نتایج جستجو برای: alkylbenzene
تعداد نتایج: 307 فیلتر نتایج به سال:
Composting is an important waste management strategy, providing economical and environment-friendly approach to sanitizing stabilizing biosolids for land soil amendment. However, the resulting product can contain a large number of organic pollutants that may have adverse effects on ecosystem. This paper presents occurrence eight widely used (four linear alkylbenzene sulfonates (LAS C10-C13), no...
Emerging pollutants have been ubiquitously found in environmental compartments, while there is scarce information about these substances and their effects on health status wild terrestrial mammals. Bat species are very sensitive animals to any changes the environment considered one of best bioindicators quality wildlife. To acquire a better knowledge exposure animals, multiclass method proposed...
A large proportion of extant crude oil is found in carbonate reservoirs worldwide. Alkylbenzene sulfonates are inexpensive anionic surfactants but they cannot be used these due to their incompatibility with divalent ions and high adsorption on the rocks. This paper proposes solution that problem by blending this kind surfactant surface-active ionic liquids. Namely, a formulation containing sodi...
The flowability of spray-dried laundry detergent is important for manufacturing process performance and reliability, product quality; it strongly dependent on formulation. In this work, a detailed study four model formulations provides fundamental understanding the role particle composition, micro-structure, powder flow behaviour. All powders studied contained sodium salt linear alkylbenzene su...
The biodegradability of the principal component of synthetic detergent products known as linear alkylbenzene sulphonate (LAS) has been contentious, hence the need to evaluate its primary biodegradation by indigenous microorganisms in wastewater ecosystem. The native microbial consortium of a wastewater ecosystem found to utilize detergent components were characterized using standard and convent...
The manufacture of concentrated detergent granules in the detergent industry can be achie®ed by the incorporation of surfactant pastes, such as linear alkylbenzene sulfonate ( ) ( paste LAS a lamellar liquid crystalline material surfactant concentration of ca. 78 ) wt. % . LAS paste was processed at 25 C and 60 C, in both the absence and presence ( ) of sodium disilicate Na O:2SiO additi®e, and...
Biotransformations of a series of ortho-, meta- and para-substituted ethylbenzene and propylbenzene substrates have been carried out, using Pseudomonas putida UV4, a source of toluene dioxygenase (TDO). The ortho- and para-substituted alkylbenzene substrates yielded, exclusively, the corresponding enantiopure cis-dihydrodiols of the same absolute configuration. However, the meta isomers, genera...
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