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WO2012115509A1 - Dispositif et procédé de traitement photocatalytique d'un fluide - Google Patents

Dispositif et procédé de traitement photocatalytique d'un fluide Download PDF

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Publication number
WO2012115509A1
WO2012115509A1 PCT/NL2012/050095 NL2012050095W WO2012115509A1 WO 2012115509 A1 WO2012115509 A1 WO 2012115509A1 NL 2012050095 W NL2012050095 W NL 2012050095W WO 2012115509 A1 WO2012115509 A1 WO 2012115509A1
Authority
WO
WIPO (PCT)
Prior art keywords
photocatalyst
light source
container
fluid
light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/NL2012/050095
Other languages
English (en)
Inventor
Simon Bakker
Johannes Kuipers
Sybrandus Jacob Metz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STICHTING WETSUS CENTRE OF EXCELLENCE FOR SUSTAINABLE WATER TECHNOLOGY
Original Assignee
STICHTING WETSUS CENTRE OF EXCELLENCE FOR SUSTAINABLE WATER TECHNOLOGY
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by STICHTING WETSUS CENTRE OF EXCELLENCE FOR SUSTAINABLE WATER TECHNOLOGY filed Critical STICHTING WETSUS CENTRE OF EXCELLENCE FOR SUSTAINABLE WATER TECHNOLOGY
Publication of WO2012115509A1 publication Critical patent/WO2012115509A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/063—Titanium; Oxides or hydroxides thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
    • B01J35/39—Photocatalytic properties
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/32—Details relating to UV-irradiation devices
    • C02F2201/322—Lamp arrangement
    • C02F2201/3225—Lamps immersed in an open channel, containing the liquid to be treated
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/32—Details relating to UV-irradiation devices
    • C02F2201/322—Lamp arrangement
    • C02F2201/3227—Units with two or more lamps
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00—Use of specific compounds during water treatment
    • C02F2305/10—Photocatalysts

