CN104437359A - Preparation method and application of composite bentonite for wastewater treatment - Google Patents
Preparation method and application of composite bentonite for wastewater treatment Download PDFInfo
- Publication number
- CN104437359A CN104437359A CN201410557305.2A CN201410557305A CN104437359A CN 104437359 A CN104437359 A CN 104437359A CN 201410557305 A CN201410557305 A CN 201410557305A CN 104437359 A CN104437359 A CN 104437359A
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- bentonite
- wastewater treatment
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- graphite oxide
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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
- B01J20/12—Naturally occurring clays or bleaching earth
-
- 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
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- B01J2220/42—Materials comprising a mixture of inorganic materials
-
- 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
- B01J2220/4806—Sorbents characterised by the starting material used for their preparation the starting material being of inorganic character
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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
- C02F2101/308—Dyes; Colorants; Fluorescent agents
Abstract
The invention relates to a wastewater treatment adsorbent, and particularly relates to a preparation method and application of composite bentonite for wastewater treatment. The composite bentonite is prepared from the following raw materials in parts by weight: 50 parts of bentonite and 0.5-2 parts of graphite oxide; the preparation method comprises the following steps: dispersing the bentonite in water by using ultrasonic waves to obtain a uniform bentonite suspension; dispersing the graphite oxide in water, and stripping by using ultrasonic waves to obtain a uniform graphite oxide solution; and mixing the bentonite suspension with the graphite oxide solution, centrifugally dehydrating and washing, and drying to obtain the composite bentonite for wastewater treatment. The composite bentonite for wastewater treatment, disclosed by the invention, is simple in synthesis method, low in production cost, simple to operate when used for removing organic dyes from water, friendly to environment, obviously better than existing natural bentonite in organic dye adsorption and good in industrial application prospect.
Description
Technical field
The present invention relates to a kind of Wastewater processing absorbent, be specially the preparation method for the composite bentonite of wastewater treatment and application process.
Background technology
The organic dyestuff processing method of dyeing and printing sewage mainly contains Physical, chemical method and electrolysis.Wherein simple and effective with the adsorption bleaching of Physical.At present, the decolorizing adsorbent be most widely used is active carbon.But active carbon price is high and the not easily problem such as regeneration, makes it apply limited.Therefore, develop the adsorbent of high efficiency low cost and study hotspot is treated as dyeing waste water.
Bentonite is a kind of nonmetallic minerals of extensive distribution, and be take montmorillonite as 2: 1 type layered hydrous aluminosilicate clays mineral of main component, each crystal layer is formed by pressing from both sides one deck alumina octahedral in two-layer silicon-oxy tetrahedron.The silica structure on bentonite surface and the hydration of interlayer cation, make it have hydrophily, there is special water absorption behavior, simultaneously, there is a large amount of tradable cation as Ca, Na, K etc. in interlayer, these ions and montmorillonite structure cell effect instability, be easy to be partially or completely exchanged by other cations, have larger specific area and controlled interlamellar spacing.Therefore, bentonitic this interlayer structure characteristic sum surface characteristic imparts its good absorption property, and it has broad application prospects in Industrial Wastewater Treatment as a kind of natural Low Cost Sorbents.But, because natural bentonite hydrophily is strong, undesirable to organic absorption, simultaneously, the Si-O/Al-O base Limited Number on bentonite surface, bonding force are not strong, the restriction of montmorillonite kind and content contained by interlayer cation exchange capacity is interior by bentonite, its absorption property is more weak, can not meet industrial actual demand.
Graphene oxide is a kind of New Two Dimensional material with carbon element be made up of carbon atom, its two-dimentional basal plane is connected with some functional groups, as hydroxyl, epoxy radicals, carbonyl, carboxyl etc.Graphene oxide has perfect physicochemical characteristics and high specific area, and physico-chemical property is stablized, and has pi-electron conjugated structure.This feature of Graphene self becomes the excellent adsorbent of the one removing dyestuff, heavy metal in water.Therefore graphene oxide has very large potentiality in adsorbing domain.But single graphene oxide composite material, as sorbent material, by the defect that it is easily reunited, causes its specific area to reduce, thus greatly reduces it as adsorber material adsorbs capacity, limit its application in water treatment.
