Pot-culture experiments were used to examine the individual and combined effects of Cu and Cd pollutants on Trifolium repens L. seedlings, both on their growth and their active oxygen metabolism system, mainly superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activities. The results showed that the negative action took place at low concentrations of Cu (less than 500 ppm) and Cd ...

flocculation processes during estuarine mixing can reduce the elemental concentrations of river water. in the present investigation, natural flocculation processes concept is used to reduce the elemental contents of industrial wastewater. for this purpose, various amounts of saline water were added to an artificial industrial wastewater with known concentrations of heavy metals. the results of ...

a simple, highly sensitive, accurate and selective method for determination of trace amounts of cu2+ in water samples was reported. in this paper, isopropyl 2-[(isopropoxy carbothioyl)disulfanyl]ethanethioate (iide) in order to prepare an effective sorbent for the preconcentration and determination of cu. the sorption capacity of isopropyl 2-[(isopropoxy carbothioyl)disulfanyl]ethanethioate (ii...

A modified strain-induced melting activation (SIMA) process is shown to improve high-temperature formability. The microstructural characteristics of the spheroidized grains of SIMA-processed alloys affect high-temperature formability. The effects of hot extrusion parameters and chemical composition on the evolution of spheroidized grains were investigated using several 6xxx series aluminum allo...

A simple, highly sensitive, accurate and selective method for determination of trace amounts of Cu2+ in water samples was reported. In this paper, Isopropyl 2-[(isopropoxy carbothioyl)disulfanyl]ethanethioate (IIDE) in order to prepare an effective sorbent for the preconcentration and determination of Cu. The sorption capacity of Isopropyl 2-[(isopropoxy carbothioyl)disulfanyl]ethanethioate (II...

Background: Considering the toxic effects of heavy metals and microbial pathogens in industrial wastewaters, it is necessary to treat metal and microbial contaminated wastewater prior to disposal in the environment. The purpose of this study is to assess the removal of heavy metals pollution and microbial contamination from a mixture of municipal and industrial wastewater using membrane biorea...

The formation characteristics of N2O were investigated with respect to copper-functionalized zeolites, i.e., Cu/SSZ-13 (CHA), Cu/ZSM-5 (MFI), and Cu/BEA (BEA) compared the corresponding zeolites in H form as references elucidate effect framework structure, copper addition, water. Temperature-programmed reduction hydrogen showed that CHA has a higher concentration Cu2+ (Z2Cu) MFI BEA. characteri...

the selective reduction of oximes with sodium borohydride (nabh4) in the presence of nano cu and charcoal was investigated. cu nanoparticles are widely used as catalysts; efficacious catalyst: copper and copper alloy nanometer feature high efficacy and selectivity, and can be used as catalyst in some reactions. we have shown that nabh4 in the presence of charcoal is an efficient protocol for th...

Plants of an ecotype of Silene 6ulgaris (Caryophyllaceae) originating from a Cd-Pb-Zn mine at Plombière (Belgium) were grown on 15 polymetallic soils for a full life-cycle to investigate physiological responses which can help explain previously reported disorders in plants. The degree of regulation of the metal concentration in the young seedlings was a very reliable indicator of the subsequent...