Poster Sessions

Context. The performance of activated sludge systems is dependent on the growth kinetics of core microbial community (Saunders et al. 2016). To date, the design of many wastewater treatment plants (WWTPs) in the tropics are adopting default growth kinetic parameters from the temperate climate reg...

Context. The anaerobic digesters have potential to produce 14,000 TWh from currently available feedstocks, corresponding to 6-9 % of the world's energy consumption. Gap. While the gas-producing microbiota are well described and understood, little is known about the hydrolysing microorganisms, alt...

Nitrous oxide (N2O) is a very potent greenhouse gas, and mentioned as the dominant ozone-depleting substance of the 21st century. This compound has a 300 times higher climate warming potential than CO2 and it is one of the main contributors to the greenhouse footprint of wastewater treatment plants ...

Nitrous oxide (N2O) production in autotrophic nitrogen conversion processes can be significant and requires further understanding. We operated an intermittently aerated partial nitritation/anammox (PN/A) sequencing batch reactor. Net N2O production rates increased in the aerated phase and decreased ...

A functioning anaerobic digestion(AD) microbiome is integral for sludge management to be successful. Comprehensive ecological insights, and a full accounting of important microbial species, can help to improve and validate operational strategies. We analyzed a time-series of metagenome samples obta...

Active assimilators of soluble microbial products in wastewater anammox processes Rui Xiao1, Shaoyi Xu1, Huijie Lu1*1Key Laboratory of Environment Remediation and Ecological Health, Ministry of Education, College of Environmental Resource Sciences, Zhejiang University, 310058, Hangzhou, China* e-ma...

Context. Success of the partial nitration/anammox (PNA) process relies on a balance of the microbial guilds of aerobic (AOB) and anaerobic ammonia oxidizing bacteria (AnAOB) as well as the suppression of nitrite oxidizing bacteria (NOB). Heterotrophic bacteria (HB) often constitute a large portion ...

High rate activated sludge (HRAS) systems, which are aerobic, are used for redirecting organics for energy recovery. The HRAS works at low sludge retention time (SRT), very short hydraulic retention time (HRT) and a high food to microorganism ratio (F/M). Effluents from these systems have a low carb...

Biodesulfurization (BD) under haloalkaline conditions removes H2S from gas streams and converts it to elemental sulfur by using haloalkaliphilic sulfur-oxidizing bacteria (SOB). In this process, gas is first absorbed in an absorber and oxidized into sulfur in an aerated bioreactor. Recently, the BD ...

Context. The Alberta oil sands industry has amassed over 1 trillion litres of fluid tailings containing toxic compounds such as naphthenic acids. End-pit lakes have been proposed as a long-term reclamation strategy and Base Mine Lake (BML) is the only full-scale end-pit lake in the Canadian oil san...

Global population will reach 10 billion by 2050, threatening food security and fresh water resources due to discharges of organic micropollutants (OMPs). Circular solutions enable efficient resource use, but pose risks due to OMP recirculation. This study presents a membrane-aerated bioreactor (MABR...

Influence of Microbial Community and Biofilm Thickness in the Removal of Organic Micro Pollutants through a Membrane Aerated Biofilm ReactorSanchez-Huerta C. 1,*, Fortunato L.1, Leiknes T. 1, Hong P.-Y. 11 King Abdullah University of Science and Technology (KAUST), Water Desalination and Reuse Cen...

Due to the complexity of microbiome composition and interactions, it remains challenging to uncover the bioreactor "black-box" and to predict bioreactor dynamics (e.g., anaerobic digestion) through linking the microbial community, operational factors and system performances. Previous studies have fo...

Context. Decentralized highstrength wastewater treatment can be accomplished in microbial electrochemical cells (MEC), in which anode-respiring bacteria (ARB) degrade organic matter to respire electrons to an electrode (anode), generating an electrical current that can be used for producing electric...