Authors: Abhishek Pokharel,
Published in: CSBE-SCGAB Technical Conferences » AGM Vancouver 2019
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Description: Pyrolysis can be used for energy production from waste biomass of agriculture and forestry. Biochar is the solid byproduct of pyrolysis and its cascading use can offset the cost of the process. A wide variety of research on biochar has highlighted its ability to absorb nutrients, metal and complex compounds; filter suspended solids; enhance microorganisms? growth; retain water and nutrients as well as increase carbon content of soil. In addition, sustainable biochar systems are an attractive approach for carbon sequestration and total waste management cycle. Biochar from pyrolysis (4500 C, 30 min.) of wood pellets was studied for adsorption of nitrogen from effluent of municipal wastewater treatment plant. Adsorption isotherm and breakthrough curve were determined for the biochar. Similarly, biochar?s effects in aerobic as well as anaerobic bioreactors were also studied. In both cases the biomass was increased in presence of biochar. The amount of gas produced for anaerobic digestion of fruit mix (apple and banana) was similar but the rate of production was significantly faster in biochar fed reactors. The cumulative goal of the study is to use biochar in various wastewater treatment units like aeration tank, secondary clarifier and tertiary nutrient recovery system as well as in anaerobic digestion of the sludge to optimize utilization and add value before being used as a soil amendment.
Keywords: biochar, wastewater treatment, nutrient recycling, soil amendment, bioeconomy
Conference name: CSBE/SCGAB 2019 Annual Conference, Vancouver, BC, 14-17 July 2019.
Publication type: Text.Abstract
Language 1: en
Rights: Canadian Society for Bioengineering