Peer Reviewed Journal Publications

2018

• Liu, Z. and Y. Liu. 2018. Invited review: Mitigation of Greenhouse Gas Emissions from Animal Production. Greenhouse Gases: Science & Technology. (8):627–638; DOI: 10.1002/ghg.
• Liu, Z., Y. Liu, J. Murphy, and R. Maghirang. 2018. Contributions of Kansas rangeland burning to ambient O₃: analysis of data from 2001 to 2016. Science of the Total Environment. Special issue: Health Impact of Wildland Fire Smoke Exposure. 618:1024-1031.

2017​

• Liu, Z., Y. Liu, J. Murphy, and R. Maghirang. 2017. Ammonia and methane emission factors from cattle operations expressed as losses of dietary nutrients or energy. Agriculture. 7(3),16; doi:10.3390/agriculture7030016.
• Liu, Z., Y. Liu, J. Murphy, and R. Maghirang. 2017. Estimating ambient ozone effect of Kansas rangeland burning with receptor modeling and regression analysis. Environments. (4)14; doi:10.3390.
• Liu, Z., Y. Liu, X. Shi, J. Murphy, and R. Maghirang. 2017. Enteric methane conversion factor for dairy and beef cattle: Effects of feed digestibility and intake level. Trans. ASABE. (60)2.
• Liu, Z., Y. Liu, X. Shi. J. Murphy, and R. Maghirang. 2017. Variations of ammonia emissions from cattle operations: Effects of temperature and dietary crude protein content. Trans. ASABE. (60)1.

​2016

• Liu, Z., Murphy, J., Maghirang, R. and Devlin, D. 2016. Health and environmental impacts of smoke from vegetation fires: a review. Journal of Environmental Protection. 7, 1860-1885. doi: 10.4236/jep.2016.712148.
• Liu, Z, Y. Liu, R. Maghirang, D. Delvin, C. Blocksome. 2016. Estimate contributions of prescribed rangeland burning in Kansas to ambient PM_2.5 through source apportionment with the Unmix receptor model. Trans. ASABE. 59(5).
• Liu, Z., W. Powers, and J. Harmon. 2016. Estimating ventilation rates of animal houses through CO₂ balance.  Trans. ASABE. 59(1).

​2014

• Liu, Z., W. Powers, and S. Mukhtar. 2014. A review of practices and technologies for odor control in swine production facilities. Appl. Eng. Agric. 30(3):477-492.
• Liu, Z. and W. Powers. 2014. Greenhouse gases emissions from multi-species animal operations and the potential diet effects.  Trans. ASABE.  57(1).
• Liu, Z., W. Powers, J. Murphy, and R. Maghirang. 2014. Ammonia and hydrogen sulfide emissions from swine production facilities in North America: a meta-analysis. J. Anim. Sci.  92: 1656-1665.
• Wang-Li, L., Q. Li, Z. Liu, S. Shah, R.K.m. Jayanty, P. Bloomfield. 2014. Major Ionic Compositions of Fine Particulate Matter in an Animal Feeding Operation Facility and its Vicinity. J. Air Waste Manag. Assoc. 64(11):1279-87.

​2013

• Liu, Z., W. Powers, and H. Liu. 2013. Greenhouse Gas Emissions from Swine Operations: Evaluation of the IPCC Approaches through Meta-analysis. J. Anim. Sci. 91(8):4017-4032.
• Wang-Li, L., Z. Cao, Q. Li, Z. Liu, D. Beasley. 2013. Concentration and particle size distribution of particulate matter inside tunnel-ventilated high-rise layer operation houses. Atmos. Environ. 66:8-16.

​2012

• Liu, Z., W. Powers, B. Oldick, J. Dadivson, and D. Meyer. 2012. Gas emissions from dairy cows fed typical diets of Midwest, South and West regions of the United States. J. Environ. Qual. 41(4):1228-1227.
• Li, Q.F., Wang-Li, L., Liu, Z. and Heber, A.J., 2012. Field evaluation of particulate matter measurements using tapered element oscillating microbalance in a layer house. J. Air Waste Manag. Assoc. 62(3):322-335.

​2011

• Liu, Z., W. Powers, D. Karcher, R. Angel, and T. J. Applegate. 2011. Effect of amino acid formulation and supplementation on nutrient balance in turkeys. Poul.  Sci. 90:1153-1161.
• Liu, Z., L. Wang, D. B. Beasley, and S.B. Shah. 2011. Validation and uncertainty analysis of an ammonia emission model for broiler litter. Trans. ASABE. 54(3): 1051-1057.
• Liu, Z., W. Powers, D. Karcher, R. Angel, and T. J. Applegate. 2011. Effect of amino acid formulation and supplementation on air emissions from turkeys. Trans. ASABE. 54(2): 617-628.

