scholarly journals Removal Of Phenol From Wastewater By Using Low-Cost Catalyst From Metal Production

2014 ◽  
Vol 22 (341) ◽  
pp. 55-59
Author(s):  
Blanka Galbičková ◽  
Maroš Soldán ◽  
Michal Belčík ◽  
Karol Balog
Keyword(s):  
Uv Radiation ◽  
Red Mud ◽  
Advanced Oxidation Processes ◽  
Low Cost ◽  
Advanced Oxidation ◽  
Emerging Technology ◽  
Mercury Lamp ◽  
Metal Production ◽  
Oxidation Processes ◽  
Uv Photodegradation

Abstract Utilization of AOPs (Advanced oxidation processes) as an emerging technology for removing of pollutants from wastewater is developed. In this paper, UV photodegradation was used for removing of phenol from wastewater. As a source of UV radiation medium pressure mercury lamp with output 400W was used. The influence of low-cost catalysts on this process was also monitored. Wastes from metal production, red mud and black nickel mud, were used as catalysts.

Using of AOP Process for Phenol Removal from Wastewater

2013 ◽  
Vol 864-867 ◽  
pp. 1690-1693 ◽  
Author(s):  
Blanka Galbičková ◽  
Lenka Blinová ◽  
Maroš Soldán
Keyword(s):  
Red Mud ◽  
Industrial Wastewater ◽  
Chemical Method ◽  
Advanced Oxidation Processes ◽  
Phenol Degradation ◽  
Emerging Technology ◽  
Phenol Removal ◽  
Metal Production ◽  
Oxidation Processes ◽  
Physico Chemical

Advanced oxidation processes (AOPs) have been developed as an emerging technology for hazardous organic treatment in industrial wastewater. For phenol removing from wastewater traditional disinfection by chlorine is not appropriate because of generating more toxic pollutants - chlorophenols so AOPs are widely used for disinfection of this kind of water. In this paper for phenol degradation is used physico-chemical method (ozonization). Also influence of catalyst is monitored. As catalyst red mud and black nickel mud are used. These catalysts are waste from metal production. Results from analyses are compared.

scholarly journals Persulfate Process Activated by Homogeneous and Heterogeneous Catalysts for Synthetic Olive Mill Wastewater Treatment

Water ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3010
Author(s):  
Eva Domingues ◽  
Maria João Silva ◽  
Telma Vaz ◽  
João Gomes ◽  
Rui C. Martins
Keyword(s):  
Phenolic Compounds ◽  
Red Mud ◽  
Advanced Oxidation Processes ◽  
Heterogeneous Catalysts ◽  
Advanced Oxidation ◽  
Iron Sulfate ◽  
Toxicity Tests ◽  
Oxidation Processes ◽  
Toc Removal ◽  
Olive Mill

Wastewaters from the olive oil industry are a regional environmental problem. Their phenolic content provides inherent toxicity, which reduces the treatment potential of conventional biological systems. In this study, Sulfate Radical based Advanced Oxidation Processes (SRbAOPs) are compared with advanced oxidation processes (namely Fenton’s peroxidation) as a depuration alternative. Synthetic olive mill wastewaters were submitted to homogeneous and heterogeneous SRbAOPs using iron sulfate and solid catalysts (red mud and Fe-Ce-O) as the source of iron (II). The homogenous process was optimized by testing different pH values, as well as iron and persulfate loads. At the best conditions (pH 5, 300 mg/L of iron and 600 mg/L of persulfate), it was possible to achieve 39%, 63% and 37% COD, phenolic compounds and TOC removal, respectively. The catalytic potential of a waste (red mud) and a laboratory material (Fe-Ce-O) was tested using heterogenous SRbAOPs. The best performance was achieved by Fe-Ce-O, with an optimal load of 1600 mg/L. At these conditions, 27%, 55% and 5% COD, phenolic compounds and TOC removal were obtained, respectively. Toxicity tests on A. fischeri and L. sativum showed no improvements in toxicity from the treated solutions when compared with the original one. Thus, SRbAOPs use a suitable technology for synthetic OMW.

scholarly journals Organic Degradation Potential of Real Greywater Using TiO2-Based Advanced Oxidation Processes

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2811
Author(s):  
Dheaya Alrousan ◽  
Arsalan Afkhami ◽  
Khalid Bani-Melhem ◽  
Patrick Dunlop
Keyword(s):  
Advanced Oxidation Processes ◽  
Low Cost ◽  
Advanced Oxidation ◽  
Molar Ratio ◽  
Organic Fraction ◽  
Viable Option ◽  
Oxidation Processes ◽  
Toc Removal ◽  
Uva Irradiation ◽  
Efficiency Parameter

