Cr(VI) is a highly toxic metal ion and considered a priority pollutant released from various chemical industries. Treatment methods to remove Cr(VI) from water and wastewater include chemical precipitation, ion exchange, membrane separation, electro-coagulation and reduction. These methods are not economically viable for large scale treatment of wastewater that is rich in Cr(VI). Adsorption is ...

AFMU 5-acetylamino-6-formylamino3-methyluracil ACD Allergic contact dermatitis ACE Angiotensin-converting enzyme AD Atopic dermatitis Ala Alanin Au Gold CA Contact allergy CD Cluster of differentiation CI Confidence interval Cr Chromate CYP Cytochrome P D Deletion DC Dendritic cell DNCB 2,4 dinitrochlorobenzene DTH Delayed-type hypersensitivity DZ Dizygote FLG Filaggrin GST Glutathione S-transf...

We prove that the first positive eigenvalue, normalized by the volume, of the sub-Laplacian associated with a strictly pseudoconvex pseudo-Hermitian structure θ on the CR sphere S ⊂ C, achieves its maximum when θ is the standard contact form.

The effects ofNicardipine. a Ca++ channel blocker. on vasoconstriction of rabbit basilar artery in two different conditions. one with a dot contacting the wall of the artery and the other without. were investigated in this study. The Initial diameters of the basilar arteries were measured in all groups. When intradsternal blood was applied. They were found to be 0.}5+0.09 mm in the dotremovalgr...

We study the behavior of the eigenvalues of a sublaplacian ∆b on a compact strictly pseudoconvex CR manifold M, as functions on the set P+ of positively oriented contact forms on M by endowing P+ with a natural metric topology.

Water is second most essential for human being. Contamination of water makes it unsuitable for human consumption. Chromium ion is released to water bodies from various industries having high toxicity which affects the biota life in these waters. In this study aluminum oxide hydroxide was tested for its efficiency to remove trivalent chromium from aqueous solutions through batch mode experiments...

BACKGROUND Approximately 1-3% of the adult population in Europe are allergic to chromium (Cr). A new restriction in Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) based on the ISO 17075 standard has recently been adopted in the EU to limit Cr(VI) in consumer and occupational leather products to < 3 mg/kg. OBJECTIVES To investigate the influence of storage conditi...

This study provides a survey on potential Cr(VI) exposure attributed to drinking water in Greece. For this reason, a wide sampling and chemical analysis of tap waters from around 600 sites, supplied by groundwater resources, was conducted focusing on areas in which the geological substrate is predominated by ultramafic minerals. Results indicate that although violations of the current chromium ...

The adsorption capacity of hebba clay and activated carbon towards (Fe 3+ , Cu 2+ , Zn 2+ , Pb 2+ , Cr 3+ , Cd 2+ ) metal ions was studied. The adsorption capacity was investigated by batch experiment. The effect of weight of hebba was studied and the results showed that the removal percentages increased as the weight of sorbent increased. The effect of contact time was also studied and the res...

S. Ponmani and C. Udayasoorian Abstract -A new class of nano scale zero valent iron (nZVI) particles supported on activated carbon (AC) were synthesized and the feasibility of using nanocomposite (AC+nZVI) for the removal of Cr(VI) in water was investigated through laboratory batch test. Nanocomposite was synthesized by impregnating carbon with ferrous sulfate followed by chemical reduction wit...