Definitions

  • the invention relates to a device for photocatalytic treatment of a fluid such as water .
  • Treatment of a fluid with a photocatalyst is known as such. Due to the presence of a photocatalyst and light of a suitable wavelength a chemical reaction occurs or a reaction is accelerated.
  • a drawback of the known devices is that the required light has a limited penetration depth. Particularly when UV light is applied in water, the penetration depth of the light is low. In addition, a part of the light can be absorbed by photocatalyst particles or other absorbent particles present in the fluid. The treatment hereby has little effectiveness.
  • An object of the invention is to obviate or reduce these problems and to provide an effective and efficient device for photocatalytic treatment of a fluid.
  • the device comprising:
  • - a container for holding a fluid with at least one inlet and at least one outlet;
  • At least one light source placed in the container and comprising a converter, which converter during use converts the field generated by the field generator to light;
  • the photocatalytic treatment of a fluid is particularly understood to mean the decomposition of organic and
  • the fluid is preferably a liquid such as water, although the fluid can alternatively be a gas.
  • the field generated by the field generator for instance a magnetic field or a radio wave, is converted during use to light by the converter.
  • the light source can hereby be provided in wireless manner.
  • the energy supply of the light source is wireless . This has the advantage that no wires or cables need be used. This is particularly advantageous for large-scale applications.
  • a plurality of light sources can be provided movably in a fluid in the container without their freedom of movement being limited by a wire or cable . In addition, wires are prevented from becoming entangled.
  • Providing an electrical, magnetic or electromagnetic field ensures that all light sources in the reactor, that in use are in contact with the fluid to be treated, are sufficiently powered such that these sources in the reactor treat the fluid correctly throughout the reactor without significantly restricting the dimensions of the reactor as is the case when providing a light source outside the reactor. This is achieved by providing a field in the reactor that is entirely, or at least to a sufficient extent, independent from the position inside the reactor. This ensures that all of the light sources that are provided in the reactor are able to receive sufficient power to produce light .
  • the light source emits light with a
  • wavelength preferably between 31b-400 nm.
  • the at least one light source comprises an electrically powered light source, wherein preferably the converter is arranged to convert the field to a voltage or current for powering the electric powered light source during use.
  • the field is converted to light by converting the field to a voltage or current and subsequently converting the voltage or current to light.
  • the field generator Preferably, during use the field generator generates an electrical, magnetic or an electromagnetic field with a wavelength that enables the field to penetrate the entire fluid volume in the container.
  • This has the advantage that the field can be used throughout the volume to power the at least one light source.
  • the energy transfer is energy efficient.
  • the wavelength of the electromagnetic field will be outside the visible and/or UV part of the electromagnetic spectrum, as these parts will typically be absorbed by a turbid fluid. In particular, UV is strongly absorbed in fluids such as water. Therefore, inefficient energy transfer is avoided.
  • the field generator generates an electric field, a magnetic field or a radiofrequency field.
  • a further advantage is that a plurality of light sources can be arranged in the container as a fluidized bed.
  • the distance between the at least one light source and a volume element of the fluid to be treated is hereby as small as possible. This is particularly advantageous when the photocatalyst is embodied as fine particles, since these absorb light.
  • the device according to the invention provides a solution even when other absorbent particles are present .
  • the provision of a plurality of light sources in the fluid achieves that light penetrates the whole volume of the fluid. This is particularly advantageous when light with a low penetration depth, such as UV light, is applied.
  • the light sources are distributed during use in the device according to the invention over the volume of the fluid, a substantially uniform photon flux distribution is obtained inside the container. It is hereby possible to suffice with a lower light intensity when compared to light sources arranged in a fixed position in the container .
  • a further advantage is that the device according to the invention can be easily scaled up. More light sources are simply added in a larger device. These do not have to be separately installed or attached to cables, since they use the already applied field for their energy supply.
  • the light source is preferably situated in a
  • the light source is hereby wholly or partially protected from the fluid and possible damage, for instance through short-circuiting, is prevented or countered.
