CN104888705A - Preparation method of magnetic ferric oxide/bagasse active carbon - Google Patents
Preparation method of magnetic ferric oxide/bagasse active carbon Download PDFInfo
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Abstract
The invention discloses a preparation method of magnetic ferric oxide/bagasse active carbon. The preparation method comprises the following steps: adding 10-60g of bagasse into 1000mL of 0.05-0.5mol/L ferrous sulfate, stirring at constant speed, carrying out ultrasonic oscillation for 30-60 minutes, and standing for 24-48 hours; slowly adding an ammonia water solution with the volume ratio being 1%-10% by using a full-automatic titrator to adjust the pH value to 8.0-8.5, heating to 85 DEG C by using a microwave oven, filtering, washing with ultrapure water, enabling the pH value of a washing liquid to 7.0, putting a filter cake in a beaker containing 200mL of analytical absolute alcohol, putting the beaker in an ultrasonic instrument for carrying out ultrasonic oscillation for 30 minutes and filtering; drying for 16-24 hours at the temperature of 105-110 DEG C to obtain bagasse/ferric hydroxide and ferrous hydroxide mixture; and carrying out carbonization at the temperature of 450-550 DEG C, cooling, grinding, and sieving by a 100-mesh sieve to obtain a magnetic ferric oxide/bagasse active carbon compound absorbent. The preparation method disclosed by the invention is simple in process and low in cost; and a prepared product can be widely applied in the procedure for deeply treating arsenic-containing waste water of industrial and mining enterprises.
Description
Technical field
The preparation method, particularly one that the present invention relates to a kind of magnetic oxide/bagasse active carbon utilize bagasse for main material, be modifier, prepare the method for magnetic oxide/bagasse active carbon with ferrous sulfate.
Background technology
Arsenic is present in a kind of metalloid element harmful in natural environment, by affecting the growth of crops and entering human body by food chain and work the mischief to human health.Toxicologic result of study shows, arsenic in vivo can with part specific albumen generation affinity interaction, generate arsenic protein conjugates.Arsenic enters human body by approach such as breathing and diet, causes skin, digestion, nerve, breathing and immune system to be damaged to some extent.When the method for pre-treatment arsenic-containing waste water mainly contains chemical precipitation method, electrocoagulation, absorption method, membrane separation process etc.Chemical precipitation method can produce the precipitation containing heavy arsenic, and improve processing cost, the recovery of arsenic also has certain difficulty, and the processing cost of electrocoagulation and membrane separation process is also higher.In recent years, absorption method is removed arsenic as a research direction by Many researchers.Conventional adsorbent has: active carbon, FeOOH, goethite, titanium dioxide and activated alumina etc., and this type of adsorbent mostly is Powdered, although specific area is large, but adsorbance is still lower.
Have amount of literature data to show, the removal effect of magnetic oxide to arsenic is remarkable.Bagasse active carbon is a kind of adsorbent of function admirable, but it is limited to the adsorption effect of arsenic.Therefore, how the adsorbent that two kinds have good adsorbent performance being organically combined, make its absorption property reach the effect of learning from other's strong points to offset one's weaknesses, is a hot issue of research at present.Therefore, being primary raw material with bagasse, take ferrous sulfate as modifier, prepares magnetic oxide/bagasse active carbon and has development prospect advantageously and Practical significance.
Summary of the invention
Object of the present invention is just to provide one and adopts coprecipitation and calcination method at ambient pressure, and being primary raw material with bagasse, take ferrous sulfate as auxiliary material, prepares magnetic oxide/bagasse active carbon.
At present, study in the sorbing material of more absorption arsenic removal, single material has modified active carbon fiber, aluminium oxide, titanium dioxide etc.; The material of compound has a year iron active carbon, ferro manganese composite oxides, carries aluminium porous zeolite etc.The main component of the sorbing material had in these sorbing materials is iron, aluminium, Mn oxide, and they are main matter of Adsorption arsenic, and the main component in partial adsorbates material is some organic substances such as active carbon.Low in order to overcome existing arsenic-removing adsorption agent adsorption capacity, limited sorption capacity, and make full use of the abundant bagasse resource in Guangxi.The invention provides a kind of arsenic removal (V) sorbing material---the preparation method of magnetic oxide/bagasse active carbon.Magnetic oxide/bagasse active carbon is good to the adsorption effect of arsenic (V), and when being respectively lower than 2.0 mg/L containing arsenic (V) water sample initial concentration, adsorption temp is 25 DEG C, after adsorption equilibrium in water sample arsenic (V) concentration lower than 0.01 mg/L.
