CEST Proceedings are published under the ISSN 2944-9820.
Occurrence and spatiotemporal variability of sunscreen agents along the polish part of the Baltic Sea coast
(Corresponding) ASTEL A., STEC M., ASTEL K.
Topic:
Emerging pollutants
UV-filters accumulate in tissues of aquatic organisms and induce negative effects on fertility and reproduction. Since they are “new emerging pollutants” general monitoring programs are rare and mainly conducted in touristic places, where high temperatures are recorded throughout the year (Spain,...Read more
Keywords:
sunscreen agents, river water, sludge, sand sediments, chromatography, toxicity
Challenges in biological treatment plants: the approach of zero sludge waste
THEOFANIDIS S., Samiotis G., Bellos D., Pekridis G., Tsioptsias C., (Corresponding) Amanatidou E.
Topic:
Wastewater treatment
The current trend in operation of biological Wastewater Treatment Plants (WWTPs) is the minimization of sludge wastage due to its labor and cost intensive management process. Minimization of sludge can be achieved by increasing the solids retention time (SRT) in a WWTP, up to an almost complete...Read more
Pretreatment of antibiotics-contaminated waste biological sludge by ozonation
Boševski I., (Corresponding) Kalčikova G., Derco J., Žgajnar Gotvajn A.
Topic:
Wastewater treatment
Ozonation was studied as a pretreatment method for a waste biological sludge, contaminated with large amounts of globally used antibiotics; tiamulin, levofloxacin and amoxicillin. At the concentrations of over 100 mg L-1, these antibiotics were found to inhibit biogas production (up to 50%), which...Read more
Investigation of food additives readily biodegradability in respirometric tests
Vazaiou N., (Corresponding) Gatidou G., Arvaniti O., Stasinakis A.
Topic:
Emerging pollutants
The biodegradability of fourteen (14) food additives, belonging to different groups such as artificial sweeteners, preservatives and coloring agents, was evaluated using the OECD 301F protocol (manometric respirometry test). According to the results, seven out of fourteen compounds, namely...Read more
Biosolids as soil-amendment: evaluation of nutrient leaching in loamy-silty soil
(Corresponding) Venegas M., Fernandez G., Vidal G.
Topic:
Biowaste
Municipal sewage sludge is a by-product of wastewater treatment. The amount of sewage sludge has increased with the construction and expansion of wastewater treatment plants, while stricter policies have limited its disposal. Anaerobic digestion is a worldwide technology used in sewage sludge...Read more
Mass and energy balances of sewage sludge pyrolysis in a lab rotary kiln
(Corresponding) Mendoza L., Gómez A., Rincón S.
Topic:
Energy technologies and sustainability
The aim of this work is to study the influence of the main parameters of sewage pyrolysis in a rotary kiln on the product distriburion and energy balances. An indirectly heated rotary kiln at a laboratory scale was used (4 kg/h). An increase in the final temperature causes the reduction of the...Read more
Keywords:
Sewage sludge, pyrolysis, rotary kiln, energy and mass balance
Understory evolution related to organic fertilization in a silvopastoral system established under Pinus radiata D. Don. in an acidic soil
(Corresponding) MOSQUERA-LOSADA M., RODRÍGUEZ-RIGUEIRO F., SANTIAGO-FREIJANES J., RIGUEIRO-RODRÍGUEZ A., FERREIRO-DOMÍNGUEZ N.
Topic:
Agroforestry, forest and agricultural sustainability
Mixed pasture establishment is considered a key point to increase livestock production due to the higher quality it has compared with unmanaged shrubby species. They provide also a set of ecosystem services such as carbon sequestration and higher biodiversity. Moreover, herbaceous pasture...Read more
Removal of heavy metals from sewage sludge using combined hydrothermal pretreatment and chelate extraction
(Corresponding) Usťak S., Muňoz J.
Topic:
Wastewater treatment
The removal of heavy metals from sewage sludge using the combined influence of hydrothermal pretreatment and chelate extraction was tested. The classical method of batch extraction with chelates and the advanced hydrothermal pretreatment (HTP) extraction process with chelates were compared. Both...Read more
Keywords:
sewage sludge; heavy metals; hydrothermal pretreatment; chelate extraction
Study on the fate of the chemical uncoupler 3,3′,4′,5-tetrachlorosalicylanilide (TCSA) in activated sludge process and investigation of its effects to different aquatic organisms
(Corresponding) Gatidou G., Hatzopoulos P., Chhetri R., Kokkoli A., Giannakopoulos A., Arvaniti O., Andersen H., Stasinakis A.
Topic:
Emerging pollutants
This study examines the biodegradation of 3,3′,4′,5-tetrachlorosalicylanilide (TSCA) by activated sludge and investigates its effects to different aquatic organisms. According to the experimental results, the fate of the target compound in activated sludge systems is governed by the mechanisms of...Read more
A comparative assessment of alkali-activated stabilisers including waste materials, for the treatment of swelling-shrinking soils
(Corresponding) Mavroulidou M., Gray C., Gunn M.
Topic:
Solid waste management
Swelling-shrinking soils (also known as expansive soils) experience very considerable volume changes upon changes in moisture content, thus causing major damages to lightweight structures, pavements, slopes and utilities. To counteract this problem chemical stabilisation of this type of soil with...Read more
Keywords:
chemical ground improvement; alkali-activated cements; ground granulated blast furnace slag; paper sludge ash; solid waste management
