A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Evaluation of immobilized biomass beads for removing heavy metals from wastewaters
Immobilized biomass beads, which consist of dried and ground sphagnum peat moss immobilized in a porous polysulfone matrix, effectively remove heavy metals from wastewaters under appropriate conditions. This paper examines the procedure for forming the beads and their performance in packed columns. The beads are produced by atomizing an organic dispersion into water, creating droplets that become solid through phase inversion. Increasing the relative biomass content gave slightly lower surface areas. Metal ion break through curves were obtained for metal ions from two actual acid mine drainage wastewaters. The selectivity of the beads for various cations was Fe > Al > Pb > Cu > Cd, Zn > Ca > Mn > Mg > Na. Capacity increases with initial pH of the column after regeneration. Bead titration tests indicate that the immobilized biomass beads have heterogeneous ionogenic adsorption sites. Experimental results also indicate that most of the magnesium removed from water by the immobilized biomass beads is adsorbed and exchangeable with potassium. Under the conditions used here, the immobilized biomass beads have a lower capacity than two commercially available ion exchange resins.
Evaluation of immobilized biomass beads for removing heavy metals from wastewaters
Immobilized biomass beads, which consist of dried and ground sphagnum peat moss immobilized in a porous polysulfone matrix, effectively remove heavy metals from wastewaters under appropriate conditions. This paper examines the procedure for forming the beads and their performance in packed columns. The beads are produced by atomizing an organic dispersion into water, creating droplets that become solid through phase inversion. Increasing the relative biomass content gave slightly lower surface areas. Metal ion break through curves were obtained for metal ions from two actual acid mine drainage wastewaters. The selectivity of the beads for various cations was Fe > Al > Pb > Cu > Cd, Zn > Ca > Mn > Mg > Na. Capacity increases with initial pH of the column after regeneration. Bead titration tests indicate that the immobilized biomass beads have heterogeneous ionogenic adsorption sites. Experimental results also indicate that most of the magnesium removed from water by the immobilized biomass beads is adsorbed and exchangeable with potassium. Under the conditions used here, the immobilized biomass beads have a lower capacity than two commercially available ion exchange resins.
Evaluation of immobilized biomass beads for removing heavy metals from wastewaters
Spinti, Mark (author) / Zhuang, Hanna (author) / Trujillo, Edward M. (author)
Water Environment Research ; 67 ; 943-952
1995-09-01
10 pages
Article (Journal)
Electronic Resource
English
Removing heavy metals from wastewaters with use of shales accompanying the coal beds
| Online Contents | 2015
Heavy metals removal from aqueous solutions and wastewaters by using various byproducts
| Online Contents | 2013
The Utilization of Cherry Wood Sawdust for Heavy Metals Removal from Wastewaters
| Springer Verlag | 2019
Evaluation of Permeable Pavement Systems for Removing Heavy Metals from Stormwater
| DOAJ | 2023