CN114180748A - Reduction of CO by using heavy metal ions in wastewater2Apparatus and method of - Google Patents

Reduction of CO by using heavy metal ions in wastewater2Apparatus and method of Download PDF

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Publication number
CN114180748A
CN114180748A CN202111236401.3A CN202111236401A CN114180748A CN 114180748 A CN114180748 A CN 114180748A CN 202111236401 A CN202111236401 A CN 202111236401A CN 114180748 A CN114180748 A CN 114180748A
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heavy metal
metal ions
wastewater
reaction tube
inlet
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张衡
邓茜
陈航榕
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Shanghai Institute of Ceramics of CAS
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Shanghai Institute of Ceramics of CAS
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    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8671—Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
    • 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
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62—Heavy metal compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/80—Type of catalytic reaction
    • B01D2255/802—Photocatalytic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Catalysts (AREA)

Abstract

The invention provides a method for reducing CO by using heavy metal ions in wastewater2The device and the method comprise a reactor, wherein the reactor comprises a plurality of reaction tubes, the reaction tubes are mutually connected in series and communicated, the reactor is provided with an inlet and an outlet, the inlet and the outlet are respectively connected and communicated with the reaction tubes, the reaction tubes are provided with adsorbing materials loaded with photocatalyst, when heavy metal ions in the wastewater need to be removed, the wastewater enters the reaction tubes through the inlet, and the heavy metal ions are adsorbed and then discharged; when catalytic reduction of CO is required2When first containing S2‑Introducing the solution into a reaction tube to generate a metal sulfide semiconductor nano material in situ with heavy metal ions; then CO is discharged2Introducing gas into the reaction tube, and catalytically reducing CO by the synergistic effect of light irradiation, photocatalyst and metal sulfide semiconductor nano material2. The invention utilizes the sensitization of metal sulfide to photocatalyst to catalytically reduce CO when removing heavy metal ions in wastewater2。

