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RESEARCH PROGRAM
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Research Units
Similar research programs:
- 1 - INNOVATIVE CATALYTIC PROCESSES FOR THE SELECTIVE OXIDATION AND REDUCTION OF GLYCEROL IN WATER: STUDIES OF REACTION MECHANISMS AND KINETICS FOR THE PROCESS OPTIMISATION
- 2 - ELECTROCATALYSIS AND ELECTROSYNTHESIS
- 3 - Contribution to atmospheric CO2 mitigation at the point source
- 4 - Catalytic/photocatalytic oxidative activation in organic synthesis
- 5 - Removal of priority pollutants in advanced wastewater treatment processes for industrial wastewaters and liquid wastes.
- 6 - ADVANCED PROCESSES FOR REMEDIATION OF CONTAMINATED GROUNDWATER
- 7 - Multiscale modelling and development of process reactors for polymeric nanoparticle precipitation
- 8 - Nutrients and CO2 emissions controll in bio-hythane generation from biomass anaerobic digestion
- 9 - Experimental analysis, modeling and simulations of bioslurry reactors for soil remediation
- 10 - Polymer Processing for Biomedical Applications By Innovative and Sustenaible Technologies
Scientific and education field classification
International Patent Classification
- CHEMISTRY; METALLURGY
- ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR (electrodialysis, electro-osmosis, separation of liquids by electricity B01D; [N: separation of isotopes by electrochemical methods B01D59/38]; working of metal by the action of a high concentration of electric current B23H; treatment of water, waste water or sewage by electrochemical methods C02F1/46; surface treatment of metallic material or coating involving at least one process provided for in class C23 and at least one process covered by this class C23C28/00, C23F17/00; anodic or cathodic protection C23F; single-crystal growth C30B; metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04; electrochemical methods of analysis G01N; electrochemical measuring, indicating or recording devices G01R; electrolytic circuit elements, e.g. capacitors, H01G; electrochemical current or voltage generators H01M)
- ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (settling tanks, filtering, e.g. sand filters or screening devices, B01D)
- TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)
- ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR (electrodialysis, electro-osmosis, separation of liquids by electricity B01D; [N: separation of isotopes by electrochemical methods B01D59/38]; working of metal by the action of a high concentration of electric current B23H; treatment of water, waste water or sewage by electrochemical methods C02F1/46; surface treatment of metallic material or coating involving at least one process provided for in class C23 and at least one process covered by this class C23C28/00, C23F17/00; anodic or cathodic protection C23F; single-crystal growth C30B; metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04; electrochemical methods of analysis G01N; electrochemical measuring, indicating or recording devices G01R; electrolytic circuit elements, e.g. capacitors, H01G; electrochemical current or voltage generators H01M)
Geographical classification
- Region: Lazio
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Keywords
ELECTROCHEMICAL TREATMENTS, INDUSTRIAL EFFLUENTS, ADVANCED ELECTROCHEMICAL OXIDATION, ELECTROFENTON, COMBINED OXIDATION PROCESSES, ELECTROCHEMICAL MEDIATORS, ELECTROCHEMICAL TECHNOLOGIES ENGINEERING, PILOT PLANTEngineering of advanced electrochemical processes for the treatment of industrial effluents
Università degli Studi di Roma "La Sapienza"Abstract
In the last years particular attention has been devoted to the different methods to oxidise organic and inorganic substances in order to meet the strict water quality standards. This has caused an increasing development of industrial and municipal wastewater treatments, which requires nowadays the availability of innovative technologies in addition to traditional biological and physico-chemical methods. Electrochemistry offers, unique reaction conditions, as the working electrode has at the same time the features of an easily recyclable heterogeneous catalyst and the capacity of feeding quantitatively and selectively the simplest and most economic reagent: the electron. This allows to operate under extremely mild operating conditions and, moreove to achieve a relatively high efficiency even when small plants are used. In this research direct, indirect, mediated and combined electrolytic processes will be opimised and tested for the removal of pollutants from industrial effluents both organic (tannins, chlorinated saturated and unsaturated hydrocarbons wastewater from plastics industry whith ethylene glycol) and inorganic (wastewater from the manufacturing of phosphorus-based flame retardant and ammonia nitrogen), for whom convenient remediation actions are not already available.This creates the need for novel methods and processes to be proposed and their engineering design criteria established.
An economic analysis will complete an overall feasibility study >>>
Principal Investigator
Carlo Merli Università degli Studi di ROMA "La Sapienza"Research Objectives
The sustainable development of civil and industrial activities involves a suitable energy management and a responsible protection of the environment. Applied electrochemistry is rapidly assuming a key role in the development of environmentally friendly processes and processes for energy conversion and for exploitation of renewable energetic resources. The electrochemical reactor, as widely stressed, offers unique reaction conditions, since electrodes have simultaneously the characteristics of a heterogeneous catalyst, even recyclable, and the capacity to dose, in a quantitative and very selective way, the simplest and cheapest reagent, the electron: thus, unlike the most usual classical methods, extremely soft operation conditions are ensured.This has made it possible to apply electrocatalytic processes to several fields of industrial activities (chemical, pharmaceutical, food industry, etc.), to the environmental protection (effluent treatment, soil remediation, etc.), to the production, conversion and accumulation of energy (cells and batteries, fuel cells, extra-pure hydrogen production, super condensers).
There exists a vast literature on feasibility studies for destruction of pollutants from industrial wastewater by means of electrochemically generated homogeneous phase mediators however the available studies arrive at most at determining the kinetics of pollutants destruction at ambient temperature, without attempting to optimise the yield of the >>>
Timescale
24 monthsNational and international background
Several innovative technologies have been recently considered as a possible alternative for treating industrial wastewaters containing pollutants recalcitrant to traditional removal methods. Electrochemical treatments appear to be very promising [1-4], due to the ease in controlling the process of either oxidation or reduction, by “dosing” the electron as the reagent. Further the electrode assumes the role of a heterogeneous catalyst, easily reusable.Electrochemical treatment is characterised by several advantages: mild operating conditions (room temperature, ambient pressure), easy control of process kinetics (the electric current or the electric potential applied can be easily modulated), no addition of chemical reactants is required, in general. In addition, electrochemical methods offer a relatively high abatement efficiency even in low-scale plant, with a noteworthy elasticity of use. Electrochemical techniques proved efficient in destroying a variety of pollutants as: ammonia [5], nitrites [6], benzoquinone [7], benzene [8], thiourea dioxide [9], phenols [10] , chlorophenols[11], dyes [12], formaldehyde [13], cyanides [14], toluene [15], alcohols [16-18], hydrocarbons [19].
A recent trend is to electrogenerate oxidant agents such as hydrogen peroxide, with the advantage not to leave inorganic residue after reaction with organics. Active free radicals with hard oxidizing properties may be produced by adding ferrous ions according to fenton reaction >>>
