Highly crystalline Bi3+-doped cadmium oxide (CdO) sub-micron structures were synthesized by calcination the obtained precursor from a sol-gel reaction. The reaction was carried out with cadmium nitrate (Cd(NO3)2.4H2O), bismuth nitrate (Bi(NO3)3.5H2O) and ethylene glycol (C2H6O2) reactan...

Membrane separation is a very well known technology having a large number of applications. Separation of metal ions by selective membrane transport is of great importance from both fundamental and practical viewpoints. According to IUPAC, a membrane is defined as a heterogeneous phase which acts as a barrier to the flow of molecules and ionic species in liquid or vapour phase. Membranes can be ...

A direct spectrophotometric method has been developed for the sequential determination of nitrite and nitrate by flow injection analysis (FIA). The method is based on the reaction of nitrite with safranine O to form a diazonium salt which caused the reddish-orange dye colour of the solution to be changed to blue in acidic media, and which absorbs at 520 nm. The injected sample in the flow injec...

The degradation capacity of a mixed culture of Agrobacterium tumefaciens SUTS 1 and Pseudomonas monteilii SUTS 2 for thiocyanate and metal cyanide, in the form of zinc and cadmium, has been determined. The growth of a mixed culture of SUTS 1 and SUTS 2 in cyanide complexes and the cyanide removal efficiency of a fixed-film bio-column system were studied. The results showed that the mixed cultur...

Different intra- or interspecific wheat show different interactions of Cd/Zn. Normally, Zn has been/being widely utilized to reduce the Cd toxicity. In the present study, the DPW seedlings exhibited strong Cd tolerance. Zn and Cd mutually inhibited their uptake in the roots, showed antagonistic Cd/Zn interactions. However, Zn promoted the Cd transport from the roots to shoots, showed synergisti...

This study was carried out on fish channa punctatus to investigate the lethal concentration of cadmium nitrate at 24 hr. Experiment procedure repeated five times selected concentrations, noting number killed. The mean value taken. These values were taken determine LC50 for Toxicity heavy metals it may be depends upon dose and time exposure period.

Assessments of groundwater pollution parameters were carried out in samples collected from selected shallow hand-dug wells across Ilora township. The analysed nitrate, trace elements including, iron, cobalt, chromium, manganese, zinc, arsenic, cadmium and lead, bacteria count water; using spectrophotometric method, HM Metalyser 5000 multiple tube techniques respectively. pH the was between 6.4 ...