Calcium
alginate has been widely used to immobilize activated carbon
(C) [13], carbon nanotubes (C-NT) [14] TiO2 nanoparticles [15], and
magnetite nanoparticles [16]to generate new adsorbents materials
to remove metals, heavy metals and pigments/dyes from aqueous
wastewater.
In the present work, three different adsorbent materials potassium
hydroxide activated carbon from apricot stone, calcium
alginate beads, and calcium alginate/activated carbon composite
beads were used for removal of arsenic. The prepared materials
were characterized by Fourier transformed infrared spectroscopy
(FTIR), N2-adsorption at −196 ◦C and scanning electron microscopy
(SEM). Kinetic studies of adsorption of arsenic from solutions by
using three different adsorbent materials were studied.