Removal of Cu(II) from aqueous solution in a fluidized-bed reactor

One-step synthesis of Fe3O4/carboxylate-rich carbon composite and its application for Cu(ii) removal

“…Among these heavy metals, bivalent copper (Cu(II)) is a priority pollutant and ingestion of excessive copper may lead to vomiting, cramps, convulsion, and even death. 3 Until now, many technologies have been developed to remove Cu(II) from effluents such as chemical precipitation, 4 ion exchange, 5 membrane filtration, 6 electro-coagulation, 7 and adsorption. 8 Among them, adsorption has been widely used as a simple, economical, and cost-effective technology for the removal of heavy metals from wastewater over the past decade.…”

Removal and recovery of lead in a fluidized-bed reactor by crystallization process

“…As was observed by Lee, et al (2004) in their study in copper removal in a fluidized-bed reactor, copper removal decreased as the hydraulic loading increased caused by the erosion of the granulates in the fluidized bed and the porosity that caused micro-particles to form in the water phase among the fluidized grains. Similarly, Chen and Yu (2000) in their study on lead removal in a fluidized bed seeded with sand crystals observed that higher recirculation ratio essentially washed-out the precipitates originally coated on the surfaces of the grains due to increase in turbulence, leading to concentrations in the effluent.…”

A chelating cellulose adsorbent for the removal of Cu(II) from aqueous solutions

“…On completion of the reaction, the Cell‐ g ‐GMA product was removed and soxhlet extracted with acetone for 12 h to remove any GMA homopolymer. The Cell‐ g ‐GMA was then dried at 60°C under vacuum 1, 2. The cellulose‐ g ‐GMA was then ground up into free fibers and passed through a 500‐μm sieve.…”

“…The properties of copper, which make it suitable for these applications, include high electrical and thermal conductivity, good corrosion resistance, ease of fabrication, and installation, attractive appearance, ready availability, and high recyclability. However, significant copper‐containing waste streams are produced from these industries 1. Copper(II) is known to be one of the most toxic heavy metals to living organisms and it is one of the most widespread heavy metal contaminants of the environment 2…”