Melanin-embedded materials effectively remove hexavalent chromium (CrVI) from aqueous solution

Melanin-embedded materials effectively remove hexavalent chromium (CrVI) from aqueous solution

BACKGROUND Currently, it is recognized that water polluted with toxic heavy metal ions may cause serious effects on human health. Therefore, the development of new materials for effective removal of heavy metal ions from water is still a widely important area. Melanin is being considered as a potential material for removal of heavy metal from water. METHODS In this study, we synthesized two m...

Occupational Exposure to Hexavalent Chromium (CrVI)

Removal of hexavalent chromium from aqueous solution using canola biomass: Isotherms and kinetics studies

The removing of hexavalent chromium from wastewater or decreasing its chromium (VI) content up to the permitted levels is important due to its non-biodegradation, bioaccumulation, and cancer-causing and toxic effects. In the present study, biosorption of Cr (VI) from aqueous solutions using canola was investigated. The various physicochemical parameters such as pH, initial Cr (VI) ion concentra...

Removal of Hexavalent Chromium from Aqueous Solution Using Activated Carbon Derived from Palmyra Palm Fruit Seed

In this study, removal of chromium(VI) from aqueous solutions by Palmyra palm fruit seed carbon (PPFSC) and commercial activated carbon (CAC) was investigated. The metal adsorption capacity has been studied as a function of contact time, pH and carbon dosage. The adsorption yields increased with the increasing of adsorbent dosage and contact time, and subsequently reached the equilibrium. The s...

Biosorption of Hexavalent Chromium from Aqueous Medium with Opuntia Biomass

The biosorption of hexavalent chromium from aqueous solutions by Opuntia cladodes and ectodermis from cactus fruits was investigated. Both types of biomass are considered low-cost, natural, and ecofriendly biosorbents. Batch experiments were carried out to determine Cr(VI) biosorption capacity and the efficiency of the biosorption process under different pH, initial Cr(VI) concentration, and so...