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A kind of preparation method of shaped masson pine needles

A technology of masson pine needles and powder, which is applied in the field of materials, can solve the problems of difficult recycling, desorption and regeneration, secondary pollution, waste of resources, etc., and achieve the effects of excellent adsorption effect, low price and simple processing technology

Active Publication Date: 2018-10-19
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the adsorbents used in the treatment of various types of wastewater are powders. Powdered adsorbents can fully contact with pollutants in wastewater, and have the advantages of fast adsorption rate and high removal rate. The solvent is not easy to recycle, desorb and regenerate, which not only causes waste of resources but also easily produces secondary pollution

Method used

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  • A kind of preparation method of shaped masson pine needles
  • A kind of preparation method of shaped masson pine needles
  • A kind of preparation method of shaped masson pine needles

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. Experimental conditions

[0028] (1) Biomass raw material: Masson pine needles (on the campus of Guangxi University for Nationalities)

[0029] (2) Experimental equipment: miniature plant pulverizer (model: FZ102), electric heating constant temperature blast drying oven, small molder (syringe type), electronic balance

[0030] (3) Experimental reagents: sodium carboxymethylcellulose, concentrated phosphoric acid, deionized water. The concentrated phosphoric acid has a mass fraction of 85%, a density of 1.69 g / ml, and a substance concentration of 14.7 mol / L.

[0031] 2. Experimental steps

[0032] (1) Sample treatment: the collected pine needles were first cleaned with tap water, then rinsed several times with deionized water, dried in the air and dried to constant weight, and then crushed with a miniature plant grinder to obtain pine needle powder After passing through a 30-mesh sieve, place it in a sealed bag and store it in a drying tower for future use.

[003...

Embodiment 2

[0137] A preparation method for molding masson pine needles, comprising the steps of:

[0138] (1) washing, airing and drying the pine needles to a constant weight and pulverizing them into powder to obtain the pine needles powder;

[0139] (2) adding 0.6kg sodium carboxymethyl cellulose to every liter of volume fraction in the phosphoric acid solution of 60%, obtain binding agent after mixing;

[0140] (3) Add 0.6kg masson pine needle powder to each liter of binder, mix evenly and extrude into strips with a diameter of about 3mm and a length of 5mm, and finally place them in an electric blast drying oven at 50°C to dry. The shaped masson pine needles are obtained.

[0141] The masson pine needle powder is obtained by passing through a 30-mesh sieve.

Embodiment 3

[0143] A preparation method for molding masson pine needles, comprising the steps of:

[0144] (1) washing, airing and drying the pine needles to a constant weight and pulverizing them into powder to obtain the pine needles powder;

[0145] (2) adding 0.4kg sodium carboxymethyl cellulose to every liter of volume fraction in the phosphoric acid solution of 40%, obtain binding agent after mixing;

[0146] (3) Add 0.4 kg of masson pine needle powder to each liter of binder, mix evenly, make it into granules and dry to obtain the shaped masson pine needles.

[0147] The masson pine needle powder is obtained by passing through a 50-mesh sieve.

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Abstract

A preparation method for shaped pinus massoniana needle comprises the following steps: (1) cleaning pinus massoniana needle, airing, baking to constant weight, and crushing into a powder, so as to obtain a pinus massoniana needle powder; (2) adding 0.4-0.6 Kg of carboxymethylcellulose sodium into per one litre of a phosphoric acid solution with the volume percentage of 40-60%, and mixing uniformly, so as to obtain a binder; and (3) adding 0.4-0.6 Kg of the pinus massoniana needle powder into per one litre of the binder, uniformly mixing to prepare a particle, and drying, so as to obtain the shaped pinus massoniana needle. The price of the raw materials of the shaped pinus massoniana needle is low, the processing technology is simple, and the shaped pinus massoniana needle possesses excellent adsorption effect on Cr (VI) in water.

Description

technical field [0001] The invention relates to the field of materials, in particular to a preparation method of shaped masson pine needles. Background technique [0002] Due to the rapid development of industry, the discharge of heavy metal ion wastewater is increasing, resulting in more and more heavy metal pollution in water, which directly threatens the environment and human health. Among them, Cr(VI) is one of the most serious pollutants to environmental pollution and human harm, and the chromium-containing wastewater must be strictly treated and discharged only after reaching the standard. [0003] A large amount of agricultural and forestry wastes are produced in our country every year. If these agricultural and forestry wastes are directly discarded or disposed of by incineration, it will have a great impact on the environment and life. However, using them as biomass adsorbents and treating waste water can well avoid waste and environmental pollution caused by combu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/24B01J20/281B01J20/30C02F1/28
CPCB01J20/223B01J20/24B01J20/3028B01J20/3042B01J2220/4837C02F1/286C02F2101/22
Inventor 閤明勇钟晓芸周自立唐艳葵张寒冰
Owner GUANGXI UNIV
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