Conference proceedings

Displaying 551 - 560 of 1396

CEST Proceedings are published under the ISSN 2944-9820.

Elevated CO2 in air changes photosynthetic response of Hordeum vulgare and Bromus secalinus to cadmium pollution in soil

(Corresponding) Januskaitiene I., Diksaityte A.
Topic: 
Heavy metals in the environment
The integrated effects of increased atmospheric CO2 and heavy metals pollution may have important implications for plant growth. Elevated atmospheric CO2 can affect plant defences through its significant effects on plant growth. Some studies have found that elevated CO2 can decrease oxidative...Read more
Keywords: 
climate change, cadmium, photosynthesis
Paper ID: 
cest2019_00024

Effects of nitrogen fertilizer on photosynthetic light energy transfer and use in hybrid fescue under drought stress

(Corresponding) Januškaitienė I., Dikšaitytė A., Sujetovienė G., Žaltauskaitė J., Kacienė G., Miškelytė D., Juknys R.
Topic: 
Ecology, environmental change and management
The aim of this study was to investigate the response of chlorophyll a fluorescence parameters of hybrid fescue (× Festulolium loliaceum (Huds.) P. Fourn.) under partly regulated environment and drought stress effect. The results showed that the increasing nitrogen content increased the values of...Read more
Keywords: 
drought stress, nitrogen fertilization, chlorophyll fluorescence, forage crop
Paper ID: 
cest2021_00120

Biosynthesis of Xanthan Gum from Fermenting Potato Peels Extract: Influence of Sucrose Supplementation on Yield and Apparent Viscosity

(Corresponding) Abud A., Silva A.
Topic: 
Food waste
Several residues and carbohydrate-rich effluents have been studied as a possible alternative in the substitution or implementation of the traditional cultivation medium of xanthan gum, helping in the management of these residues and, consequently, reducing fermentation costs. This work studied the...Read more
Keywords: 
residue, viscosity, Xanthomonas, submerse fermentation
Paper ID: 
cest2019_00025

Characterizing activated carbon synthesized from corn straw aiming water treatment

Silva T., Souza I., Silva C., (Corresponding) Abud A.
Topic: 
Environmental biotechnology and bioenergy
The emerging agenda for sustainable development and global warming control searches urgent researches to reduce environmental impacts. In this sense, activated carbons from agroindustrial wastes are widely used as adsorbents in food and pharmaceuticals industries, mainly for the separation and...Read more
Keywords: 
corn straw, adsorption, methylene blue, activated carbon
Paper ID: 
cest2019_00202

Membrane technology for the purification of solutions containing cationic surfactants.

(Corresponding) Klimonda A., Kowalska I.
Topic: 
Water and wastewater reuse
The objective of the study was to evaluate the effectiveness of cationic surfactant (Tequat LC90i, TEAQ) removal from aqueous solutions with the use of tubular ceramic ultrafiltration and microfiltration modules. Research included an assessment of the feed solution parameters (surfactant...Read more
Keywords: 
pressure-driven membrane processes, esterquat, fabric softener
Paper ID: 
cest2019_00226

Changes of dissolved oxygen during the caffeine oxidation by photo-Fenton

Villota N., (Corresponding) Lomas J., (Corresponding) Irene C.
Topic: 
Advanced oxidation processes
The aim of this work is to analyse the changes of dissolved oxygen ([DO], mg/L) during the oxidation of caffeine waters by photo-Fenton treatment. The concentration of dosed hydrogen peroxide would be the addition of the stoichiometric [H2O2], which reacts with organic matter ([H2O2]esteq=2.0 mM),...Read more
Keywords: 
caffeine, dissolved oxygen, ferrous ion, kinetic modelling, photo-Fenton
Paper ID: 
cest2019_00071

Colour changes during the carbamazepine oxidation by photo-Fenton

Villota N., (Corresponding) Qullatein H., (Corresponding) Lomas J.
Topic: 
Advanced oxidation processes
Oxidation of waters containing 50.0 mg L-1 of carbamazepine was conducted by a photo-Fenton reagent employing a UV lamp of 150W, at pH=3.0 and T=40°C. The oxidising action of hydrogen peroxide was studied in a range between [H2O2]0=0-15.0 mM. When applying stoichiometric ratios of 2 mol C15H12N2O:...Read more
Keywords: 
acridone, carbamazepine, colour, oxo-carbazepine, photo-Fenton
Paper ID: 
cest2019_00079

The effect of the presence of zinc on the precipitation of CaCO3 from supersaturated solutions

(Corresponding) Koutsoukos P., NATSI P., MOUSTAKI E.
Topic: 
Heavy metals in the environment
Precipitation and dissolution processes of calcium carbonate in natural aquatic systems, are responsible not only for the regulation of pH but also for the transport of pollutants to and from sediments. Of interest in these processes, is the role of the presence of heavy metals in the aquatic...Read more
Keywords: 
calcium carbonate, precipitation of, inhibition of, zinc, adsorption
Paper ID: 
cest2019_00168

Phosphorus and nitrogen recovery from wastewater in the form of struvite: Alternative magnesium sources

(Corresponding) Koutsoukos P., Primikyris G., Siachos K.
Topic: 
Wastewater treatment
Recovery of phosphorus and nitrogen from municipal and other types of wastewater may be achieved through the direct crystallization of struvite (magnesium ammonium phosphate hexahydrate, Mg·NH4·PO4·6H2O). Wastewater deficiency in magnesium makes it necessary for the external addition of magnesium...Read more
Keywords: 
struvite, precipitation of, artificial seawater, magnesia, crystal growth
Paper ID: 
cest2019_00169

The Effect of Different Parameters on Electrochemical Removal of Ampicillin Using New Generation Sn/Sb/Ni-Ti Anodes

(Corresponding) Kurt A., (Corresponding) Yonar T., Shakir F., Helvacıoğlu H., Neşelen E.
Topic: 
Advanced oxidation processes
In this study, it was aimed to investigate the feasibility of new generation and stable Sn/Sb/Ni-Ti anodes for treatment of wastewater containing Ampicillin (AMP) antibiotic by electrochemical oxidation processes. Ampicillin concentration was 0.05 g L-1 in the aqueous solution. Residual ampicillin...Read more
Keywords: 
Sn/Sb/Ni-Ti anodes, electrochemical oxidation, ampicillin, wastewater treatment, anode production
Paper ID: 
cest2019_00384