Combination of chemical oxidation-membrane filtration processes for the elimination of phenyl-ureas in water matrices

2009 ◽  
Vol 84 (12) ◽  
pp. 1883-1893 ◽  
Author(s):  
F. Javier Benitez ◽  
Juan L. Acero ◽  
Francisco J. Real ◽  
Carolina Garcia
Keyword(s):  
Membrane Filtration ◽  
Chemical Oxidation

Carbon–titanium dioxide (C/TiO2) nanofiber composites for chemical oxidation of emerging organic contaminants in reactive filtration applications

2021 ◽  
Vol 8 (3) ◽  
pp. 711-722
Author(s):  
Katherine E. Greenstein ◽  
Matthew R. Nagorzanski ◽  
Bailey Kelsay ◽  
Edgard M. Verdugo ◽  
Nosang V. Myung ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Water Treatment ◽  
Organic Contaminants ◽  
Membrane Filtration ◽  
Titanium Dioxide Nanoparticles ◽  
Chemical Oxidation ◽  
Tio2 Nanofiber ◽  
System P ◽  
Filtration System ◽  
Emerging Organic Contaminants

Electrospun carbon nanofibers with integrated titanium dioxide nanoparticles are used for water treatment in a photoactive membrane filtration system.

Introduction to Leachate Treatment

2015 ◽  
pp. 200-218
Author(s):  
Amin Mojiri ◽  
Siti Fatihah Binti Ramli ◽  
Wan Izatul Saadiah Binti Wan Kamar
Keyword(s):  
Landfill Leachate ◽  
Membrane Filtration ◽  
Chemical Precipitation ◽  
Electrochemical Treatment ◽  
Chemical Oxidation ◽  
Treatment Technique ◽  
Leachate Treatment ◽  
Exchange Adsorption ◽  
Suitable Treatment ◽  
Physical And Chemical

Leachate is created while water penetrates through the waste in a landfill, carrying some forms of pollutants. The goal of this chapter is the introduction to leachate treatment. Biological, physical, and chemical treatments of leachate are the most common methods. The biological techniques in leachate treatment are studied. The physical-chemical ways for landfill leachate treatment like chemical precipitation, chemical oxidation, coagulation–flocculation, membrane filtration, ion exchange, adsorption and electrochemical treatment are studied. The landfill leachate properties, technical applicability and constraints, effluent discharge alternatives, cost-effectiveness, regulatory requirements and environmental impact are important factors for selection of the most suitable treatment technique for landfill leachate treatment.

scholarly journals TREATMENT TECHNOLOGIES OF PRODUCED WATER FROM OIL AND GAS EXTRACTION: A REVIEW

2021 ◽  
Vol 25 (Special) ◽  
pp. 3-130-3-148
Author(s):  
Anaheed S. Hameed ◽  
◽  
Mohammed N. Abbas ◽  
Keyword(s):  
Membrane Filtration ◽  
Oil And Gas ◽  
Produced Water ◽  
Inorganic Compounds ◽  
Chemical Oxidation ◽  
Gas Extraction ◽  
Biological Processes ◽  
Physical Absorption ◽  
Exploration And Production ◽  
Treatment Technologies

Exploration and production of oil and gas are two operations that have the ability to damage and polluted the environment. The most significant waste created by these operations is produced water. Since the produced water includes toxic pollutants in both organic and inorganic compounds, produced water from oil and gas extraction cannot be discharged directly into the environment. Uncontrolled discharge can cause damage to the environment, including the loss of marine and plant life. Until being discharged into the environment, the produced water must be treated to meet the quality requirements. This article reviewed the sources, characteristics, and extent of pollution caused by oil and gas producing water, as well as different technologies for treating or disposing it. Physical (absorption, membrane filtration etc.), chemical (oxidation and sedimentation) and biological processes can all be used to treat the produced water (activated sludge, biological air filters etc.) Because no single technology can satisfy the acceptable effluent properties, two or more treatment systems can be used in a sequential process.

Introduction to Leachate Treatment

2020 ◽  
pp. 157-176
Author(s):  
Amin Mojiri ◽  
Siti Fatihah Binti Ramli ◽  
Wan Izatul Saadiah Binti Wan Kamar
Keyword(s):  
Landfill Leachate ◽  
Membrane Filtration ◽  
Chemical Precipitation ◽  
Electrochemical Treatment ◽  
Chemical Oxidation ◽  
Treatment Technique ◽  
Leachate Treatment ◽  
Exchange Adsorption ◽  
Suitable Treatment ◽  
Physical And Chemical

Leachate is created while water penetrates through the waste in a landfill, carrying some forms of pollutants. The goal of this chapter is the introduction to leachate treatment. Biological, physical, and chemical treatments of leachate are the most common methods. The biological techniques in leachate treatment are studied. The physical-chemical ways for landfill leachate treatment like chemical precipitation, chemical oxidation, coagulation–flocculation, membrane filtration, ion exchange, adsorption and electrochemical treatment are studied. The landfill leachate properties, technical applicability and constraints, effluent discharge alternatives, cost-effectiveness, regulatory requirements and environmental impact are important factors for selection of the most suitable treatment technique for landfill leachate treatment.

