Browsing Journal of Environmental Engineering by Title
Now showing items 1-20 of 6310
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1/8 Factorial Study of Metal Effects on Acid Neutralization by Cement
(American Society of Civil Engineers, 2000)The acid neutralization capacity of a cement/waste product is important because the integrity of the monolithic matrix and contaminant precipitation are dependent on the maintenance of alkaline conditions. A 1/8 fractional ... -
2,4,6 Tri-Chlorophenol Containing Wastewater Treatment Using a Hybrid-Loop Bioreactor System
(American Society of Civil Engineers, 2007)A hybrid-loop bioreactor system consisting of a packed column biofilm and an aerated tank bioreactor with an effluent recycle was used for biological treatment of 2,4,6 tri-chlorophenol (TCP) containing synthetic wastewater. ... -
2,4,6-Trinitrotoluene Transformation Using Spinacia Oleracea: Saturation Kinetics of the Nitrate Reductase Enzyme
(American Society of Civil Engineers, 2005)A series of aqueous phase and soil-slurry phase microcosm studies were conducted on 2,4,6-trinitrotoluene (TNT) to obtain kinetic data for optimizing a treatment protocol using an enzyme extract from spinach ( -
2D Advective-Diffusive Transport of Dissolved Oxygen in Channels
(American Society of Civil Engineers, 1995)A two-dimensional (2D) theoretical analysis of the dissolved-oxygen (DO) concentration in rectangular channels is performed. It was assumed that the dissolved-oxygen concentration was affected by constant longitudinal ... -
3D Numerical Modeling of <i>M<i>ICROCYSTIS<b> Distribution in a Water Reservoir</b></i></i>
(American Society of Civil Engineers, 2000)A 3D computational fluid dynamics program was used to calculate the wind-induced accumulation of phytoplankton in Eglwys Nynydd, a water supply reservoir in Wales. The computational fluid dynamics model solved the Navier-Stokes ... -
A Case Study of Community-Engaged Design: Creating Parametric Insurance to Meet the Safety Needs of Fisherfolk in the Caribbean
(ASCE, 2021-12-22)The creation of the Caribbean Ocean and Aquaculture Sustainability faciliTy (COAST) is used as a case study of community-engaged design addressing safety needs. COAST is a parametric insurance product, sold to national ... -
A Comprehensive Assessment of Technical Impacts and User Experience with Food Waste Grinders in Multiunit Residential Buildings
(American Society of Civil Engineers, 2024)This study investigated the impact of food waste grinder (FWG) use on potable water consumption, wastewater characteristics, solid waste diversion, and resident attitudes in a multiunit residential building (MURB), which ... -
A Comprehensive Study of the Electrochemical Oxidation of Diclofenac Sodium in Reverse-Osmosis Concentrate: Analysis, Reaction Kinetics, and the Effect of Electrolyte Composition
(ASCE, 2022/06/03)Electrochemical oxidation (EO) is the most promising treatment for pharmaceutical removal in an aqueous matrix, though there are limited studies investigating the EO of pharmaceuticals in a real matrix such as reverse ... -
A Critical Look at Rock Filters
(American Society of Civil Engineers, 1988)Rock filters have been used for more than a decade to remove algal cells from the effluents of sewage lagoons. Previous studies have provided estimates of the serviceable life of rock filters as long as 43 and 55 years. ... -
A Factorial Dual-Interval Programming Approach for Planning Municipal Waste Management Systems
(American Society of Civil Engineers, 2016)In this study, a factorial dual-interval programming (FDIP) approach is proposed through integrating factorial analysis and dual-interval linear programming into a general framework. The developed FDIP approach can handle ... -
A Model of Coupled Heat and Moisture Transport in an Annular Clay Barrier
(American Society of Civil Engineers, 2004)The design of repository seals for deeply buried high-level radioactive wastes incorporates densely compacted clayey barriers around metallic waste canisters. In this paper, a mathematical model that is based on conservation ... -
A New Kinetic Model for Ultraviolet Disinfection of Greywater
(American Society of Civil Engineers, 2005)Ultraviolet (UV) disinfection of greywater has a number of advantages for small scale applications, but the UV disinfection efficiency can be impeded by high levels of particulates and chemicals in the greywater, micro-organism ... -
A New Landfill Liner to Reduce Ground-Water Contamination from Heavy Metals
(American Society of Civil Engineers, 1998)A series of permeameters (columns) was used to evaluate the effects of the percolation of water and 1,000 μg/mL of zinc chloride solution through a mixture of montmorillonite clay, sand, and lime. The column test results ... -
A New Two-Parameter Isotherm for Modeling Adsorptive Removal of Water Contaminants
(ASCE, 2023/11/01)The two-parameter Elovich isotherm is increasingly being used to describe the adsorption of water contaminants on solid materials. This isotherm is derived from a modified version of Langmuir’s kinetic theory for saturable ... -
A Novel Current Condition Assessment System for Sustainable Management and Operation of Wastewater Treatment Plants
(American Society of Civil Engineers, 2023/06/01)Wastewater treatment is important in terms of human and environmental health in the urban water management cycle. Appropriate methods should be applied based on accurate data in order to ensure efficiency. This study ... -
A Novel Index Approach for Estimating Soil Contamination in Oil Fields
(American Society of Civil Engineers, 2025)Oil pollution presents a major environmental challenge associated with oil and its derivatives, posing significant threats to contemporary society. The primary issue involves accurately identifying polluted areas, determining ... -
A Pore-Scale Physical Model for Electric Dewatering of Municipal Sludge Based on Fractal Geometry
(American Society of Civil Engineers, 2023/03/01)Water in municipal sludge has an electric double layer (EDL), and can be rapidly removed via electroosmosis. However, the understanding of the physical mechanisms of electroosmosis is limited owing to the complex pore ... -
A Practical Statistical Method to Differentiate Inflow and Infiltration in Sanitary Sewer Systems
(ASCE, 2021-11-12)Besides collecting legitimate wastewater, municipal sanitary sewer systems, even when separated from storm sewer systems, also receive unwanted inflow and infiltration (I/I) that adversely impact their sizing, economics, ... -
A Risk-Based Framework to Evaluate Infrastructure Investment Options for a Water Supply System
(ASCE, 2022/11/01)Increasing water demand due to socio-economic development often requires structure-level interventions, e.g., infrastructure expansion of water supply systems to bridge the gap between demand and water supply. Evaluating ... -
A Simple Infiltration Test for Determination of Permeable Pavement Maintenance Needs
(American Society of Civil Engineers, 2016)Permeable pavements allow stormwater to pass through the pavement surface, filtering out sediment and debris; over time, regular preventative maintenance will be needed to maintain the pavement surface infiltration rate ...