CN105618004A - Preparation method of calcium carbonate-based chelate sorbent - Google Patents

Preparation method of calcium carbonate-based chelate sorbent Download PDF

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Publication number
CN105618004A
CN105618004A CN201610183803.4A CN201610183803A CN105618004A CN 105618004 A CN105618004 A CN 105618004A CN 201610183803 A CN201610183803 A CN 201610183803A CN 105618004 A CN105618004 A CN 105618004A
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Prior art keywords
calcium carbonate
chelate sorbent
preparation
modified starch
coupling agent
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CN201610183803.4A
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CN105618004B (en
Inventor
汤泉
谢微
陈珍明
钟星
郭啟萍
李健逢
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Hezhou Kunde Environmental Protection Technology Co.,Ltd.
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Hezhou University
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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
    • 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
    • B01J20/04—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/043—Carbonates or bicarbonates, e.g. limestone, dolomite, aragonite
    • 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
    • C02F1/288—Treatment of water, waste water, or sewage by sorption using composite sorbents, e.g. coated, impregnated, multi-layered
    • 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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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

The invention relates to a preparation method of a calcium carbonate-based chelate sorbent. The method comprises the following steps: firstly, adding water to modified starch according to the solid-to-liquid ratio of 1:1, so as to disperse the modified starch to be uniform, heating and stirring, and performing gelatinization for 2 minutes at 95 DEG C; secondly, adding the gelatinated modified starch, a coupling agent and calcium carbonate powder into a reaction container according to the ratio of (20-40):0.5:100, stirring and mixing for 30-50 minutes at 40-60 DEG C, so as to obtain the calcium carbonate-based chelate sorbent, wherein the calcium carbonate powder adopts 400-1500-mesh heavy calcium carbonate powder. The preparation method has the advantages of wide material source and simple technology, in addition, the adsorption rate of the calcium carbonate-based chelate sorbent to heavy metal reaches more than 98 percent, the additional value of heavy calcium carbonate is increased, and the method has good promition and application value.

Description

The preparation method of a kind of calcium carbonate-base chelate sorbent
Technical field
Patent of the present invention belongs to the surface treatment method technical field of non-metallic minerals, and that be specifically related to is the preparation method of a kind of calcium carbonate-base chelate sorbent.
Background technology
Heavy metal is the pollutent of a class harm especially severe, and along with the fast development of industry, mining industry, the heavy metal pollution problem in environment is on the rise, and contaminated area increases, and degree is also constantly deepened. Ecotope is not only caused great destruction by a large amount of accumulations of heavy metal, more seriously enter the heavy metal after environment to be easy to participate in food chain circulation also finally at people's cylinder accumulation, destroy normal physiological Metabolic activity, cause somatocyte canceration, seriously being detrimental to health, therefore heavy metal more and more receives the concern of people to the problem that the discharge of nature rolls up.
Water-ground limestone powder surface is distributed with some amount hydroxyl because of hydrolytic action, there is relatively strongly hydrophilic, particle surface electrostatic interaction, the features such as surface energy is higher, just because of the surface texture featur that this kind special, it is possible to by surface grafting, the mode such as coated, change water-ground limestone surface functional groups, enrich surface functional group kind, thus change the surface properties of particulate, give the New function feature of its metal ion chelation agent. By retrieval, although the patent about water-ground limestone has much, but also not about the technical scheme utilizing modified starch surface modified ground calcium carbonate to prepare calcium carbonate-base chelate sorbent.
Summary of the invention
It is an object of the invention to for the deficiencies in the prior art, and propose the preparation method of a kind of calcium carbonate-base chelate sorbent.
The present invention solves its technical problem and takes following technical scheme to realize:
A preparation method for calcium carbonate-base chelate sorbent, it is as follows that the method comprising the steps of:
(1) according to solid-to-liquid ratio 1:1, modified starch is added water and is uniformly dispersed, heat and stir, gelatinization 2 minutes at 95 DEG C;
(2) modified starch good for gelatinization, coupling agent, calcium carbonate powders are joined in reaction vessel according to mass ratio 20-40:0.5:100, at 40-60 DEG C, it is uniformly mixed 30-50 minute, calcium carbonate-base chelate sorbent can be prepared.
And, described modified starch is carboxymethyl starch, positively charged ion etherification starch, any one in phosphate ester starch.
And, described coupling agent is aluminate coupling agent, any one in aluminium titanium composite coupler.
And, described calcium carbonate powders is 400 order-1500 order water-ground limestone powder.
Advantage and the positively effect of the present invention be:
1, the present invention has raw material sources extensively, the simple advantage of technique, and the adsorption rate of calcium carbonate-base chelate sorbent heavy metal reaches more than 98%.
2, the inventive method can effectively improve heavy metal adsorption rate, increases the added value of water-ground limestone, has and good promotes the use of value.
Embodiment
Hereinafter the embodiment of the present invention is further described: it is emphasized that; embodiment of the present invention is explanation property; instead of it is limited; therefore the present invention is not limited to the embodiment described in embodiment; every other enforcement mode drawn according to the technical scheme of the present invention by those skilled in the art, belongs to the scope of protection of the invention equally.
A preparation method for calcium carbonate-base chelate sorbent, it is as follows that the method comprising the steps of:
(1) according to solid-to-liquid ratio 1:1, modified starch is added water and is uniformly dispersed, heat and stir, gelatinization 2 minutes at 95 DEG C;
(2) modified starch good for gelatinization, coupling agent, calcium carbonate powders are joined in reaction vessel according to mass ratio 20-40:0.5:100, at 40-60 DEG C, it is uniformly mixed 30-50 minute, calcium carbonate-base chelate sorbent can be prepared.
In specific embodiment of the invention, described modified starch is carboxymethyl starch, positively charged ion etherification starch, any one in phosphate ester starch.
In specific embodiment of the invention, described coupling agent is aluminate coupling agent, any one in aluminium titanium composite coupler.
In specific embodiment of the invention, described calcium carbonate powders is 400 order-1500 order water-ground limestone powder.
What be used for by the calcium carbonate-base chelate sorbent of above-mentioned preparation in waste water is heavy metal ion adsorbed.
Embodiment 1
(1) according to solid-to-liquid ratio 1:1, modified starch is added water and is uniformly dispersed, heat and stir, gelatinization 2 minutes at 95 DEG C;
(2) modified starch good for gelatinization, coupling agent, calcium carbonate powders are joined in reaction vessel according to mass ratio 25:0.5:100, at 50 DEG C, it is uniformly mixed 40 minutes, calcium carbonate-base chelate sorbent can be prepared.
Above-mentioned modified starch is carboxymethyl starch,
Above-mentioned coupling agent is aluminate coupling agent,
Above-mentioned calcium carbonate powders is 600 order water-ground limestone powder.
Get the simulation copper-containing wastewater that 100mL concentration is 100mg/L, add embodiment 1 and prepare the calcium carbonate-base chelate sorbent finished product 2g, after stirring 50min, filter, filtrate measures copper ion concentration with atomic absorption spectrophotometer, and can calculate copper absorption rate is 99.24%.
Get the simulation cadmium wastewater that 100mL concentration is 100mg/L, add embodiment 1 and prepare the calcium carbonate-base chelate sorbent finished product 2g, after stirring 50min, filter, filtrate measures concentration of cadmium ions with atomic absorption spectrophotometer, and can calculate cadmium sorption rate is 99.68%.
Embodiment 2
(1) according to solid-to-liquid ratio 1:1, modified starch is added water and is uniformly dispersed, heat and stir, gelatinization 2 minutes at 95 DEG C;
(2) modified starch good for gelatinization, coupling agent, calcium carbonate powders are joined in reaction vessel according to mass ratio 20:0.5:100, at 50 DEG C, it is uniformly mixed 30 minutes, calcium carbonate-base chelate sorbent can be prepared.
Above-mentioned modified starch is positively charged ion etherification starch,
Above-mentioned coupling agent is aluminate coupling agent,
Above-mentioned calcium carbonate powders is 400 order water-ground limestone powder.
Get the simulation copper-containing wastewater that 100mL concentration is 100mg/L, add embodiment 2 and prepare the calcium carbonate-base chelate sorbent finished product 2g, after stirring 50min, filter, filtrate measures copper ion concentration with atomic absorption spectrophotometer, and can calculate copper absorption rate is 98.12%.
Get the simulation cadmium wastewater that 100mL concentration is 100mg/L, add embodiment 2 and prepare the calcium carbonate-base chelate sorbent finished product 2g, after stirring 50min, filter, filtrate measures concentration of cadmium ions with atomic absorption spectrophotometer, and can calculate cadmium sorption rate is 98.38%.
Embodiment 3
(1) according to solid-to-liquid ratio 1:1, modified starch is added water and is uniformly dispersed, heat and stir, gelatinization 2 minutes at 95 DEG C;
(2) modified starch good for gelatinization, coupling agent, calcium carbonate powders are joined in reaction vessel according to mass ratio 40:0.5:100, at 70 DEG C, it is uniformly mixed 60 minutes, calcium carbonate-base chelate sorbent can be prepared.
Above-mentioned modified starch is carboxymethyl starch,
Above-mentioned coupling agent is aluminium titanium composite coupler,
Above-mentioned calcium carbonate powders is 1250 order water-ground limestone powder.
Get the simulation copper-containing wastewater that 100mL concentration is 100mg/L, add embodiment 3 and prepare the calcium carbonate-base chelate sorbent finished product 2g, after stirring 50min, filter, filtrate measures copper ion concentration with atomic absorption spectrophotometer, and can calculate copper absorption rate is 98.85%.
Get the simulation cadmium wastewater that 100mL concentration is 100mg/L, add embodiment 3 and prepare the calcium carbonate-base chelate sorbent finished product 2g, after stirring 50min, filter, filtrate measures concentration of cadmium ions with atomic absorption spectrophotometer, and can calculate cadmium sorption rate is 99.07%.
Embodiment 4
(1) according to solid-to-liquid ratio 1:1, modified starch is added water and is uniformly dispersed, heat and stir, gelatinization 2 minutes at 95 DEG C;
(2) modified starch good for gelatinization, coupling agent, calcium carbonate powders are joined in reaction vessel according to mass ratio 25:0.5:100, at 70 DEG C, it is uniformly mixed 60 minutes, calcium carbonate-base chelate sorbent can be prepared.
Above-mentioned modified starch is positively charged ion etherification starch,
Above-mentioned coupling agent is aluminium titanium composite coupler,
Above-mentioned calcium carbonate powders is 1500 order water-ground limestone powder.
Get the simulation copper-containing wastewater that 100mL concentration is 100mg/L, add embodiment 4 and prepare the calcium carbonate-base chelate sorbent finished product 2g, after stirring 50min, filter, filtrate measures copper ion concentration with atomic absorption spectrophotometer, and can calculate copper absorption rate is 98.46%.
Get the simulation cadmium wastewater that 100mL concentration is 100mg/L, add embodiment 4 and prepare the calcium carbonate-base chelate sorbent finished product 2g, after stirring 50min, filter, filtrate measures concentration of cadmium ions with atomic absorption spectrophotometer, and can calculate cadmium sorption rate is 98.66%.

Claims (4)

1. the preparation method of a calcium carbonate-base chelate sorbent, it is characterised in that: it is as follows that the method comprising the steps of:
(1) according to solid-to-liquid ratio 1:1, modified starch is added water and is uniformly dispersed, heat and stir, gelatinization 2 minutes at 95 DEG C;
(2) modified starch good for gelatinization, coupling agent, calcium carbonate powders are joined in reaction vessel according to mass ratio 20-40:0.5:100, at 40-60 DEG C, it is uniformly mixed 30-50 minute, prepare calcium carbonate-base chelate sorbent.
2. the preparation method of calcium carbonate-base chelate sorbent according to claim 1, it is characterised in that: described modified starch is carboxymethyl starch, positively charged ion etherification starch, any one in phosphate ester starch.
3. the preparation method of calcium carbonate-base chelate sorbent according to claim 1, it is characterised in that: described coupling agent is aluminate coupling agent, any one in aluminium titanium composite coupler.
4. the preparation method of calcium carbonate-base chelate sorbent according to claim 1, it is characterised in that: described calcium carbonate powders is 400 order-1500 order water-ground limestone powder.
CN201610183803.4A 2016-03-28 2016-03-28 A kind of preparation method of calcium carbonate-base chelate sorbent Active CN105618004B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108855006A (en) * 2018-07-04 2018-11-23 合肥帧讯低温科技有限公司 A kind of heavy metal absorbent
CN109054076A (en) * 2018-09-10 2018-12-21 齐鲁工业大学 The preparation method and products obtained therefrom of a kind of three-dimensional porous modified starch and application
CN110052237A (en) * 2019-04-19 2019-07-26 贺州学院 A kind of preparation method of porous powdered whiting adsorbent material
CN110372061A (en) * 2019-07-03 2019-10-25 合山市春旭环保科技有限责任公司 A kind of composite water treatment medicament and preparation method thereof for industrial waste acid processing
US11369943B2 (en) 2019-12-10 2022-06-28 Qilu University Of Technology Starch-based carbon composite and use thereof in selective and efficient adsorption of mercury ion and methylene blue

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108855006A (en) * 2018-07-04 2018-11-23 合肥帧讯低温科技有限公司 A kind of heavy metal absorbent
CN109054076A (en) * 2018-09-10 2018-12-21 齐鲁工业大学 The preparation method and products obtained therefrom of a kind of three-dimensional porous modified starch and application
CN109054076B (en) * 2018-09-10 2021-01-22 齐鲁工业大学 Preparation method of three-dimensional porous modified starch, obtained product and application
CN110052237A (en) * 2019-04-19 2019-07-26 贺州学院 A kind of preparation method of porous powdered whiting adsorbent material
CN110372061A (en) * 2019-07-03 2019-10-25 合山市春旭环保科技有限责任公司 A kind of composite water treatment medicament and preparation method thereof for industrial waste acid processing
CN110372061B (en) * 2019-07-03 2022-07-19 合山市春旭环保科技有限责任公司 Composite water treatment agent for industrial waste acid treatment and preparation method thereof
US11369943B2 (en) 2019-12-10 2022-06-28 Qilu University Of Technology Starch-based carbon composite and use thereof in selective and efficient adsorption of mercury ion and methylene blue

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Address after: 542612 Daliantang Base, Gong'an Town, Zhongshan County, Hezhou City, Guangxi Zhuang Autonomous Region (formerly Gong'an Brick Factory)

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