A5016640314- Advanced oxidation water treatment
- Industrial Gas Emission Control
- Advanced Photocatalysis Techniques
- Catalytic Processes in Materials Science
- Water Quality Monitoring and Analysis
- Environmental remediation with nanomaterials
- Wastewater Treatment and Reuse
- Enzyme-mediated dye degradation
- Nanomaterials for catalytic reactions
- TiO2 Photocatalysis and Solar Cells
- Water Treatment and Disinfection
- Edible Oils Quality and Analysis
- Electrochemical Analysis and Applications
- Pharmaceutical and Antibiotic Environmental Impacts
- Iron oxide chemistry and applications
- Minerals Flotation and Separation Techniques
- Healthcare and Environmental Waste Management
- Nanoparticles: synthesis and applications
- Water-Energy-Food Nexus Studies
- Innovative Microfluidic and Catalytic Techniques Innovation
- Cassava research and cyanide
- Municipal Solid Waste Management
- Oil, Gas, and Environmental Issues
- Extraction and Separation Processes
- Advanced Nanomaterials in Catalysis
Universidade do Porto
2015-2025
The coagulation/flocculation treatment using FeSO4·7H2O as a coagulant is evaluated in this work for the removal of organic compounds and colour from synthetic effluents simulating cotton, acrylic polyester dyeing wastewaters. dose, temperature, pH, stirring speed time that maximized dissolved carbon (DOC) each effluent are determined coagulation process. effect speed, dose flocculant (Magnafloc 155 or Superfloc C-573) on flocculation stage also pretreated by at optimal conditions previously...
The removal of p-nitrophenol (PNP) from wastewater was evaluated by the activated persulfate process using different materials - carbon xerogels (XG), nanotubes (CNT), and (AC) -, also such doped with nitrogen (XGM, CNTM ACM). These were impregnated 2 wt.% iron tested in oxidative to assess influence their textural surface chemical properties. carbon-based materials' properties efficiencies adsorption processes; adsorption, higher specific areas (SBET), i.e. AC (824 m2/g) Fe/AC (807 m2/g),...
The organic matter mineralization, decolorization, biodegradability improvement, and toxicity reduction of an industrial cotton dyeing wastewater were investigated. Different treatment approaches, including single integrated processes, studied, namely, coagulation/flocculation per se its combination with Fenton oxidation (approach 1), the process alone 2) integration either 3) or biological in a sequential batch reactor 4). All approaches provided that meets Portuguese legislated discharge...
Processes optimisation is one of the main issues to take into account for design new chemical processes applied wastewater treatment plants (WWTPs). Particularly, it can be achieved using experiments (DoE) tools, and represent progress in process performance cost reduction. In this work, an advanced oxidation (AOP), namely Fenton's process, degrade a nitrophenol model compound, i.e., 4-nitrophenol (4NP), lab-scale batch reactor. To optimise parameters (such as temperature reaction - T,...
The degradation via the photo-Fenton process of dyes and organic compounds present in acrylic, cotton, polyester dyeing wastewaters was investigated, aiming at reducing consumption chemicals, as compared to dark Fenton process, while simultaneously minimizing energy costs by using simulated solar radiation. reduction hydrogen peroxide dose is limited need achieving treated effluents complying with discharge limits, but for operating are excessive. associated use artificial radiation (17.4,...
Activated carbon (AC), xerogel (XG), and nanotubes (CNT), with without N-functionalities, were prepared. Catalysts obtained after impregnation of these materials 2 wt.% iron. The characterized in terms N2 adsorption at −196 °C, elemental analysis (EA), the pH point zero charge (pHPZC). p-nitrophenol (PNP) degradation mineralization (assessed total organic carbon–TOC–removal) evaluated during adsorption, catalytic wet peroxidation (CWPO), Fenton process. textural chemical properties...
The growing and unprecedented water crisis leads to the need find alternative resources, reuse of treated urban wastewater is an excellent approach. Accordingly, in this work, disinfection a secondary effluent (W) discharged from treatment plant (WWTP) by hydrogen peroxide combined with radiation (H2O2+UV/visible) was studied aim obtaining that can be reused. Firstly, effect alone, per se H2O2+UV/Visible process inactivation enterobacteria were assessed. It found oxidant alone not efficient;...
This study aimed to assess the degradation and mineralization of toluene present in a gas stream by application liquid phase persulfate-based advanced oxidation process bubble column reactor. Up authors' knowledge, this is first time where oxidizing agent has been activated through presence transition metal ions pH change, treat toluene-containing stream. A detailed parametric was performed, with objective analyzing effect some main operating variables performance, varying parameters such as...