Articles and Case Studies from University of Tehran

On the Seasonal Changes in the Surface Water Chemistry of Museum Lake, Thiruvananthapuram, Kerala, India

The surface water chemistry of Thiruvananthapuram Museum Lake was carried out in the period of February 2013 to January 2014. Correlation study of the parameters and overall CCME WQI (Canadian Council of Ministers of the Environment Water quality ...

Apr. 9, 2016 Anila Ajayan;Ajit Kumar

Determination of total antioxidant capacity of green teas by the ferric reducing/antioxidant power assay

The tea plant (Camellia sinesis L.) is grown in about 30 countries worldwide (Graham, 1992). It grows best in tropical and subtropical areas with adequate rainfall, good drainage, and slightly acidic soil (Graham, 1999). Tea (Camellia sinesis) is ...

May 25, 2008 M. Hajimahmoodi; M. Hanifeh; M. R. Oveisi; N. Sadeghi; B. Jannat

Study on wastewater treatment systems in hospitals of Iran

Water resources shortage is one of the most important issues due to the population growth and ever increasing water demands as well as its conservation. Wastewater treatment can serve as a logical way to recycle water to consumption cycle. Due to ...

May 25, 2008 M. Majlesi Nasr; A. R. Yazdanbakhsh

Evaluation of toxicity of heavy metals for Escherichia coli growth

Iron is an essential nutrient for living agents due to its noticeable activity in electron transport reactions in biological systems, but its insolubility and reactivity lead to problems of poor availability and toxicity, respectively (Andrews, ...

May 21, 2008 N. Kalantari; S. Ghaffari

Removal of lead and chromium from aqueous solution by bacillus circulans biofilm

Contamination of the aquatic environment by heavy metals is a worldwide environmental problem. The pollutants of serious concern include lead, chromium, mercury, uranium, selenium, zinc, arsenic, cadmium, gold, silver, copper and nickel, due to ...

May 21, 2008 A. Khanafari; S. Eshghdoost; A. Mashinchian

House dust mite contamination in hotels and inns in bandar abbas, south of Iran

Mites dwelling in house dusts have become recognized in the past 30 years as the most important source of allergens in human habitations (Mumcuoglu et al., 1999). House dust mites have a worldwide distribution; however there are differences in the ...

May 18, 2008 M. Soleimani; J. Rafinejad

Isolation and characterization of crude oil degrading bacillus spp.

Crude oil continues to be used as the principal source of energy and play an important role in the global environmental pollutant considerations. On the other hand, oil will remain as a major source of energy in the next several decades, because a ...

May 17, 2008 A. Akhavan Sepahi; I. Dejban Golpasha; M. Emami; A. M. Nakhoda

Effects of exposure to portland cement dust on lung function in portland cement factory workers in khash, Iran

Portland cement is a light grey powder produced by crushing and grinding calcareous materials such as limestone, chalk and argillaceous materials such as; clay and shale, as a wet slurry or in a dry state. The mixture is calcined in a rotary kiln ...

May 10, 2008 R. Mirzaee; A. Kebriaei; S. R. Hashemi; M. Sadeghi; M. Shahrakipour

Assessment of groundwater quality in sunamganj of Bangladesh

Huge quantities of groundwater, particularly from the shallow aquifers, are used for irrigation in Bangladesh and in the absence of adequate surface water in the dry season, irrigation becomes heavily dependent on groundwater. The water quality ...

Apr. 28, 2008 F. Raihan; Md. J. B. Alam

Emulsan analysis produced by locally isolated bacteria and acinetobacter calcoaceticus rag-1

Emulsifiers are widely used in industry, e.g., in medical and cosmetic products and in food systems. They can be used as agents to combat oil spills on beaches and in the sea. The materials that are currently in use commercially as emulsifiers are ...