In keeping with the circular economy approach, reclaiming greywater (GW) is considered a sustainable approach to local reuse of wastewater and a viable option to reduce household demand for freshwater. This study investigated the mineralization of total organic carbon (TOC) in GW using TiO2-based advanced oxidation processes (AOPs) in a custom-built stirred tank reactor. The combinations of H2O2, O3, and immobilized TiO2 under either dark or UVA irradiation conditions were systematically evaluated—namely TiO2/dark, O3/dark (ozonation), H2O2/dark (peroxidation), TiO2/UVA (photocatalysis), O3/UVA (Ozone photolysis), H2O2/UVA (photo-peroxidation), O3/TiO2/dark (catalytic ozonation), O3/TiO2/UVA (photocatalytic ozonation), H2O2/TiO2/dark, H2O2/TiO2/UVA, H2O2/O3/dark (peroxonation), H2O2/O3/UVA (photo-peroxonation), H2O2/O3/TiO2/dark (catalytic peroxonation), and H2O2/O3/TiO2/UVA (photocatalytic peroxonation). It was found that combining different treatment methods with UVA irradiation dramatically enhanced the organic mineralization efficiency. The optimum TiO2 loading in this study was observed to be 0.96 mg/cm2 with the highest TOC removal (54%) achieved using photocatalytic peroxonation under optimal conditions (0.96 mg TiO2/cm2, 25 mg O3/min, and 0.7 H2O2/O3 molar ratio). In peroxonation and photo-peroxonation, the optimal H2O2/O3 molar ratio was identified to be a critical efficiency parameter maximizing the production of reactive radical species. Increasing ozone flow rate or H2O2 dosage was observed to cause an efficiency inhibition effect. This lab-based study demonstrates the potential for combined TiO2-AOP treatments to significantly reduce the organic fraction of real GW, offering potential for the development of low-cost systems permitting safe GW reuse.

Ilmenite (FeTiO 3 ) as low cost catalyst for advanced oxidation processes

2016 ◽  
Vol 4 (1) ◽  
pp. 542-548 ◽  
Author(s):  
P. García-Muñoz ◽  
G. Pliego ◽  
J.A. Zazo ◽  
A. Bahamonde ◽  
J.A. Casas
Keyword(s):  
Advanced Oxidation Processes ◽  
Low Cost ◽  
Advanced Oxidation ◽  
Oxidation Processes

scholarly journals Advanced oxidation processes: a review regarding the fundamentals and applications in wastewater treatment and industrial wastewater

2016 ◽  
Vol 11 (2) ◽  
pp. 387 ◽  
Author(s):  
Karla Santos De Araújo ◽  
Raissa Antonelli ◽  
Beatriz Gaydeczka ◽  
Ana Claudia Granato ◽  
Geoffroy Roger Pointer Malpass
Keyword(s):  
Industrial Wastewater ◽  
Advanced Oxidation Processes ◽  
Low Cost ◽  
Advanced Oxidation ◽  
Industrial Applications ◽  
Pollutant Degradation ◽  
Oxidation Processes ◽  
Advantages And Disadvantages ◽  
Available Energy ◽  
Theoretical Reasoning

Contamination of water by toxic and/or recalcitrant species has great environmental impacts. In this context, Advanced Oxidation Processes (AOPs) - technologies that principally use the hydroxyl radical (HO●) for oxidation - have emerged as promising alternatives in treating urban and industrial wastewaters. This study reviewed the literature on POAs and presented data regarding the efficiency of these processes in pollutant degradation, comparing the theoretical reasoning and its industrial applications. The fundamentals and major applications of AOPs (chemical, photochemical, electrochemical, sonochemical and ozone-based processes), as well as their advantages and disadvantages, are described in this review. AOPs have been considered an effective alternative from a technical, economic and environmental viewpoint for the degradation of pollutants in effluents and industrial wastewater, despite having limitations such as high cost of available energy sources, development of new low-cost catalytic materials and construction of full-scale reactors. It is greatly important to the industrial application of AOPs to optimize the effectiveness of these factors.

scholarly journals Decomposition of two haloacetic acids in water using UV radiation, ozone and advanced oxidation processes

2009 ◽  
Vol 162 (2-3) ◽  
pp. 1243-1248 ◽  
Author(s):  
Kunping Wang ◽  
Jinsong Guo ◽  
Min Yang ◽  
Hirotsuji Junji ◽  
Rongsen Deng
Keyword(s):  
Uv Radiation ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Haloacetic Acids ◽  
Oxidation Processes

