Remediation of Heavy Metals Using Insitu Approaches That Combines Multiple Mechanisms
Instructor: Fayaz Lakhwala, Ph.D., Technical Manager, PeroxyChem, LLC
Note: Prior to this course from 8 AM - 10 AM will be another 2 hr. course entitled "ISCO/ISCR Permeable Reactive Barrier (PRBs) to Prevent Migration of Contaminant Plumes" that you must sign-up for separately. See this page for further details and to register: https://www.epoc.org/event-3212216
Continuing Education Credits (CECs):
This is the first offering of this class in CT. The CT State Board of Examiners of Environmental Professionals (LEP Board) has approved this course for 2.0 hours of continuing education credits (CTLEP-461). An application for MA LSP credits has been submitted and if credit is approved we will post here.
Time and Location:
This seminar will be held on Thursday, Feb 14, 2019 and runs from 11 AM - 1 PM at the CTCPA Education Center, 716 Brook St., Ste. 100, Rocky Hill, CT. For directions, see: http://www.ctcpas.org/Content/About/Driving-Directions.aspx
Course Fees:
- EPOC Members: $75
- Non-members: $150 (consider joining EPOC at this time to receive the member rate for this program)
- Gov't Employees/Students: $32.50
Breakfast included.
Course Overview:
Trace metals constitute a significant class of groundwater contaminants originating from mining effluents, industrial wastewater, landfill leachate, agricultural wastes and fertilizers, and fossil fuels. Based on the chemical properties of dissolved species, trace metals can be divided into two distinctive groups: reducible metals and metalloids, which are present in natural waters as anions and oxyanions (e.g.; Cr, As, Se, Mo, U), and metal cations, which occur in aqueous environment as divalent cations (e.g.; Cu, Zn, Cd, Pb, Hg, Ni). Depending on their aqueous form, the mobility of trace metals in groundwater is affected by various chemical reactions, including dissolution-precipitation, oxidation- reduction, adsorption-desorption and complexation. Several different remediation technologies based on those reactions have been implemented for subsurface metal immobilization (e.g.; reactive zones containing zero valent iron (ZVI), organic carbon substrates, zeolite, limestone).
This 2-hour course will be presented as two parts:
Part 1 (1 hour)
- Principles of heavy metal remediation
- Removal Mechanisms: for major heavy metals
- Chemistry: Solubility and Stability of Heavy Metal Hydroxides vs. Heavy Metal Sulfides vs. Heavy Metal Iron Sulfides
- A Detailed look at chromium, Arsenic and lead
Part 2 (1 hour)
- Importance of Treatability studies to select the right reagent for field application
- Design Considerations and Key parameters for field applications
- Addressing comingled plumes
- Case studies and implementation
Speaker Bio:
Fayaz Lakhwala, Ph.D., Technical Manager, PeroxyChem, LLC
Dr. Lakhwala serves as the Technical Manager for North America at PeroxyChem Environmental Solutions. He received his M.S. and Ph.D. in Chemical Engineering with a minor in Environmental Engineering from the New Jersey Institute of Technology. Since 1991, he has held several positions at environmental consulting firms as well as environmental technology companies in the area of wastewater treatment, and soil, ground water and sediment remediation. During the last 13 years, his focus has been on the design and application of in situ chemical reduction (ISCR), in situ chemical oxidation (ISCO), enhanced reductive dechlorination (ERD), and NAPL / heavy metal stabilization technologies.
