CN104826575A - Preparation method of triclocarban adsorbent purifying agent - Google Patents

Abstract

The invention discloses a preparation method of a triclocarban adsorbent purifying agent. The preparation method comprises the following steps: taking iron nitrate, La2O3, and nitric acid as the main raw materials to prepare LaFeO3; then taking KI and Bi(NO3)3.5H2O as the main raw materials to combine LaFeO3; adjusting the pH by ammonia liquor, fiercely stirring at a room temperature, performing suction filtration, washing the product by water until the product becomes neutral, and drying the product to obtain the triclocarban adsorbent purifying agent. The triclocarban adsorbent purifying agent has the advantages of large adsorption amount and fast adsorption speed, and can be used to process a large amount of wastewater containing triclocarban.

Description

A kind of preparation method of triclocarban absorption purifier

Technical field

The present invention relates to a kind of sorbing material that effectively can purify triclocarban pollutant of preparation, belong to waste water treating agent field.

Background technology

In the environment can to various biology with the main active of the closely-related various Pharmaceuticals and personal care products of people's daily life, especially aquatile produces many adverse effects, to cause the great attention [Lv little Ming of people recently, development fields of environmental monitoring in china, 2012,28(4): 118-123].This series of pollutant is classified as emerging environmental contaminants, and they are subject to increasing attention for the harm of environment, and the research of administering them has a far reaching influence.

Triclocarban (TCC), as antibacterial and disinfectant, widely uses in medicine and personal care articles, and the TCC thus discharged in the environment also increases day by day.It is a kind of typical emerging environmental contaminants, is frequently detected in recent years, cause paying close attention to of home and abroad environment scientific worker in various medium and organism.Along with deepening continuously of studying TCC, TCC presents increasing negative effect, and as a large amount of enrichment in vivo, contaminated soil, water body, make quality of water environment worsen, and threatens the healthy of people.TCC can increase mammalian hormones secretion, and interference breeding, causes mankind's methemoglobinemia; Concentration coefficient in Fish is 3.074, and the concentration coefficient in snail body is 1600, and the concentration coefficient in algae tissue is 1600-2700; Microorganism can be suppressed in sewage disposal system the absorption of glucose, makes dehydrogenase activity reduce 16-20 active unit [Ji Chun etc., Shanxi Agricultural science 2010,38(10): 82-87].

Although existing increasing research shows that TCC is environmentally safe dangerous, the time occurred because of it is not long, to its research of administering also not deeply, and can be less for the method used for reference.Therefore, the effective TCC Treatment process of Development of Novel and material are significant.

Summary of the invention

The object of the present invention is to provide a kind of preparation method that effectively can remove triclocarban absorption purifier in water body.

The present invention takes following means:

(1) with ferric nitrate, La ₂o ₃, nitric acid is main at raw material, with ethylenediamine, glucose for major auxiliary burden, obtains LaFeO by hydro-thermal method 170 DEG C reaction 14h ₃presoma, then 800 DEG C of calcining 2h obtain LaFeO ₃.

(2) with KI, Bi(NO ₃) ₃5H ₂o is primary raw material, the LaFeO synthesized with previous step ₃compound, ingredient proportion ensures LaFeO in last product ₃be 0.01:1 to 0.7:1 with the mass ratio of BiOI.

(3) above mixed liquor ammoniacal liquor regulates pH to be 10, strong stirring 12h under room temperature, suction filtration, is washed to neutrality by deionized water, and 60 DEG C of dry 6h, obtain composite product.

The advantage of product of the present invention is: (1) adsorbance is large.Under room temperature, the maximal absorptive capacity of product to triclocarban reaches 15.6mg/g; (2) adsorption time is short, and under room temperature, product just can reach adsorption equilibrium to triclocarban at about 8 min.The solubility of triclocarban in water is minimum, water-soluble hardly.Based on above feature, this product can be advantageously used in processing fast larger volume containing triclocarban waste water.

Accompanying drawing explanation

Fig. 1 is the adsorption isotherm line chart of the embodiment of the present invention 1 product to triclocarban, meets Langmuir model, and calculating maximal absorptive capacity is 15.6mg/g.

Fig. 2 is the time of equilibrium adsorption figure of the embodiment of the present invention 1 product to triclocarban.

Detailed description of the invention

embodiment 1

Get 28.3g ferric nitrate to be dissolved in 245ml deionized water and to be mixed with solution, for subsequent use.Take La ₂o ₃16.3g, in beaker, then slowly adds the nitric acid of 29.08ml, and pour in the volumetric flask of 100ml after stirring reaction is complete, constant volume obtains La(NO ₃) ₃solution, for subsequent use.Measure the La(NO of 70ml ₃) ₃solution joins in the iron nitrate solution prepared, magnetic agitation, react under room temperature, under agitation slowly add the citric acid of 29.4g, the ethylenediamine of 7ml and the glucose of 33.3g, stirring reaction 8h, then by mixed liquor ultrasonic disperse 20min, dropwise add concentrated ammonia liquor, regulate pH about to 9.3, being diluted to 560ml again proceeds in reactor, 170 DEG C of reaction 14h.Suction filtration, use deionized water, absolute ethanol washing filter cake, filter cake is dry at 100 DEG C, obtains LaFeO after grinding ₃presoma.At 800 DEG C, calcine 2h again, obtain LaFeO ₃product;

The KI of 3.32g is dissolved in the deionized water of 150ml, magnetic agitation, slowly adds 9.7g Bi(NO wherein ₃) ₃5H ₂the LaFeO of O and 0.291g ₃;

Above mixed liquor ammoniacal liquor regulates pH to be 10, strong stirring 12h under room temperature, suction filtration, is washed to neutrality by deionized water, and 60 DEG C of dry 6h, obtain composite product.

embodiment 2

LaFeO ₃preparation with embodiment 1;

The KI of 3.32g is dissolved in the deionized water of 150ml, magnetic agitation, slowly adds 9.7gBi(NO wherein ₃) ₃5H ₂the LaFeO of O and 0.0970g ₃;

Above mixed liquor ammoniacal liquor regulates pH to be 10, strong stirring 12h under room temperature, suction filtration, is washed to neutrality by deionized water, and 60 DEG C of dry 6h, obtain composite product.

embodiment 3

LaFeO ₃preparation with embodiment 1;

Be dissolved in by the KI of 1.7 g in the deionized water of 75 ml, magnetic agitation, slowly adds 4.9gBi(NO wherein ₃) ₃5H ₂the LaFeO of O and 0.24g ₃;

Above mixed liquor ammoniacal liquor regulates pH to be 10, strong stirring 12h under room temperature, suction filtration, is washed to neutrality by deionized water, and 60 DEG C of dry 6h, obtain composite product.

Claims (1)

1. a preparation method for triclocarban absorption purifier, is characterized in that:

(1) with ferric nitrate, La ₂o ₃, nitric acid is main at raw material, with ethylenediamine, glucose for major auxiliary burden, obtains LaFeO by hydro-thermal method 170 DEG C reaction 14h ₃presoma, then 800 DEG C of calcining 2h obtain LaFeO ₃;

(2) with KI, Bi(NO ₃) ₃5H ₂o is primary raw material, the LaFeO synthesized with previous step ₃compound, ingredient proportion ensures LaFeO in last product ₃be 0.01:1 to 0.7:1 with the mass ratio of BiOI;

(3) above mixed liquor ammoniacal liquor regulates pH to be 10, strong stirring 12h under room temperature, suction filtration, is washed to neutrality by deionized water, and 60 DEG C of dry 6h, obtain composite product.