Poster Sessions

Context. Granular sludge exhibits unique features, thus being a favorable platform for the cultivation of slow-growing microorganisms, such as anammox and nitrite/nitrate-dependent anaerobic methane oxidation (n-DAMO) microorganisms.Gap.While granular anammox processes have been widely applied, lit...

Context. Activated sludge process, which is a biological wastewater treatment process, has a history of over 100 years, and has been also applied for the treatment of coke-oven wastewater discharged from steelmaking industry. Recent advances in molecular approach such as next-generation sequencing t...

Context. Mainstream nitritation in municipal wastewater treatment is challenging, due to the low bulk ammonium concentrations and low temperatures. It is especially challenging for biofilm processes, where NOB are more easily retained.Gap. Hydroxylamine addition has been proposed as a solution bec...

Medium-chain carboxylic acids (MCCA) are saturated fatty acids containing between 6 and 12 carbon atoms, including a carboxylic group. MCCA are generally produced from fossil sources by chemical processes or extracted from natural oils. The use of bacterial consortia instead of pure cultures in the ...

The health challenges posed by microbial pathogens in water and biofilms are of great global concern. It is important to understand the impact of different disinfection strategies on microbiomes to facilitate water quality control. This work demonstrated the yearlong impacts of ultraviolet light-emi...

Context. Fossil fuels must eventually be replaced by environmentally and economically sustainable, carbon-neutral fuels. Microalgae biomass can be a viable alternative source of third-generation biofuel production. Agri-food aqueous wastes like cheese whey from the dairying industry can become impo...

Context. Understanding how chlorination impacts bacteria in the drinking water distribution system (DWDS) and biofilm can support decision making and microbial risk assess.Gap. A number of studies compare between different DWDS with different chlorination regimes. At full scale, however, the numbe...

Introduction: Anaerobic digestion (AD) at wastewater treatment plants (WWTPs) is carried out by groups of microorganisms, active in complex metabolic networks. Recent studies of community structure have shown that there are two large fractions, growing and non-growing, the latter being up > 40% of ...

Context. Realizing energy-efficient biological nitrogen removal requires strategies that maintain consistent modulation of nitrifying populations within the activated sludge microbiome to cease the oxidation of ammonium at nitrite. Gap. Engineering strategies designed to out-select nitrite oxidiz...

Understanding the changes in microbial communities from source to tap water after water stagnation is important for process control and risk management. However, little information is available on the fate of microbial communities from source to tap water after stagnation. This study aims to evaluat...

Context. Phototrophic purple non-sulfur bacteria (PNSB) have attracted considerable attention to upgrade wastewater resources to microbial protein for animal feed. Next to their outstanding nutritional properties, they possess the unique ability to grow selectively under anaerobic conditions in the ...

Context. Cheese whey, an aqueous by-product of the dairying industry with high organic load, has 42% of its annual production (154 Mm3·y-1) underutilized as animal feed, fertilizer or discharged in surface water leading to eutrophication. Gap. Volatile fatty acids (VFAs) p...

The Biogas (rich in methane CH4) production is carried out through the process of anaerobic digestion (AD), in which residues are substrates for a microbial consortium that by their metabolism stabilize organic matter and generate by-products. Through co-digestion of residues from 1G and 2G ethanol ...

Mainstream nitrogen removal by partial nitritation/anammox (PN/A) offers energy and cost savings for sewage treatment. This pathway relies on two groups of microbes: aerobic and anoxic ammonium-oxidizing bacteria. Next to these essential bacteria, undesired groups of bacteria like nitrite-oxidizi...

Context. Ozonation is a used for drinking water preparation and to reduce assimilable organic matter and remove hazardous ozonation byproducts, ozonation is frequently followed by biofiltration, such as passage through slow sand filters (SSFs). The disinfectant properties of the ozone causes shifts ...

Context. Slow sand filters (SSFs) remove organic matter and microbial pathogens for drinking water production. Despite the biological nature of SSFs and their effect on flora of the finished water, much remains unknown regarding their microbial communities.Gap. No study has described the developme...

Context and gap: Biofilm formation on a biocarrier surface is a complex process which is not only determined by characteristics of supporting media but also affected by the type of microorganisms, initial inoculum concentration, and extracellular polymers production. Polyurethane (PU) is one of the...

Context. Non-enzymatic structural proteins called amyloid adhesins are present in activated sludge.Gap. We hypothesize that the (strong) binding forces within activated sludge microcolonies are due to adhesin-like interactions.Aim. Identify operating conditions that stimulate or repress adhesin e...

Polyhydroxyalkanoates (PHAs) are completely biodegradable polymers, that can be synthesized from renewable carbon resources and with important thermo-plastic properties. During last years, an uncoupled C and N-feeding strategy has been applied in sequencing batch reactors (SBRs) in order to stim...

Context. Phages are viruses that infect bacteria and, by predation, can influence the bacterial population dynamics and, consequently, the function of a microbial community. This mechanism can compromise the efficiency of engineered systems that rely on the activity of a bacterial consortium, such ...

Context.Microorganisms in wastewater treatment plants (WWTPs) are essential for water purification to protect public and environmental health. The diversity andassembly of bacterial communities in wastewater treatment plants (WWTPs) is thought to have a direct influence on system performance.Gap.S...

Thailand has a large numbers of cassava pulp residues from agro-industries. Though it is rich in carbohydrate, their utilization is limited due to the low content of protein and poor digestibility resulting to low methane production rate. To improve the utilization efficiency of cassava pulp residue...

Context. Polyphosphate accumulating organisms (PAOs) can promote P removal in enhanced biological phosphorus removal (EBPR) systems. The most commonly observed organisms thought to be PAOs are Accumulibacter and Tetrasphaera.Gap. All Accumulibacter and Tetrasphaera are typically assumed to remove ...

Water conservation efforts have led to decreased water flow in buildings. Without resizing pipes and storage tanks, water retention time (WRT) increases, which may support opportunistic pathogen (OP) growth. Decreasing pipe diameters would allow lower flow volumes without increasing WRT. However, s...