CN110368898A - A kind of absorbent charcoal composite material and preparation method thereof for sewage treatment - Google Patents
A kind of absorbent charcoal composite material and preparation method thereof for sewage treatment Download PDFInfo
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- CN110368898A CN110368898A CN201910639913.0A CN201910639913A CN110368898A CN 110368898 A CN110368898 A CN 110368898A CN 201910639913 A CN201910639913 A CN 201910639913A CN 110368898 A CN110368898 A CN 110368898A
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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
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/14—Diatomaceous earth
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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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- 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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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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
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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
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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
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
- B01J2220/4825—Polysaccharides or cellulose materials, e.g. starch, chitin, sawdust, wood, straw, cotton
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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
- 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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- 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
- C02F2101/30—Organic compounds
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Abstract
The absorbent charcoal composite material and preparation method thereof that the invention discloses a kind of for sewage treatment.The absorbent charcoal composite material for sewage treatment, it includes the components of following parts by weight: 30~50 parts of modified activated carbon；30~50 parts of diatomite；10~20 parts of bamboo carbon；10~20 parts of macroporous absorbent resin；5~10 parts of chitosan.The absorbent charcoal composite material for sewage treatment can have suction-operated to gas chromatography and detection device for multi metallic elements.
Description
Technical field
The present invention relates to sewage treating material technical fields, and in particular to a kind of active carbon composite wood for sewage treatment
Material and preparation method thereof.
Background technique
Sewage is also known as waste water, generally includes sanitary sewage, industrial wastewater, especially industrial wastewater, is referred to as nature
One of three big public hazards.Organic matter and heavy metal element are usually contained in industrial wastewater, are flowed directly into rivers, can be led in lake
The dead of aquatic animals and plants is caused even to disappear；Industrial wastewater can also penetrate into underground water, if nearby residents are using contaminated
Surface water or underground water as domestic water, health can be endangered, severe one is dead.
Active carbon is to be pyrolyzed by the carbon containing raw material such as wooden, coal quality and petroleum coke, activate processing and be prepared, and has hair
Pore structure, biggish specific surface area and the surface chemistry group abundant reached is the common adsorbent of sewage treatment.But it is single
Active carbon it is limited for handling sewage adsorption effect, only there is preferable absorption effect to partial organic substances and heavy metal element
Fruit.Therefore, based on active carbon, work a kind of while that there is adsorption effect to most organic matters and heavy metal element is developed
Property carbon composite has broad application prospects.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of absorbent charcoal composite materials for sewage treatment；Described
Absorbent charcoal composite material for sewage treatment can have suction-operated to gas chromatography and detection device for multi metallic elements.
The concrete scheme that the present invention solves above-mentioned technical problem is as follows:
A kind of absorbent charcoal composite material for sewage treatment, it includes the components of following parts by weight: modified activated carbon 30
~50 parts；30~50 parts of diatomite；10~20 parts of bamboo carbon；10~20 parts of macroporous absorbent resin；5~10 parts of chitosan.
As a preferred embodiment, the absorbent charcoal composite material for sewage treatment, it includes following parts by weight
Component: 40~50 parts of modified activated carbon；40~50 parts of diatomite；15~20 parts of bamboo carbon；15~20 parts of macroporous absorbent resin；Shell
8~10 parts of glycan.
As a kind of most preferably scheme, the absorbent charcoal composite material for sewage treatment, it includes following weight
The component of part: 40 parts of modified activated carbon；40 parts of diatomite；15 parts of bamboo carbon；15 parts of macroporous absorbent resin；8 parts of chitosan.
As a kind of most preferably scheme, the macroporous absorbent resin is D001 type macroporous absorbent resin.
As a preferred embodiment, the modified activated carbon is prepared via a method which to obtain:
(1) active carbon is placed in nitric acid solution, 3~6h of heating reflux reaction, neutrality is then washed with water to, after dry
Obtain Carboxylation active carbon；
(2) Carboxylation active carbon and D-sorbite are added in organic solvent and are mixed, then added catalyst, added
Hot 10~16h of back flow reaction, product is washed, it is dry after D-sorbite is grafted active carbon；
(3) it takes D-sorbite grafting active carbon to be added in organic solvent with rosin to mix, catalyst is then added, is added
Hot 8~12h of back flow reaction, product is washed, it is dry after rosin-D-sorbite is grafted active carbon, the i.e. modified active
Charcoal.