Concrete steps are:
(1) bagasse of abundant sweetening off is placed in baking oven to dry at 85 DEG C, after pulverizing with omnipotent disintegrating machine, crosses 20 mesh standard sieves for subsequent use.
(2) in the wide-mouth reagent bottle of 2L band frosted mouth, the copperas solution that 1000 mL concentration are 0.05 mol/L ~ 0.5 mol/L is added, add 10 ~ 60 grams of step (1) gained bagasse, after mechanical uniform stirs, with ultrasonic echography vibration 30 ~ 60 minutes, leave standstill 24 ~ 48 hours.
(3) under machinery at the uniform velocity stirs to step (2) product, with full-automatic titrator slowly add percent by volume be 1% ~ 10% ammonia spirit regulate its pH value to 8.0 ~ 8.5, then by after product microwave-oven-heating to 85 DEG C, filter.
(4) by step (3) gained filter cake, be 7.0 by milli-Q water to washing lotion pH value, then this filter cake is put into 200m L is housed analyzes pure absolute ethyl alcohol beaker, this beaker is placed in ultrasonoscope sonic oscillation 30 minutes, filters.
(5) step (4) products therefrom is placed in porcelain dish at 105 ~ 110 DEG C dry 16 ~ 24 hours, obtains bagasse/iron hydroxide and hydroxide iron mixture.
(6) step (5) gained bagasse/iron hydroxide and hydroxide iron mixture are carbonized at 450 DEG C ~ 550 DEG C, grinding after cooling, crosses 100 mesh sieves, obtains magnetic oxide/bagasse active carbon compound adsorbent.
Present invention process is simple, owing to utilizing bagasse for main raw material(s), greatly reduces production cost, and improves product property indices; Obtained product can be widely used in industrial and mining enterprises' advanced treating containing arsenic (V) waste water operation.
Accompanying drawing explanation
Fig. 1 is the scanning electron microscope (SEM) photograph of magnetic oxide/bagasse active carbon compound adsorbent that the embodiment of the present invention obtains.
Detailed description of the invention
Embodiment:
(1) bagasse of abundant sweetening off is placed in baking oven to dry at 85 DEG C, after pulverizing with omnipotent disintegrating machine, crosses 20 mesh standard sieves for subsequent use.
(2) be with the wide-mouth reagent bottle of frosted mouth to add the copperas solution that 1000 mL concentration are 0.10 mol/L in 2L, add 50 grams of step (1) gained bagasse, mechanical uniform vibrates 30 minutes with ultrasonic echography after stirring, and leaves standstill 48 hours.
(3) under machinery at the uniform velocity stirs to step (2) product, with full-automatic titrator slowly add percent by volume be 10% ammonia spirit regulate its pH value to 8.5, by product microwave-oven-heating to 85 DEG C, filter.
(4) by step (3) gained filter cake, be 7.0 by milli-Q water to washing lotion pH value, then this filter cake is put into 200mL is housed analyzes pure absolute ethyl alcohol beaker, this beaker is placed in ultrasonoscope sonic oscillation 30 minutes, filters.
(5) step (4) products therefrom is placed in porcelain dish at 110 DEG C dry 24 hours, obtains bagasse/iron hydroxide and hydroxide iron mixture.
(6) step (5) gained bagasse/iron hydroxide and hydroxide iron mixture are carbonized at 450 DEG C, grinding after cooling, crosses 100 mesh sieves, obtains magnetic oxide/bagasse active carbon compound adsorbent.
The thing phase of obtained magnetic oxide/bagasse active carbon with structure, become to be grouped into, adopt German Bruker-axs D8ADVANCE type X-ray diffractometer to test, angle of diffraction scope 2 θ=10-90 °, diffraction speed 4 °/minute.The pattern of sample and particle diameter adopt ESEM to observe.Adopt Japanese high and new technology company/England Oxford company S-4800 field emission scanning electron microscope, amplification 5000-20000 doubly carries out morphology observation and sees Fig. 1.
