CEST Proceedings are published under the ISSN 2944-9820.
Production of PHAs with enhanced properties from sugar-based wastewater in a two stage process
FOUSKAKIS G., STERGIOPOULOU E., ALEXANDROPOULOU M., (Corresponding) ANTONOPOULOU G., NTAIKOU I., LYBERATOS G.
Topic:
Environmental biotechnology and bioenergy
The experimental design of the study was based on two different microbial processes, i.e. anaerobic fermentation of a sugar-based wastewater via mixed acidogenic cultures and aerobic polymerization of the produced acids and alcohols for poly-hydroxy-alkanoates (PHAs) production, via enriched...Read more
Keywords:
PHAs, up-flow column reactor, SBR, two stage process
Nano-iron based coated biomass as packing material in fixed-bed reactors for Lead removal from wastewater: experimental and mathematical modelling
(Corresponding) Vilardi G., Di Palma L., Verdone N.
Topic:
Heavy metals in the environment
The lead pollution of natural environments is considered a severe issue due to the high toxicity and mobility of lead ionic species. The present study deals with the removal of Pb(II) ions from synthetic wastewater by means of iron-based coated olive stones, used as packing material in lab-scale...Read more
Cobalt and Phosphorous Recovery from Semiconductor Wastewater through Homogeneous Crystallization of Cobalt Phosphate in a Fluidized-bed Reactor
Bayon L., Ballesteros Jr. F., Segura-Garcia S., (Corresponding) Lu M.
Topic:
Heavy metals in the environment
Semiconductor manufacturing involves distinct processes that generate complex wastewater streams that require treatment before it proceeds to the main wastewater effluents. The present study utilized fluidized-bed crystallization to recover resources from the combined synthetic wastewater of...Read more
Anaerobic ammonium nitrogen oxidation and sulphate reduction in psychrophilic conditions
Przywara L.
Topic:
Wastewater treatment
Investigations of simultaneous removal of ammonium and sulphate were carried out in anaerobic laboratory bioreactor - upflow anaerobic filter (UAF). The bioreactor was filled with the anaerobic activated sludge from WWTP Bielsko – Biała. The process was operated in psychrophilic conditions...Read more
Keywords:
ammonium and sulfate removal, reactor UAF, psychrophilic conditions
Structuring efficient photocatalysts into bespoke fiber shaped systems for applied water treatment
(Corresponding) Theodorakopoulos G., Romanos G., Katsaros F., Papageorgiou S., Falaras P., Kontos A., Beazi-Katsioti M.
Topic:
Nanomaterials in the environmnents applications and effects
In this study structured photocatalytic systems were successfully developed by a facile method. Polymeric (Alginate) molds, settled the basis in order to effectively disperse and stabilize nanoparticles of an efficient, copper augmented photocatalyst (Degussa P25), which after removal of the...Read more
Keywords:
Photocatalysis; Alginate; Titania; Batch reactor; MO degradation
Nitrification inhibition test of salty wastewater containing Tetrakishydroxymethyl phosphonium sulphate (THPS), formaldehyde and methanol using salt-adapted nitrifying bacteria, an alternative test method to ISO method
(Corresponding) Chhetri R., Kokkoli A., Karvelas S., Andersen H.
Topic:
Wastewater treatment
Nitrification inhibition test is a standard method to test if the chemicals or samples received by wastewater treatment plant are toxic to the nitrifying bacteria in the wastewater treatment plant. Nitrification inhibition test based on ISO method ISO9509 or modified ISO9509 method (REFLAB method)...Read more
Keywords:
Nitrification inhibition, wastewater, THPS, Formaldehyde, Moving bed bio-film reactor
High-rate anaerobic co-digestion of agro-industrial wastes combined with ammonia recovery and biogas purification
Eftaxias A., Georgiou D., (Corresponding) Diamantis V., Koumara A., Koskinari M., Aivasidis A.
Topic:
Environmental biotechnology and bioenergy
Screened dairy manure, pressure-sterilized animal by-products, and cheese whey were co-digested in a Plug Flow Reactor (PFR) over a period of 150 days. The mixture was characterized by TCOD = 70±8 g/L, SCOD = 26±6 g/L, NH4-N = 1.5±0.3 g/L, TSS = 20±5 g/L, VSS = 18±6 g/L, TS = 33±5 g/L, VS = 26±2 g/...Read more
Kinetics study of the MO adsorption and photocatalytic degradation using an effectively engineered HF photocatalyst
(Corresponding) Theodorakopoulos G., Katsaros F., Papageorgiou S., Romanos G.
Topic:
Water treatment
In this study, copper decorated photocatalysts (Degussa P25), were shaped in the form of ceramic hollow fibers (HFs) and their photocatalytic properties were investigated using Methyl Orange (MO), a prototype anionic pollutant. The abatement of the dye was tested in dark and under UV irradiation by...Read more
Keywords:
Adsorption; Photocatalysis; Kinetics study; Batch reactor; MO degradation
Comparison of the continuous fermentative hydrogen production efficiency from cheese whey in suspended and attached-biomass growth systems
ALEXANDROPOULOU M., LYBERATOS G., (Corresponding) ANTONOPOULOU G.
Topic:
Wastewater treatment
In the present study, comparison of dark fermentation (DF) efficiency from cheese whey (CW) in an anaerobic UpFlow Column Reactor (AUFCR), filled with a support material for biomass attachment and a Continuous Stirred Tank reactor (CSTR), was assessed. The process efficiency and stability as well...Read more
Keywords:
Cheese whey, Continuous stirred tank reactor, Upflow Column bioreactor, hydraulic retention time
Ciprofloxacin and sulfamethoxazole biotransformation products in anaerobic packed bed biofilm reactor applied to the sanitary sewage treatment
(Corresponding) Carneiro R., Sabatini C., Titato G., Ferreira T., Zaiat M., Santos-Neto Á.
Topic:
Emerging pollutants
The presence of antibiotics in the environment has received a lot of attention in recent years due to their ability to promote and spread antimicrobial resistance. In this work, the biodegradation of the antibiotics ciprofloxacin (CIP) and sulfamethoxazole (SMX), as well as the concurrently...Read more
Keywords:
Anaerobic fixed bed biofilm reactor; Antibiotics; Emerging micropollutants; Fluoroquinolone; Sulfonamide.
