CN103861570A

CN103861570A - Novel bagasse absorbing material as well as preparation method thereof

Info

Publication number: CN103861570A
Application number: CN201410133285.6A
Authority: CN
Inventors: 何崇康
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-04
Filing date: 2014-04-04
Publication date: 2014-06-18

Abstract

The invention discloses a preparation method of a bagasse absorbing material. The preparation method of the bagasse absorbing material comprises the following steps: selecting thick, strong and mature sugarcanes, cleaning, peeling, crushing, baking or drying in the air, crushing and screening, thus obtaining bagasse powder; then soaking the powder into deionized water, adding activated protease to decompose residual proteins in bagasse; then adding an NaOH solution to have a reaction, then neutralizing by using a diluted HC1 solution, then filtering, and drying in the air; mixing the dried powder and urea uniformly according to the mass ratio of 1:1, soaking in the deionized water again to have a reaction for a period of time, the cleaning and drying, thus obtaining the novel bagasse absorbing material. The preparation technology of the bagasse absorbing material is simple and rapid in flow and small in time consumption; the raw materials are abundant, low in price and friendly to the environment, and has favorable absorbing capability to heavy metal ions in waste water.

Description

A kind of novel bagasse sorbing material and preparation method thereof

Technical field

The present invention relates to a kind of novel absorption material, relate to the preparation method of bagasse sorbing material, be with a wide range of applications at field of environment protection, belong to field of environment protection.

Background technology

Sugarcane is a kind of annual or perennial root Perenniporia martius herbaceous plant.Sugarcane stem is upright, sturdy succulence.Sugarcane through broken, drain just remaining fibrous residue after juice, these residues are vascular bundles of sugarcane, fascicular fibre length is about 0.65-2.17mm, width is 21-28 μ m.Just can output in every production one kilograms of sugar process the bagasse of approximately one kilogram, bagasse is a kind of important reproducible living resources, can be used for papermaking, cement bag paper etc. through operations such as fragmentation, immersion, boilings; Bagasse, owing to containing higher carbon hydrate, also can be used as the auxiliary material of preparing animal feed; Bagasse is also a kind of economical and practical sorbing material.

At present China is the 3rd cane planting big country that is only second to Brazil and India, approximately 7,000 ten thousand tons of annual sugarcane yields, bagasse output reaches more than 8,000,000 tons, but obtain utilization only have 10% left and right, all the other are all burnt as fuel, the wasting of resources is very unfortunate.Bagasse is during as the auxiliary material of animal feed, and due to reasons such as the degree of lignification of bagasse are high, and nutrient is inharmonious, its organic principle utilization rate only has 20%-25%; Bagasse is as papermaking, and what create is all more low-grade paper, has limited it and has applied widely.Owing to approximately containing the wooden of 45% cellulose, 28% hemicellulose and 18% in bagasse, and contain a large amount of hydroxyls and phenolic group, can introduce the group with acidity, alkalescence or Chelating Properties by esterification, etherificate or chelatropic reaction, based on this, bagasse can be used for preparing the sorbing material that heavy metal ion is had to stronger adsorption capacity.

Heavy metal pollution is difficult problem of wastewater treatment always.Heavy metal pollution not only destroys aquatic ecosystem, and causes water quality lack of water, makes industrial or agricultural, life be subject to serious impact, and also serious threat is to we mankind's health.Therefore, use one efficient, economy, the sorbing material of environmental protection is processed heavy metal ions in wastewater, and be urgent problem, and utilize bagasse sorbing material just to there is this advantage, the one, reaction process is simple and direct, consuming time short; The 2nd, abundant raw material, cheap, the 3rd, environmentally friendly.

Summary of the invention

The technical problem of required solution of the present invention is to provide a kind of preparation method of novel bagasse sorbing material.

The technical scheme that realizes the object of the invention is:

A preparation method for novel bagasse sorbing material, comprises the steps:

(1) select the sugarcane of sturdy maturation, clean, remove the peel, broken, dry or dry.

(2) will dry or the bagasse grinds that dries, and cross 70 mesh sieves, collect powder.

(3) the powder of collection is immersed in deionized water, adds the protease of the 0.01-0.05mol/L having activated, under 35-50 ℃ of condition, react 1-2 hour.

(4) add the NaOH solution of 0.05-0.1mol/L, reaction 30-60 minute, then neutralize with rare HCl solution.

(5) gained liquid filtering in inciting somebody to action (4), then dry.

(6) dry the powder obtaining and mix by the mass ratio of 1:1 with urea filtering in (5), be again immersed in deionized water, under 50 ℃ of conditions, react 5-10 hour; Clean and remove residual ionic liquid for 3-4 time by deionized water or with 95% alcohol afterwards, under the condition of clean latter 50 ℃, dry and obtain a kind of novel bagasse sorbing material.