As a preferred embodiment, nitric acid described in step (1) is the nitric acid that concentration is 5~8mol/L.
It is the nitric acid that concentration is 6mol/L as one kind most preferably scheme, nitric acid described in step (1).
As a preferred embodiment, the weight ratio of Carboxylation active carbon and D-sorbite is 1:6~10 in step (2).
As a kind of most preferably scheme, the weight ratio of Carboxylation active carbon and D-sorbite is 1:8 in step (2).
As a preferred embodiment, in step (2) amount ratio of Carboxylation active carbon and organic solvent be 1g:15~
25mL；The organic solvent is propylene glycol.
As a kind of most preferably scheme, the amount ratio of Carboxylation active carbon and organic solvent is 1g:20mL in step (2).
As a preferred embodiment, the amount ratio of Carboxylation active carbon and catalyst is 1:0.5~1 in step (2)；It is described
Catalyst be dicyclohexylcarbodiimide (DCC).
As a kind of most preferably scheme, the amount ratio of Carboxylation active carbon and catalyst is 1:0.8 in step (2).
As a preferred embodiment, the weight ratio of D-sorbite grafting active carbon and rosin is 1:1~2 in step (3).
As a kind of most preferably scheme, the weight ratio of D-sorbite grafting active carbon and rosin is 1:1.5 in step (3).
As a preferred embodiment, the amount ratio of D-sorbite grafting active carbon and organic solvent is 1g:10 in step (3)
~20mL；The organic solvent is ethyl alcohol.
As a kind of most preferably scheme, the amount ratio of D-sorbite grafting active carbon and organic solvent is 1g in step (3):
15mL。
As a preferred embodiment, in step (3) D-sorbite grafting active carbon and catalyst amount ratio be 1:0.1~
0.3；The catalyst is zinc oxide.
As a kind of most preferably scheme, the amount ratio of D-sorbite grafting active carbon and catalyst is 1 in step (3):
0.2。
The preparation method of the above-mentioned absorbent charcoal composite material for sewage treatment is by active carbon, diatomite, bamboo carbon, macropore
It adsorbs resin and chitosan is uniformly mixed to obtain the final product.
The utility model has the advantages that (1) present invention is for the first time by active carbon, diatomite and bamboo carbon, macroporous absorbent resin and chitosan
It is combined；Diatomite and macroporous absorbent resin have adsorption effect to organic matter in said components, and property charcoal, bamboo carbon and shell are poly-
Sugar has adsorption effect to heavy metal；The combination of said components is in sewage treatment to the adsorption capacity energy of organic matter and heavy metal
Enough learn from other's strong points to offset one's weaknesses, the absorbed species to organic matter and heavy metal ion can be widened, realized to gas chromatography and heavy metal
The absorption of ion.(2) it uses in the above-mentioned absorbent charcoal composite material for sewage treatment and is obtained by the method for the invention for the first time
Modified activated carbon, which can be realized simultaneously compared with unmodified active carbon to lead, chromium, the mercury ion in water
Efficient absorption；Wherein, the modified activated carbon is best to the adsorption effect of mercury ion, will be much to the adsorption effect of mercury ion
Better than the adsorption effect to lead, chromium ion；Embodiment experiments have shown that, which can be to the lead ion in water
Large amount of adsorption is in 40mg/g, to the large amount of adsorption of the chromium ion in water in 30mg/g, especially to the adsorbance of the mercury ion in water
Noticeably greater than 100mg/g.In addition, using modified activated carbon of the present invention excellent to be able to maintain in 5~10 ranges in pH value
Different adsorption capacity, therefore, the active carbon for sewage treatment being prepared using the modified activated carbon of the present invention
Composite material, when handling the heavy metal ion in waste water, the place of heavy metal ion is can be realized in the pH value without adjusting waste water
Reason, reduces treatment process, improves waste water treatment efficiency.