Degradation of protocatechuic acid by two advanced oxidation processes: Ozone/UV radiation and H2O2UV radiation

1996 ◽  
Vol 30 (7) ◽  
pp. 1597-1604 ◽  
Author(s):  
F.Javier Benitez ◽  
Jesus Beltran-Heredia ◽  
Juan L. Acero ◽  
Teresa Gonzalez
Keyword(s):  
Uv Radiation ◽  
Advanced Oxidation Processes ◽  
Protocatechuic Acid ◽  
Advanced Oxidation ◽  
Oxidation Processes

scholarly journals Výskyt pesticídnych látok vo vodnom prostredí a ich odstraňovanie z pitných vôd pomocou pokročilých oxidačných procesov

Entecho ◽  
2020 ◽  
Vol 3 (1) ◽  
pp. 1-5
Author(s):  
Tamara Pacholská ◽  
Pavla Šmejkalová
Keyword(s):  
Hydrogen Peroxide ◽  
Drinking Water ◽  
Activated Carbon ◽  
Water Resources ◽  
Water Supply ◽  
Uv Radiation ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Oxidation Processes ◽  
Intensive Use

Intenzívne používanie pesticídnych látok spôsobilo na mnohých miestach vážne problémy v ekosystéme, najmä čo sa týka vodných zdrojov, kam sa tieto látky dostávajú. Keďže klasickou vodárenskou technológiou nie je možné pesticídy z vody odstraňovať, nachádzajú sa tak tieto látky v nadlimitných koncentráciách v pitných vodách. Preto je nutné navrhnúť technológiu, ktorá bude v ich odstraňovaní účinná. Ako vhodné sa ukazujú pokročilé oxidačné procesy (AOPs) v kombinácii s granulovaným aktívnym uhlím (GAU). Cieľom tohto experimentu bolo porovnať účinok ozonizácie a pokročilých oxidačných procesov, z ktorých sa overovala kombinácia ozónu s UV žiarením (O3 + UV) a ozónu s peroxidom vodíka (O3 + H2O2) s následnou sorpciou na GAU. Abstract (en) Intensive use of pesticides has caused serious problems in the ecosystem in many places, especially in terms of the water resources to which pesticides enter. It is not possible to remove pesticides from water using conventional water supply technology, so these substances are found in above-limit concentrations in drinking water. Therefore, it is necessary to design a technology that will be effective in removing them. Advanced oxidation processes (AOPs) in combination with granular activated carbon (GAU) prove to be suitable. The aim of this experiment was to compare the effect of ozonation and advanced oxidation processes, which verified the combination of ozone with UV radiation (O3 + UV) and ozone with hydrogen peroxide (O3 + H2O2) followed by sorption on GAU.

scholarly journals Performance Assessment of Micropollutants Removal From Water Using Advanced Oxidation Processes

2020 ◽  
Vol 16 ◽  
Keyword(s):  
Advanced Oxidation Processes ◽  
Global Climate ◽  
Low Cost ◽  
Reaction Times ◽  
Advanced Oxidation ◽  
Change Scenario ◽  
Photo Oxidation ◽  
Oxidation Processes ◽  
Atrazine Concentration ◽  
Removal Efficiencies

In a global climate change scenario, reliable access to clean and safe water for all remains a great worldwide challenge for the twenty first century, as one of the most ambitious targets of several Sustainable Development Goals (SDG) established in the UN Agenda 2030. The increasing presence in the urban aquatic ecosystems of priority pollutants and contaminants of emerging concerning (CECs) have brought new challenges to the existing water treatment systems (WTS) concerning with public health protection and the of drinking water sources preservation. Advanced oxidation processes (AOPs) have been widely studied because of their potential as a complementary or alternative process to conventional wastewater treatment. Several AOPs using nanomaterials as photocatalyst can be particularly effective in the degradation of many toxic micropollutants, and enhance the multifunctionality, versatility and sustainability of WTS. This work presents a synthesis of the major results obtained in several pilot and lab-scale studies aiming to assess the performance of different low-cost catalytic processes used for antibiotic and pesticide removal. For each photo-oxidation reactors, different test scenarios are defined in order to evaluate the effects of several abiotic and hydraulic parameters on process kinetics and removal efficiencies. The experimental results were very promising, because antibiotic removal efficiencies achieved the maximum value of 96% for the photo-oxidation by water columns with suspended TiO2 nanoparticles, and 98% for the photocatalytic filtration performed by a porous medium coated with TiO2. In the photoelectrocatalytic reactor, the atrazine concentration has been fully removed for reaction times between 35 and 95 minutes.

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