Merck
  • Home
  • Search Results
  • Assessment of Ethidium bromide and Ethidium monoazide bromide removal from aqueous matrices by adsorption on cupric oxide nanoparticles.

Assessment of Ethidium bromide and Ethidium monoazide bromide removal from aqueous matrices by adsorption on cupric oxide nanoparticles.

Ecotoxicology and environmental safety (2014-03-19)
Ali Fakhri
ABSTRACT

The present study was undertaken to develop an effective adsorbent and to study the adsorption of Ethidium bromide and Ethidium monoazide bromide from aqueous solution using the CuO nanoparticles. The characteristics of CuO nanoparticles were determined and found to have a surface area 89.59m(2)/g. Operational parameters such as pH, contact time and adsorbent concentration, initial concentration and temperature were also studied. The amount of removal increases with the increase in pH from one to seven and reaches the maximum when the pH is nine. Adsorption data fitted well with the Langmuir, Freundlich and Florry-Huggins models. The results show that the best fit was achieved with the Langmuir isotherm equation with maximum adsorption capacities of 0.868 and 0.662mg/g for Ethidium bromide and Ethidium monoazide bromide, respectively. The adsorption process was found to follow pseudo-second-order kinetics. The calculated thermodynamic parameters, namely ΔG, ΔH and ΔS showed that adsorption of Ethidium bromide and Ethidium monoazide bromide was spontaneous and endothermic under examined conditions.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
氧化铜, nanopowder, <50 nm particle size (TEM)
Sigma-Aldrich
氧化铜, ACS reagent, ≥99.0%
Sigma-Aldrich
氧化铜, powder, 99.99% trace metals basis
Sigma-Aldrich
氧化铜, powder, <10 μm, 98%
Sigma-Aldrich
氧化铜, needles, mixture of CuO and Cu2O, ACS reagent
Sigma-Aldrich
氧化铜, 99.999% trace metals basis
Sigma-Aldrich
铝基氧化铜, 14-30 mesh, extent of labeling: 13 wt. % loading
Sigma-Aldrich
溴化乙锭单叠氮化物, ≥95% (HPLC), solid
Sigma-Aldrich
氧化铜, powder, 99.995% trace metals basis