2010

• Wang, L., E.O. Oviedo-Rondón, J. Small, Z. Liu, B.W. Sheldon, G.B. Havenstein, and M.C. Williams. 2010. Farm-scale evaluation of ozonation for mitigating ammonia concentrations in broiler houses. J. Air Waste Manag. Assoc. 60(7): 789-96.

​2009

• Liu, Z., L. Wang, D. B. Beasley, and S.B. Shah. 2009. Modeling ammonia emissions from broiler litter at laboratory scale. Trans. ASABE, 52(5): 1683-1694.
• Li, Q., L. Wang, Z. Liu, and R. Kamens. 2009. Could ozonation technology really work for mitigating air emissions from animal feeding operations? J. Air Waste Manag. Assoc. 59: 1239-1246.

​2008

• Liu, Z., L. Wang, D.B. Beasley, 2008. Comparison of three techniques for determining ammonia emission fluxes from broiler litter. Trans. ASABE, 51(5): 1783-1790.

​2007

• Liu, Z., L. Wang, D.B. Beasley, and E. Oviedo. 2007. Effect of moisture content on ammonia emissions from broiler litter: a laboratory study. J. Atmos. Chem. 58:41-53.

​2006

• Liang, F., M. Lu, M. E. Birch, T. Keener, and Z. Liu. 2006. Determination of polycyclic aromatic sulfur heterocycles in diesel particulate matter and diesel fuel by gas chromatography with atomic emission detection”, J. Chromatography A, 1114 (1): 145-153.

​2005

• Liu, Z., M. Lu, M.E. Birch, T.C. Keener, S. Kang, F. Liang, 2005. Variation of the particulate carbon distribution in emissions from a non-road diesel generator. Environ. Sci. Technol., 39(20): 7840-7844.
• Liang, F., M. Lu, T.C. Keener and Z. Liu. 2005. The organic composition of diesel particulate matter, diesel fuel, and engine oil of a non-road diesel generator, J. Environ. Monit. 7: 983-988. 

Extension Publications with Kansas State University Agricultural Experiment Station and Cooperative Extension Service

• Design and management of biofilters for air pollution control in livestock facilities. MF3387.
• A guide to composting animal manure. 
• Diet and feed management to reduce gaseous emissions from livestock production: principles and practices. MF3386. 
• National Air Quality Site Assessment Tool (NAQSAT) for livestock producers. MF3367.
• How much does Kansas rangeland burning contribute to ambient PM_2.5? MF3358.
• How much does Kansas rangeland burning contribute to ambient ozone? MF3357.
• How feeding affect enteric methane emissions from dairy and beef cattle. MF3441.
• Factors to consider for managing ammonia emissions from beef and dairy operations. MF3440.
• Gas emissions from beef and dairy operations. MF3185.
• Anaerobic digestion of livestock manure: feasibility and factors to consider. MF3184.
• Carbon footprint of livestock production. MF3180.
• Health guidelines for smoke from vegetation fires. MF3179.
• Air quality concerns of prescribed range burning in Kansas. MF3121.
• Technologies for odor and air emission control in swine production facilities. MF2918.

Other Extension publications

• Liu, Z. and R. Larson. 2018. Anaerobic digestion. MidWest Plan Service (MWPS) 18-4 Manure processing and utilization. In press.
• Powers, W., V. Vaddella, and Z. Liu. 201x. Technical Working Group on Agricultural Greenhouse Gases: Swine chapter. Subcontract to Duke University (Prime contractor: Packard Foundation). In process.
• Liu, Z. and W. Powers. 2013. Ammonia and hydrogen sulfide emissions from swine production facilities in North America: a meta-analysis. Swine Industry Day Report of Progress, Kansas State University.
• Liu, Z. and W. Powers. 2013. How much my farm emit? Michigan State University Extension. Emerging issues in animal agriculture.
• Powers, W., Z. Liu, and V. Vaddella. 2013. Climate vulnerabilities of the poultry industry. In: Climate Vulnerability. Elsevier. Oxford, UK.

Workshops and Presentations

• National Air Quality Site Assessment Tool (NAQSAT) for livestock producers.
• Impact of prescribed burning in the Flint Hills region.
• How much does Kansas rangeland burning contribute to ambient ozone and PM_2.5?
• Developing strategies for smoke management under new US ozone and PM standards
• Flint Hills pasture burning:A challenge for air quality
• Quantifying the contributions of pasture burning on air quality
• Managing smoke:Our strategies and opportunities
• Smoke fundamentals
• Air emission from swine production. Pork Checkoff Swine Education In-Service, Cincinnati, OH, September 25-27, 2012.

Radio interview

• Agriculture Today: March 9th, 2018
• Agriculture Today: April 10th, 2017
• February, 8th, 2016
• October, 22nd, 2012