Claims (1)
1. a preparation method for magnetic oxide/bagasse active carbon, is characterized in that concrete steps are:
(1) bagasse of abundant sweetening off is placed in baking oven to dry at 85 DEG C, after pulverizing with omnipotent disintegrating machine, crosses 20 mesh standard sieves for subsequent use;
(2) in the wide-mouth reagent bottle of 2L band frosted mouth, the copperas solution that 1000 mL concentration are 0.05 mol/L ~ 0.5 mol/L is added, add 10 ~ 60 grams of step (1) gained bagasse, after mechanical uniform stirs, with ultrasonic echography vibration 30 ~ 60 minutes, leave standstill 24 ~ 48 hours;
(3) under machinery at the uniform velocity stirs to step (2) product, with full-automatic titrator slowly add percent by volume be 1% ~ 10% ammonia spirit regulate its pH value to 8.0 ~ 8.5, then by after product microwave-oven-heating to 85 DEG C, filter;
(4) by step (3) gained filter cake, be 7.0 by milli-Q water to washing lotion pH value, then this filter cake is put into 200m L is housed analyzes pure absolute ethyl alcohol beaker, this beaker is placed in ultrasonoscope sonic oscillation 30 minutes, filters;
(5) step (4) products therefrom is placed in porcelain dish at 105 ~ 110 DEG C dry 16 ~ 24 hours, obtains bagasse/iron hydroxide and hydroxide iron mixture;
(6) step (5) gained bagasse/iron hydroxide and hydroxide iron mixture are carbonized at 450 DEG C ~ 550 DEG C, grinding after cooling, crosses 100 mesh sieves, obtains magnetic oxide/bagasse active carbon compound adsorbent.
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Cited By (8)
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| CN107983306A (en) * | 2017-11-30 | 2018-05-04 | 华南理工大学 | A kind of activated carbon-carried nano iron oxide adsorbent and preparation method thereof |
| CN108435147A (en) * | 2018-05-16 | 2018-08-24 | 武汉霖泉环保科技有限公司 | A kind of preparation method of magnetic material |
| CN109847698A (en) * | 2019-02-02 | 2019-06-07 | 桂林理工大学 | A kind of preparation method of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent |
| CN109896574A (en) * | 2018-09-30 | 2019-06-18 | 福建省农业科学院农业工程技术研究所 | A kind of carbon ferrite-titanium oxide Multifunctional water purification material and preparation method thereof |
| CN109894076A (en) * | 2018-08-28 | 2019-06-18 | 福建省农业科学院农业工程技术研究所 | A kind of porous rich defect carbon ferrite and preparation method thereof adsorbing light degradation breeding wastewater organic matter |
| CN112881552A (en) * | 2021-01-14 | 2021-06-01 | 广东省科学院生物工程研究所 | Application of bagasse-based magnetic activated carbon in detection of triazine herbicide in brown sugar |
| CN113526739A (en) * | 2021-08-04 | 2021-10-22 | 浙江欧德利科技有限公司 | Process for removing COD (chemical oxygen demand) and ammonia nitrogen in desulfurization wastewater |
| CN115445573A (en) * | 2022-09-22 | 2022-12-09 | 山东大学 | Iron-aluminum modification method for kitchen waste biochar |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107983306A (en) * | 2017-11-30 | 2018-05-04 | 华南理工大学 | A kind of activated carbon-carried nano iron oxide adsorbent and preparation method thereof |
| CN108435147A (en) * | 2018-05-16 | 2018-08-24 | 武汉霖泉环保科技有限公司 | A kind of preparation method of magnetic material |
| CN109894076A (en) * | 2018-08-28 | 2019-06-18 | 福建省农业科学院农业工程技术研究所 | A kind of porous rich defect carbon ferrite and preparation method thereof adsorbing light degradation breeding wastewater organic matter |
| CN109894076B (en) * | 2018-08-28 | 2021-12-17 | 福建省农业科学院农业工程技术研究所 | Porous defect-rich carbon ferrite for adsorbing light-degraded organic matters in aquaculture wastewater and preparation method thereof |
| CN109896574A (en) * | 2018-09-30 | 2019-06-18 | 福建省农业科学院农业工程技术研究所 | A kind of carbon ferrite-titanium oxide Multifunctional water purification material and preparation method thereof |
| CN109896574B (en) * | 2018-09-30 | 2021-10-22 | 福建省农业科学院农业工程技术研究所 | Carbon ferrite-titanium oxide multifunctional water purification material and preparation method thereof |
| CN109847698A (en) * | 2019-02-02 | 2019-06-07 | 桂林理工大学 | A kind of preparation method of mulberry tree bar biomass carbon/iron and manganese oxides compound adsorbent |
| CN112881552A (en) * | 2021-01-14 | 2021-06-01 | 广东省科学院生物工程研究所 | Application of bagasse-based magnetic activated carbon in detection of triazine herbicide in brown sugar |
| CN113526739A (en) * | 2021-08-04 | 2021-10-22 | 浙江欧德利科技有限公司 | Process for removing COD (chemical oxygen demand) and ammonia nitrogen in desulfurization wastewater |
| CN115445573A (en) * | 2022-09-22 | 2022-12-09 | 山东大学 | Iron-aluminum modification method for kitchen waste biochar |
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