Author: Zhongbao LiuPublisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Sorption of nonionic surfactants onto soil and solubilization of polycyclic aromatic hydrocarbon compounds
Enhancement of Solubilization and Sorption Behaviors of Polycyclic Aromatic Hydrocarbons Through Involvement of Gemini Surfactants in Soil-Water Systems
Author: Jia WeiSolubilization and biodegradation of polycyclic aromatic hydrocarbon compounds in soil-water suspensions with surfactants
Author: Shonali LahaEnhanced Solubilization of Two Polycyclic Aromatic Hydrocarbons from an Aquifer Soil Using Nonionic Surfactants
Author: Kathleen DonovanSurfactant Solubilization and Biodegradation of Polycyclic Aromatic Hydrocarbon Compounds in Soil/aqueous and Aqueous Systems
Author: Zhongbao LiuSelective Sorption of Polydisperse Ethoxylated Nonionic Surfactants to Aquifer Materials
Author: Tohren Christopher Garett KibbeyPublisher:
ISBN:
Category :
Languages : en
Pages : 380
Book Description
Surfactant-Enhanced In Situ Biodegradation of Strongly Sorbing Organic Substances in Soil Environments
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 62
Book Description
Low-solubility Polycyclic Aromatic Hydrocarbons such as phenanthrene are easily biodegradable but due to sorption onto soil or/or their presence in a non-aqueous phase, their bioavailability is greatly reduced. In an aqueous environment where surfactants exist above their critical micelle concentration hydrophobic contaminant will partitioning into the hydrophobic core of the micelle. This enhances the apparent solubility of these hydrocarbons and therefore also their desorption from soils. Conceivably, in the absence of any inhibitory effects, such surfactants may enhance the biodegradation of the hydrocarbon. Through a set of screening experiments a group of non-ionic surfactants were identified which do not inhibit the bacterial degradation of the phenanthrene. A mathematical model was formulated to describe the interaction of the biomass-contaminant-water-surfactant system. The model assumes that the surfactant affects the solubility of phenanthrene and does not affect the biochemical characteristics of the biomass. An effective bioavailable concentration was defined. The model predicts experimental data well indicating that a part of the phenanthrene in the micelle phase can be degraded simultaneously with the phenanthrene in the aqueous phase. (jg) p.2.
Selected Water Resources Abstracts
Author: The Potential for Solubilizing Agents to Enhance the Remediation of Hydrophobic Organic Solutes in Soil-water Suspensions. [Quarterly Report].
![The Potential for Solubilizing Agents to Enhance the Remediation of Hydrophobic Organic Solutes in Soil-water Suspensions. [Quarterly Report]. PDF](https://books.google.com/books/content/images/frontcover/Waw_nQAACAAJ?fife=w80-h100)
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 16
Book Description
This paper discusses the feasibility for use of surfactant solubilizing agents to enhance the solubility and the rate of microbial degradation of hydrophobic organic solutes in soil-water suspensions. Hydrophobic organic contaminants are strongly sorbed to soil or sediment material, and as a consequence the rate of microbial degradation may depend greatly on the desorption of the sorbed-phase contaminant and the accessibility of the contaminant to soil microorganisms. Chemical solubilizing agents may enhance the rate of hydrophobic organic solute degradation by increasing the rate of solute desorption from soil and the extent of solute partitioning to the aqueous phase. The presentation will review on-going research on: surfactant solubilization of polycyclic aromatic hydrocarbon (PAH) compounds in clean water, and in soil-water suspensions; and experiments to assess if the addition of surfactant to soil-water suspension results in faster rate of mineralization of PAH compounds in soil.
Bioremediation of Chlorinated and Polycyclic Aromatic Hydrocarbon Compounds
Author: Battelle Memorial InPublisher: CRC Press
ISBN: 9780873719834
Category : Science
Languages : en
Pages : 548
Book Description
This timely reference presents the state of the art of the emerging and rapidly changing field of bioremediation of chlorinated solvents, PCBs, and other chlorinated compounds, as well as PAHs, both in situ and on site. This landmark publication reports significant advances in bioremediation, with an emphasis on practical applications and state-of-the-art developments. Laboratory and field-oriented reviews are presented with the objective of tying treatability studies and recent laboratory developments to field applications. No other reference source gives you access to the most current techniques and methods for the bioremediation of chlorinated and polycyclic aromatic hydrocarbon compounds. This book represents the work of leading experts in the fields of in situ and on-site bioremediation from North America, Europe, and Asia. The chapters include current field applications and laboratory studies undertaken, in some cases, in countries with regulatory standards more stringent than those of the United States.