Specific embodiment
The preparation of 1 modified activated carbon of embodiment
(1) active carbon being placed in the nitric acid solution of 6mol/L, then heating reflux reaction 5h is washed with water to neutrality,
Carboxylation active carbon is obtained after drying；
(2) Carboxylation active carbon and D-sorbite are added in organic solvent propylene glycol and are mixed, then add catalyst
DCC carries out heating reflux reaction 12h, and product is washed with water, and obtains D-sorbite after dry and is grafted active carbon；Wherein Carboxylation work
Property charcoal and D-sorbite weight ratio be 1:8；Carboxylation active carbon and the amount ratio of organic solvent propylene glycol are 1g:20mL；Carboxylic
The amount ratio of souring activity charcoal and catalyst DCC are 1:0.8；
(3) it takes D-sorbite grafting active carbon to be added in organic solvent ethyl alcohol with rosin to mix, catalyst oxygen is then added
Change zinc, carry out heating reflux reaction 10h, product ethanol washing obtains rosin-D-sorbite after dry and is grafted active carbon, i.e. institute
The modified activated carbon stated；Wherein the weight ratio of D-sorbite grafting active carbon and rosin is 1:1.5, and D-sorbite is grafted active carbon
Amount ratio with organic solvent ethyl alcohol is 1g:15mL, and it is 1 that D-sorbite, which is grafted active carbon and the amount ratio of catalyst zinc oxide:
0.2。
The modified activated carbon 1g for taking the present embodiment to be prepared is respectively placed in 1L plumbi nitras containing 150mg, chromic nitrate, mercuric nitrate
Aqueous solution in, pH be 7, temperature be 25 DEG C at concussion absorption 2h；Then modified activated carbon is calculated to lead, chromium, mercury ion
Adsorbance is respectively 48.5mg/g, 34.7mg/g and 117.2mg/g.Adsorbance is to adsorb plumbi nitras, nitric acid in preceding aqueous solution
The difference of the content of plumbi nitras, chromic nitrate, mercuric nitrate in chromium, the content of mercuric nitrate and absorption rear solution.The plumbi nitras,
Chromic nitrate, mercuric nitrate content use ICP spectrographic determination (similarly hereinafter).
The modified activated carbon 1g for taking the present embodiment to be prepared is respectively placed in 1L plumbi nitras containing 150mg, chromic nitrate, mercuric nitrate
Aqueous solution in, pH be 5, temperature be 40 DEG C at concussion absorption 2h；Then modified activated carbon is calculated to lead, chromium, mercury ion
Adsorbance is respectively 44.3mg/g, 36.2mg/g and 102.4mg/g.
The modified activated carbon 1g for taking the present embodiment to be prepared is respectively placed in 1L plumbi nitras containing 150mg, chromic nitrate, mercuric nitrate
Aqueous solution in, pH be 10, temperature be 5 DEG C at concussion absorption 2h；Then modified activated carbon is calculated to lead, chromium, mercury ion
Adsorbance is respectively 40.1mg/g, 32.8mg/g and 100.6mg/g.
Above-mentioned experiment show modified activated carbon that the present embodiment is prepared its to the large amount of adsorption of lead ion in 40mg/
G is especially noticeably greater than 100mg/g to the adsorbance of the mercury ion in water to the large amount of adsorption of the chromium ion in water in 30mg/g；
Illustrate that it has excellent adsorption effect to lead, chromium, the mercury ion in water；It is especially more significant to the adsorption effect of mercury ion.
In conclusion being used for the absorbent charcoal composite material of sewage treatment using modified active preparation, can be used for
The absorbent charcoal composite material of sewage treatment has stronger adsorption capacity to lead, chromium, mercury ion, especially can further be promoted pair
The adsorption capacity of mercury ion；In addition, it can also be seen that the modified activated carbon that is prepared of the present embodiment is 5 from above-mentioned experiment
~40 DEG C, pH value keeps good adsorption activity in the range of being 5~10, therefore, is used for using modified activated carbon preparation
The absorbent charcoal composite material of sewage treatment, which ensure that when handling the heavy metal ion in waste water, without heating, without adjustment
The processing of heavy metal ion can be realized in the pH value of waste water, reduces treatment process, improves waste water treatment efficiency.
