Environmental Science and Technology publication



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.


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


June 5, 2020

Prof. Khanal has been selected to serve on the editorial board of highly prestigious journal “Industrial Biotechnology”.

May 6, 2020

Fernanda Rocha de Oliveira, former PhD student of Environment and Bioenergy research group, works in the capacity of process manager at Anheuser-Busch Inbev, USA. She manages the fermentation and finishing (filtering) part of the beer production in 6 different release...

October 26, 2019

Duc Nguen, former PhD student of Environment and Bioenergy research group, works with WWF, vietnam in the capacity of a scientific officer. 

Duc's research work was focused on microaeration in anaerobic digestion. 

July 8, 2019

Sumeth Wonkiew (Ph.D.) has joined as a Lecturer in the Department of Environmental Engineering at Chulalongkorn university, Thailand. Chulalongkorn University is one of the top national universities in Thailand.

May 5, 2019

Dr. Khanal is serving as a lead guest editor for two special issues of Bioresource Technology on two information areas: "Anaerobic Digestion"  and "Waste-to Resources". 

February 11, 2019

Chayanon Sawatdeenarunat, Ph.D., has started his professional career as an Assistant Professor at Asian Development College for Community Economy and Technology, Chiang Mai Thailand.

February 11, 2019

Saoharit Nitayavardhana, Ph.D., has joined as an Assistant Professor at Chiang Mai University, Chiang Mai. Chiang Mai is one of the top national universities in Thailand.

June 21, 2018

 Dr. Samir Khanal was promoted to full Professor effective August 1, 2018. Congratulation Professor Samir Khanal. 

June 21, 2018

Professor Samir Khanal has recent been awarded a highly competitive grant from the Western Regional Sun Grant Center. The $150,000 grant will focus on bioconversion of food wastes/agri-residues using black soldier fly (BSF) (Hermetia illucens).

 Source: Sandec Eawag...

April 30, 2018

Dr. Khanal has most read publications in the department, according to Research Gate. 

Follow Dr. Samir Khanal on Research Gate for update and collaboration. 

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Congratulations to Prof. Khanal!!!

June 5, 2020

Fernanda Oliveira from Environment and Bioenergy research group works at Anheuser-Busch Inbev

May 6, 2020

Duc Nguyen from Environment and Bioenergy research group works with WWF

October 26, 2019

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