News & Events
Chemistry Weekly Seminar - Dr. Stephanie MacQuarrie
Posted on 2018-01-09 in Events
Jan 26, 2018
Reaping Unsown Rewards from Biochar
Low energy pyrolysis generates a solid by-product called bio-char (often < 40% yield). Currently bio-char is used as a low value soil amendment. The MacQuarrie research program investigates higher value use of bio-char providing incentive for moving towards a more sustainable model for energy production. Biochar produced through a low temperature (~400 ºC) pyrolysis of forestry waste, has been fully characterized and assessed for its metal ion adsorption capacity and compared to conventional commercially available wood-derived Norit activated carbon (NoritTM CA1 from wood). The biochar exhibited a substantially lower surface area than the activated carbon, 259 vs. 1323 m2 g-1, but displayed superior adsorption capacity for all tested metal ions. The adsorption kinetics, leaching, and recyclability of the biocarbon were examined. The binding behaviour was determined using X-ray photoelectron spectroscopy which revealed that strongly bound metal ions formed insoluble oxides in the material while less strongly bound ions were adsorbed as carboxylate chelates. The retention of endogenous surface groups greatly facilitates the adsorption of metal ions from solution, which makes this material greener, less expensive, and more effective for these particular applications. Recent endeavours include organic functionalization of biochar to generate chiral materials.
Special Seminar - Dr. Amy Stevens
Posted on 2019-02-08
Dr. Amy Stevens, Department of Chemistry, will present a seminar
Chemistry Weekly Seminar - PhD Candidate Amara Zuhaib
Posted on 2019-01-25
Amara Zuhaib, PhD Candidate, will present a seminar at 2:30 p.m. in Thorvaldson 271.
Special Seminar - Dr. Joe B. Gilroy
Posted on 2019-01-21
Dr. Joe B. Gilroy will present a Special Seminar at 10:30 in Thorvaldson 205A
Spinks Lecture Series - Dr. Chris Chang
Posted on 2018-12-17
Dr. Chris Chang, University of California, Berkley
Chemistry Weekly Seminar - Dr. Scott Murphy
Posted on 2018-12-17
Dr. Scott Murphy, Department of Chemistry & Biochemistry at The University of Regina, will present a seminar at 4:00 p.m. in Thorvaldson 271.