Description

Reduction of CO by using heavy metal ions in wastewater2Apparatus and method of
Technical Field
The invention relates to the field of chemical equipment, in particular to a method for reducing CO by using heavy metal ions in wastewater2The apparatus and method of (1).
Background
With the continuous acceleration of industrialization and urbanization, water bodies are seriously polluted by various substances, particularly water body heavy metal pollution, such as Pb, Cu, Cr, Cd and other heavy metals polluted water bodies, has the problems of high toxicity and cumulative harm, and becomes a global environmental problem. For a long time, the industry is continuously searching for a simple, efficient, economical and feasible technology for treating heavy metal wastewater. Meanwhile, the recycling of heavy metals and water is also widely concerned worldwide, especially in countries and regions where water resources are in short supply. China is a country with serious shortage of fresh water resources, and according to statistics, 60% of industrial wastewater in China contains heavy metal pollutants. Therefore, the research on economic and effective heavy metal industrial wastewater treatment technology is urgently needed to meet the increasingly strict environmental protection requirement and human health.
Meanwhile, the ecological environment of the earth is seriously damaged by the increasingly accelerated industrialization and urbanization processes, wherein the largest influence range is the greenhouse effect. The increasing carbon dioxide content in the atmosphere is one of the main causes of the greenhouse effect. The temperature rise can dry the subtropical regions, the rainfall in high latitude regions is increased, the ice accumulation region in the ocean is reduced, and the ice and snow melt in advance. In order to protect the global environment on which human beings depend for survival, it is urgent to adopt effective measures to reduce the emission of carbon dioxide or utilize the carbon dioxide as resources.
To this end, those skilled in the art have endeavored to develop an effective method for removing heavy metals and CO from wastewater2And (4) a reduction device.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a method for reducing CO by using heavy metal ions in wastewater2The device and the method can remove heavy metal ions in the wastewater and reduce CO2。
According to one aspect of the invention, the invention provides a method for reducing CO by using heavy metal ions in wastewater2The device comprises a reactor, wherein the reactor comprises a plurality of reaction tubes, the reaction tubes are mutually connected in series and communicated, the reactor is provided with an inlet and an outlet, the inlet and the outlet are respectively connected with the reaction tubes and mutually communicated through the reaction tubes, the reaction tubes are provided with adsorbing materials loaded with photocatalysts, when heavy metal ions in wastewater need to be removed, the wastewater enters the reaction tubes through the inlet, and the heavy metal ions in the wastewater are adsorbed by the adsorbing materials; when catalytic reduction of CO is required2When first containing S2-Introducing the solution into a reaction tube to generate a metal sulfide semiconductor nano material in situ with the adsorbed heavy metal ions; then CO is discharged2Introducing gas into the reaction tube, and catalytically reducing CO by the synergistic effect of light irradiation, photocatalyst and metal sulfide semiconductor nano material2。
Preferably: the reaction tubes are vertically arranged.
Preferably: the adsorbent material is made of a porous adsorbent material.
Preferably: the surface of the porous adsorption material contains hydrophilic functional groups.
Preferably: the reactor is characterized by further comprising an outer shell, a constant temperature cavity is arranged in the outer shell, a constant temperature liquid inlet and a constant temperature liquid outlet are arranged on the outer shell, the constant temperature liquid inlet and the constant temperature liquid outlet are respectively communicated with the constant temperature cavity, the constant temperature liquid inlet and the constant temperature liquid outlet are mutually communicated with the constant temperature cavity, and the reactor is arranged in the constant temperature cavity.
Preferably: the reactor also comprises an inner shell, and the reaction tubes are arranged in the inner shell.
Preferably: the inner surface of the inner shell is also provided with a reflecting layer.
Preferably: the device also comprises a light source which is positioned above the reaction tube.
According to another aspect of the invention, the invention provides a method for reducing CO by using heavy metal ions in wastewater2Method (2)The method comprises the following steps:
step 1, wastewater containing heavy metal ions enters the reaction tube through an inlet of the reaction tube, and the heavy metal ions are adsorbed by an adsorbing material and then discharged through an outlet;
step 2, adding S2-The solution enters the reaction tube through the inlet to make the heavy metal ions and S adsorbed on the adsorption material2-Fully reacting to generate corresponding metal sulfide semiconductor nano material in situ, wherein the reacted nano material contains a small amount of S2-Discharging the solution from the outlet;
step 3, adding CO2Gas enters the reaction tube through the inlet, the reaction tube is irradiated by the light source, and CO is catalytically reduced by the combined action of the photocatalyst loaded on the adsorbing material and the generated metal sulfide semiconductor nano material2。
Preferably: said containing S2-The solution is Na2And (5) preparing an S solution.
The invention relates to a method for reducing CO by using heavy metal ions in wastewater2The device and the method not only can remove heavy metal ions in the wastewater, but also can reduce CO by using the heavy metal ions2。
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.
