Use of industrial by-products to sorb and retain phosphorus

C. J. Penn, R. B. Bryant, M. P. Callahan, J. M. Mcgrath

Research output: Contribution to journalArticlepeer-review

56 Scopus citations


The potential of six industrial by-products for use as phosphorus-sorbing materials (PSMs) in solutions was evaluated. These included two different acid mine drainage treatment residuals (AMDR1 and AMDR2), water treatment residual (WTR), fly ash, bauxite mining residual, and flue gas desulfurization product (FGD). Characterization of the by-products and their mechanisms for sorption and retention of inorganic phosphorus (P) from solution identified those PSMs that sorbed primarily by an iron and aluminum (Fe/Al) mechanism, those that sorbed primarily by a calcium and magnesium (Ca/Mg) mechanism, and those that sorbed by both mechanisms. Degree of P sorption and associated mechanisms were strongly influenced by the pH, buffer capacity, ionic strength, and common ion effects.

Original languageEnglish
Pages (from-to)633-644
Number of pages12
JournalCommunications in Soil Science and Plant Analysis
Issue number6
StatePublished - Jan 2011


  • Industrial by-products
  • Phosphorus
  • Sorption
  • Water quality

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Soil Science


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