CN1373001A - Process for preparing seaweed-type heavy metal ion adsorbent - Google Patents
Process for preparing seaweed-type heavy metal ion adsorbent Download PDFInfo
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- CN1373001A CN1373001A CN 01109280 CN01109280A CN1373001A CN 1373001 A CN1373001 A CN 1373001A CN 01109280 CN01109280 CN 01109280 CN 01109280 A CN01109280 A CN 01109280A CN 1373001 A CN1373001 A CN 1373001A
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- heavy metal
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- metal ion
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Abstract
A seaweed-type heavy metal ion adsorbent is prepared from kelp through drying, crushing, soaking and activating and chemically stabilizing. Its advantages are high adsorption capacity, high anti-interference and regenerating power, high strength and low energy consumption.
Description
The invention belongs to the preparation of adsorbent method, the preparation method of seaweed-type heavy metal ion adsorbent especially is applicable to the preparation occasion of seaweed-type heavy metal ion adsorbent.
Before the present invention made, the processing method of the heavy metal wastewater thereby of prior art mainly was divided into traditional method and biosorption process two big classes.The processing method of traditional heavy metal wastewater thereby mainly contains the precipitation method, oxidation-reduction method, the way of distillation, ion-exchange, electrochemical treatments method, membrane separation process etc., when the most outstanding shortcoming of tradition method was to handle low concentration heavy metal water, technology was loaded down with trivial details, the energy consumptive material consumes and operating cost is higher.Bioanalysis is to utilize that biomaterial (as bacterium, fungi etc.) is treated to be processed into a kind of new processing method that biological adsorption agent is handled heavy metal-containing waste water.The key of biological adsorption technology application success depends on a series of physical and chemical performances of biological adsorption agent,, antijamming capability big as aboundresources, adsorption capacity and performances such as power of regeneration is strong, mechanical strength height.Existing biological adsorption agent and preparation method still can not satisfy the requirement of above-mentioned physical and chemical performance.
Task of the present invention is the shortcoming that overcomes prior art, provides that a kind of preparation technology is simple, adsorption capacity is big, the preparation method of antijamming capability and the seaweed-type heavy metal ion adsorbent that power of regeneration is strong, mechanical strength is high.
The preparation method of seaweed-type heavy metal ion adsorbent, it is characterized in that selecting for use the ocean bulk kelp kelp with high absorption property is raw material, be crushed to 0.6～2.0 millimeter particle after drying, with a kind of inorganic magnesium salt solution soaking and stirring processing of 0.01～0.5 molar concentration after 0.5～10 hour, the adsorbent intermediate that has been activated with the inorganic magnesium salt of deionized water flush away free state again, with a kind of aldehydes organic reagent the adsorbent intermediate that has activated being carried out chemical stabilization then handles, treatment temperature is 20～100 ℃, processing time is 1～15 hour, the adsorbent intermediate that chemical stabilization is handled carries out thermostabilization in temperature is 100～250 ℃ scope handled 5～48 hours, finally obtained seaweed-type heavy metal ion adsorbent.
The present invention compared with prior art, preparation technology's advantages of simple, heavy metal ion adsorbed capacity is big, antijamming capability and power of regeneration are strong, the mechanical strength height, energy consumption is low, has bigger practical value and economic results in society.
Embodiment 1:
Select natural marine bulk kelp kelp for use, particle with marine alga crushed after being dried to 1.0 millimeter, with the magnesium nitrate solution soaking and stirring processing of 0.01 molar concentration 0.5 hour, again with after the rinsed with deionized water, the adsorbent intermediate that has promptly been activated, with acetaldehyde the adsorbent intermediate that has activated being carried out chemical stabilization then handles, treatment temperature is that 30 ℃ of processing times are 2 hours, the adsorbent intermediate of chemical stabilization processing carries out thermostabilization processing 8 hours in temperature under 130 ℃ again, finally obtains seaweed-type heavy metal ion adsorbent.
Embodiment 2:
Select natural marine bulk kelp kelp for use, particle with marine alga crushed after being dried to 0.6 millimeter, with the magnesium chloride solution soaking and stirring processing of 0.1 molar concentration 4 hours, again with after the rinsed with deionized water, the adsorbent intermediate that has promptly been activated, with furfural the adsorbent intermediate that has activated being carried out chemical stabilization then handles, treatment temperature is 60 ℃, processing time is 5 hours, the adsorbent intermediate of chemical stabilization processing carries out thermostabilization processing 24 hours in temperature under 180 ℃ again, finally obtains seaweed-type heavy metal ion adsorbent.
Embodiment 3:
Select natural marine bulk kelp kelp for use, particle with marine alga crushed after being dried to 2.0 millimeter, with the Adlerika soaking and stirring processing of 0.4 molar concentration 8 hours, again with after the rinsed with deionized water, the adsorbent intermediate that has promptly been activated, with furfural the adsorbent intermediate that has activated being carried out chemical stabilization then handles, treatment temperature is 90 ℃, processing time is 10 hours, the adsorbent intermediate of chemical stabilization processing carries out thermostabilization processing 40 hours in temperature under 220 ℃ again, finally obtains seaweed-type heavy metal ion adsorbent.