The present invention has following advantages and characteristic:

1, technology is new, compared with prior art, adopts the mode of enzyme degraded, and the protein in bagasse and sucrose are carried out to enzymolysis, and process is simply efficient, does not destroy hydroxyl and the phenolic group functional group of bagasse, guarantees the content of effective adsorption component.

2,, with respect to traditional adsorbent, this to have method simple, with low cost, advantages of environment protection.

3, this adsorbent adsorption effect excellence, is a kind of sorbing material of good Adsorption of Heavy Metals, is with a wide range of applications.

The specific embodiment

Embodiment mono-:

Select the sugarcane of sturdy maturation, clean, remove the peel, broken, dry or dry; By the bagasse grinds of drying or drying, and cross 70 mesh sieves, collect powder; Taking gained powder 50g is immersed in deionized water, add the 0.01mol/L protein enzyme solution 2mL having activated, under 35-50 ℃ of condition, react 1 hour, then add the 0.05mol/L NaOH solution of 10mL, react 50 minutes, again with the neutralization of HCl solution, in gained liquid filtering, then dry; After being mixed by the mass ratio of 1:1 with urea, the powder drying is again immersed in deionized water, under 50 ℃ of conditions, react 6 hours, remove residual ionic liquid for 2-3 time by washed with de-ionized water afterwards, clean 1-2 time with 95% alcohol, novel bagasse sorbing material is dried and obtained to the Constant Temp. Oven of putting into 50 ℃ after cleaning again.

Embodiment bis-:

Select the sugarcane of sturdy maturation, clean, remove the peel, broken, dry or dry; By the bagasse grinds of drying or drying, and cross 70 mesh sieves, collect powder; Take gained powder 50g and be immersed in deionized water, add the 0.05mol/L protein enzyme solution 2mL having activated, under 35-50 ℃ of condition, react 2 hours, then add the 0.1mol/L NaOH solution of 10mL, react 50 minutes, then neutralize with HCl solution.In and gained liquid filtering, then dry; After being mixed by the mass ratio of 1:1 with urea, the powder drying is again immersed in deionized water, under 50 ℃ of conditions, react 8 hours, remove residual ionic liquid for 2-3 time by washed with de-ionized water afterwards, clean 1-2 time with 95% alcohol, novel bagasse sorbing material is dried and obtained to the Constant Temp. Oven of putting into 50 ℃ after cleaning again.

Embodiment tri-:

Select the sugarcane of sturdy maturation, clean, remove the peel, broken, dry or dry, by the bagasse grinds of drying or drying, and cross 70 mesh sieves, collect powder; Take gained powder 100kg and squeeze into 3 tons of health storage tanks, and inject appropriate amount of deionized water in tank, add the 0.05mol/L protein enzyme solution 2L having activated, under 50 ℃ of conditions, react 2 hours, then add the 0.1mol/L NaOH solution of 5L, react 1 hour, then neutralize with HCl solution, in inciting somebody to action, filter with sheet frame compressor with gained liquid, then dry; After being mixed by the mass ratio of 1:1 with urea, again squeezes in 3 tons of sanitary cans in the powder drying, and inject deionized water, remain under 50 ℃ of conditions and react 8 hours, remove residual ionic liquid for 3-4 time by washed with de-ionized water afterwards, after cleaning, at the temperature of 50 ℃, dry oven dry obtains novel bagasse sorbing material.

Claims

1. a preparation method for novel bagasse sorbing material, is characterized in that, this preparation method carries out according to the following steps:

1) select the sugarcane of sturdy maturation, clean, remove the peel, broken, dry or dry;

2) by the bagasse grinds of drying or drying, and cross 70 mesh sieves, collect powder;

3) powder of collection is immersed in deionized water, adds the protease of the 0.01-0.05mol/L having activated, under 35-50 ℃ of condition, react 1-2 hour;

4) add the NaOH solution of 0.05-0.1mol/L, reaction 30-60 minute, then neutralize with rare HCl solution;

5) by 4) middle gained liquid filtering, then dry;

6) by 5) in filter and dry the powder obtaining and mix by the mass ratio of 1:1 with urea, be again immersed in deionized water, under 50 ℃ of conditions, react 5-10 hour; Clean and remove residual ionic liquid for 3-4 time by deionized water or with 95% alcohol afterwards, under the condition of clean latter 50 ℃, dry and obtain novel bagasse sorbing material.

2. the preparation method of a kind of novel bagasse sorbing material according to claim 1, is characterized in that, in step 3), the mass fraction of rare HCl solution used is lower than 15%.

3. the preparation method of a kind of novel bagasse sorbing material according to claim 1, is characterized in that, in step 3), residing temperature is controlled within the scope of 40-50 ℃.

4. the preparation method of a kind of novel bagasse sorbing material according to claim 1, is characterized in that, in step 5), drying is the mode that adopts nature to dry.