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Mass Transfer of Organic Compounds in Dilute Aqueous Solutions into High Density Polyethylene Geomembranes
Publisher: American Society of Civil Engineers
Abstract: The mass transfer of ten organic compounds into high density polyethylene (HDPE) geomembranes is investigated using batch immersion tests with dilute aqueous organic compound solutions. For the concentration ranges tested, ...
Estimation of Mass Transport Parameters of Organic Compounds through High Density Polyethylene Geomembranes Using a Modifield Double-Compartment Apparatus
Publisher: American Society of Civil Engineers
Abstract: A modified double-compartment apparatus (MDCA) is used to estimate mass transport parameters of organic compounds through high density polyethylene (HDPE) geomembranes and to investigate the effects of aging and external ...
Initial Alkalinity Requirement and Effect of Alkalinity Sources in Sulfur-Based Autotrophic Denitrification Barrier System
Publisher: American Society of Civil Engineers
Abstract: The present study describes the effects of initial alkalinity and various solid alkalinity sources such as calcite, dolomite, and oyster shell on nitrate removal in a sulfur-oxidizing autotrophic denitrification process. ...
Distribution of the Microbial Community Structure in Sulfur-Based Autotrophic Denitrification Columns
Publisher: American Society of Civil Engineers
Abstract: Substrate-dependent evolution of a bacterial community capable of transforming nitrate was examined in sulfur-based autotrophic denitrification columns. The 16S rRNA genes and denaturing gradient gel electrophoresis (DGGE) ...
Effect of Calcium Organic Additives on the Self-Healing of Concrete Microcracks in the Presence of a New Isolate <i>Bacillus</i> sp. BY1
Publisher: American Society of Civil Engineers
Abstract: Calcium carbonate–based biominerals are considered self-healing materials in concrete. The morphology and mineralogy of biominerals depend highly on the self-healing efficiency of concrete cracks. This study examined the ...
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