PMID: 18409629Apr 16, 2008Paper

Optimization of surfactant-enhanced aquifer remediation for a laboratory BTEX system under parameter uncertainty

Environmental Science & Technology
L HeGuangming Zeng

Abstract

This study develops a nonlinear chance-constrained programming (NCCP) model for optimizing surfactant-enhanced aquifer remediation (SEAR) processes. The model can not only address the parameter uncertainty, but provide a reliability level for the identified optimal remediation strategy. To solve the NCCP model, stepwise cluster analysis (SCA) is used to create a set of proxy simulators for quantifying the relationships between operating conditions (i.e., pumping rate) and probabilities of benzene levels in violation of standard. Compared to conventional parametric inference techniques, SCA is independent of prior assumptions for model forms (e.g., linear or exponential ones) and capable of reflecting complex nonlinear relationships between operating conditions and probabilities. To alleviate the computational efforts in the optimization process, the generated proxy simulators are repeatedly called by simulated annealing (SA) to test the feasibility of each potential solution. The implicit of the optimal NCCP solutions is discussed through a laboratory-scale SEAR system where porosity and intrinsic permeability are treated as stochastic parameters. It is observed that well locations, environmental standards, reliability levels a...Continue Reading

References

Jan 1, 2004·Environmental Science & Technology·Deborah L Thurston, Suresh Srinivasan
Jan 27, 2005·Environmental Science & Technology·Jianjun Chen, H Christopher Frey
Jan 27, 2005·Environmental Science & Technology·Sandra C KarcherJeanne M VanBriesen
May 6, 2005·Environmental Science & Technology·Jan SchaerlaekensJan Feyen
Mar 3, 2006·Environmental Science & Technology·Jacqueline A Macdonald, Mitchell J Small
Apr 8, 2006·Journal of Contaminant Hydrology·Jan SchaerlaekensJan Feyen
May 1, 1995·Environmental Science & Technology·L L RogersV M Johnson

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Citations

Feb 5, 2009·Journal of the Air & Waste Management Association·Hongwei LuLi He
Sep 11, 2009·International Journal of Molecular Sciences·Rosario De LisiNicola Muratore
Sep 22, 2009·Journal of Environmental Management·Hongwei LuLi He
May 15, 2015·Environmental Science and Pollution Research International·Xiuquan WangJunhong Guo
Apr 8, 2015·Environmental Science and Pollution Research International·Anhua Long, Hui Zhang
Sep 11, 2017·Environmental Science and Pollution Research International·Xue JiangYu Zhang
Aug 28, 2021·Journal of Contaminant Hydrology·Yutong LiRonghua Xu

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