Track topics on Twitter Track topics that are important to you
In situ delivery of liquid reagents in vadose zone is limited by soil anisotropy and gravity. The enhanced delivery of persulfate (PS) as oxidant, using a new foam-based method (F-PS) was compared at bench-scale to traditional water-based (W-PS) and surfactant solution-based (S-PS) deliveries. The goal was to distribute PS uniformly in coal tar-contaminated unsaturated and anisotropic soils, both in terms of permeability and contamination. Water was the less efficiently delivered fluid because of the hydrophobicity of the contaminated soils. Surfactant enhanced PS-distribution into contaminated zones by reducing interfacial tension and inverting soil wettability. Regardless of coal tar contamination contrasts (0 vs. 5 and 1 vs. 10 g kg ) or strong permeability contrasts, PS-solution injection after foam injection led to the most uniform reagents delivery. While PS-concentration varied more than 5-times between zones using W-PS and S-PS methods, it varied less than 1.6-times when the F-PS one was used. Finally, despite unfavorable conditions, the foam-based method did not show any detrimental effect regarding the oxidation of hydrocarbons compared to the W-PS and S-PS methods carried out in ideal conditions. Moreover, hydrocarbon degradation rates were slightly higher when using F-PS than S-PS due to a lower surfactant content in the targeted zone.
This article was published in the following journal.
Soil, exposed to petroleum oil contaminants (in the form of petrol, diesel, gasoline, crude oil, used motor oil), may cause potential damage to the environment, animal and human health. In this review...
Stable surfactant foam might play a vital role in the effective remediation of diesel oil contaminated soil-a major environmental hazard. This paper, first of its kind, is reporting the remediation of...
Fluidization of carrier media for biofilm support and growth defines the moving bed biofilm reactor (MBBR) process. Major MBBR facilities apply virgin polyethylene (PE)-based circular plastic carrier ...
There are various treatments available for soil decontamination, including physical, chemical, thermal and biological treatments. However, when pollutants are persistent or toxic, it is often necessar...
Calcipotriol plus betamethasone dipropionate aerosol foam versus apremilast, methotrexate, acitretin, or fumaric acid esters for the treatment of plaque psoriasis: A matching-adjusted indirect comparison.
Plaque psoriasis has significant impact on patients' quality of life. Topical therapy is considered the treatment mainstay for mild-to-moderate disease according to guidelines. Calcipotriol/betamethas...
Pityrosporum folliculitis presents as fine superficial follicular pustules and papules on the trunk and upper extremities. Ketoconazole 2% foam was recently approved for the treatment of s...
The purpose of this study is to evaluate the potential of Tazarotene Foam to induce a phototoxic reaction when exposed to UV and VIS light on skin of healthy volunteers.
A Phase III, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group, Multiple-Site Study to Evaluate the Therapeutic Equivalence of a Generic Calcipotriene and Betamethasone Dipropio...
Calcipotriene is a vitamin D3 analog that has been used as topical therapy in adult subjects with plaque-type psoriasis since 1993. Calcipotriene foam, 0.005%, was approved in 2010 for the...
To survey rosacea patients about their concerns, treatment satisfaction, and quality of life associated with their Finacea Foam treatment
A dental health survey developed to evaluate a patient's orthodontic treatment need and priority for orthodontic care. The index is based on an assessment of degree of MALOCCLUSION and the potential aesthetic and dental health benefit of the treatment under consideration.
A scale comprising 18 symptom constructs chosen to represent relatively independent dimensions of manifest psychopathology. The initial intended use was to provide more efficient assessment of treatment response in clinical psychopharmacology research; however, the scale was readily adapted to other uses. (From Hersen, M. and Bellack, A.S., Dictionary of Behavioral Assessment Techniques, p. 87)
An assessment of a person's personality based on their facial and other external features.
A dry artificial sterile sponge of fibrin prepared by clotting with thrombin a foam or solution of fibrinogen. It is used in conjunction with thrombin as a hemostatic in surgery at sites where bleeding cannot be controlled by more common methods. (From Martindale, The Extra Pharmacopoeia, 30th ed, p648)
A disturbance in the prooxidant-antioxidant balance in favor of the former, leading to potential damage. Indicators of oxidative stress include damaged DNA bases, protein oxidation products, and lipid peroxidation products (Sies, Oxidative Stress, 1991, pxv-xvi).
Food is any substance consumed to provide nutritional support for the body. It is usually of plant or animal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism ...