CN106345421A - Process for preparing heavy metal adsorbent through carrot residue modification - Google Patents

Process for preparing heavy metal adsorbent through carrot residue modification Download PDF

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Publication number
CN106345421A
CN106345421A CN201610779754.0A CN201610779754A CN106345421A CN 106345421 A CN106345421 A CN 106345421A CN 201610779754 A CN201610779754 A CN 201610779754A CN 106345421 A CN106345421 A CN 106345421A
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China
Prior art keywords
heavy metal
deionized water
powder
conditions
drying
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Pending
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CN201610779754.0A
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Chinese (zh)
Inventor
熊小芳
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Individual
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Individual
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Priority to CN201610779754.0A priority Critical patent/CN106345421A/en
Publication of CN106345421A publication Critical patent/CN106345421A/en
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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
    • 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
    • C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
    • 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
    • B01J2220/4812—Sorbents characterised by the starting material used for their preparation the starting material being of organic character
    • B01J2220/485—Plants or land vegetals, e.g. cereals, wheat, corn, rice, sphagnum, peat moss
    • 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
    • B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
    • 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)
  • 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 discloses a process for preparing a heavy metal adsorbent through carrot residue modification. The process comprises the following steps: taking a proper amount of carrot residues, cleaning by running water, washing by distilled water, and drying to constant weight; grinding into powder; screening and collecting the powder, adding the powder into deionized water and carrying out a reaction with activated amylase and protease, adding 0.05-0.1mol/L of NaOH solution for reaction, neutralizing by using dilute H2SO4 solution, filtering, airing, mixing with urea, adding a proper amount of deionized water, fully reacting and filtering, and finally, washing by deionized water and drying, so as to obtain the heavy metal adsorbent. The adsorbent preparation method is simple, low in cost and environmentally friendly.

Description

The technique that heavy metal absorbent is prepared in a kind of carrot pomace modification
Technical field
The present invention relates to a kind of heavy metal absorbent, prepare heavy metal absorbent particularly to a kind of carrot pomace modification Technique, belongs to adsorbing material field.
Background technology
Heavy metal pollution is different from the pollution of other organic compound, and many organic compound can pass through nature itself Physics, chemistry or biology purification, makes harmfulness reduce or releases.And source of heavy metal pollution is many decades even hundred Year is all difficult to degrade.Heavy metal pollution is main to be polluted source, after these polluted sources enter environment or ecosystem, can lead to Cross food chain to carry out shifting, accumulate, amplify, thus bringing great harm to our lives.
In recent years concern is caused by the method that heavy metal is removed in organism absorption alive, this method is mainly using super Accumulator plant, algae and microorganism heavy metal have larger absorbability to remove the heavy metal in waste water, but the biology with work Body is limited by the Biomass of organism itself and growth characteristics processing sewage, and therefore such method is also unsuitable for advising greatly so far The application of mould.Modified cellulose class adsorbent is one of important development direction of current cellulose functional high molecule material.Such It is low that adsorbent does not introduce new pollutant, power consumption, so there being important application in water process, and is more easy to than adsorbent resin again Regeneration, and stability is high, and adsorptive selectivity is special, and adsorbent price is far below adsorbent resin.
Abundant cellulose is contained, the hydroxyl on glucose basic ring in cellulose chain can enter in many waste plant slags Plant slag therefore can be had acidity, alkali by the reaction introducing such as esterification, etherificate or chelating by row esterification, enzymology and copolyreaction Property or Chelating Properties group, modification be prepared into a kind of low cost heavy-metal adsorption material, the present invention is former with carrot pomace Material, prepares a kind of heavy metal absorbent by enzymology, esterification modification.
Content of the invention
It is an object of the invention to provide the technique of heavy metal absorbent is prepared in a kind of carrot pomace modification, by following technology Step is realized:
(1) take appropriate carrot pomace, be first carried out with tap water, then with distilled water wash, dry to perseverance under the conditions of 80 DEG C Weight；
(2) by drying object grinds, cross 60 mesh sieves, collect powder；
(3) the powder collected is soaked in deionized water, add the amylase of 0.01-0.05mol/l having activated and albumen Enzyme, reacts 1-2 hour under the conditions of 35-50 DEG C；
(4) add the naoh solution of 0.05-0.1mol/l, react 30-60 minute, then use dilute h2so4Solution neutralizes；
(5) resulting solution will be neutralized filter, then dry, the powder drying be mixed homogeneously by the quality ratio of 1:1 with carbamide, again Soak in deionized water, react 5-10 hour under the conditions of 50 DEG C；
(6) again solution is filtered, deionized water removes the ionic liquid of residual afterwards, after cleaning, under conditions of 50 DEG C, drying is Obtain a kind of heavy metal absorbent.
Preferentially, step (4) in dilute h used2so4The mass fraction of solution is less than 15%.
Preferentially, step (5) in, drying is by the way of naturally drying.
The present invention has following advantages and characteristic；
(1), compared with prior art, by the way of enzymatic degradation, starch in plant slag and protein are digested, again simultaneously Do not destroy other compositions, process is simply efficient；
(2) this adsorbing material manufacture method is simple, with low cost, environmental friendliness.
Specific embodiment
Embodiment one:
Take appropriate carrot pomace, be first carried out with tap water, then with distilled water wash, dry to constant weight under the conditions of 80 DEG C, By drying object grinds, cross 60 mesh sieves, collect powder, weigh gained powder 50g and soak in deionized water, addition has activated 0.01mol/l amylase solution and each 2ml of protein enzyme solution, react 1 hour under the conditions of 35-50 DEG C, are subsequently adding 10ml's 0.05mol/l naoh solution, reacts 50 minutes, then uses h2so4Solution neutralizes, and neutralization gained liquid is filtered, then dries；To dry in the air Dry powder and carbamide soak in deionized water by the quality of 1:1 than after mixing homogeneously again, and under the conditions of 50 DEG C, reaction 6 is little When, filter, after deionized water cleans up afterwards, put into drying one heavy metal species in 50 DEG C of Constant Temp. Oven Adsorbent.
Embodiment two:
Take appropriate carrot pomace, be first carried out with tap water, then with distilled water wash, dry to constant weight under the conditions of 80 DEG C, By drying object grinds, cross 60 mesh sieves, collect powder, weigh gained powder 50g and soak in deionized water, addition has activated 0.05mol/l amylase solution and each 2ml of protein enzyme solution, react 2 hours under the conditions of 35-50 DEG C, are subsequently adding 10ml's 0.1mol/l naoh solution, reacts 50 minutes, then uses h2so4Solution neutralizes.Neutralization gained liquid is filtered, then dries；To dry in the air Dry powder and carbamide soak in deionized water by the quality of 1:1 than after mixing homogeneously again, and under the conditions of 50 DEG C, reaction 8 is little When, filter, after deionized water cleans up afterwards, put into drying one heavy metal species in 50 DEG C of Constant Temp. Oven Adsorbent.
Embodiment three:
Take appropriate carrot pomace, be first carried out with tap water, then with distilled water wash, dry to constant weight under the conditions of 80 DEG C, By drying object grinds, cross 60 mesh sieves, collect powder, add appropriate amount of deionized water, add the 0.05mol/l amylase having activated Solution and each 2ml of protein enzyme solution, react 2 hours under the conditions of 50 DEG C, are subsequently adding the 0.1mol/l naoh solution of 5l, instead Answer 1 hour, then use h2so4Solution neutralizes, and will neutralize gained liquid sheet frame compressor and filter, then dry；By the powder drying with Carbamide by 1:1 quality than again squeezing into after mix homogeneously in 3 tons of sanitary cans, and inject deionized water, be maintained at 50 DEG C of conditions Lower reaction 8 hours, filters, and after deionized water cleans up afterwards at a temperature of 50 DEG C, an a kind of drying huge sum of money is dried Belong to adsorbent.

