CN110255556A - The method that the porous material of pollution of chromium in water removal is removed in the modified Chinese parasol leaf production of the concentrated sulfuric acid - Google Patents
The method that the porous material of pollution of chromium in water removal is removed in the modified Chinese parasol leaf production of the concentrated sulfuric acid Download PDFInfo
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- CN110255556A CN110255556A CN201910568210.3A CN201910568210A CN110255556A CN 110255556 A CN110255556 A CN 110255556A CN 201910568210 A CN201910568210 A CN 201910568210A CN 110255556 A CN110255556 A CN 110255556A
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- China
- Prior art keywords
- chinese parasol
- sulfuric acid
- concentrated sulfuric
- parasol leaf
- porous material
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- 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
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
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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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
-
- 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
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Materials Engineering (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses the methods that the porous material of pollution of chromium in water removal is removed in a kind of modified Chinese parasol leaf production of concentrated sulfuric acid, Chinese parasol leaf is impregnated by the concentrated sulfuric acid, it realizes and the duct of Chinese parasol leaf is transformed, the type and quantity for increasing Chinese parasol leaf surface functional group while realizing low-temperature carbonization, assign the be modified more specific surface areas of Chinese parasol leaf and activated adoption site；Chinese parasol leaf not only can be improved to the adsorption capacity of Cr VI in the method for the present invention, can also be achieved the resource utilization of waste.
Description
Technical field
The invention belongs to ground water cleaning technical fields, and in particular to a kind of modified Chinese parasol leaf production of the concentrated sulfuric acid goes to remove water
The method of the porous material of middle pollution of chromium may be used as solving in the hexavalent chromium polluted recovery technique of underground water, adsorbent material price
Problem high, adsorption efficiency is low.
Background technique
Water resource is the ecological resources of mankind's preciousness, but currently, chromium unreasonable discharge and leakage caused it is serious
Water pollution problems constitutes threat to the health of the mankind.If corresponding measure is not taken to remove it from underground water, it will tight
Ghost image rings the safety of environment and ecology.
Biomass absorbent is gone based on modes such as the exchange of biological material surface ion, microdeposit, absorption, coordination and complexings
The natural process of heavy metal in water removal is a kind of method of newer removal Pollutants in Wastewater.The life that this method uses
Material or it is cheap or is highly usable.The adsorbent material extracted from inexpensive agricultural wastes can be used for
Chromium ion effectively removing and recycling in waste water.The main advantage of biomass absorbent is that this method uses cheap biological material
Material, and the concentration of the heavy metal ion in solution can be dropped to extremely low level.Compared with traditional treatment method, biology
A possibility that major advantage of matter absorption method includes: at low cost, high-efficient and metal recovery.In the lower situation of heavy metal concentration
Under, traditional chemical precipitation method, membrane filter method, electrolysis method, ion-exchange, carbon adsorption method etc. are uneconomical, are also not suitable for.It is various
Biomass adsorbent is widely used to the processing of chromate waste water, such as sheep, tire, fungi, green alga, maple sawdust, sugar residue, brewery
Sludge, active carbon, tealeaf residue, Turkey's lignite, hazelnut shell, cocoanut tree, lignocellulosic, active tamarind seeds etc..
Above studies have shown that biological material has good removal effect to the chromium in water.However, these are natural effective
Many of adsorbent has lower chromium adsorption capacity.The secondary pollution of the polymer formed after simple absorption is still main
The obstacle wanted.
Summary of the invention
Of the existing technology in order to overcome the problems, such as, the purpose of the present invention is to provide a kind of modified Chinese parasol leafs of concentrated sulfuric acid
The method that the porous material of pollution of chromium in water removal is removed in production is prepared into modified Chinese parasol leaf porous material using concentrated sulfuric acid dipping and makees
It is adsorbent to go pollution of chromium in water removal, this method is not necessarily to other high-temperature heating equipments, and the porous material of preparation is to chromium gold in water
Belonging to ion has very strong affinity, improves adsorption efficiency.
In order to achieve the above object, the present invention adopts the following technical scheme:
A kind of method that the porous material of pollution of chromium in water removal is removed in the modified Chinese parasol leaf production of the concentrated sulfuric acid, uses waste Chinese parasol tree
Tung oil tree leaf makes modified porous material, realizes low-temperature carbonization and modification to material by concentrated sulfuric acid dipping, is not necessarily to other high temperature
Heat treatment；Specifically includes the following steps:
(1) Chinese parasol leaf powder is worn into after purifying Chinese parasol leaf；
(2) Chinese parasol leaf powder and the concentrated sulfuric acid are mixed with dipping；
(3) it soaking and stirring and cleans after Chinese parasol leaf powder and the concentrated sulfuric acid sufficiently react, be dried to obtain porous material.
Chinese parasol leaf powder and concentrated sulfuric acid dosage mass ratio are (0.2-2) in the step (2): 1.
Compared to the prior art the present invention, has the advantages that
(1) it using Chinese parasol leaf as material, is easy to obtain, it is low in cost；
(2) it is realized using the concentrated sulfuric acid and the duct of Chinese parasol leaf is transformed, increase material surface while realizing low-temperature carbonization
Functional group's type and quantity assign the be modified more specific surface areas of Chinese parasol leaf and activated adoption site, further decrease into
This, improves the adsorption efficiency to Cr VI in water, can also be achieved the resource utilization of waste；
(3) material preparation process is simple and convenient to operate.
Detailed description of the invention
Fig. 1 is the SEM figure of the modified Chinese parasol leaf porous material of the concentrated sulfuric acid prepared by the embodiment of the present invention 1.
