Authors: Kenton Connor McCorquodale-Bauer
Published in: CSBE-SCGAB Technical Conferences » AGM Vancouver 2019
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Description: Zebra mussels are invasive across North America, living in lakes and rivers in prolific numbers. Zebra mussel shells wash up onto the shores of these lakes and rivers in enormous amounts resulting in decreasing beach tourism. To provide an economic incentive for the removal of zebra mussel shells from beaches, the shells can be reused as a mineral resource. In the presented study it was shown that zebra mussel shells can be used as an alternative mineral resource to open pit mined virgin calcium carbonate, specifically for calcium oxide (lime) production as a phosphorus reducing chemical agent, thereby combating eutrophication. Through XRD analysis it was shown that zebra mussel shells consisting of crystalline calcium carbonate undergoes decarbonation, producing lime, at temperatures 700 C and above. It was observed that for zebra mussel shells heated at temperatures of 600, 700, 800, 900, and 1000 C for one hour, shells exhibited mass loss of 0.30, 12.83, 41.56, 43.16, and 43.19 % respectively. From estimated calcium carbonate concentrations in zebra mussel shells (98.16%) it was predicted, based on observed mass loss, that 0.38, 15.99, 51.81, 53.81, and 53.84 % calcium oxide is produced from raw shell material heat treated at 600, 700, 800, 900, and 1000 C respectively. The relationship between shell heat treatment and mass loss was modeled using a sigmoid curve. Preliminary results demonstrate that dosed 1.00 g/L heated ground zebra mussel shell material can remove > 95 % phosphorus from collected effluent when heat treated at 800 C.
Keywords: Zebra mussel shells, Waste water treatment, Calcium carbonate, Calcium Oxide, Phosphorus
Conference name: CSBE/SCGAB 2019 Annual Conference, Vancouver, BC, 14-17 July 2019.
Session name: Soil and water
Publication type: Text.Abstract
Language 1: en
Rights: Canadian Society for Bioengineering