Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Surfactant Solubilization of Polycyclic Aromatic Hydrocarbons from Nonaqueous Phase Liquids
Author: Surfactant Effects on Solubilization, Dissolution and Biodegradation of Polycyclic Aromatic Hydrocarbons from Non-aqueous Phase Liquids
Author: Leticia Alonso BernardezPublisher:
ISBN:
Category :
Languages : en
Pages : 410
Book Description
"The objective of the thesis was to investigate the effects of nonionic surfactants on the dissolution and biodegradation of polycyclic aromatics hydrocarbons (PAHs) from a multicomponent non-aqueous phase liquids (NAPLs)." --
Evaluation of an Alternative Natural Surfactant for Non Aqueous Phase Liquid Remediation
Author: Brian A. BeachPublisher:
ISBN:
Category :
Languages : en
Pages : 42
Book Description
Applications of surfactant technology in the environmental remediation industry can greatly enhance the success of non-aqueous phase liquid (NAPL) remediation. Saponins derived from the bark of the Quillaja soapbark tree were evaluated as an alternative natural surfactant. Properties including the critical micelle concentration, emulsion kinetics and the solubilization enhancement of sixteen PAHs (polycyclic aromatic hydrocarbons) were measured. The critical micelle concentration (CMC) for Quillaja saponin was found to be 60 mg/L. Soil contaminated with NAPL from a former manufactured gas plant was used to evaluate saponin’s ability to enhance the solubilization of PAHs commonly found in NAPL. Although solubilization enhancement was observed for all of the PAHs analyzed, the greatest enhancements occurred for PAHs having a larger number of aromatic rings. The solubilization enhancement data were, in turn, used to quantify the solubilization capacity of saponins and shown to have a strong correlation with the intrinsic properties of the PAHs. A novel determination was made with respect to emulsion kinetics. The optimal resting period determined by this research to maximize the effectiveness of saponins was found to be approximately 14 days. Overall, this research showed that saponins are an effective alternative for NAPL remediation
Mathematical Modeling of the Surfactant-enhanced Dissolution and Biodegradation of Polycyclic Aromatic Hydrocarbons from Non-aqueous Phase Liquids
Author: Vahid ArastehSurfactant Solubilization and Biodegradation of Polycyclic Aromatic Hydrocarbon Compounds in Soil/aqueous and Aqueous Systems
Author: Zhongbao LiuEnhanced Solubilization of Two Polycyclic Aromatic Hydrocarbons from an Aquifer Soil Using Nonionic Surfactants
Author: Kathleen DonovanSolubilization of a Multicomponent Nonaqueous Phase Liquid Using a Nonionic Surfactant
Author: Meng Meng WongSurfactants and Cosolvents for NAPL Remediation A Technology Practices Manual
Author: Donald F. LowePublisher: CRC Press
ISBN: 9780849341175
Category : Science
Languages : en
Pages : 444
Book Description
A $19.3 million Department of Defense grant to Rice University funds the Advanced Applied Technology Demonstration Facility (AATDF). One of the project goals is the development of reduction strategies for nonaqueous phase liquids (NAPLs) in the subsurface. Surfactants and Cosolvents for NAPL Remediation records the results of AATDF research. The manual is a guide to the practical application of surfactants/cosolvent for in situ remediation. It is targeted to decision makers and anyone concerned with the design or implementation of these technologies. The book discusses the situational viability of surfactants/cosolvents , the possible results, design, and operation. It includes case studies, step-by-step guidance, and project cost work sheets. The successful results of the AATDF research, as documented Surfactants and Cosolvents for NAPL Remediation, are an invaluable contribution to the future of subsurface remediation. Without source NAPL reduction, the alternative is decades of plume management through pump-and-treat.
Surfactant-enhanced Solubilization of Polycyclic Aromatic Hydrocarbons Under Acidic Conditions
Author: Tara C. HealyThe Role of Colloidal Systems in Environmental Protection
Author: Monzer FanunPublisher: Elsevier
ISBN: 0444632840
Category : Science
Languages : en
Pages : 715
Book Description
The Role of Colloidal Systems in Environmental Protection describes the importance of colloids in many applications that contribute to environmental protection, including drinking water and wastewater treatment, heavy metal remediation, treatment of radioactive materials, corrosion, and energy conversion. Knowledge of the physical and chemical composition of colloids is important to understand and accurately model the relevant processes. The book familiarizes the reader with the technological features of the application of colloids in environmental protection, and provides chemical engineers, researchers, and scientists in academic and corporate communities with the latest developments in this field. Each chapter covers the whole spectrum of the relevant science, from the fundamentals to applications. - Provides the applied technological features of colloids in environmental protection - Gives insight into the use of bio-solid colloids as contaminant carriers - Covers the natural occurrence of biosurfactants in the environment and their applications - Provides information on the use of nanoparticles for environmental applications - Chapters written by recognized and respected experts in the field from all over the world