The preparation of 2 modified activated carbon of embodiment
(1) active carbon being placed in the nitric acid solution of 5mol/L, then heating reflux reaction 6h is washed with water to neutrality,
Carboxylation active carbon is obtained after drying；
(2) Carboxylation active carbon and D-sorbite are added in organic solvent propylene glycol and are mixed, then add catalyst
DCC carries out heating reflux reaction 16h, and product is washed with water, and obtains D-sorbite after dry and is grafted active carbon；Wherein Carboxylation work
Property charcoal and D-sorbite weight ratio be 1:6；Carboxylation active carbon and the amount ratio of organic solvent propylene glycol are 1g:15mL；Carboxylic
The amount ratio of souring activity charcoal and catalyst DCC are 1:0.5；
(3) it takes D-sorbite grafting active carbon to be added in organic solvent ethyl alcohol with rosin to mix, catalyst oxygen is then added
Change zinc, carry out heating reflux reaction 8h, product ethanol washing obtains rosin-D-sorbite after dry and is grafted active carbon, i.e., described
Modified activated carbon；Wherein the weight ratio of D-sorbite grafting active carbon and rosin is 1:1, and D-sorbite is grafted active carbon and has
The amount ratio of solvent ethyl alcohol is 1g:20mL, and it is 1:0.3 that D-sorbite, which is grafted active carbon and the amount ratio of catalyst zinc oxide,.
The modified activated carbon 1g for taking the present embodiment to be prepared is respectively placed in 1L plumbi nitras containing 150mg, chromic nitrate, mercuric nitrate
Aqueous solution in, pH be 7, temperature be 25 DEG C at concussion absorption 2h；Then modified activated carbon is calculated to lead, chromium, mercury ion
Adsorbance is respectively 41.2mg/g, 32.5mg/g and 105.4mg/g.
It is excellent that above-mentioned experiment shows that the modified activated carbon that the present embodiment is prepared has lead, chromium, the mercury ion in water
Adsorption effect；It is especially more significant to the adsorption effect of mercury ion.Therefore, using modified activated carbon preparation at sewage
The absorbent charcoal composite material of reason can make the absorbent charcoal composite material for sewage treatment have lead, chromium, mercury ion stronger
Adsorption capacity, especially can further promote the adsorption capacity to mercury ion.
The preparation of 3 modified activated carbon of embodiment
(1) active carbon being placed in the nitric acid solution of 8mol/L, then heating reflux reaction 4h is washed with water to neutrality,
Carboxylation active carbon is obtained after drying；
(2) Carboxylation active carbon and D-sorbite are added in organic solvent propylene glycol and are mixed, then add catalyst
DCC carries out heating reflux reaction 10h, and product is washed with water, and obtains D-sorbite after dry and is grafted active carbon；Wherein Carboxylation work
Property charcoal and D-sorbite weight ratio be 1:10；Carboxylation active carbon and the amount ratio of organic solvent propylene glycol are 1g:25mL；Carboxylic
The amount ratio of souring activity charcoal and catalyst DCC are 1:1；
(3) it takes D-sorbite grafting active carbon to be added in organic solvent ethyl alcohol with rosin to mix, catalyst oxygen is then added
Change zinc, carry out heating reflux reaction 12h, product ethanol washing obtains rosin-D-sorbite after dry and is grafted active carbon, i.e. institute
The modified activated carbon stated；Wherein D-sorbite grafting active carbon and rosin weight ratio be 1:2, D-sorbite be grafted active carbon with
The amount ratio of organic solvent ethyl alcohol is 1g:10mL, and it is 1 that D-sorbite, which is grafted active carbon and the amount ratio of catalyst zinc oxide:
0.1。
The modified activated carbon 1g for taking the present embodiment to be prepared is respectively placed in 1L plumbi nitras containing 150mg, chromic nitrate, mercuric nitrate
Aqueous solution in, pH be 7, temperature be 25 DEG C at concussion absorption 2h；Then modified activated carbon living is calculated to lead, chromium, mercury ion
Adsorbance be respectively 40.2mg/g, 33.6mg/g and 101.3mg/g.
