Synthesis and characterization of goethite coated with copper oxide and its effect on the removal of aqueous mercury(II) ions

Abstract

This paper has investigated the synthesis and characterization of CuO-coated goethite and its application in the removal of mercury. The presence of CuO coating significantly modified the adsorption pattern of mercury on goethite. The synthesis was carried out in a trimetric manner and characterization was conducted using standard laboratory procedures. Batch mode technique under reducing conditions at ambient temperature was used to determine mercury adsorption on CuO-coated goethite. Reaction mechanism indicated a less than one proton coefficient (0.68), an intraparticle diffusion that was controlled by boundary layer, an intercept C equals to 444.45, =0 and mass transfer rates (8.752 -6 cm h -1 and 7.216 -7 cm h -1 ) higher than those of previous studies. ARTICLE HISTORY

Swelling Characteristics of Clay Minerals According to the Ionic Strength in Pore Water

“…3. 팽창 실험 장비 및 방법 , 2006;POSIVA, 2007;Egirani et al, 2018;Zimmermann et al, 2019). XRD 분석 결과 카올리나이트와 일라이트는 Muscovite와 Alpha-SiO 2 로 구성되어 있음을 확인하였다.…”

Synergistic sorption/photo-Fenton removal of typical substituted and parent polycyclic aromatic hydrocarbons from coking wastewater over CuO-Montmorillonite

“…Photocatalysis could be used during tertiary treatment in WWTP. CuO-montmorillonite based materials have been found to be effective for (photo)-catalytic or/and adsorption of different pollutants such as mercury [38,39], lead [40], microorganisms [41][42][43], anthracene [39] dyes [44,45], monocrotophos [46], sulfur mustard [47] and dichlorvos [48]. In the present study, the photocatalytic system in terms of CuO-montmorillonite/H2O2/solar light was used to treat coking wastewater which contains 34 mixed PAHs and SPAHs toxic compounds.…”