FIG. 1 shows the reduction of CO by heavy metal ions in wastewater according to an embodiment of the present invention2The structural schematic diagram of the device of (1);
FIG. 2 shows the reduction of CO by heavy metal ions in wastewater according to an embodiment of the present invention2The top view structure of the device is schematic;
FIG. 3 shows the reduction of CO by heavy metal ions in wastewater according to an embodiment of the present invention2The process flow diagram of the system of (1).
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
As shown in fig. 1, in an embodiment of the present invention, there is provided an apparatus for reducing CO2 using heavy metal ions in wastewater.
The device comprises a reactor, and the reactor comprises a plurality of reaction tubes 1. The tubular reaction tube 1 is a place where reaction occurs, and is beneficial to improving the reaction efficiency.
A plurality of reaction tubes 1 are connected in series and communicated with each other, thereby increasing the reaction contact area of the reaction tubes 1.
And in combination with that shown in figure 2, the reactor is provided with an inlet 2 and an outlet 3. The inlet 2 and the outlet 3 are respectively connected with a plurality of reaction tubes 1 and are mutually communicated through a plurality of reaction tubes 1. Preferably, the inlet 2 and the outlet 3 are openings at both ends of a plurality of reaction tubes 1 connected in series.
The reaction tube 1 is preferably made of a light-transmitting porous material to facilitate light injection and heavy metal ion adsorption.
The reaction tube 1 supports a photocatalyst. When heavy metal ions in the wastewater need to be removed, the wastewater enters the reaction tube 1 through the inlet 2, and the heavy metal ions in the wastewater are adsorbed and then discharged through the outlet 3. When catalytic reduction of CO is required2When first containing S2-Introducing the solution into the reaction tube 1 to generate a metal sulfide semiconductor nano material in situ with the adsorbed heavy metal ions; then CO is discharged2Gas is introduced into the reaction tube 1, and CO is catalytically reduced under the combined action of illumination, photocatalyst and metal sulfide semiconductor nano material2。
The metal sulfide semiconductor (ZnS, CdS and the like) nano material is used as a semiconductor with narrow forbidden band gap and is widely applied to the fields of photoelectrochemistry, solar cells, photocatalysis, sensing devices and the like. Photocatalyst (TiO)2，BiVO4Etc.) can improve the spectral absorption and light energy utilization of the material in the visible light region,meanwhile, a heterojunction formed by the two is beneficial to separation of photogenerated electrons and holes, and shows high photocatalytic property compared with a single semiconductor.
Therefore, in the embodiment of the invention, the heavy metal ions are converted into corresponding metal sulfides by utilizing the sensitization of the metal sulfides on the photocatalyst, and a heterojunction is formed between the metal sulfides and the photocatalyst, so that the toxic action of the original heavy metal ions on the photocatalyst can be shielded, and even the efficiency of photocatalytic reduction of CO2 can be promoted. In the embodiment of the invention, the photocatalyst is loaded on the reaction tube 1, and the heavy metal ions in the wastewater are adsorbed through the porous adsorption of the reaction tube 1, so that the purification of the heavy metal ion wastewater is realized. And then leading the solution containing S2-to react the S2-with heavy metal ions in situ to generate the metal sulfide semiconductor nano material. And finally, CO2 is catalytically reduced under the combined action of the photocatalyst and the metal sulfide semiconductor nano material under the illumination, and the whole device removes heavy metal ions in the wastewater and simultaneously reduces CO2 by using the heavy metal ions.
As shown in fig. 1, in the embodiment of the present invention, it is preferable that several reaction tubes 1 are vertically arranged.
The preferred adsorbent material is a porous material having a large number of hydrophilic functional groups on the surface.
Further, as shown in fig. 1, in the embodiment of the present invention, it is preferable to further include a housing 4. Be equipped with the thermostatic chamber in the shell 4, be equipped with thermostatic liquid import and thermostatic liquid export on the shell 4, thermostatic liquid import and thermostatic liquid export communicate with each other and thermostatic liquid import and thermostatic liquid export communicate with each other through the thermostatic chamber with the thermostatic chamber respectively, and the reactor is located in the thermostatic chamber. The temperature of the reaction tube 1 in the reactor is ensured by a thermostatic chamber.
And preferably the reactor further comprises an inner shell 5. A plurality of reaction tubes 1 are provided in the inner shell 5. The inner shell 5 facilitates the mass placement of the reaction tubes 1 and the concentrated irradiation of light onto the reaction tubes 1.
And preferably, the inner surface of the inner shell 5 is also provided with a light reflecting layer, so that the light utilization rate is improved.
As shown in fig. 1, in an embodiment of the invention, a light source 6 is also included. And preferably a reaction in which the light source 6 is placed in the reactorThe light utilization rate is improved by irradiating the upper part of the tube 1, namely, the light from one end of the reaction tubes 1. When catalytic reduction of CO is required2While light emitted from the light source 6 passes through the reaction tube 1 and catalytically reduces CO in the reaction tube 12。
As shown in FIGS. 1 and 2, in the embodiment of the present invention, a method for reducing CO by using heavy metal ions in wastewater2The method comprises the following steps:
step 1, wastewater containing heavy metal ions enters a reaction tube 1 through an inlet 2 of the reaction tube 1, and the heavy metal ions in the wastewater are fully adsorbed and then discharged through an outlet 3;
step 2, adding S2-Solution, preferably Na2The S solution enters the reaction tube 1 through the inlet 2, so that the heavy metal ions and S adsorbed on the reaction tube 12-Fully reacting in situ, and converting into corresponding metal sulfide semiconductor nano material containing a small amount of S2-The solution is discharged from the outlet 3;
step 3, adding CO2Gas enters the reaction tube 1 through the inlet 2, irradiates the reaction tube 1 through the light source, and catalytically reduces CO through the combined action of the metal sulfide semiconductor nano material originally generated on the reaction tube 1 and the photocatalyst loaded on the reaction tube 12。
The method of the embodiment of the invention utilizes the heavy metal ions to reduce CO when removing the heavy metal ions in the wastewater2。
In addition, as shown in FIG. 3, in an embodiment of the present invention, a method for reducing CO using heavy metal ions in wastewater2The system formed by the device comprises a plurality of reactors, the number of the reactors can be selected according to the actual wastewater treatment capacity, and the reactors are connected in parallel. Preferably, the reactor includes reactor No. 1, reactor No. 2 and reactor No. 3. The inlet of the reactor is respectively connected with the heavy metal ion wastewater and Na2S solution, CO2The gas is communicated with the outlet which is respectively communicated with the wastewater collecting tank and the Na2The S solution and the gas post-treatment device are communicated.
The inlet and outlet of each reactor in the whole system are provided with valves.
All valves are closed before the system begins to operate.
When the system is started, the valve of the No. 1 reactor is opened, the wastewater containing heavy metal ions flows in from the inlet of the No. 1 reactor through the pipeline, and the reaction tube of the reactor is made of a porous material of which the surface contains a large number of hydrophilic functional groups and can adsorb the heavy metal ions in the wastewater. And a plurality of reaction tubes are connected in series, so that heavy metal ions in the wastewater can be fully absorbed. The wastewater adsorbed by the reaction tube flows out of the outlet to a wastewater collection pool.
According to the actual operation condition of the equipment, after a certain amount of wastewater is introduced, the valve of the No. 1 reactor is closed, the valve of the No. 2 reactor is opened, and the wastewater containing heavy metal ions flows into the No. 2 reactor.
At the moment, the inlet and outlet valves of the reaction tube of the No. 1 reactor are switched to Na2In the S solution pool, adding Na2The S solution is introduced from the inlet of the reaction tube to lead the heavy metal ions and the S adsorbed on the reaction tube to be2-Fully reacting in situ, and converting into corresponding metal sulfide semiconductor nano material, reacted Na2Discharging the S solution from the outlet of the reaction tube to Na2In the S solution pool, Na is detected2S in S solution pool2-The concentration of (3) is adjusted to the original concentration again.
Na2After the S solution is completely introduced, the valve can be switched to CO2A gas channel, a light source is opened at the moment, the metal sulfide semiconductor nano material in the reaction tube sensitizes the photocatalyst, and CO is introduced under the illumination effect2The gas will be reduced.
The invention is described below in specific examples:
example 1
As shown in fig. 1 and 2, an apparatus and method for reducing CO2 using heavy metal ions in wastewater includes a reactor. The reactor comprises an outer shell 4 and an inner shell 5.
A constant temperature cavity is arranged in the shell 4, a constant temperature liquid inlet and a constant temperature liquid outlet are arranged on the shell 4, and the constant temperature liquid inlet and the constant temperature liquid outlet are respectively communicated with the constant temperature cavity. The inner shell 5 is disposed in the thermostatic chamber. The outer shell 4 and the inner shell 5 are hollow for constant temperature liquid flow.
A plurality of reaction tubes 1 are arranged in the inner shell 5, and a reflecting layer is also arranged on the inner surface of the inner shell 5. The reaction tubes 1 are vertically arranged and are connected in series and communicated with each other. The reaction tube 1 is made of a porous material supporting a photocatalyst, the surface of which contains a large number of hydrophilic functional groups.
The reactor is provided with an inlet 2 and an outlet 3. The inlet 2 and the outlet 3 are respectively connected and communicated with a plurality of reaction tubes 1.
When heavy metal ions in the wastewater are utilized to reduce CO2The method comprises the following steps:
step 1, wastewater containing heavy metal ions enters a reaction tube 1 through an inlet 2 of the reaction tube 1, and the heavy metal ions in the wastewater are fully adsorbed and then discharged through an outlet 3;
step 2, adding Na2The S solution enters the reaction tube 1 through the inlet 2, so that the heavy metal ions and S adsorbed on the reaction tube 12-Fully reacting in situ, and converting into corresponding metal sulfide semiconductor nano material containing a small amount of S2-The solution is discharged from the outlet 3;
step 3, adding CO2Gas enters the reaction tube 1 through the inlet 2, irradiates the reaction tube 1 through the light source, and catalytically reduces CO through the metal sulfide semiconductor nano material sensitized photocatalyst generated in situ in the reaction tube 1 under the combined action2。
In summary, the embodiment of the invention reduces CO by using heavy metal ions in wastewater2The method and the device can reduce CO by using the heavy metal ions when removing the heavy metal ions in the wastewater2。
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (10)