It is excellent that above-mentioned experiment shows that the modified activated carbon that the present embodiment is prepared has lead, chromium, the mercury ion in water
Adsorption effect；It is especially more significant to the adsorption effect of mercury ion.Therefore, using modified activated carbon preparation at sewage
The absorbent charcoal composite material of reason can make the absorbent charcoal composite material for sewage treatment have lead, chromium, mercury ion stronger
Adsorption capacity, especially can further promote the adsorption capacity to mercury ion.
The preparation of 1 modified activated carbon of comparative example
(1) active carbon being placed in the nitric acid solution of 6mol/L, then heating reflux reaction 5h is washed with water to neutrality,
Carboxylation active carbon is obtained after drying；
(2) Carboxylation active carbon and D-sorbite are added in organic solvent propylene glycol and are mixed, then add catalyst
DCC carries out heating reflux reaction 12h, and product is washed with water, and D-sorbite is obtained after dry and is grafted active carbon, the i.e. modification
Active carbon；Wherein the weight ratio of Carboxylation active carbon and D-sorbite is 1:8；Carboxylation active carbon and organic solvent propylene glycol
Amount ratio is 1g:20mL；The amount ratio of Carboxylation active carbon and catalyst DCC are 1:0.8.
Comparative example 1 the difference from embodiment 1 is that, comparative example 1 is modified only with D-sorbite, and does not use further
Rosin carries out graft modification.
The modified activated carbon 1g for taking the present embodiment to be prepared is respectively placed in 1L plumbi nitras containing 150mg, chromic nitrate, mercuric nitrate
Aqueous solution in, pH be 7, temperature be 25 DEG C at concussion absorption 2h；Then modified activated carbon is calculated to lead, chromium, mercury ion
Adsorbance is respectively 18.3mg/g, 16.1mg/g and 25.3mg/g.It is far smaller than the adsorbance of lead, chromium, mercury ion real
Apply 44.3mg/g, 36.2mg/g and 102.4mg/g of example 1.Above-mentioned experiment shows that active carbon is only modified through D-sorbite,
And the modified active that graft modification there cannot be excellent adsorption effect to lead, chromium, mercury ion is not further carried out using rosin
Charcoal.
Therefore, it is used for the absorbent charcoal composite material of sewage treatment using the preparation of modified active described in comparative example 1, does not increase
Its strong adsorption capacity to lead, chromium, mercury ion.
The preparation of the preparation of 2 modified activated carbon of comparative example
(1) active carbon being placed in the nitric acid solution of 6mol/L, then heating reflux reaction 5h is washed with water to neutrality,
Carboxylation active carbon is obtained after drying；
(2) Carboxylation active carbon and D-sorbite are added in organic solvent propylene glycol and are mixed, then add catalyst
DCC carries out heating reflux reaction 12h, and product is washed with water, and obtains D-sorbite after dry and is grafted active carbon；Wherein Carboxylation work
Property charcoal and D-sorbite weight ratio be 1:8；Carboxylation active carbon and the amount ratio of organic solvent propylene glycol are 1g:20mL；Carboxylic
The amount ratio of souring activity charcoal and catalyst DCC are 1:0.8；
(3) it takes D-sorbite grafting active carbon to be added in organic solvent ethyl alcohol with oily nanmu resinon to mix, is then added and urges
Agent zinc oxide, carries out heating reflux reaction 10h, and product ethanol washing obtains oily nanmu resinon-D-sorbite grafting after dry
Active carbon, the i.e. preparation of the modified activated carbon；Wherein D-sorbite grafting active carbon and the weight ratio of oily nanmu resinon are
1:1.5, the amount ratio that D-sorbite is grafted active carbon and organic solvent ethyl alcohol is 1g:15mL, D-sorbite be grafted active carbon with
The amount ratio of catalyst zinc oxide is 1:0.2.
Comparative example 2 the difference from embodiment 1 is that, comparative example 2 by active carbon after D-sorbite graft modification, further
Graft modification is carried out through other vegetable fat (oily nanmu resinon), rather than rosin is used to carry out graft modification.
