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Adsorption Of Pb2+ On Magnetic Modified Hemp Biochar Prepared Using Microwave-Assisted Pyrolysis, Muhammad T. Afzal, Patrick Godwin, Huining Xiao

Bio-Char II: Production, Characterization and Applications

Magnetic modified hemp biochar with an aim of high adsorption capacity and rapid adsorption rate was prepared by two simple steps using microwave pyrolyzed biochar. This was investigated as a potential green adsorbent for lead remediation from wastewater in a batch-mode experiment. The 150 – 300 µm biochar particles obtained from microwave-assisted pyrolysis of 1.5 kg hemp biomass batch at an average temperature of 600˚C were first impregnated with H₂O₂ and then magnetized by mixing aqueous biochar suspensions with aqueous Fe³⁺/Fe²⁺ solutions. The composition, morphology and surface chemistries of this magnetic biochar was examined …

Nanoindentation Characterization Of Microwave-Pyrolysis Biochar, Muhammad T. Afzal, Chase Wallace, Gobinda Saha

Bio-Char II: Production, Characterization and Applications

This study investigates the nanoindentation hardness and Young’s modulus of microwave pyrolysis biochar developed from hemp and softwood feedstocks. Recent studies have produced encouraging results on the potential for biochar as a reinforcing filler in composite materials, owing to the high porosity and hardness of the carbonous material. In order to further the understanding of the effect of biochar as an additive, and to develop predictive models for the composites, mechanical properties of the chars are needed.

The biochar was synthesized from both hemp and softwood feedstocks, in-house through a microwave-pyrolysis process at 2700 watts, for one hour, with heating …