Claims (3)

1. a kind of heavy metal absorbent is it is characterised in that the preparation method of this heavy metal absorbent sequentially includes the following steps:
(1) take appropriate carrot pomace, be first carried out with tap water, then with distilled water wash, dry to perseverance under the conditions of 80 DEG C Weight；
(2) by drying object grinds, cross 60 mesh sieves, collect powder；
(3) the powder collected is soaked in deionized water, add the amylase of 0.01-0.05mol/l having activated and albumen Enzyme, reacts 1-2 hour under the conditions of 35-50 DEG C；
(4) add the naoh solution of 0.05-0.1mol/l, react 30-60 minute, then use dilute h2so4Solution neutralizes；
(5) resulting solution will be neutralized filter, then dry, the powder drying be mixed homogeneously by the quality ratio of 1:1 with carbamide, again Soak in deionized water, react 5-10 hour under the conditions of 50 DEG C；
(6) again solution is filtered, deionized water removes the ionic liquid of residual afterwards, after cleaning, under conditions of 50 DEG C, drying is Obtain a kind of heavy metal absorbent.
2. a kind of heavy metal absorbent according to claim 1 it is characterised in that step (4) in dilute h used2so4Molten The mass fraction of liquid is less than 15%.
3. a kind of heavy metal absorbent according to claim 1 it is characterised in that step (5) in, dry be using from The mode so dried.
CN201610779754.0A 2016-08-31 2016-08-31 Process for preparing heavy metal adsorbent through carrot residue modification Pending CN106345421A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610779754.0A CN106345421A (en) 2016-08-31 2016-08-31 Process for preparing heavy metal adsorbent through carrot residue modification

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610779754.0A CN106345421A (en) 2016-08-31 2016-08-31 Process for preparing heavy metal adsorbent through carrot residue modification

Publications (1)

Publication Number Publication Date
CN106345421A true CN106345421A (en) 2017-01-25

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103861570A (en) * 2014-04-04 2014-06-18 何崇康 Novel bagasse absorbing material as well as preparation method thereof
CN104028224A (en) * 2014-06-01 2014-09-10 何芳玲 Wheat straw adsorption material and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103861570A (en) * 2014-04-04 2014-06-18 何崇康 Novel bagasse absorbing material as well as preparation method thereof
CN104028224A (en) * 2014-06-01 2014-09-10 何芳玲 Wheat straw adsorption material and preparation method thereof

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Application publication date: 20170125