The modified activated carbon 1g for taking the present embodiment to be prepared is respectively placed in 1L plumbi nitras containing 150mg, chromic nitrate, mercuric nitrate
Aqueous solution in, pH be 7, temperature be 25 DEG C at concussion absorption 2h；Then modified activated carbon is calculated to lead, chromium, mercury ion
Adsorbance is respectively 14.1mg/g, 15.2mg/g and 20.7mg/g.It is far smaller than the adsorbance of lead, chromium, mercury ion real
Apply 44.3mg/g, 36.2mg/g and 102.4mg/g of example 1；Again smaller than comparative example 1 18.3mg/g, 16.1mg/g and
25.3mg/g。
Above-mentioned experiment shows that active carbon is modified through D-sorbite, further selects which kind of vegetable fat to carry out grafting and changes
Property the absorption property of lead, chromium, mercury ion is influenced it is very big；The selection of vegetable fat is improper can not to improve it to lead, chromium, mercury
The absorption property of ion, reduces absorption property instead, is such as further wanted using the oily modified absorption property of nanmu resinon
The modified activated carbon not modified using oily nanmu resinon less than comparative example 1.And it is obtained after further carrying out graft modification using rosin
The modified activated carbon of the embodiment 1 arrived has obtained significantly improving to the absorption property of lead, chromium, mercury ion.Therefore, it uses
Modified active described in comparative example 2 preparation be used for sewage treatment absorbent charcoal composite material, do not enhance its to lead, chromium, mercury from
The adsorption capacity of son.
Preparation of the embodiment 4 for the absorbent charcoal composite material of sewage treatment
15 parts of 40 parts of 40 parts of modified activated carbon, diatomite, bamboo carbon that embodiment 1 is prepared, D001 type macroporous absorption
15 parts of resin and 8 parts of the chitosan uniformly mixed absorbent charcoal composite materials for sewage treatment to obtain the final product.
1 completely new approach system of embodiment is used for the absorbent charcoal composite material of sewage treatment as described in the present embodiment
Standby obtained modified activated carbon, so that the absorbent charcoal composite material has stronger adsorption capacity to lead, chromium, mercury ion, especially
It is the adsorption capacity that can be further promoted to mercury ion；Further, since modified activated carbon described in embodiment 1 is at 5~40 DEG C, pH
Value keeps good adsorption activity in the range of being 5~10；Therefore, using the work for being used for sewage treatment described in the embodiment
Property carbon composite handle waste water in heavy metal ion when, without heating, the pH value without adjusting waste water can be realized weight
The processing of metal ion, reduces treatment process, improves waste water treatment efficiency.
Preparation of the embodiment 5 for the absorbent charcoal composite material of sewage treatment
10 parts of 30 parts of 50 parts of modified activated carbon, diatomite, bamboo carbon that embodiment 1 is prepared, D001 type macroporous absorption
20 parts of resin and 5 parts of the chitosan uniformly mixed absorbent charcoal composite materials for sewage treatment to obtain the final product.
1 completely new approach system of embodiment is used for the absorbent charcoal composite material of sewage treatment as described in the present embodiment
Standby obtained modified activated carbon, so that the absorbent charcoal composite material has stronger adsorption capacity to lead, chromium, mercury ion, especially
It is the adsorption capacity that can be further promoted to mercury ion.Further, since modified activated carbon described in embodiment 1 is at 5~40 DEG C, pH
Value keeps good adsorption activity in the range of being 5~10；Therefore, using the work for being used for sewage treatment described in the embodiment
Property carbon composite handle waste water in heavy metal ion when, without heating, the pH value without adjusting waste water can be realized weight
The processing of metal ion, reduces treatment process, improves waste water treatment efficiency.
Preparation of the embodiment 6 for the absorbent charcoal composite material of sewage treatment
20 parts of 50 parts of 30 parts of modified activated carbon, diatomite, bamboo carbon that embodiment 1 is prepared, D001 type macroporous absorption
10 parts of resin and 1 part of the chitosan uniformly mixed absorbent charcoal composite material for sewage treatment to obtain the final product.
