Articles Published in Peer-Reviewed Journals

*Calicioglu, A. O., and Brennan, R. A. (2018) “Sequential ethanol fermentation and anaerobic digestion increases bioenergy yields from duckweed.” Bioresource Technology, 257: 344-348.

*Kreider, A. N., *Fernandez Pulido,C., Bruns, M. A., and Brennan, R. A. (2018) “Duckweed as an agricultural amendment: nitrogen mineralization, leaching, and sorghum uptake.” Journal of Environmental Quality, in review.

*Calicioglu, A. O., *Shreve, M. J., Richard, T. L., and Brennan, R. A. (2018) “Effect of pH and temperature on microbial community structure and carboxylic acid yield during the acidogenic digestion of duckweed.” Biotechnology for Biofuels, in review.

*Shreve, M. J., and Brennan, R. A. (2018) “Removal of trace organic contaminants and estrogenic activity in six full-scale integrated fixed film activated sludge (IFAS) systems treating municipal wastewater.” Water Research, in preparation.

*Roman, B., and Brennan, R. A. (2018) “A beneficial by-product of ecological wastewater treatment: an evaluation of wastewater-grown duckweed as a protein supplement for sustainable agriculture.” In preparation.

*Shreve, M. J., and Brennan, R. A. (2018) “Microbial diversity in six full-scale integrated fixed-film activated sludge systems treating municipal wastewater.” Applied and Environmental Microbiology, in preparation.

*Fernandez Pulido, C., Zhang, W., ‡Caballero, J. J., and Brennan, R. A. (2018) “Duckweed as a sustainable soil amendment to support crop growth, enhance soil quality, and reduce agricultural runoff.” In preparation.

*Lin, Y., *Newcombe, C. E., and Brennan, R. A. (2018) “Crab shell amendments enhance the abundance and diversity of key microbial groups in sulfate-reducing columns treating acid mine drainage.” In preparation.

*Shreve, M. J., Brockman, A., *Hartleb, M., Prebihalo, S., Dorman, F. L., and Brennan, R. A. (2016) “The white-rot fungus Trametes versicolor reduces the estrogenic activity of a mixture of emerging contaminants in wastewater treatment plant effluent.” International Biodeterioration & Biodegradation, 109: 132-140.

Brennan, R. A., and Riley, D. R. (2016) "A new program in sustainable engineering: a platform for integrating research and service into the classroom through global engagement." In W. Leal Filho and S. Nesbit (eds.), New Developments in Engineering Education for Sustainable Developtment, World Sustainability Series, Springer International Publishing, DOI 10.1007/978-319-32933-8_2.

*Grembi, J.A., Sick, B.A., and Brennan, R. A. (2016) “Remediation of high-strength mine impacted water with mixed organic substrates containing crab shell and spent mushroom compost.” Journal of Environmental Engineering,142 (2): 04015075.

*Kelsey, D.J., Nieto-Delgado, C., Cannon, F.S., and Brennan, R. A. (2015) “Organic neem compounds inhibit soft-rot growth and improve the strength of anthracite bricks bound with collagen and lignin for use in iron foundry cupolas.” Journal of Applied Microbiology, 119: 65 - 75.

*McElhoe, J., and Brennan, R. A. (2012) “Effects of chitin purity and proppant loading on the bioremediation of chlorothenes.” Journal of Environmental Engineering, 138 (8): 862 – 872.

*Robinson-Lora, M.A., and Brennan, R. A. (2011) "Anaerobic precipitation of manganese and co-existing metals in mine impacted water treated with crab shell-associated minerals." Applied Geochemistry, 26: 853 - 862.

*Robinson-Lora, M.A., and Brennan, R. A. (2010) "Biosorption of manganese onto chitin and associated proteins during the treatment of mine impacted water." Chemical Engineering Journal, 162: 565 - 572.

*Newcombe, C. E., and Brennan, R. A. (2010) "Improved passive treatment of acid mine drainage in mushroom compost amended with crab-shell chitin." Journal of Environmental Engineering, 136 (6): 616 - 626.

*Cai, H.,*Eramo, A. G., Evans, P. J., Fricke, R., and Brennan, R. A. (2010) "In situ bioremediation of perchlorate in vadose zone soil using gaseous electron donors: microcosm treatability study." Water Environment Research, 82 (5): 409 - 417.

*Robinson-Lora, M. A., and Brennan, R. A. (2010) "Chitin complex for the remediation of mine impacted water: geochemistry of metal removal and comparison with other common substrates." Applied Geochemistry, 25 (3): 336 - 344.

*Robinson-Lora, M. A., and Brennan, R. A. (2009) "Efficient metal removal and neutralization of acid mine drainage by crab-shell chitin under batch and continuous-flow conditions." Bioresource Technology, 100 (21): 5063 - 5071.

*Robinson Lora, M. A., and Brennan, R. A. (2009) "The use of crab-shell chitin for biological denitrification: batch and column tests." Bioresource Technology, 100 (2): 534 - 541.

Daubert, L. N., and Brennan, R. A. (2007) "Passive remediation of acid mine drainage using crab shell chitin." Environmental Engineering Science, 24 (10): 1475 - 1480.

*Rezaei, F., Richard, T. L., Brennan, R. A., and Logan, B. E. (2007) "Substrate-enhanced microbial fuel cells for improved remote power generation from sediment-based systems." Environmental Science & Technology, 41 (11): 4053-4058.

Brennan, R. A., Sanford, R. A., and Werth, C. J. (2006) “Biodegradation of tetrachloroethene by chitin fermentation products in a continuous flow column system.” Journal of Environmental Engineering, 132 (6): 664 - 673.

Brennan, R. A., Sanford, R. A., and Werth, C. J. (2006) “Chitin and corncobs as electron donor sources for the reductive dechlorination of tetrachloroethene.” Water Research, 40 (11): 2125 - 2134.

Prior to Penn State:

Brennan, R. A., and Sanford, R. A. (2002) “A continuous steady-state method for delivering tetrachloroethene (PCE) to chlororespiring bacteria using Tenax.” Applied and Environmental Microbiology, 68 (3): 1464-1467.

Edwards, F. G., Egemen, E., Brennan, R., and Nirmalakhandan, N. (1999) “Ranking of toxics release inventory chemicals using a level III fugacity model and toxicity.” Water Science & Technology. 39 (10): 83 - 90.

Egemen, E., Corpening, J., Padilla, J., Brennan, R., and Nirmalakhandan, N. (1999) "Evaluation of ozonation and cryptic growth for biosolids management in wastewater treatment." Water Science & Technology. 39 (10): 155-158.

Brennan, R. A., Nirmalakhandan, N., and Speece, R. E. (1998) “Comparison of predictive methods for Henrys law coefficients of organic chemicals.” Water Research, 32 (6): 1901-1911.

Nirmalakhandan, N., Brennan, R. A., and Speece, R. E. (1997) “Predicting Henrys constant and the effect of temperature on Henrys constant.” Water Research, 31 (6): 1471 - 1481.

Nirmalakhandan, N., Xu, S., Trevizo, C., and Brennan, R. (1997) “Additivity in microbial toxicity of non-uniform mixtures of organic chemicals.” Exotoxicology & Environmental Safety, 37 (1): 97 - 102.


‡Undergraduate student supervised by Dr. Brennan
*Graduate student supervised by Dr. Brennan
**Post-doctoral student supervised by Dr. Brennan