes, but tillings did not affect the growth of microbes in our study. Enough moisture content and proper aeration are important to control volatilization in landfarming. Also, TPH degradation was a function of the microbe counts (x1), numbers of tilling (x2), and moisture content (x3) from the application of the response surface methodology. Statistical results showed the order of significance of the independent variables to be microbe counts > numbers of tilling > moisture content.

Keywords: Land farming;Microbe;Moisture content;Tilling;Response surface methodology;

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This Article

  • 2016; 21(1): 94-103

    Published on Feb 28, 2016

  • 10.7857/JSGE.2016.21.1.094
  • Received on Dec 7, 2015
  • Revised on Dec 17, 2015
  • Accepted on Dec 23, 2015