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Biosorption of toxic heavy metals Pb(II), Zn(II), Cd (II), Cu(II), Ni(II), Co(II), Hg(II), and Cr(VI) ions from aqueous solutions by loquat bark and leaves was investigated. The effects of pH, contact time, metal ncentration, biosorbent dosage, and temperature on the biosorption process were monitored . The experimental equilibrium biosorption data were analyzed by Langmuir and Freundlich adsorption isotherms. Fourier transform infrared spectrometer (FTIR) analysis confirms that - OH, - NH2, -C-O and -COO groups on loquat bark and leaves are one of the main active groups in metal biosorption...

A simple route was followed for synthesis zinc sulfide (ZnS) and cadmium sulfide (CdS) nanoparticles with different sizes at ambient temperature. Zinc acetate, zinc chloride, cadmium acetate and cadmium nitrate were utilized as a source for zinc and cadmium ions and sodium sulfide as a source of sulfide ions. Liugstrum valgure leaf extract was used as a capping and dispersing agent. The change of particle size, morphologies and crystal structures with the molar ratio of metal to sulfide salt and amount of Ligustrum valgure leaf extract was obtained from scanning electron microscopy (SEM),...