Embodiment 4:
This seaweed-type heavy metal ion adsorbent is applied to the purification of heavy metal wastewater thereby, and in performance and technically shown very big superiority and competitiveness, the feature of handling heavy metal wastewater thereby with conventional art is more as shown in the table:
The feature that seaweed-type heavy metal ion adsorbent and conventional art are used for the heavy metal wastewater thereby purification compares
This adsorbent precipitating ion exchange activity charcoal adsorbed film separate the good good job adsorbent of evaporation adsorption capacity cost good job still can differ from the good effluent quality of the good good job of change in concentration good job＜1 2～5＜1 differ from 1～5 1～5 pH accommodation still can differ from the poor applicable ion range good job of the poor purification efficiency good job of the fine selective good job good job of Shang Keshangkeshang good job carefully anti-organic matter disturbed the good regenerability good job of good job good job one's likes or preferences can poor anti impulsion load still but the poor running cost economy good job of good job still can still can be poor
As can be seen from the table, this seaweed-type heavy metal ion adsorbent is applied to administer the heavy metal pollution aspect Have obvious advantage, be in particular in that (1) has higher adsorption capacity to most of heavy metal ion; (2) Be subjected to the interference effect of the light metal ions such as potassium in the aqueous solution, sodium, calcium, magnesium littler; (3) the adsorbent cost of manufacture is cheap, Technology is simple and treatment effeciency is high, and operating cost is low; (4) pH value and temperature accommodation are wide; (4) can effectively return Receive precious metal; (5) can substitute widely expensive ion exchange resin. Therefore utilize seaweed-type heavy metal Ion adsorbent is processed heavy metal wastewater thereby, has broad application prospects and preferably environmental benefit, social benefit.
Claims (1)
1, the preparation method of seaweed-type heavy metal ion adsorbent, it is characterized in that selecting for use the ocean bulk kelp kelp with high absorption property is raw material, be crushed to 0.6～2.0 millimeter particle after drying, with a kind of inorganic magnesium salt solution soaking and stirring processing of 0.01～0.5 molar concentration after 0.5～10 hour, the adsorbent intermediate that has been activated with the inorganic magnesium salt of deionized water flush away free state again, with a kind of aldehydes organic reagent the adsorbent intermediate that has activated being carried out chemical stabilization then handles, treatment temperature is 20～100 ℃, processing time is 1～15 hour, the adsorbent intermediate that chemical stabilization is handled carries out thermostabilization in temperature is 100～250 ℃ scope handled 5～48 hours, finally obtained seaweed-type heavy metal ion adsorbent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011092807A CN1136041C (en) | 2001-03-02 | 2001-03-02 | Process for preparing seaweed-type heavy metal ion adsorbent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011092807A CN1136041C (en) | 2001-03-02 | 2001-03-02 | Process for preparing seaweed-type heavy metal ion adsorbent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1373001A true CN1373001A (en) | 2002-10-09 |
| CN1136041C CN1136041C (en) | 2004-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011092807A Expired - Fee Related CN1136041C (en) | 2001-03-02 | 2001-03-02 | Process for preparing seaweed-type heavy metal ion adsorbent |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325387C (en) * | 2005-01-28 | 2007-07-11 | 湖南大学 | Method for adsorbing cndmium-contained inindustrial waste water using mushroom culture medium waste material |
| CN100355665C (en) * | 2005-01-28 | 2007-12-19 | 湖南大学 | Method of adsorbing lead-contained in industial wste water using mushroom culture medium waste material |
| CN100355664C (en) * | 2005-01-28 | 2007-12-19 | 湖南大学 | Method for adsorbing chromium-contained in industrial waste water using mushroom culture medium waste material |
| WO2009016381A2 (en) * | 2007-08-02 | 2009-02-05 | The Forestry Commission | Charcoals |
| CN100548470C (en) * | 2007-11-12 | 2009-10-14 | 青岛明月海藻集团有限公司 | Preparation method and application of biological adsorption material consisting of seaweed plants and chitosan |
| CN102500334A (en) * | 2011-11-07 | 2012-06-20 | 广东轻工职业技术学院 | Ammonium thiocyanate modified seaweed biotype absorbent and preparation method and application thereof |
| CN105883956A (en) * | 2014-09-29 | 2016-08-24 | 广西科学院 | Method for removing heavy metal in water by using dried sargasso |
-
2001
- 2001-03-02 CN CNB011092807A patent/CN1136041C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1325387C (en) * | 2005-01-28 | 2007-07-11 | 湖南大学 | Method for adsorbing cndmium-contained inindustrial waste water using mushroom culture medium waste material |
| CN100355665C (en) * | 2005-01-28 | 2007-12-19 | 湖南大学 | Method of adsorbing lead-contained in industial wste water using mushroom culture medium waste material |
| CN100355664C (en) * | 2005-01-28 | 2007-12-19 | 湖南大学 | Method for adsorbing chromium-contained in industrial waste water using mushroom culture medium waste material |
| WO2009016381A2 (en) * | 2007-08-02 | 2009-02-05 | The Forestry Commission | Charcoals |
| WO2009016381A3 (en) * | 2007-08-02 | 2009-06-18 | Forestry Commission | Charcoals |
| GB2451509B (en) * | 2007-08-02 | 2012-03-14 | Forestry Commission | Charcoals |
| AU2008281561B2 (en) * | 2007-08-02 | 2013-10-17 | DTI Holding B.V. | Charcoals |
| CN100548470C (en) * | 2007-11-12 | 2009-10-14 | 青岛明月海藻集团有限公司 | Preparation method and application of biological adsorption material consisting of seaweed plants and chitosan |
| CN102500334A (en) * | 2011-11-07 | 2012-06-20 | 广东轻工职业技术学院 | Ammonium thiocyanate modified seaweed biotype absorbent and preparation method and application thereof |
| CN105883956A (en) * | 2014-09-29 | 2016-08-24 | 广西科学院 | Method for removing heavy metal in water by using dried sargasso |
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| Publication number | Publication date |
|---|---|
| CN1136041C (en) | 2004-01-28 |
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