نشریه کاربرد شیمی در محیط زیست
پیاپی 25 (زمستان 1394)

A small amount of nanoparticles those are uniform and stable when suspended in base fluid, thermal properties and dramatically expand the base fluid. Lubricants, hydraulic fluids used. The nanoparticles are made of various materials, for example, can be named the following materials: ceramic oxide, nitride ceramics, carbide ceramics, metals and synthetic materials such as alloy nanoparticles and nanofluids combination of solid-liquid in which metallic or nonmetallic nanoparticles. Too fine suspended particles alters the mobility features are the ability to increase heat transfer and heat transfer nanofluids show. According to previous research carried out, nano-fluid for increasing the thermo-physical properties is considered. Properties such as thermal conductivity, heat dissipation, viscosity and heat transfer coefficient compared to the base fluid displacement such as water and oil increases. Here the influence of several factors such as particle size, particle shape, particle type, operating temperature coefficient of thermal conductivity in particle concentrations also have been studied for the we review.

Isoxazole and isoxazolines are very useful heterocycles in organic medicinal chemistry .
Isoxazoline rings have been used by organic chemists for synthetic manipulation to aceess complex molecular architectures. drugs such as Isocarboxazid , valdecoxib , oxacillin, leftunomide and micafiungin are the examples to substantiate the pharmaceutical acceptance of such heterocyclic systems. [1]
This research work describes the synthesis of new compound of isoxazole family. First 4-nitro benzaldehyde (1) was transformed to 4-nitro benzaldoxime (2) by using NH2OH in pyridine . The in situ generated nitriloxide from reaction between (2) and NaOCl, was reacted with propargylalcohol in the presence of TiO2 nano particles By the increasing of nano particles the yield of compounds was increased .
The structure of all the synthesised compounds was characterized and confirmed by FT-IR and NMR spectroscopy techniques.

The Anionicdetergents are synthetic organic chemicals used in high volumes in household cleaning products. Alkyle benzene Solfunate(LAS), detergents,is one of the most widely employed anionic surfactants due to excellent cleaning properties. LAS can be toxic to aquatic organisms. LAS can also bio-accumulated in some fish,and eventually spreed through ecosystems via the food chain thus it should be removed from water. photo catalyst degradatinon process is one the developing technologies in removal of organic materials from water and wastewater. The aim of this study was the applicability of photodegradations of anionic detergent by use of TiO2 nanoparticles and their chang in to the nontoxic materials such as H2O and CO2 in a slurry reactor. in this study LAS solution (10mg/l)was prepared and in seprated stages was exposed to UV and TiO2 and a combination of them. also the effect of initial LAS concentration,TiO2 loading,pH,various type of UV irradiatin on degradation rate was studied. Maximum degradation was obtained at acidic pH,50 mg/l of TiO2, 30 min irradiation time, it is also showd that 99.5% of LAS was degradated in optimal codition. Kinetics analysis indicades that photocatalytic degradation rates of LAS can be approximated by pseudo-first order model. The mineralization of LAS is reported by measuring the initial and final COD of illuminated solution. Based on the results, UV/TiO2 process may be effectively applied in LAS removal in low concentration and For high concentration is not economically efficient.

Artemisia absinthium belongs to the Asteraceae sub family of Asteroideae family. Up to now many reports has proven the presence of Sesquiterpenes, phenolic compounds in the genus Artemisia. The most important mentioned effect of Herbal medicine has been used in traditional medicine to ward off intestinal worms. Wormwood or wormwood (Artemisia absinthium L, wormwood) is a herbaceous plant, perennial, 50-100 cm in height. Other names Absinthium, Kharagosh, growing wild, is known Marwa and wormwood. The aim of this study was to evaluate the flavonoid content of the hydroalcoholic (methanol %80), methanol and ethyl acetate extract of A. absinthium and comparing them with each other. The Total flavonoid content (TFC) was determined using spectrophotometer methods in the presence of catechin as standard. The result showed that the Total phenolic content of the ethylacetate extract was determined 263.6 ± 0.0002 mg catechin equivalent/g more than hydroalcoholic extract 171.488  0.00 mg catechin equivalent/g and The hydroalcoholic extract more from the methanol extract was 116.26 ± 0.0009 mg catechin equivalent/g.