Summary of the invention
For above-mentioned technical problem, the invention provides composite bentonite for removing organic dyestuff in sewage and preparation method thereof, in order to overcome in prior art because bentonite has hydrophily, make it remove the shortcoming that in sewage, organic dyestuff absorption property is lower, also overcome single grapheme material simultaneously and easily reunite as sorbent material and reduce the defect of adsorption efficiency.The invention provides the preparation method of a kind of composite bentonite-bentonite Graphene, the method environmental friendliness, simple to operate, the Adsorbent For Removal of Heavy Methylene Blue clearance prepared by the method is high, practical.Present invention also offers a kind of composite bentonite adsorbent prepared by said method at the application process removing water Methylene Blue, utilize above-mentioned adsorbent, can effectively remove water Methylene Blue, the processing time is short, and clearance is high simultaneously.Technical scheme of the present invention is:
1., for the preparation method of the composite bentonite of sewage disposal, comprising:
Obtained according to parts by weight by following raw material: bentonite 50 parts, graphite oxide 0.5-2 part;
Its preparation method comprises the following steps:
(1) take bentonite according to parts by weight, bentonite is dispersed in water, with ultrasonic wave dispersion, obtain uniform medicinal bentonite suspension;
(2) take graphite oxide according to parts by weight, graphite oxide is dispersed in water, peel off with ultrasonic wave and obtain uniform graphene oxide solution;
(3) by medicinal bentonite suspension, graphene oxide solution mixing, then through centrifugal dehydration and washing, the composite bentonite namely obtained for sewage disposal is dried.
2. the above-mentioned composite bentonite prepared removes the application process of water Methylene Blue:
The adsorbent of above-mentioned preparation is directly put in the waste water containing methylene blue, vibrate under room temperature, utilize centrifuge separating adsorbent and processed waste water.Adsorption operations is simple, convenient.
Composite bentonite for wastewater treatment provided by the invention, for removing organic dyestuff from waste water, bentonite be main body mix with small amounts graphite carry out reaction obtain, synthetic method is simple, and environmental protection, does not need additionally to add chemical reagent, handling safety, manufacturing cycle is short, and low in raw material price is also easy to get, and production cost is low.Prepared composite bentonite efficiently, fast can remove organic dyestuff, and absorption property is obviously better than existing natural montmorillonite.
Accompanying drawing explanation
Fig. 1 is that the composite bentonite of embodiment and the bentonite of comparative example are to the removal effect effect diagram of methylene blue;
Fig. 2 be the composite bentonite of embodiment and the bentonite of comparative example 40 minutes time to the adsorbance block diagram of methylene blue.
Detailed description of the invention
Embodiment 1
To take 0.5g bentonite is dispersed in 100mL water, and ultrasonic wave dispersion 30min, obtains uniform suspension A; Take 0.005g graphite oxide, be dispersed in the 100mL aqueous solution, ultrasonic wave peels off 1h, obtains graphene oxide solution B; By A, B two solution at room temperature mix about 6h, then centrifugal, washing, dry and obtain bentonite and graphene oxide compound.The ratio of bentonite MMT and graphene oxide GO is 50: 0.5.
Embodiment 2
To take 0.5g bentonite is dispersed in 100mL water, and ultrasonic wave dispersion 30min, obtains uniform suspension A; Take 0.01g graphite oxide, be dispersed in the 100mL aqueous solution, ultrasonic wave peels off 1h, obtains graphene oxide solution B; By A, B two solution at room temperature mix about 6h, then centrifugal, washing, dry and obtain bentonite and graphene oxide compound.The ratio of MMT and GO is 50: 1.
Embodiment 3
To take 0.5g bentonite is dispersed in 100mL water, and ultrasonic wave dispersion 30min, obtains uniform suspension A; Take 0.015g graphite oxide, be dispersed in the 100mL aqueous solution, ultrasonic wave peels off 1h, obtains graphene oxide solution B; By A, B two solution at room temperature mix about 6h, then centrifugal, washing, dry and obtain bentonite and graphene oxide compound.The ratio of MMT and GO is 50: 1.5.
Embodiment 4
To take 0.5g bentonite is dispersed in 100mL water, and ultrasonic wave dispersion 30min, obtains uniform suspension A; Take 0.02g graphite oxide, be dispersed in the 100mL aqueous solution, ultrasonic wave peels off 1h, obtains graphene oxide solution B; By A, B two solution at room temperature mix about 6h, then centrifugal, washing, dry and obtain bentonite and graphene oxide compound.The ratio of MMT and GO is 50: 2.
Prepared composite bentonite is used for adsorbed water Methylene Blue:
Application Example 1
(then GO/MMT, MMT: GO=50: 2) join in 100mL conical flask add 50mL initial concentration 300mg L wherein to take 0.02g composite bentonite
-1methylene blue solution, put into oscillator shaken at room temperature, interval different time sample, centrifugal, supernatant is carried out uv-visible absorption spectra test, show that compound is to methylene blue clearance.
