Biosorption Of Cu(II) And Cd(II) Heavy Metals From Aqueous Solutions By Paprika Waste
Tomasz Kalak , Joanna Dudczak , Ryszard Cierpiszewski , Elwira Szychowiak
AbstractIn this study, the adsorption conditions of Cu(II) and Cd(II) metal ions onto dried paprika residues have been studied. Paprika waste is generated in food industry and it can be used for removing copper Cu(II) and cadmium Cd(II) from wastewater. Paprika is usually consumed as fresh fruit or dried and used as ground and natural flavouring in the food industry, but also as colouring agent for many food products such as spicy culinary, cheese food coatings, meat products, popcorn oil etc. It is also used in pharmaceutical and cosmetic industries. Spice pepper is added to dried soups, cheese, chips and spice mixtures. Paprika is a source of biologically active compounds, such as flavonoids, phenols, carotenoids, capsaicinoids and vitamins. Its fruits contain resins, pentosans, cellulose, protein, pungent principles, colouring pigments, mineral elements and small amounts of volatile oil. Seeds include fixed nonvolatile oil, which consists of triglycerides ( 60%), mainly linoleic acid and other unsaturated fatty acids. All the ingredients exhibit various benefits to human health, antioxidant capacity and other biological activities, but also sorption properties in relation to heavy metal ions. In this research the adsorption of metal ions like Cu(II) and Cd(II) from aqueous solutions at different pH values 2–5 has been investigated. The tests were conducted to study the effects of mass of biosorbent, various metal ion concentration, pH level, contact time, adsorption isotherms of the metals and a maximum loading capacity. The results showed that the copper and cadmium ions were significantly bound by paprika waste, which was also confirmed by FT-IR measurements. The results suggest that paprika waste has possibility to be used as effective adsorbent for copper and cadmium ions removal.
|Publication size in sheets||0.3|
|Book||Juś Krzysztof, Gwiazdowska Daniela, Kluczyńska Katarzyna (eds.): Current trends in commodity science. 13th IComSC'15, 22nd-25th June 2015. Book of abstracts, 2015, University of Economics. Faculty of Commodity Science, ISBN 9788393801862, 158 p.|
|Keywords in Polish||wytłoki papryki, jony metali Cu(II) i Cd(II), usuwanie adsorpcyjne|
|Keywords in English||paprika residues, Cu(II) and Cd(II) metal ions, adsorptive removal|
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