Regarding the high water application in the life and its importance in environmental, nowadays water treatment is one of the most important issues. There are a lot of ways for water purification like using filter, biological treatment, coagulation… Using coagulants is one the best ways in this aim. Usually in sedimentation, gravity force is being used. Coagulation is the sedimentation method by using some chemicals. There are varieties of coagulants: organic, non organic… In this research we have tested none organic ones, like Poly Chloride Aluminum, Poly Chloride Aluminum Sulfate, Chloride Ferric and Aluminum Sulfate. In comparison, Poly Chloride Aluminum Sulfate has the minimum consumption and settling time. Result shows with having the same concentration of coagulant, Poly Chloride Aluminum Sulfate has the maximum rate of coagulation.

Production and saving energy and protecting the environment are key parameters in the world. We have a significant amount of recycled gases in the atmosphere to burn or to be sent to flares. A significant proportion sent to flare gases, compounds such as natural gas, ethylene, propylene, four sections carbon and hydrogen that are economically valuable. The rational use of energy in industry, is regarded as a necessity and refinery industry as one of the major consumers of energy and high cost of energy is spent. In further contrast to the industrial centers in the field of culture is taking to reform, large amounts of energy are wasted through Flaring if using the technology of power generation can be flaring gas refineries and electric energy produced in this way. In this way not only optimize energy consumption pattern, but also in power sector reform model will be produced. In this paper, using software to simulate Hysys and economic evaluation of power-generating units to 8.176 million cubic feet per day of gas stream flow has been assigned the result is the production of 35 megawatts of electricity.

Reuse of treated wastewater instead of fresh water for agricultural irrigation is far cheaper than the desalination of sea water is salty. The problem in Iran is that in many places where people are facing a shortage of fresh water can be used in the consumption of fresh water for agricultural drought stress save. Most of the organic matter in the wastewater can be treated, but the number of materials using common processes, we are not treated or treated are small, is growing. Pollutants such as azo dyes, the largest group of coloring matter in the form of textile industry, in addition to the material in various processes such as hydrolysis, oxidation and other chemical reactions to become one of the aromatic amines are carcinogenic agents. Five advanced oxidation method used for production of OH radicals, ultraviolet light use of energy and consisting of ozone/ radiation UV UV)/O3), hydrogen peroxide and radiation UV (H2O2/UV), photo-Fenton/systems like Fenton, ozone and hydrogen peroxide and radiation, UV (UV/H2O2/O3) and photocatalytic oxidation (TiO2/UV), respectively. Clear and effective methods of electrochemical techniques, which directly (Anodic oxidation), or indirectly through Fenton's reagent (electronfenton), hydroxyl radicals to produce the product. Each of these processes has advantages and disadvantages which are set according to the type and nature of the contamination, we can chose the best mechanism to eliminate. The results have shown that applying a combination of two or more methods of advanced oxidation processes for contaminant removal efficiency than by using any of them (alone).

In this study, using a reactor Air Lift is a residence of tourism as a simulated model. The reactor can be used in the liquid phase of CMC and water-soluble or water and alcohol solution used in this simulation This article is pure water. In general, the application of empirical equations converge to a reactor and the use of various types of Air Lift relations neural networks have been prepared by and is accountable to any other solution. A comparison between the original model and simulation models for a variety of nozzles single-input, multiple-input multiple-input 1 and 2 have been made. Results showed implied by such tourist resort of wastewater treatment could reduce production costs in space and energy consumption residence ranging from power-save water and other factorsKeywords: Pyridine-2, 6-Dicarboxylic Acid, Tris(2-Aminoethyl) Amine, Metal (II) Complex, Antimicrobial Activity.