Integration between chemical oxidation and membrane thermophilic biological process

2010 ◽  
Vol 61 (1) ◽  
pp. 227-234 ◽  
Author(s):  
G. Bertanza ◽  
M. C. Collivignarelli ◽  
B. M. Crotti ◽  
R. Pedrazzani
Keyword(s):  
Economic Evaluation ◽  
Activated Sludge ◽  
Experimental Work ◽  
Membrane Filtration ◽  
Biological Process ◽  
Chemical Oxidation ◽  
Experimental Results ◽  
Global Performance ◽  
Aerobic Process ◽  
Liquid Wastes

Full scale applications of activated sludge thermophilic aerobic process for treatment of liquid wastes are rare. This experimental work was carried out at a facility, where a thermophilic reactor (1,000 m3 volume) is operated. In order to improve the global performance of the plant, it was decided to upgrade it, by means of two membrane filtration units (ultrafiltration –UF-, in place of the final sedimentation, and nanofiltration –NF-). Subsequently, the integration with chemical oxidation (O3 and H2O2/UV processes) was taken into consideration. Studied solutions dealt with oxidation of both the NF effluents (permeate and concentrate). Based on experimental results and economic evaluation, an algorithm was proposed for defining limits of convenience of this process.

Bioadsorption of Multiple Heavy Metal Ions by Rhizophora Apiculate sp. and Elaesis Guineensis sp.

2017 ◽  
Vol 14 (1) ◽  
pp. 15
Author(s):  
M.B. Nicodemus Ujih ◽  
Mohammad Isa Mohamadin ◽  
Milla-Armila Asli ◽  
Bebe Norlita Mohammed
Keyword(s):  
Heavy Metal ◽  
Metal Ions ◽  
Removal Efficiency ◽  
Heavy Metal Ions ◽  
Agricultural Waste ◽  
Living Organism ◽  
Heavy Metal Concentration ◽  
Industrial Area ◽  
Electrochemical Treatment ◽  
Chemical Oxidation

Heavy metal ions contamination has become more serious which is caused by the releasing of toxic water from industrial area and landfill that are very harmful to all living organism especially human and can even cause death if contaminated in small amount of heavy metal concentration. Currently, peoples are using classic method namely electrochemical treatment, chemical oxidation/reduction, chemical precipitation and reverse osmosis to eliminate the metal ions from toxic water. Unfortunately, these methods are costly and not environmentally friendly as compared to bioadsorption method, where agricultural waste is used as biosorbent to remove heavy metals. Two types of agricultural waste used in this research namely oil palm mesocarp fiber (Elaesis guineensis sp.) (OPMF) and mangrove bark (Rhizophora apiculate sp.) (MB) biomass. Through chemical treatment, the removal efficiency was found to improve. The removal efficiency is examined based on four specification namely dosage, of biosorbent to adsorb four types of metals ion explicitly nickel, lead, copper, and chromium. The research has found that the removal efficiency of MB was lower than OPMF; whereas, the multiple metals ions removal efficiency decreased in the order of Pb2+ > Cu2+ > Ni2+ > Cr2+.

Effects of Wet Chemical Oxidation on Surface Functionalization and Morphology of Highly Oriented Pyrolytic Graphite

2020 ◽  
Author(s):  
Mikhail Trought ◽  
Isobel Wentworth ◽  
Timothy Leftwich ◽  
Kathryn Perrine
Keyword(s):  
Surface Functionalization ◽  
Functional Group ◽  
Pyrolytic Graphite ◽  
Surface Oxidation ◽  
Chemical Oxidation ◽  
Synthesis Methods ◽  
Acid Solutions ◽  
Highly Oriented Pyrolytic Graphite ◽  
Wet Chemical ◽  
Surface Morphologies

The knowledge of chemical functionalization for area selective deposition (ASD) is crucial for designing the next generation heterogeneous catalysis. Surface functionalization by oxidation was studied on the surface of highly oriented pyrolytic graphite (HOPG). The HOPG surface was exposed to with various concentrations of two different acids (HCl and HNO3). We show that exposure of the HOPG surface to the acid solutions produce primarily the same -OH functional group and also significant differences the surface topography. Mechanisms are suggested to explain these strikingly different surface morphologies after surface oxidation. This knowledge can be used to for ASD synthesis methods for future graphene-based technologies.

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