Specific embodiment
The present invention is described in further details in the following with reference to the drawings and specific embodiments.
Embodiment 1
The method that the porous material of pollution of chromium in water removal is removed in a kind of modified Chinese parasol leaf production of concentrated sulfuric acid of the present embodiment, including
Following steps:
(1) the Chinese parasol leaf repeated flushing collected removes re-dry after dust and soluble impurity, Chinese parasol leaf powder is made
End；
(2) concentrated sulfuric acid for taking Chinese parasol leaf powder to be 98% with concentration mixes, and is sealed with preservative film；Wherein Chinese parasol leaf powder
End and concentrated sulfuric acid dosage mass ratio are 0.2:1；
(3) soaking and stirring after Chinese parasol leaf powder and the concentrated sulfuric acid sufficiently react, cleaning removes excessive sulfuric acid, system repeatedly
It seals and is put into drier after standby porous material carbonizing adsorbent is dry.
Using the present embodiment method, there are a large amount of ducts in the modified Chinese parasol leaf porous material surface of the concentrated sulfuric acid of preparation, such as
Shown in Fig. 1, aperture size is in 100nm or so, at 25 DEG C, under the conditions of pH=6, for the hexavalent chromium solution of initial concentration 10mg/L
Adsorbance be 4.65mg/g；At 35 DEG C, under the conditions of pH=2, for the adsorbance of the hexavalent chromium solution of initial concentration 100mg/L
Reach 170.8mg/g.
Embodiment 2
The method that the porous material of pollution of chromium in water removal is removed in a kind of modified Chinese parasol leaf production of concentrated sulfuric acid of the present embodiment, including
Following steps:
(1) the Chinese parasol leaf repeated flushing collected removes re-dry after dust and soluble impurity, Chinese parasol leaf powder is made
End；
(2) concentrated sulfuric acid for taking Chinese parasol leaf powder to be 49% with concentration mixes, and is sealed with preservative film；Wherein Chinese parasol leaf powder
End and concentrated sulfuric acid dosage mass ratio are 2:1；
(3) soaking and stirring after Chinese parasol leaf powder and the concentrated sulfuric acid sufficiently react, cleans repeatedly, removes excessive sulfuric acid,
It seals and is put into drier after the porous material carbonizing adsorbent of preparation is dry.
Using the present embodiment method, there is a large amount of ducts, hole in the modified Chinese parasol leaf porous material surface of the concentrated sulfuric acid of preparation
Diameter size is in 100nm or so, and at 25 DEG C, under the conditions of pH=6, the adsorbance for the hexavalent chromium solution of initial concentration 10mg/L is
3.36mg/g。
Claims (2)
1. the method that the porous material of pollution of chromium in water removal is removed in a kind of modified Chinese parasol leaf production of concentrated sulfuric acid, it is characterised in that: make
Modified porous material is made with waste Chinese parasol leaf, low-temperature carbonization and modification to material, nothing are realized by concentrated sulfuric acid dipping
Need other high-temperature heating treatments；Specifically includes the following steps:
(1) Chinese parasol leaf powder is worn into after purifying Chinese parasol leaf；
(2) Chinese parasol leaf powder and the concentrated sulfuric acid are mixed with dipping；
(3) it soaking and stirring and cleans after Chinese parasol leaf powder and the concentrated sulfuric acid sufficiently react, be dried to obtain porous material.
2. the side that pollution of chromium porous material in water removal is removed in the modified Chinese parasol leaf production of a kind of concentrated sulfuric acid according to claim 1
Method, it is characterised in that: Chinese parasol leaf powder and concentrated sulfuric acid dosage mass ratio are (0.2-2) in the step (2): 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910568210.3A CN110255556A (en) | 2019-06-27 | 2019-06-27 | The method that the porous material of pollution of chromium in water removal is removed in the modified Chinese parasol leaf production of the concentrated sulfuric acid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910568210.3A CN110255556A (en) | 2019-06-27 | 2019-06-27 | The method that the porous material of pollution of chromium in water removal is removed in the modified Chinese parasol leaf production of the concentrated sulfuric acid |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818905A (en) * | 2013-10-21 | 2014-05-28 | 溧阳市浙大产学研服务中心有限公司 | Method for preparing activated carbon by using hemp stalks, walnut shells and phoenix tree leaves |
| CN105664865A (en) * | 2016-01-15 | 2016-06-15 | 济宁学院 | Modified pine leaf adsorbent for removing Cr(VI) in water and preparation method thereof |
| CN106423062A (en) * | 2016-10-31 | 2017-02-22 | 陈树沛 | Preparation method of orange-peel-based adsorbent for removing hexavalent chromium ions in water |
-
2019
- 2019-06-27 CN CN201910568210.3A patent/CN110255556A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818905A (en) * | 2013-10-21 | 2014-05-28 | 溧阳市浙大产学研服务中心有限公司 | Method for preparing activated carbon by using hemp stalks, walnut shells and phoenix tree leaves |
| CN105664865A (en) * | 2016-01-15 | 2016-06-15 | 济宁学院 | Modified pine leaf adsorbent for removing Cr(VI) in water and preparation method thereof |
| CN106423062A (en) * | 2016-10-31 | 2017-02-22 | 陈树沛 | Preparation method of orange-peel-based adsorbent for removing hexavalent chromium ions in water |
Non-Patent Citations (1)
| Title |
|---|
| YU ZHANG ET AL.: "Surface modified leaves with high efficiency for the removal of aqueous Cr(VI)", 《APPLIED SURFACE SCIENCE》 * |
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