  • a further advantage of the device is that it is possible to dispense with complex installations, such as parabolic light reflectors, which guide photons to the photocatalyst.
  • the container can for instance also be a pipe system, such as a drainage system.
  • the photocatalyst can be embodied in a number of ways .
  • the photocatalyst particles are for instance immobilized by fixation on activated carbon, mesoporous materials, fibres or membranes .
  • the photocatalyst is situated freely in the container such that during use the photocatalyst is displaceable through a fluid present in the container.
  • the photocatalyst consists for instance of fine
  • nanoparticles such as Degusta P-25 T1O 2 particles in the form of a suspension.
  • Embodying the photocatalyst as particles displaceable through a fluid achieves that the photocatalyst can move through the volume of the fluid, whereby an effective treatment thereof is obtained.
  • An additional advantage is that a relatively large reaction surface is in this way obtained .
  • Means are optionally provided for setting fluid into motion in the container, whereby the photocatalyst particles can be moved through the fluid during use .
  • the photocatalyst is for instance embodied as particles of a size such that separation of the particles from the fluid is simple.
  • Providing a heterogeneous photocatalyst means that the catalyst preferably does not dissolve in the fluid to be treated. This has the advantage that the catalyst is easy to separate from the fluid.
  • heterogeneous photocatalyst preferably does not dissolve in the fluid to be treated.
  • photocatalysis can be applied at room temperature and normal pressure. There is moreover no or little secondary
  • Heterogeneous photocatalysis can further be applied at low operating cost.
  • the photocatalyst is preferably a semiconductor
  • photocatalyst such as Ti0 2 , ZnO, Fe 2 0 3 , CDS, GaP, ZnS .
  • the photocatalyst is most preferably TiC>2.
  • T1O 2 is a thermally and chemically stable catalyst which can moreover withstand chemical degradation. Furthermore, T1O 2 has strong mechanical properties. Semiconductor photocatalysts are particularly applied in advanced oxidation processes (AOPs) .
  • AOPs advanced oxidation processes
  • Advanced oxidation processes are based on the principle of in situ creation of free radicals such as H 2 O 2 , OH., O 2 .-, O3 for oxidizing organic and inorganic substances, for instance hormones, medicines and disinfection byproducts, such as byproducts of chlorination .
  • Aromatic compounds are for instance hydroxylated by a reactive OH. radical, this resulting in successive oxidation/addition reactions and eventually in opening of the aromatic ring. This results in intermediate substances, mainly aldehydes and carboxylic acids, which are further carboxylated, wherein carbon dioxide and water are formed.
  • the free radicals can also kill micro-organisms such as pathogens, or in any case prevent multiplication thereof .
  • an electron-hole pair (eh pair) is formed when photons with an energy greater than or equal to the bandgap of the catalyst are absorbed by the catalyst .
  • a series of redox reactions then occurs, whereby free radicals are created.
  • the invention is particularly advantageous when it is applied in an advanced oxidation process.
  • the light source is for instance integrated with the photocatalyst .
  • a powdery or otherwise finely distributed photocatalyst is for instance arranged on a transparent casing enveloping the light source. This achieves that the light source is situated sufficiently close to the
  • the photocatalyst is moreover easy to separate from the fluid by means of removing the light source from the fluid.
  • a pump element In a currently preferred embodiment of a light source integrated with the photocatalyst, the integration is embodied with a type of pump element.
  • a pump comprises a housing provided with a reactor chamber, an inlet for admitting and discharging fluid into and out of the reactor chamber, and a piezo-element provided drivably on at least one side of the reactor chamber.
  • a pump element can also find application as hydrophone pump.
  • the pump element provided with light source and photocatalyst can for instance be provided with energy from an applied electromagnetic field for the purpose of realizing the inflow and outflow into and out of the reactor chamber.
  • a light source and/or a catalyst can be provided here in the inlet and/or reactor chamber .
  • a compact embodiment can in this way be realized which can be active even in a stagnant fluid .
  • the converter comprises an electrical conductor for generating an induction voltage in a magnetic field.
  • the conductor generates an induction voltage when a magnetic field is applied with the field generator.
  • the induction voltage is applied for the purpose of turning on the light source.
  • a wireless energy transfer is in this way realized .
  • the device comprises a capacitor operatively connected to the conductor and light source so that a tuned circuit is formed.
  • the conductor for generating induction voltage is operatively connected to a capacitor and optionally to a resistor.
  • the resonance frequency of the circuit can be chosen by selecting a correct value of the capacitor and optionally the resistor.