1. Reduction of CO by using heavy metal ions in wastewater2The device is characterized by comprising a reactor, wherein the reactor comprises a plurality of reaction tubes, the reaction tubes are mutually connected in series and communicated, the reactor is provided with an inlet and an outlet, the inlet and the outlet are respectively connected with the reaction tubes and are mutually communicated through the reaction tubes, the reaction tubes are provided with adsorbing materials loaded with photocatalysts, when heavy metal ions in wastewater need to be removed, the wastewater enters the reaction tubes through the inlet, and the heavy metal ions in the wastewater are adsorbed by the adsorbing materials; when catalytic reduction of CO is required2When first containing S2-Introducing the solution into a reaction tube to generate a metal sulfide semiconductor nano material in situ with the adsorbed heavy metal ions; then CO is discharged2Introducing gas into the reaction tube, and catalytically reducing CO by the synergistic effect of light irradiation, photocatalyst and metal sulfide semiconductor nano material2。
2. The method for reducing CO by using heavy metal ions in wastewater according to claim 12The device of (2), characterized in that: the reaction tubes are vertically arranged.
3. The method for reducing CO by using heavy metal ions in wastewater according to claim 12The device of (2), characterized in that: the adsorbent material is made of a porous adsorbent material.
4. The method for reducing CO by using heavy metal ions in wastewater as claimed in claim 32The device of (2), characterized in that: the surface of the porous material contains hydrophilic functional groups.
5. The method for reducing CO by using heavy metal ions in wastewater according to claim 12The device of (2), characterized in that: still include the shell, be equipped with the thermostatic chamber in the shell, be equipped with thermostatic liquid import and thermostatic liquid export on the shell, thermostatic liquid import and thermostatic liquid export respectively with the thermostatic chamber communicates with each other just thermostatic liquid import and thermostatic liquid export pass through each other the thermostatic chamber communicates with each other, the reactor is located the thermostatic chamberIn (1).
6. The method for reducing CO by using heavy metal ions in wastewater according to claim 52The device of (2), characterized in that: the reactor also comprises an inner shell, and the reaction tubes are arranged in the inner shell.
7. The method for reducing CO by using heavy metal ions in wastewater as claimed in claim 62The device of (2), characterized in that: the inner surface of the inner shell is also provided with a reflecting layer.
8. The method for reducing CO by using heavy metal ions in wastewater according to claim 12The device of (2), characterized in that: the device also comprises a light source which is arranged above the reaction tube.
9. Reduction of CO by using heavy metal ions in wastewater2The method of (2), characterized by: use of the method according to any one of claims 1 to 8 for reducing CO by using heavy metal ions in wastewater2The method comprises the following steps:
step 1, wastewater containing heavy metal ions enters the reaction tube through an inlet of the reaction tube, and the heavy metal ions are adsorbed by an adsorbing material and then discharged through an outlet;
step 2, adding S2-The solution enters the reaction tube through the inlet to make the heavy metal ions and S adsorbed on the adsorption material2-Fully reacting to generate corresponding metal sulfide semiconductor nano material in situ, wherein the reacted nano material contains a small amount of S2-Discharging the solution from the outlet;
step 3, adding CO2Gas enters the reaction tube through the inlet, the reaction tube is irradiated by the light source, and CO is catalytically reduced by the combined action of the photocatalyst loaded on the adsorbing material and the generated metal sulfide semiconductor nano material2。
10. The method of claim 9, wherein: said containing S2-The solution is Na2S solutionAnd (4) liquid.
CN202111236401.3A 2021-10-22 2021-10-22 Reduction of CO by using heavy metal ions in wastewater2Apparatus and method of Pending CN114180748A (en)

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Publication number Priority date Publication date Assignee Title
JP2013017929A (en) * 2011-07-08 2013-01-31 Ihi Corp Carbon dioxide reduction method and reduction device
US20210106977A1 (en) * 2017-04-28 2021-04-15 IFP Energies Nouvelles Photocatalytic carbon dioxide reduction method using a photocatalyst in the form of a porous monolith
CN107349965A (en) * 2017-06-16 2017-11-17 中国科学院上海硅酸盐研究所 A kind of adsorption photochemical catalysis hydrogel material and its application in the cooperative photocatalysis sewage production hydrogen of heavy metallic poison is reversed
CN111889050A (en) * 2020-08-19 2020-11-06 四川大学 Photocatalysis reaction appearance

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潘大伟: "《普通高等教育"十三五"规划教材 环境工程实验》", 31 August 2019, 冶金工业出版社 *

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Application publication date: 20220315

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