Irreversible adsorption of naphthalene and tetrachlorobiphenyl to Lula and surrogate sediments

Article Abstract:

The desorption irreversibility of naphthalenes and tetrachlorobiphenyl have no significant effects on the solution phase concentration of the two compounds because the process is not facilitated through a diffusion-limited transport. The diffusion-limited process, a mechanism cited as the major cause of low-level residual desorption, is exhibited only by surrogate materials which manifest homogenous and nonporous characteristics during organic composition.

Soil absorption and adsorption, Absorption, Soil science

---

Development of a surrogate sediment to study the mechanisms responsible for adsorption/desorption hysteresis

Article Abstract:

A surrogate sediment is developed and evaluated to study the mechanisms involved in adsorption/desorption of contaminants. Verification of the surrogate sediment revealed that both it and the natural sediment displayed similar desorption behavior. It was also observed that the surrogate exhibited adsorption of contaminants through a hydrophobic interaction in the same magnitude as a natural sediment for two different hydrophobic organic contaminants.

Adsorption, Thermal desorption, Sedimentation and deposition, Deposition (Geology)

---

Reaction of naphthalene and its derivatives with hydroxyl radicals in the gs phase

Article Abstract:

The presence of pollutants such as polycyclic aromatic hydrocarbons (PAHs) and the byproducts from the reaction of naphthalene with hydroxyl radicals were assessed in a survey of the Canadian atmosphere. Controlled tests were conducted inside a 9.3 cubic meter smog chamber using photolysis of alkyl nitrites to produce the hydroxyl radical (.OH). Results indicate that naphthalene can produce mutagenic nitro derivatives through reactions with OH.

Research and Development in the Physical, Engineering, and Life Sciences, Industrial Organic Chemicals, Air Pollution Control R&D, Cyclic Crude and Intermediate Manufacturing, Aromatic Hydrocarbons, Canada, Air pollution research, Pollution control research, Polycyclic aromatic hydrocarbons, Hydroxylation, Smog

Similar abstracts:

• Abstracts: Historical input and degradation of toxaphene in Lake Ontario sediment. Is the Hyde Park Dump, near the Niagara River, still affecting the sediment of Lake Ontario?
• Abstracts: Biodegradation of naphthalene from coal tar and heptamethylnonane in mixed batch systems. Chemical characterization of coal tar-water interfacial films
• Abstracts: Biodegradation of naphthalene from coal tar and heptamethylnonane in mixed batch systems. part 2 Mass transfer and bioavailability of PAH compounds in coal tar NAPL-slurry systems. 1. model development
• Abstracts: Enhanced solubilization and destruction of tetrachloroethylene by hydroxypropyl-beta-cyclodextrin and iron. Numerical simulation of surfactant-enhanced solubilization of pooled DNAPL
• Abstracts: Kinetics of mercury(II) adsorption and desorption on soil. Slow sorption kinetics of pentachlorophenol on soil: concentration effects

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.