Apr. 3, 2008 M. Mazaheri Assadi; P. Chamanrokh; A. Noohi; S. Yahyai

A mathematical model to predict nickel concentration in karaj river sediments

The contamination of surface waters through human activities has been increased over the past years as population density has increased. To fully understand the anthropogenic impact on an ecosystem, long-term data from chemical, physical and ...

Mar. 12, 2008 A. A. M. Sharif; R. Ramezankhani; M. T. Sadatipour; R. Abdolahzadeh

Photochemical oxidation of reactive blue 19 dye (RB19) in textile wastewater by uv/K2S2O8 process

In textile industry the process of dyeing results in the production of large amounts of wastewater exhibiting intense coloration that has to be eliminated before release into natural water streams (Mohorèiè eli at., 2006). Wastewaters from textile ...

Mar. 11, 2008 A. Rezaee; M. T. Ghaneian; A. Khavanin; S. J. Hashemian; Gh. Moussavi; Gh. Ghanizadeh; E. Hajizadeh

Assessment of medical waste management in educational hospitals of Tehran University

Medical waste includes materials that are produced in the course of health protection, medical treatment and scientific research; it forms a separate category of medical or health care waste (Republic of Croatia, 1996b and 2004; Capak, 2001; Ropeik ...

Mar. 10, 2008 M. H. Dehghani; K. Azam; F. Changani; E. Dehghani Fard

Assessment of bagging operators exposure to with pvc airborne particulates

The hazard potential of airborne particles is dependent on the mass concentration as well as the particle size. Particle size determines the deposition site within the respiratory tract and the subsequent health effects. Particle-size is considered ...

Mar. 9, 2008 H. Asilian; M. Nasseri Nejad; S. B. Mortazavi; M. J. Jafari; A. Khavanin; A. R. Dehdashti

Sequencing batch reactor: a promising technology in wastewater treatment

In recent years, sequencing batch reactor (SBR) has been employed as an efficient technology for wastewater treatment, especially for domestic wastewaters, because of its simple configuration (all necessary processes are taking place time- sequenced ...

Mar. 8, 2008 A. H. Mahvi

Application of impregnated almond shell activated carbon by zinc and zinc sulfate for nitrate removal from water

Nitrate is a wide spread contaminant in both ground and surface water due to excessive use of nitrogenous fertilizers in agricultural activities and disposal of untreated sanitary and industrial wastes (Hudak,2000 ; Almasri and Kaluarachchi,2004). ...

Mar. 3, 2008 A. Rezaee; H. Godini; S. Dehestani; A. Khavanin

Heat exposure assessment in the working environment of a glass manufacturing unit

Working in hot environments can produce a strain on workers that may lead to discomfort, loss in performance and productivity, heat illness and death. For this reason there has been much research into human responses to hot environments. Although ...

Mar. 3, 2008 M. Pourmahabadian; M. Adelkhah; K. Azam

Evaluation of the biosolids compost maturity in south Isfahan wastewater treatment plant

As a promising alternative for biosolids disposal, land application of composted biosolids has increased in the past decade (Goldstein and Steuteville, 1996). One of the important factors affecting the successful use of biosolids compost for ...

Feb. 26, 2008 H. Alidadi; A. Parvaresh; M. R. Shahmansouri; H. Pourmoghadas

Exposure to ethylene glycol monobutyl ether and related workers habits in an ink factory

Ethylene glycol monobutyl ether (EGBE), one of the ethylene glycol ethers (EGEs), is often used as a solvent in surface coatings such as spray lacquers, quick-dry lacquers, enamels, varnishes, varnish removers, latex paint and printing inks; is also ...

Dec. 28, 2007 F. H. Chang; W. C. Lin; H. Y. Chang

Removal of chromate ion from contaminated synthetic water using mcm-41/zsm-5 composite

The increasing contamination of urban and industrial wastewater by toxic metal ions is a worrying environmental problem. These inorganic micro-pollutants are of considerable concern because they are non-biodegradable, highly toxic and have a ...

Dec. 28, 2007 H. Kazemian; M. H. Mallah

University of Tehran Articles