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Environmental Sciences

Agricultural and Biosystems Engineering Publications

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The Effect Of Biochar Addition On The Biogas Production Kinetics From The Anaerobic Digestion Of Brewers’ Spent Grain, Marta Dudek, Kacper Świechowski, Piotr Manczarski, Jacek A. Koziel, Andrzej Białowiec Apr 2019

The Effect Of Biochar Addition On The Biogas Production Kinetics From The Anaerobic Digestion Of Brewers’ Spent Grain, Marta Dudek, Kacper Świechowski, Piotr Manczarski, Jacek A. Koziel, Andrzej Białowiec

Agricultural and Biosystems Engineering Publications

Biochar (BC) addition is a novel and promising method for biogas yield increase. Brewer’s spent grain (BSG) is an abundant organic waste with a large potential for biogas production. In this research, for the first time, we test the feasibility of increasing biogas yield and rate from BSG digestion by adding BC, which was produced from BSG via torrefaction (low-temperature pyrolysis). Furthermore, we explore the digestion of BSG with the presence BCs produced from BSG via torrefaction (low-temperature pyrolysis). The proposed approach creates two alternative waste-to-energy and waste-to-carbon type utilization pathways for BSG: (1) digestion of BSG waste to ...


Quality Assured Measurements Of Animal Building Emissions: Gas Concentrations, Albert J. Heber, Jiqin Ni, Teng T. Lim, Pei-Chun Tao, Amy M. Millmier, Jacek A. Koziel, David B. Beasley, Steven J. Hoff, Richard E. Nicolai, Larry D. Jacobson, Yuanhui Zhang Jan 2006

Quality Assured Measurements Of Animal Building Emissions: Gas Concentrations, Albert J. Heber, Jiqin Ni, Teng T. Lim, Pei-Chun Tao, Amy M. Millmier, Jacek A. Koziel, David B. Beasley, Steven J. Hoff, Richard E. Nicolai, Larry D. Jacobson, Yuanhui Zhang

Agricultural and Biosystems Engineering Publications

Comprehensive field studies were initiated in 2002 to measure emissions of ammonia (NH3), hydrogen sulfide (H2S), carbon dioxide (CO2), methane (CH4), nonmethane hydrocarbons (NMHC), particulate matter <10 µm in diameter, and total suspended particulate from swine and poultry production buildings in the United States.

This paper focuses on the quasicontinuous gas concentration measurement at multiple locations among paired barns in seven states. Documented principles, used in air pollution monitoring at industrial sources, were applied in developing quality assurance (QA) project plans for these studies. Air was sampled from multiple locations with each gas analyzed with one high quality commercial gas analyzer that was located in an environmentally controlled on-farm instrument shelter. A nominal 4 L/min gas sampling ...