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Biosorption of Metal Contaminants Using Immobilized Biomass: A Laboratory Study.

PB92177385

Publication Date	1991
Personal Author	Jeffers, T. H.; Ferguson, C. R.; Bennett, P. G.
Page Count	15
Abstract	The U.S. Bureau of Mines has developed porous beads containing immobilized biological materials for removing metal contaminants from waste waters. The beads, designated as BIO-FIX beads, are prepared by blending biomass, such as sphagnum peat moss or algae, into a polymer solution and spraying the mixture into water. Laboratory studies were conducted to determine bead sorption and elution characteristics. Batch and continuous tests demonstrated that BIO-FIX beads sorbed arsenic, cadmium, lead, and other toxic metals from acid mine drainage waters collected from several sites. Selectivity for heavy and toxic metal ions over calcium and magnesium was demonstrated. The beads exhibited excellent metal sorption and handling characteristics in stirred tanks, column contactors, and a low-maintenance passive system. The sorption process was reversible, and metal ions were eluted from the beads using dilute mineral acids. Cyclic tests indicated that the beads continued to extract metal ions after repeated loading-elution cycles.
Keywords	Metals Water pollution control Acid mine drainage Biological treatment Sorption Biomass Performance evaluation Kinetics Elution Immobilization Ground water Process charting BIO-FIX beads Polysulfones
Source Agency	Bureau of Mines
NTIS Subject Category	68D - Water Pollution & Control 48A - Mineral Industries
Corporate Authors	Bureau of Mines, Washington, DC.
Supplemental Notes	See also PB83-149377. Library of Congress catalog card no. 90-15066.
Document Type	Technical Report
Title Note	Rept. of investigations/1991.
NTIS Issue Number	199214

Biosorption of Metal Contaminants Using Immobilized Biomass: A Laboratory Study.

Biosorption of Metal Contaminants Using Immobilized Biomass: A Laboratory Study.
PB92177385

Publication Date	1991
Personal Author	Jeffers, T. H.; Ferguson, C. R.; Bennett, P. G.
Page Count	15
Abstract	The U.S. Bureau of Mines has developed porous beads containing immobilized biological materials for removing metal contaminants from waste waters. The beads, designated as BIO-FIX beads, are prepared by blending biomass, such as sphagnum peat moss or algae, into a polymer solution and spraying the mixture into water. Laboratory studies were conducted to determine bead sorption and elution characteristics. Batch and continuous tests demonstrated that BIO-FIX beads sorbed arsenic, cadmium, lead, and other toxic metals from acid mine drainage waters collected from several sites. Selectivity for heavy and toxic metal ions over calcium and magnesium was demonstrated. The beads exhibited excellent metal sorption and handling characteristics in stirred tanks, column contactors, and a low-maintenance passive system. The sorption process was reversible, and metal ions were eluted from the beads using dilute mineral acids. Cyclic tests indicated that the beads continued to extract metal ions after repeated loading-elution cycles.
Keywords	Metals Water pollution control Acid mine drainage Biological treatment Sorption Biomass Performance evaluation Kinetics Elution Immobilization Ground water Process charting BIO-FIX beads Polysulfones
Source Agency	Bureau of Mines
NTIS Subject Category	68D - Water Pollution & Control 48A - Mineral Industries
Corporate Authors	Bureau of Mines, Washington, DC.
Supplemental Notes	See also PB83-149377. Library of Congress catalog card no. 90-15066.
Document Type	Technical Report
Title Note	Rept. of investigations/1991.
NTIS Issue Number	199214