Conference proceedings

Displaying 1 - 9 of 9 in reduction (remove filter)

CEST Proceedings are published under the ISSN 2944-9820.

TiO2/CoFe2O4/Ag NANOCOMPOSITES FOR PHOTOCATALYTIC REDUCTION OF WATER POLLUTANTS UNDER UV AND SOLAR LIGHT

(Corresponding) Falaras P., Ibrahim I.
Topic: 
Water treatment
Novel ternary catalysts TiO2/CoFe2O4/Ag with variable ferrite content were synthesized, characterized and used for the photocatalytic reduction of Cr+6 pollutant, under UV and visible light illumination. Both TiO2 and CoFe2O4 were synthesized using the sol-gel method followed by hydrothermal...Read more
Keywords: 
Titania/Ferrites/Silver composites; photocatalytic performance; Cr(VI) reduction; Separation.
Paper ID: 
cest2019_00517

Evaluation of calcium polysulfide as a reducing agent for the restoration of a Cr(VI)-contaminated aquifer

(Corresponding) MPOURAS T., PAPASSIOPI N., LAGKOUVARDOS K., MYSTRIOTI C., DERMATAS D.
Topic: 
Efficient water resources management in cr(vi) impacted water bodies
This work aims at investigating the efficiency of applying calcium polysulfide (CPS) as a reducing agent for the decontamination of a heavily Cr(VI)-contaminated aquifer. Series of batch experiments were carried out in order to evaluate the reductive behavior of CPS towards the aqueous and solid...Read more
Keywords: 
Calcium polysulfide; Groundwater; Hexavalent chromium; reduction
Paper ID: 
cest2019_00726

Reduction of Halogenated Organic Compounds in Water: Comparison of Available Reduction Systems based on Cu, Pd and ZVI

(Corresponding) Shee A., Kopinke F., Mackenzie K.
Topic: 
Water treatment
Catalysts on the basis of copper (Cu) and the reducing agent borohydride (BH4-) have been successfully used for reduction of chlorinated aliphatics with low substitution degree which are usually resistant to zero-valent iron (ZVI) and hydrodehalogenation catalysts, such as Pd. Reactivity screening...Read more
Keywords: 
nanoparticles, copper, borohydride, reduction technologies, halogenated organic compounds (HOCs)
Paper ID: 
cest2019_00809

Catalytic reduction of Cr(VI) using recovered Silicon from end-of-life photovoltaic panels as a catalyst

Pavlopoulos C., Kyriakopoulou V., (Corresponding) Papadopoulou K., Lyberatos G.
Topic: 
Wastewater treatment
As installed photovoltaic panels (PVP) approach their end of life, the need for a sustainable recovery plan becomes imperative. This work aims to reuse Silicon from End-of-Life PVP as a potential catalyst/photocatalyst for wastewater treatment. PVPs were pretreated thermally (550°C for 30 min). The...Read more
Keywords: 
Hexavalent Chromium reduction; Photocatalyst; Photovoltaic panel; Silicon Recovery; Wastewater treatment
Paper ID: 
cest2021_00199

Cırcular Economy And Lıfe Cycle Assessment For Wıne Sector

(Corresponding) Matarazzo A., Villari E., Spadaro G., Vazzano A., Zerbo A.
Topic: 
Life cycle analysis (lca)
Wine production contributes to a variety of environmental loads, mainly due to the use of fertilizers and pesticides in the vineyard and to the production of glass bottles. Sicily, in particular, holds the record for the major production of wine in the South of Italy, favored by pedoclimatic...Read more
Keywords: 
Environmental sustainability, LCA, Risk reduction, Green economy, Wine sector
Paper ID: 
cest2021_00329

Green sonochemical route for the synthesis of MOFs for the electrochemical reduction of CO2

(Corresponding) VAITSIS C., KANELLOU E., PANDIS P., SOURKOUNI G., ZORPAS A., (Corresponding) ARGIRUSIS C.
Topic: 
Gas emissions control and utilization
A zinc-based MOF has been prepared by utilizing adipic acid as an aliphatic ditopic linker via both solvothermal and sonochemical methods. The ultrasound irradiation has reduced the reaction time and has led to smaller particle size. The samples were evaluated for their catalytic efficiency by the...Read more
Keywords: 
Carbon Dioxide, Electrocatalysis, Reduction, Metal-Organic Frameworks, Sonochemistry
Paper ID: 
cest2021_00348

The impact of COVID-19 partial lockdown on air pollution levels – A case study of Cyprus

Demetriou M., (Corresponding) Zorpas A.
Topic: 
Covid-19 effects on environmental aspects and urban life
This study aims to analyze the changes in air pollution levels during lockdown measures in Cyprus. Lockdown measures came into force from March 13th 2020, few days after the first COVID-19 case was registered. The study analyses the data from different air quality monitoring stations in Cyprus in...Read more
Keywords: 
COVID-19; Lockdown measures; Air quality; Traffic emission reduction
Paper ID: 
cest2021_00646

CO2 Utilization for Preparation of Carbon Nanostructures

(Corresponding) Giannakopoulou T., Plakantonaki N., Vagenas M., Papailias I., Boukos N., Todorova N., Trapalis C.
Topic: 
Gas emissions control and utilization
The CO2 conversion to valuable materials is a challenging way to manage pollution problems. In the present work, CO2 was used as a feedstock to synthesize solid carbon nanostructures by employing a simple magnesiothermic reduction reaction under constant gas flow in a tube furnace. It was shown...Read more
Keywords: 
CO2 conversion, nanocarbons, metallothermic reduction, Mg
Paper ID: 
cest2021_00765

Agro-Industry Waste Fed Microbial Electrolysis Cell for Biohydrogen Production

(Corresponding) Ghosh U., Gautam R.
Topic: 
Waste-to-energy
The microbial electrolysis cell is gaining advantage over the other biological hydrogen production techniques as it requires less energy for hydrogen generation as compared to the water electrolysis process. The present study aims to assess the aptness of Agro-Industry Waste (AIW) fed membrane-...Read more
Keywords: 
Electro-hydrogenesis, Microbial Electrolysis Cell, Electrode Modification, Over-potential Reduction, Hydrogen Evolution Reaction
Paper ID: 
cest2023_00476