One of the factors that affect leaching process a mineral source is characteristics raw materials. Not all phases can be leached directly and completely. Thus, some minerals require special treatment so take place optimally. This study will focus on studying effect additive compounds addition, i.e. hydrogen peroxide sodium chloride, in spent catalyst using sulfuric acid solution. The was carrie...

In circumstances with wastewater and seawater, the behavior of multi-ions including calcium, chloride others in concrete attracts attention. The present study investigated multiple mechanisms that could happen under special field situation above, calcium leaching, transport multi-ion coupling. To realize interactive ingress multi ions, simulation method for processing individual mutual influenc...

The Jacobsen catalyst, N,N'-bis(3,5-di-tert-butylsalicylidene)-1,2-cyclohexanediaminomanganese (III) chloride is covalently immobilized on mesoporous phenolic resin through a direct and simple procedure. The immobilization is evident from nitrogen sorption and quantitative XRF measurements. A complex loading of 0.09 mmol/g is obtained, corresponding to well dispersed Mn-complexes on the surface...

poly(vinyl chloride) (PVC) plasticized with EDHadEven thoug ther reports had implied that certain formulations of PVC medical tubings (2,3) and containers would, in fact, release plasticizers as well as additives to solutions, little concern had been expressed as to the possible health consequences to humans from leaching of these agents. Since Jaeger and Rubin's publication, however, considera...

A choline chloride-urea (ChCl-urea) deep eutectic solvent (DES) was used to experimentally investigate the secondary recovery of zinc from zinc-bearing dust sludge via a leaching process. The effects varying liquid–solid ratio, temperature, stirring speed, and time on efficiency were determined, optimum values these parameters found be 15:1, 90 °C, 400 rpm, 600 min, respectively, at which 86.87...

Abstract The reduction of clinker use is mandatory to lower the negative environmental impact concrete. In shotcrete mixes, similarly case conventional concrete, supplementary cementitious materials (SCMs) and proper mix design allow for substitution without compromising mechanical properties. However, on durability needs be further assessed understood. results from present study, obtained real...