  • a resonant inductive coupling of the light source to the generated magnetic field is hereby possible. This has the advantage that optimum energy transfer takes place.
  • An induction voltage is for instance generated in the above described embodiments by moving the electrical conductor in a magnetic field.
  • the electrical conductor is preferably a coil.
  • An induction voltage can hereby be generated in a time-varying magnetic field.
  • the field generator preferably generates a time-varying magnetic field during use.
  • the generated induction voltage does not hereby depend on movement of the electrical conductor.
  • the time-varying magnetic field is preferably a magnetic field which oscillates at a fixed frequency.
  • the electrical conductor is manufactured by means of micro-machining.
  • the light source can hereby be given a compact form.
  • the conductor is for instance etched.
  • the electrical conductor as well as electrical components connected thereto, such as capacitors and/or resistors and the light source itself, are preferably manufactured by means of micro-machining, such as etching, for instance on a printed circuit board.
  • An integrated circuit is hereby obtained which can serve as light source in the device according to the invention. This can be given a relatively small form as a result.
  • the invention is preferably an ultraviolet (UV) light source.
  • the light source is for instance an UV LED.
  • An UV light source is particularly provided in combination with a T1O 2 photocatalyst .
  • T1O 2 has a bandgap corresponding to
  • wavelengths of the light in the ultraviolet range of the spectrum typically wavelengths of 300-390 nanometres .
  • a problem which occurs when applying ultraviolet light in the known devices is that UV has a very low penetration depth in water. This problem is obviated by applying an UV light source in the device according to the invention.
  • the light sources have a mass/volume displacement of 0.1-1.2 g/cm 3 , preferably 0.4-1.2 or 0.5-1.1 or 0.6-1.0 or 0.8-1.0 or 0.9-1.0 g/cm 3 .
  • mass/volume displacement make the at least one light source suitable for packing as fluidized bed in the volume of the container when a fluid is used which is gaseous or an aqueous liquid at room temperature .
  • the field generator is located in the container.
  • the field generated during use by the field generator is not
  • the container In the case of for instance a magnetic field generator located inside the container, the magnetic field is hardly affected by the dielectric properties or the magnetic susceptibility of the container. Furthermore, the field generator is in this way situated as close as possible to the fluid for treatment, this being energy-efficient. There is a better interaction when the field generator is located inside the container.
  • the invention further relates to a method for
  • photocatalytic treatment of a fluid comprising of:
  • At least one light source which comprises a converter which during use converts the applied field to light
  • This method has the same advantages and effects as described above for the device according to the invention.
  • the method is preferably applied in combination with the device as described above.
  • the method is combined with the use of ozone, H 2 0 2 and/or ultrasonic sound.
  • the invention further relates to a light source for use in the device as described above, comprising a converter which during use converts the field generated by the field generator to light, and a photocatalyst .
  • the photocatalyst is integrated with the wireless light source.
  • a powdery photocatalyst is for instance arranged on a transparent casing enveloping a light source such as an LED. This achieves that the light source is located sufficiently close to the photocatalyst.
  • the photocatalyst is moreover easy to separate from the fluid by means of removing the light source from the fluid.
  • the light source can also be integrated with the photocatalyst in a type of pump element as described above .
  • Figure 1 shows a schematic view of a device according to the invention
  • Figure 2 shows the device of figure 1 during use
  • Figure 3 shows a light source for use in the device according to the invention
  • Figure 4 shows an alternative embodiment of a light source for use in the device according to the invention
  • Figure 5 shows the circuit diagram of the light source of figure 4.
  • Figures 6-8 show some experimental results .
  • Device 2 (figure 1) has an outlet 4 and an inlet 6 for admitting water to be treated through inlet 6 and for discharging treated water via outlet 4.
  • Device 2 comprises a container 8 in which light sources 10 are located. Further present in container 8 is a photocatalyst 12 in the form of fine particles, in this case nanoparticles .
  • Photocatalyst 12 is alternatively embodied as larger particles, for instance of a size of several millimetres or centimetres, or
  • UV light sources 10 and photocatalyst 12 are held inside container 8 by filters 14.
  • Device 2 is equipped with an additional housing 16 inside which a magnetic field is generated by means of coils (not shown) . Housing 40 is embodied in metal, so creating a Faraday cage.
  • Light source 10 comprises an LED 22 (figure 3) which is connected electrically to coil 24 with ferrite core 26. The whole is enveloped by transparent casing 28.
