Push-Pull Test Report
Abstract This report aims to summarize and highlight the potential of Push-Pull Test in evaluating the bioremediation community. A brief description on Pull-Push test, the experiments involved and the necessity for it opens up the discussion in this report. The rate of bioremediation can be estimated by the breakthrough curve which can be obtained using an analytical method on the extracted samples. The utilization of the dilution factor will also be introduced in this report. This is followed by the advantages and constraints of the Push-Pull test. After gathering all the information presented in previous sections, a case study of co-metabolism of chlorinated ethene will be elaborated to showcase the understanding of the group on the …show more content…
Biodegradation of the target contaminant is sensitive towards the environmental conditions such as nutrient, pH and temperature, which are difficult to reproduce in laboratory. Furthermore, samples collected from the field-site may not be of best depiction due to the heterogeneity of the soil (Brusseau, Piatt, Wang, & Hu, 1999). Hence, the best way for evaluation has to be done on the field-site itself which is by Push-Pull Test in the context of this report. Push pull test is useful for regulators to evaluate the soundness of a proposed or on going in-situ bioremediation system. It can also be useful to the researcher that evaluates the feasibility of utilizing an intrinsic or in-situ bioremediation of a target contaminant by evaluating the biodegradability potential of contaminants. 2. What is Push-Pull Tests? Push-pull tests are conducted by “pushing” a test solution of known concentration into the saturated zone of an aquifer via a well. The samples were then “pulled’ out of the aquifer via the same well over time to obtain information on the magnitude and rate of the biodegradation as shown in Figure 1 (Istok, Humphrey, Schroth, Hyman, & O'Reilly, 1997). Push-pull test is useful in measuring the rate of chemical or microbial reactions, which is useful in reactive transport modeling (Istok J. D., …show more content…
Among these, the third criteria is the hardest to fulfill because the organisms that are capable of degrading the contaminant in the laboratory may not be able to carry out the same task in the real
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