background: natural organic compounds are known as precursors in the formation of disinfection byproducts. the aim of this study was to evaluate of effect of modified cationic surfactant nano zeolite in the removal of humic acid (ha) from water. materials and methods: nano zeolite (clinoptilolite) was modified by cationic surfactant solution hexadecyltrimethylammonium bromide (hdtma-br), in dos...

Photocatalytic oxidation of the sulfur-containing compounds, trimethylene sulfide (C3H6S), propylene sulfide (C3H6S), thiophene (C4H4S), and methyl disulfide (C2H6S2), was carried out using an annular plug flow reactor with TiO2 in a supported form. Formation of products and byproducts was monitored in real time using a mass spectrometry online system. Mineralization of the sulfur-containing co...

The Faile growth method, when used with purified mercuric iodide (HgI2), along with low molecular weight polyethylene, has yielded tetragonal prismatic HgI2 crystals. Thermal desorption-gas chromatography/mass spectroscopy (TD-GC/MS) studies reveal the existence of alkanes and ketones in the growth ampoules along with low molecular weight polyethylene, presumably decomposition byproducts from, ...

Land disposal of poultry litter is an environmental concern often associated to excess phosphorus (P) in soils and potential water pollution in regions with intense poultry production. Although poultry litter can be moved off the farm and traded as fertilizer, its transportation becomes less economical with increasing distances from the farm. Thus, new litter management alternatives are needed ...

Byproducts derived from the agricultural industry and food processing, such as seeds skin or husks, have become important due to environmental sustainability their value-added potential. Maqui (Aristotelia chilensis (Mol.) Stuntz) is a native Chilean wild tree that has several beneficial properties its high content of anthocyanins, anthocyanidins, phenolic acids, tannins, fiber. The present stu...

Abstract A trial was conducted to test the effect of partial replacement fishmeal by two brewery industry byproducts, yeast and spent grain, included in isoproteic (41% CP) isolipidic (22% CL) diets for gilthead sea bream (Sparus aurata) rainbow trout (Oncorhyncus mykiss), having mind availability these byproducts. first step before an ingredient is a commercial feed evaluate nutritional qualit...

sweet sorghum that is adapted to the country hot and dry climatic condition, was selected as a raw material for biofuel and biogas production. bioethanol is produced from sweet sorghum stalks and grains and biogas is produced from its byproducts. the purpose of this study was to plant sweet sorghum irrigated with different qualities of water in order to produce biofuels. this experiment was con...

Microbially induced carbonate precipitation (MICP), an emerging technology for soil improvement, also may be used to sequester (biomineralize) radionuclides and metal contaminants (e.g., 90 Sr 2+ , Cd 2+ ) in groundwater, a significant problem at some U.S. Department of Energy sites. Previous work using the bacterium Bacillus pasteurii suggests that in-situ sequestration of these contaminants c...

The aim of this study was focused on optimization of enzymatic hydrolysis conditions for the production of iron-binding peptides from marine mackerel processing byproducts. The marine mackerel processing byproducts protein were hydrolyzed using trypsin, Protamex, Flavourzyme, Alcalase and Neutrase. Alcalase and Protamex proteolytic hydrolysates exhibited the highest iron-binding capacity; howev...

The influence of copper promoters and reaction conditions on the formation of alcohols byproducts of a common Fischer-Tropsch synthesis used iron-based catalysts were investigated. A good compromise of 28%Cu/FeKLaSiO2 can lead to the optimization of an improved Fischer-Tropsch catalyst. The product distribution shifts towards hydrocarbons with increasing the reaction temperature, while pressure...