  • light source 10 is embodied with two LEDs 30, 32 (figure 4, 5) .
  • the casing 28 of figure 3 is covered with a photocatalyst in powder form.
  • this water is guided via inlet 6 into container 8 of device 2.
  • the water flows via outlet 4 out of the container.
  • This can be a continuous or batch-wise process. In the case it is batch-wise, means are optionally provided for setting the liquid in container 8 into motion or keeping it in motion.
  • the field generator (not shown) is activated, whereby a magnetic field is applied over container 8.
  • a voltage is created by induction in coil 24, whereby LED 22 begins to emit light.
  • Light sources 10 with LEDs 22 emit UV light.
  • the emitted photons have an energy greater than or equal to the bandgap of the photocatalyst material 12, in this case T1O 2 , titanium dioxide.
  • An electron-hole pair is hereby formed which makes a series of redox reactions possible whereby free radicals are created.
  • the free radicals decompose inorganic and organic compounds to CO 2 and water.
  • Micro-organisms such as pathogens, algae and bacteria are moreover killed.
  • UV-LEDs with wavelength between 400 and 315 nm are used as a light source in photocatalytic oxidation.
  • the UV-LEDs are powered with resonant inductive coupling (RIC) and the LEDs fluidize in the reactor .
  • RIC resonant inductive coupling
  • a relatively large number of UV-LEDs is powered by one power source with RIC that is easy to connect the UV-LEDs without using wires connected to LEDs such that no physical connection is needed.
  • the UV-LEDs can be pumped in and out of the reactor for easy maintenance, cleaning, replacing of UV-LEDs, checking for malfunction of UV-LEDs etc.
  • the UV-LEDs used are easy to manufacture with receiving coil. It is not necessary to fix the UV-LEDs in a structure inside the reactor, eliminating the opportunity for fouling of the structure .
  • the experiment showed the possibility to use resonant inductive coupling in water technology and compares the optimal condition to the fluidized bed condition .
  • the UV-LEDs were fixed inside the reactor in one plane, evenly distributed over the reactor giving a uniform radiation, and optimally coupled to the transmitting coil giving the highest power to the UV-LEDs.
  • the UV-LEDs in the fluidized bed conditions were fluidized in a three-phase fluidized bed reactor.
  • the UV- LEDs were fluidized with aeration randomly inside the reactor .
  • the transmitting coil is a solenoid coil wound from 4 mm copper wire around an 80 mm PVC tube.
  • the transmitting coil has capacitors connected in series to make it a resonating circuit .
  • a three loops copper wire is wound on the transmitting coil to drive the transmitting coil.
  • the three loops copper wire is connected to an
  • the amplifier receives a signal from a signal generator which it amplifies and the power is transmitted to the resonating transmitting coil. Power applied to the transmitting coil is measured with the voltage over the three loops copper wire and current through a 0.1 ⁇
  • the receiving coils are ferrite cored coils 7 mm in diameter and 12 mm in height .
  • a capacitor and UV-LED are connected to it making the package 20 mm in height ( Figure 3) .
  • UV-LEDs or UVA-LEDs currently available are quite efficient at around 14 to 21 % efficiency and emit
  • NSPU510CS were used. LEDs are packaged in a 5 mm epoxy resin cylinder and emit UV light at 375 nm with an efficiency of 14% .
  • the reactor is an 80 mm in diameter PVC tube where the transmitting coil is wound around. At the bottom of the reactor an air stone is placed where air is being aerated into the reactor.
  • the aeration serves 3 goals: 1) to mix the fluid, 2) to have a high amount of oxygen in the fluid, as oxygen acts as an electron acceptor for T1O 2 and 3) to fluidize the receiving coils with their UV-LEDs (only in the case of the fluidized bed conditions) .
  • the UV-LEDs were distributed evenly inside the reactor and fixed to the reactor resulting in an evenly distributed UV light inside the reactor.
  • the receiving coils were always coupled optimally to the transmitting coil resulting in theoretically the best situation for photocatalytic oxidation.
  • EPS Expanded Polystyrene
  • UV-LED Expanded Polystyrene
  • the receiving coil and UV-LED were then fluidized freely inside the reactor by the aeration as can be seen in Figure 2.
  • One liter of a solution of 8 mg/1 MB and 1 g/1 Ti0 2 in milliQ water is added in the reactor with 16 receiving coils with UV LEDs .
  • a sample is taken each 15 minutes and the concentration of MB is measured.
  • photocatalytic reaction rate with fluidized UV-LEDs is faster than when the UV-LEDs were fixed inside the reactor .
  • photocatalytic oxidation with fluidized UV-LEDs increases the oxidation rate by more than 200% compared to fixing the UV-LEDs inside the reactor.
  • the fluidized UV-LEDs also show a higher oxidation rate at low methylene blue concentrations. This is very important for water treatment and related technologies where compounds have to be removed to an increasingly stricter, lower level.
  • the increase of oxidation rate is most likely caused by that fluidizing the UV-LEDs the distribution of UV irradiation inside the reactor is better distributed and the mixing inside the reactor is increased.

