Dennis G. GrubbPHD, PE, Vice President for Research, Development and Technical Sales Phoenix Services, LLC
Abstract: Nitrogen and Phosphorus in storm water and agricultural runoff have been implicated as the main cause of algal blooms andassociated water quality issues in the Great Lakes and Chesapeake Bay systems. In conventional water treatment processes, calcium,alum and iron containing compounds are used to sequester phosphorus. As iron-making and steel-making slags are of very highenvironmental quality and are rich in both calcium and iron, there has been considerable attention given to using these media to effectsustainable and recycling-based remediation of phosphorus-impacted waters, whether it be wastewater treatment, low impact design (LID)for passive storm water treatment, etc. Accordingly, Dr. Grubb will provide a lecture on the characteristics of blast furnace slag and steel slag and their ability to remove phosphate from aqueous solutions. This will include recent work conducted in conjunction with permeableparking lots (1-10 mg/L) and the use of steel slags to remove elevated concentrations (up to 100 mg/L) of phosphorus by severalmechanisms.
About the speaker: Dr. Grubb has more than 25 years combined academic, research and engineering consulting experiencein environmental remediation, beneficial use, stabilization/solidification (S/S), environmental forensics and litigation support. Grubb hasover 40 refereed journal publications in these areas. Dr. Grubb is a prior NSF CAREER, NSF-NATO Postdoctoral and FulbrightFellowship awardee and has previously served as an editorial board member for the Journal of Hazardous Materials and ASCEJournals of Geotechnical and Geoenvironmental Engineering and Hazardous, Toxic and Radioactive Waste and was the recipient of the2014 ASCE Samuel Arnold Greeley Award from the American Society of Civil Engineers Environmental and Water Resources Institute(ASCE EWRI). In his current role, Dr. Grubb is responsible for research and development of various beneficial use applications for slagand other mill products on a worldwide basis. In 2015, Dr. Grubb’s team was responsible for the beneficial use of more than 2.6 milliontons of slag materials into various applications in the US.
Host: Dr. Krishna Reddy