Journal of Environmental Engineering: Recent submissions
Now showing items 941-960 of 6477
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Arsenic and Cadmium Bioremediation by Antarctic Bacteria Capable of Biosynthesizing CdS Fluorescent Nanoparticles
(American Society of Civil Engineers, 2018)Use of microorganisms in contaminated water remediation is one of the most studied processes of recent years. The recovery of metal contaminants by converting them into high-value nanomaterials represents a scarcely explored ... -
Control Strategies for the Mitigation and Removal of Attached Manganese Biofilms
(American Society of Civil Engineers, 2018)Biofilm formation and manganese oxidizing bacteria (MOBs) in water transmission and distribution systems can lead to a wide array of water quality issues, operational problems, and negative hydraulic impacts. To investigate ... -
Urban Drainage Clarifier Load-Response as a Function of Flow, Unsteadiness, and Baffling
(American Society of Civil Engineers, 2018)A major function of clarifiers (basins or tanks) for urban drainage (stormwater or wastewater) is separation of particulate matter (PM) and PM-associated constituents. Clarifier response is often indexed to geometric ... -
Monitoring and Maintenance of Phosphate Adsorbing Filters
(American Society of Civil Engineers, 2018)Field installations of two iron-enhanced sand filters (IESFs), designed to remove phosphate and particulates from stormwater runoff, were monitored and maintained for 1–3 years. One application, a traditional IESF in ... -
Hydrologic and Water-Quality Evaluation of a Rapid-Flow Biofiltration Device
(American Society of Civil Engineers, 2018)Manufactured treatment devices (MTDs) are increasingly installed to treat pollutants from stormwater in urban areas, but few peer-reviewed studies have assessed their field-scale performance. The Filterra biofiltration ... -
Low Dosage Chemical Treatment for Improved Oxygenation of Pulp Mill Effluents
(American Society of Civil Engineers, 2018)Most pulp and paper mills use aerobic biological treatment for their effluents. Aeration is the single most energy intensive process of a treatment plant. Surfactants, commonly occurring in pulping wastewaters, have been ... -
Atmospheric Contributions of Nitrate to Stormwater Runoff from Two Urban Watersheds
(American Society of Civil Engineers, 2018)Two independent methods were used to assess if atmospheric deposition was a major source of nitrate nitrogen (NO3-N) to stormwater in two small urban watersheds located in Lincoln, NE. First, event mean concentrations ... -
Evaluating Nitrate Management in the Volusia Blue Springshed
(American Society of Civil Engineers, 2018)This investigation evaluated five hypothetical scenarios relating nitrate sources in the recharge of the Volusia Blue Spring to eutrophication in the St. Johns River. In the Volusia Blue recharge area of Florida, decades ... -
Viral and Microbial Pathogens, Indicator Microorganisms, Microbial Source Tracking Indicators, and Antibiotic Resistance Genes in a Confined Managed Effluent Recharge System
(American Society of Civil Engineers, 2018)A large-scale comprehensive survey of indicator bacteria, pathogen viruses, coliphages, microbial source tracking (MST) indicators, and antibiotic resistance genes was carried out in the Shafdan soil aquifer treatment (SAT) ... -
Nitrification-Denitrification of Thiocyanate, Ammonia, and Nitrates in Highly Contaminated Gold Mine Effluents Using Methanol as Energy Source
(American Society of Civil Engineers, 2018)Chemical technologies efficiently remove cyanide from wastewater, but only marginally degrade thiocyanate (SCN−); they also produce ammonia nitrogen (NH3-N) and nitrates (NO3−), which require complementary treatment. ... -
Modeling Fecal Indicator Bacteria in Urban Waterways Using Artificial Neural Networks
(American Society of Civil Engineers, 2018)Fecal indicator bacteria (FIB) are used as proxies to measure the microbial water quality of aquatic ecosystems. Methods of modeling FIB have evolved in order to provide accurate and timely prediction to inform decisions ... -
Effect of Slag on Restoration Mechanical Characteristics of Ethanol Gasoline–Contaminated Clay
(American Society of Civil Engineers, 2018)This study investigates the effect of slag on the mechanical characteristics of clay contaminated with ethanol gasoline (E1) by performing a series of unconfined compressive strength (UCS) tests. The effect of slag in four ... -
Biodegradation Potential of Fungi Penicillium Isolated from Synthetic Polymeric Materials
(American Society of Civil Engineers, 2018)Fungi Penicillium isolated from synthetic polymers were investigated for their ability to degrade industrial or naturally occurring wastes such as paraffin, chitin, cellulose, leather, pectin, skim milk, sunflower oil, and ... -
Modeling and Optimization of Acid Blue 193 Removal by UV and Peroxydisulfate Process
(American Society of Civil Engineers, 2018)In this study, the advanced oxidation process for dye removal from textile wastewater treatment was investigated by means of an experimental setup in which the effect of several parameters on dye removal efficiency ... -
Role of the Capillary Fringe in Groundwater Petroleum Cleanup
(American Society of Civil Engineers, 2018)A petroleum contaminant plume, Diesel No. 2 in this case, atop shallow groundwater had been under cleanup for more than two decades using traditional methods of bailing, skimmers, and other techniques that reduced the ... -
Information Content of Wastewater Flowmeter Data before and during a Surcharge
(American Society of Civil Engineers, 2018)When local sanitary sewers discharge to regional treatment systems, flow monitoring is performed for billing purposes, but the information content of these flow data is often overlooked. Wastewater flow data provide ... -
Two-Parameter Mittag-Leffler Solution of Space Fractional Advection-Diffusion Equation for Sediment Suspension in Turbulent Flows
(American Society of Civil Engineers, 2018)In this paper, a simple derivation of the space fractional advection-diffusion equation (fADE) under the steady condition is proposed from a generalized mixing length concept. The obtained equation is a fractional Fickian-type ... -
Organic Matter, Turbidity, and Apparent Color Removal in Planted (Typha sp. and Eleocharis sp.) and Unplanted Constructed Wetlands
(American Society of Civil Engineers, 2018)Constructed wetlands (CWs) are wastewater treatment ecotechnologies which use plants as a source of pollutants removal in the system. In these systems, the root zone acts in pollutant removal, interacting with the support ... -
Chemical Composition of Rock Salt Brine Compared with Brine from Oil and Gas Wells
(American Society of Civil Engineers, 2018)The overall mass of sodium chloride salt used to treat icy roads can be significantly reduced by pretreating roads or prewetting dry rock salt with concentrated brine solutions. Brine solutions can be made from rock salt; ...