Now showing items 31-40 of 74
Effect of Long-Chain Fatty Acids on Anaerobic Digestion
(Virginia Tech, 2013-09-12)
An investigation was carried out to study whether long-chain fatty acids (LCFAs) have an effect on digestion of waste sludge under anaerobic conditions. Four different kinds of LCFAs were used in this study. The 18 carbon ...
The Feasibility of Bioaugmentation for the Remediation of Chlorinated Solvents: A Microcosm Study
(Virginia Tech, 2005-01-21)
Chlorinated solvents are among the most prevalent contaminants at Superfund sites. Perchloroethylene (PCE) and its degradative byproducts pose a particular problem because of their persistence in the subsurface and their ...
Sequential Anaerobic-Aerobic Digestion: A new process technology for biosolids product quality improvement
(Virginia Tech, 2006-01-30)
Anaerobic digestion is widely used for stabilization of solids in sewage sludges. Recent changes in the priorities and goals of digestion processes are focusing more attention on the efficiency of these processes. Increasing ...
Effect of Digestion Processes on Dewatering and Bound Water Content of Sludge
(Virginia Tech, 2005-02-04)
Solids handling can contribute to a significant portion of the operational costs of a wastewater treatment plant, contributing up to 50% of the total expenses in certain instances. Sludge dewatering and drying therefore ...
Removal of trace elements from coal using a multiple-property processing circuit
(Virginia Tech, 1994-07-15)
<p>The U.S. Environmental Protection Agency is conducting a three-year study of toxic air emissions specific to coal fired utilities to assess the potential health risks of trace elements released during coal combustion. ...
Push-pull Tests to Quantify In-situ Naphthalene Phytoremediation Rates
(Virginia Tech, 2004-01-09)
Ten strategically placed push-pull wells were installed to determine in-situ degradation rates at a creosote contaminated site and to assess the contribution of hybrid poplar trees to polynuclear aromatic hydrocarbon (PAH) ...
Laboratory evaluation of conditioning requirements for sludge dewatering using belt filter press
(Virginia Tech, 1990-12-06)
A Comparative Study of Anaerobic Digestion Processes for Sewage Sludge
(Virginia Tech, 2006-02-07)
The Blue Plains Wastewater Treatment Plant in Washington, D.C. is in the process of updating its anaerobic digesters, with a completion date set for 2008. This research was undertaken to aid designers at Blue Plains by ...
Sorption of pentachlorophenol to humic acids and subsequent effects on biodegradation and solvent extraction
(Virginia Tech, 1992-06-05)
Effect of sugar waste, surfactant waste and paint waste on the degradation of anaerobic bioreactor landfill components
(Virginia Tech, 2007-04-30)
Anaerobic bioreactor landfills are the landfills with an increased moisture content inorder to achieve a better biodegradation. Many Bioreactor landfills accept outside liquid wastes to achieve a higher moisture content . ...