Application Example 2
(then GO/MMT, MMT: GO=50: 1.5) join in 100mL conical flask add 50mL initial concentration 300mg L wherein to take 0.02g composite bentonite
-1methylene blue solution, put into oscillator shaken at room temperature, interval different time sample, centrifugal, supernatant is carried out uv-visible absorption spectra test, show that compound is to methylene blue clearance.
Application Example 3
(then GO/MMT, MMT: GO=50: 1) join in 100mL conical flask add 50mL initial concentration 300mg L wherein to take 0.02g composite bentonite
-1methylene blue solution, put into oscillator shaken at room temperature, interval different time sample, centrifugal, supernatant is carried out uv-visible absorption spectra test, show that compound is to methylene blue clearance.
Application Example 4
(then GO/MMT, MMT: GO=50: 0.5) join in 100mL conical flask add 50mL initial concentration 300mg L wherein to take 0.02g composite bentonite
-1methylene blue solution, put into oscillator shaken at room temperature, interval different time sample, centrifugal, supernatant is carried out uv-visible absorption spectra test, show that compound is to methylene blue clearance.
Comparative example
Taking 0.02g bentonite joins in 100mL conical flask, then adds 50mL initial concentration 300mg L wherein
-1methylene blue solution, put into oscillator shaken at room temperature, interval different time sample, centrifugal, supernatant is carried out uv-visible absorption spectra test, show that bentonite is to methylene blue clearance.
The ratio regular meeting of bentonite and graphite oxide affects the clearance of methylene blue.In front 10min, composite bentonite (GO/MMT, MMT: GO=50: 2) to high concentration methylene blue (300mg L
-1) clearance of solution just can reach 81%, and bentonitic clearance is only 64%.When 100min, bentonite graphene complex (GO/MMT) is to methylene blue (300mg L
-1) solution removal rate reaches 99%, substantially reaches balance.So composite bentonite (GO/MMT) can remove the methylene blue in the aqueous solution efficiently, fast, substantially increases the efficiency of bentonite for dye wastewater treatment.
The composite bentonite of embodiments of the invention and the bentonite in treatment waste water effect of comparative example are as depicted in figs. 1 and 2, Fig. 1 be the composite bentonite of embodiment and the bentonite of comparative example to the removal effect effect diagram of methylene blue, the initial concentration of methylene blue is 300mg L
-1.Fig. 2 be the composite bentonite of embodiment and the bentonite of comparative example 40 minutes time to the adsorbance block diagram of methylene blue, the initial concentration of methylene blue is 300mg L
-1.From interpretation of result, composite bentonite adsorption effect provided by the invention is obviously better than the effect of comparative example.
Claims (3)
1. for the composite bentonite of wastewater treatment, it is characterized in that: obtained according to parts by weight by following raw material: bentonite 50 parts, graphite oxide 0.5-2 part.
2. the composite bentonite for sewage disposal according to claim 1, is characterized in that: preparation method comprises the following steps:
(1) take bentonite according to parts by weight, bentonite is dispersed in water, with ultrasonic wave dispersion, obtain uniform medicinal bentonite suspension;
(2) take graphite oxide according to parts by weight, graphite oxide is dispersed in water, peel off with ultrasonic wave and obtain uniform graphene oxide solution;
(3) by medicinal bentonite suspension, graphene oxide suspension mixing, then through centrifugal dehydration and washing, the composite bentonite namely obtained for wastewater treatment is dried.