1 completely new approach system of embodiment is used for the absorbent charcoal composite material of sewage treatment as described in the present embodiment
Standby obtained modified activated carbon, so that the absorbent charcoal composite material has stronger adsorption capacity to lead, chromium, mercury ion, especially
It is the adsorption capacity that can be further promoted to mercury ion.Further, since modified activated carbon described in embodiment 1 is at 5~40 DEG C, pH
Value keeps good adsorption activity in the range of being 5~10；Therefore, using the work for being used for sewage treatment described in the embodiment
Property carbon composite handle waste water in heavy metal ion when, without heating, the pH value without adjusting waste water can be realized weight
The processing of metal ion, reduces treatment process, improves waste water treatment efficiency.
Claims (9)
1. a kind of absorbent charcoal composite material for sewage treatment, which is characterized in that the component comprising following parts by weight: modified to live
30~50 parts of charcoal of property；30~50 parts of diatomite；10~20 parts of bamboo carbon；10~20 parts of macroporous absorbent resin；Chitosan 5~
10 parts.
2. the absorbent charcoal composite material according to claim 1 for sewage treatment, which is characterized in that include following weight
The component of part: 40~50 parts of modified activated carbon；40~50 parts of diatomite；15~20 parts of bamboo carbon；Macroporous absorbent resin 15~
20 parts；8~10 parts of chitosan.
3. the absorbent charcoal composite material according to claim 2 for sewage treatment, which is characterized in that include following weight
The component of part: 40 parts of modified activated carbon；40 parts of diatomite；15 parts of bamboo carbon；15 parts of macroporous absorbent resin；8 parts of chitosan.
4. the absorbent charcoal composite material according to claim 1 for sewage treatment, which is characterized in that the macropore is inhaled
Attached resin is D001 type macroporous absorbent resin.
5. the absorbent charcoal composite material according to claim 1 for sewage treatment, which is characterized in that the modified work
Property charcoal is prepared via a method which to obtain:
(1) active carbon is placed in nitric acid solution, 3~6h of heating reflux reaction, is then washed with water to neutrality, obtains carboxylic after dry
Souring activity charcoal；
(2) Carboxylation active carbon and D-sorbite are added in organic solvent and are mixed, then added catalyst, heat back
Stream 10~16h of reaction, product is washed, it is dry after D-sorbite is grafted active carbon；
(3) it takes D-sorbite grafting active carbon to be added in organic solvent with rosin to mix, catalyst is then added, heats back
Stream 8~12h of reaction, product is washed, it is dry after rosin-D-sorbite is grafted active carbon, the i.e. modified activated carbon.
6. the absorbent charcoal composite material according to claim 5 for sewage treatment, which is characterized in that
Nitric acid described in step (1) is the nitric acid that concentration is 5~8mol/L.
7. the absorbent charcoal composite material according to claim 5 for sewage treatment, which is characterized in that
The weight ratio of Carboxylation active carbon and D-sorbite is 1:6~10 in step (2)；In step (2) Carboxylation active carbon with
The amount ratio of organic solvent is 1g:15~25mL；In step (2) amount ratio of Carboxylation active carbon and catalyst be 1:0.5~
1；The catalyst is dicyclohexylcarbodiimide.
8. the absorbent charcoal composite material according to claim 5 for sewage treatment, which is characterized in that mountain in step (3)
It is 1:1~2 that pears sugar alcohol, which is grafted active carbon and the weight ratio of rosin,；D-sorbite grafting active carbon and organic solvent in step (3)
Amount ratio be 1g:10~20mL；The organic solvent is ethyl alcohol；D-sorbite grafting active carbon and catalysis in step (3)
The amount ratio of agent is 1:0.1~0.3；The catalyst is zinc oxide.
9. the preparation method of the absorbent charcoal composite material according to any one of claims 1 to 8 for sewage treatment, feature exist
In active carbon, diatomite, bamboo carbon, macroporous absorbent resin and chitosan is uniformly mixed to obtain the final product.
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| CN115385459A (en) * | 2021-05-25 | 2022-11-25 | 宁波书通科技有限公司 | Polyol grafted modified activated carbon composite material for sewage treatment and preparation method thereof |
| CN115382507A (en) * | 2021-05-25 | 2022-11-25 | 宁波书通科技有限公司 | Polyol grafted activated carbon composite material and preparation method and application thereof |
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