By McDonald, Chris; Meggyes, T.; Simon, Franz-Georg
This ebook includes a number of the main up to date learn on reactive limitations and pump-and-treat, with the focus on heavy steel removing. After facing normal problems with groundwater remediation utilizing lively and passive tactics, remediation engineering perform is mentioned with an emphasis on heavy steel remediation, sorption kinetics ...
summary: This booklet incorporates a choice of the main up to date learn on reactive obstacles and pump-and-treat, with the focus on heavy steel removing. After facing basic problems with groundwater remediation utilizing energetic and passive strategies, remediation engineering perform is mentioned with an emphasis on heavy steel remediation, sorption kinetics
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Additional resources for Advanced groundwater remediation : active and passive technologies
For transition metal cations such as Pb2+. g. hexadecyltrimethylammonium, HDTMA, (C16H33)((CH3)3N+) the zeolites can remove non-ionic organic compounds such as benzene and chlorinated hydrocarbons, due to the organic carbon content of the modified sorbent, without lowering the sorption affinity for metal ions (Haggerty and Bowman, 1994). Negatively charged oxyanions such as chromates are sorbed via ion exchange by the cationic surfactant (Bowman, 1999). The organo-zeolite is also applicable for the removal of other oxyanions such as selenate and sulfate.
This allows the drilling pipe to be swung from side to side within the trench by means of a hydraulic mechanism so as to achieve the appropriate length of excavation. Soil excavation in low-strength strata can be performed by slurry jets and in high-strength strata by a milling head which can be attached to the drilling pipe and operated by a hydraulic motor. The drillings can be transported to the surface through the drilling pipe by means of a jet pump. Where slurry jets are used in the trench excavation, both the jet cutting head and the jet pump can be operated by the same slurry pump.
6. High Kd values were derived from adsorption experiments with ferric oxyhydroxide and kaolinite, and low values from those with quartz, which has low adsorptive properties. The pH dependence arises from the surface charge properties of the soil and from the complex aqueous speciation of UVI. The dissolved carbonate concentration also has a significant influence, due to the formation of strong uranyl-carbonato complexes. Retardation can then be calculated from Kd according to equation (16). , 1996; Morrison, 1998).
Advanced groundwater remediation : active and passive technologies by McDonald, Chris; Meggyes, T.; Simon, Franz-Georg