3. for the application process of the composite bentonite of wastewater treatment, it is characterized in that, the composite bentonite being used for wastewater treatment is directly put in the waste water containing methylene blue as adsorbent, vibrates under room temperature, utilize centrifuge separating adsorbent and processed waste water.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410557305.2A CN104437359A (en) | 2014-10-17 | 2014-10-17 | Preparation method and application of composite bentonite for wastewater treatment |
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| CN201410557305.2A CN104437359A (en) | 2014-10-17 | 2014-10-17 | Preparation method and application of composite bentonite for wastewater treatment |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106902762A (en) * | 2017-03-31 | 2017-06-30 | 济南大学 | A kind of preparation and application of magnetic aerobic particle mud graphene oxide multi-walled carbon nano-tubes compound adsorbent |
| CN106943986A (en) * | 2017-03-17 | 2017-07-14 | 四川建筑职业技术学院 | A kind of preparation method of bentonite material for air purification |
| CN107159118A (en) * | 2017-06-09 | 2017-09-15 | 南华大学 | A kind of efficient uranium absorption agent of bentonite grafted graphene oxide and preparation method thereof |
| CN109012642A (en) * | 2018-09-08 | 2018-12-18 | 佛山市森昂生物科技有限公司 | A kind of preparation method of diatomite based composite adsorption material |
| CN110342604A (en) * | 2019-06-13 | 2019-10-18 | 南京工业大学 | Graphene-montmorillonite material absorption rhodamine B method |
| CN110694586A (en) * | 2019-10-17 | 2020-01-17 | 生态环境部南京环境科学研究所 | Composite material for efficiently adsorbing antibiotics in water body, preparation method and application |
| CN111689503A (en) * | 2020-05-14 | 2020-09-22 | 金华市萌源环境科技有限公司 | Nano composite material for paint spraying wastewater treatment, preparation method and application |
| CN111732145A (en) * | 2019-11-07 | 2020-10-02 | 广和环保科技(深圳)有限公司 | Water treatment agent and preparation method thereof |
| CN111847568A (en) * | 2020-08-03 | 2020-10-30 | 肖满香 | Wastewater treatment agent, preparation method and metal wastewater treatment method |
| CN112076753A (en) * | 2020-09-08 | 2020-12-15 | 黎云 | Treating agent for printing and dyeing wastewater and preparation method thereof |
| CN112156764A (en) * | 2020-09-15 | 2021-01-01 | 凯盛石墨碳材料有限公司 | Nano TiO (titanium dioxide)2Modified graphene oxide/organic bentonite composite material and preparation method thereof |
| CN113145072A (en) * | 2021-04-22 | 2021-07-23 | 福州大学 | Graphene/modified bentonite composite material prepared by ball milling method and application thereof |
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| CN106943986A (en) * | 2017-03-17 | 2017-07-14 | 四川建筑职业技术学院 | A kind of preparation method of bentonite material for air purification |
| CN106902762A (en) * | 2017-03-31 | 2017-06-30 | 济南大学 | A kind of preparation and application of magnetic aerobic particle mud graphene oxide multi-walled carbon nano-tubes compound adsorbent |
| CN107159118A (en) * | 2017-06-09 | 2017-09-15 | 南华大学 | A kind of efficient uranium absorption agent of bentonite grafted graphene oxide and preparation method thereof |
| CN107159118B (en) * | 2017-06-09 | 2020-05-19 | 南华大学 | Efficient uranium adsorbent of bentonite grafted graphene oxide and preparation method thereof |
| CN109012642A (en) * | 2018-09-08 | 2018-12-18 | 佛山市森昂生物科技有限公司 | A kind of preparation method of diatomite based composite adsorption material |
| CN110342604A (en) * | 2019-06-13 | 2019-10-18 | 南京工业大学 | Graphene-montmorillonite material absorption rhodamine B method |
| CN110694586A (en) * | 2019-10-17 | 2020-01-17 | 生态环境部南京环境科学研究所 | Composite material for efficiently adsorbing antibiotics in water body, preparation method and application |
| CN110694586B (en) * | 2019-10-17 | 2022-04-29 | 生态环境部南京环境科学研究所 | Composite material for efficiently adsorbing antibiotics in water body, preparation method and application |
| CN111732145A (en) * | 2019-11-07 | 2020-10-02 | 广和环保科技(深圳)有限公司 | Water treatment agent and preparation method thereof |
| CN111689503A (en) * | 2020-05-14 | 2020-09-22 | 金华市萌源环境科技有限公司 | Nano composite material for paint spraying wastewater treatment, preparation method and application |
| CN111847568A (en) * | 2020-08-03 | 2020-10-30 | 肖满香 | Wastewater treatment agent, preparation method and metal wastewater treatment method |
| CN111847568B (en) * | 2020-08-03 | 2022-12-13 | 中创水务科技环保(广东)有限公司 | Wastewater treatment agent, preparation method and metal wastewater treatment method |
| CN112076753A (en) * | 2020-09-08 | 2020-12-15 | 黎云 | Treating agent for printing and dyeing wastewater and preparation method thereof |
| CN112076753B (en) * | 2020-09-08 | 2021-09-17 | 浙江中科环境股份有限公司 | Treating agent for printing and dyeing wastewater and preparation method thereof |
| CN112156764A (en) * | 2020-09-15 | 2021-01-01 | 凯盛石墨碳材料有限公司 | Nano TiO (titanium dioxide)2Modified graphene oxide/organic bentonite composite material and preparation method thereof |
| CN113145072A (en) * | 2021-04-22 | 2021-07-23 | 福州大学 | Graphene/modified bentonite composite material prepared by ball milling method and application thereof |
| CN113145072B (en) * | 2021-04-22 | 2023-05-23 | 福州大学 | Graphene/modified bentonite composite material prepared by ball milling method and application thereof |
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Application publication date: 20150325 |