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  • Chemical & Material Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Water Treatments (AREA)
  • Catalysts (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

L'invention porte sur un dispositif de traitement photocatalytique d'un fluide, ledit dispositif comportant : - un contenant pour retenir un fluide, ayant au moins une entrée et au moins une sortie ; - au moins un générateur de champ qui, pendant l'utilisation, crée un champ électrique, magnétique ou électromagnétique ; - au moins une source de lumière disposée dans le récipient et comportant un convertisseur, ledit convertisseur, pendant l'utilisation, convertissant le champ généré par le générateur de champ en lumière ;- un photocatalyseur disposé dans le contenant.
PCT/NL2012/050095 2011-02-21 2012-02-20 Dispositif et procédé de traitement photocatalytique d'un fluide Ceased WO2012115509A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2006265A NL2006265C2 (nl) 2011-02-21 2011-02-21 Inrichting en werkwijze voor het fotokatalytisch behandelen van een fluã¯dum.
NL2006265 2011-02-21

Publications (1)

Publication Number Publication Date
WO2012115509A1 true WO2012115509A1 (fr) 2012-08-30

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NL (1) NL2006265C2 (fr)
WO (1) WO2012115509A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017109687A1 (de) * 2017-05-05 2018-11-08 Dechema-Forschungsinstitut Drahtlos betreibbare Leuchte zur Anregung lichtgetriebener chemischer Reaktionen in einem Reaktionsgefäß, Verfahren zu deren Herstellung und Vorrichtung mit einer solchen Leuchte

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112158995B (zh) * 2020-09-29 2022-10-25 上海京明环境科技有限公司 一种磁悬浮有机废水处理设备及方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09290165A (ja) * 1996-04-30 1997-11-11 Fuji Electric Co Ltd 光触媒体及びこれを用いた水処理方法
JP2004159723A (ja) * 2002-11-11 2004-06-10 Seizo Hataya 靴殺菌脱臭具
US20070119762A1 (en) * 2005-11-30 2007-05-31 Industrial Technology Research Institute Filtration device
WO2009108045A1 (fr) * 2008-02-27 2009-09-03 Stichting Wetsus Centre Of Excellence For Sustainable Water Technology Dispositif et procédé pour désinfecter un fluide
WO2010058607A1 (fr) * 2008-11-21 2010-05-27 国立大学法人徳島大学 Dispositif de stérilisation aux ultraviolets pour eau extérieure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09290165A (ja) * 1996-04-30 1997-11-11 Fuji Electric Co Ltd 光触媒体及びこれを用いた水処理方法
JP2004159723A (ja) * 2002-11-11 2004-06-10 Seizo Hataya 靴殺菌脱臭具
US20070119762A1 (en) * 2005-11-30 2007-05-31 Industrial Technology Research Institute Filtration device
WO2009108045A1 (fr) * 2008-02-27 2009-09-03 Stichting Wetsus Centre Of Excellence For Sustainable Water Technology Dispositif et procédé pour désinfecter un fluide
WO2010058607A1 (fr) * 2008-11-21 2010-05-27 国立大学法人徳島大学 Dispositif de stérilisation aux ultraviolets pour eau extérieure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017109687A1 (de) * 2017-05-05 2018-11-08 Dechema-Forschungsinstitut Drahtlos betreibbare Leuchte zur Anregung lichtgetriebener chemischer Reaktionen in einem Reaktionsgefäß, Verfahren zu deren Herstellung und Vorrichtung mit einer solchen Leuchte

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