Environmental Science and Technology publication

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September 2018
The review paper "Nitrogen transformations in aquaponic systems: a review" from Dr. Khanal's lab has also been listed as the Most Cited Aquacultural Engineering Articles since 2015.

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September 2018

And the award goes to...
We are glad to announce that the paper “Anaerobic digestion of lignocellulosic biomass: Challenges and opportunities” published by Sawatdeenarunat C., Surendra K.C., Takara D., Oechsner H., and Khanal S.K., received the Elsevier Top Cited Award during the BIORESTEC-2018. This is 11th highest paper for BITE citations and IF in 2017.  


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Bioresource Technology 
August 2018

Paper published by Dr. Khanal along with former Ph.D. students Chayanon Sawatdeenarunat, Surendra KC, Devin Takara and Dr. Hans Oeschsner rank among the most cited articles since 2015 in Bioresource Technology.
Well done!

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Research review paper published in
Biotechnology Advances

August 2018


Exposure of a small amount of oxygen/air (microaeration) has been reported to benefit the anaerobic digestion (AD) process in enhancing hydrolysis, improving methane yield, stabilizing the process and scavenging hydrogen sulfide among others. The underlying mechanism of enhancing AD process via microaeration is the augmentation of activity and diversity of the microbial consortia that promotes syntrophic interactions among different microbial groups, thereby creating a more stable process. To design and implement a microaeration-based AD process, fundamental insights about the mechanism of the AD system at process, microbial and molecular levels must be fully explored. This review critically examines microaeration-based AD processes through our recent understandings of the effect of oxygen on microbial community structure, enzymatic, energetic, physiological, and biochemical aspects of the microbial-mediated process. Syntrophic interactions between hydrolytic, fermentative, sulfate reducing, syntrophic bacteria and methanogens under microaerobic conditions are examined to reveal putative mechanism and factors that need to be considered when implementing microaeration in AD process. Further studies are needed to better understand the microbial pathways and bioenergetics of the microaerobic AD process by adopting advanced molecular techniques such as metagenomics, transcriptomics, and proteomics

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