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Beet pulp biological adsorbent as well as preparation method and application thereof

A technology of biosorbent and sugar beet meal, which is applied in the direction of using adsorbent purification, application, chemical instruments and methods, etc. It can solve the problems of unsatisfactory effect and non-reusable sugar beet meal, and achieve high utilization efficiency and less impurities , Strong adsorption effect

Active Publication Date: 2017-10-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are only 2 reports on the direct use of sugar beet pulp in the field of sugar juice cleaning in the literature retrieved by Google Scholar, one of which is used for sugar juice cleaning after saponification and citric acid treatment, modified Ca 2+ / Mg 2+ The adsorption capacity of the two is only 18mg / g, the effect is not ideal, and the low-value sugar beet meal cannot be reused

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation and pretreatment of sugar beet pulp: the dry sugar beet pulp is sorted, crushed, and passed through a 20-mesh sieve. Mix sugar beet pulp with 0.1mol / L NaOH solution at a ratio of 1:20g / mL for 2 hours, filter and drain, wash until the pH value does not change, and dry for later use;

[0036] (2) Modification of sugar beet pulp: Add 100g of sugar beet pulp treated with alkali solution into a 2L beaker, and add 0.5mol / L of FeCl at a volume ratio of 1:20g / mL 3 The solution was continuously stirred for 12 hours under normal temperature conditions, and after the reaction was completed, it was filtered, washed with distilled water until the filtrate was clear, and dried for later use;

[0037] (3) Add the dried sugar beet pulp to a mixed solution of 0.2 mol / L NaOH containing 5% NaCl at a mass volume ratio of 1:20 g / mL and mix for 24 hours to obtain modified sugar beet pulp, filter and wash Until the pH value does not change, it is dried at 50° C. for later use...

Embodiment 2

[0042](1) Preparation and pretreatment of sugar beet pulp: the dry sugar beet pulp is sorted, crushed, and passed through a 20-mesh sieve. Mix sugar beet pulp with 0.1mol / L NaOH solution at a ratio of 1:20g / mL for 2 hours, filter and drain, wash until the pH value does not change, and dry for later use;

[0043] (2) Modification of sugar beet pulp: Add 100g of sugar beet pulp treated with alkali solution into a 2L beaker, and add 0.5mol / L of FeCl at a volume ratio of 1:20g / mL 3 The solution was continuously stirred for 12 hours under normal temperature conditions, and after the reaction was completed, it was filtered, washed with distilled water until the filtrate was clear, and dried for later use;

[0044] (3) Add the dried sugar beet pulp to a mixed solution of 0.2 mol / L NaOH containing 5% NaCl at a mass volume ratio of 1:20 g / mL and mix for 24 hours to obtain modified sugar beet pulp, filter and wash Until the pH value does not change, it is dried at 50° C. for later use ...

Embodiment 3

[0049] (1) Preparation and pretreatment of sugar beet pulp: the dry sugar beet pulp is sorted, crushed, and passed through a 20-mesh sieve. Mix sugar beet pulp with 0.2mol / L NaOH solution at a ratio of 1:10g / mL for 3 hours, filter and drain, wash until the pH value does not change, and dry for later use;

[0050] (2) Modification of sugar beet pulp: Add 100g of sugar beet pulp treated with alkali solution into a 2L beaker, and add 0.5mol / L of FeCl at a volume ratio of 1:20g / mL 3 The solution was continuously stirred for 12 hours under normal temperature conditions, and after the reaction was completed, it was filtered, washed with distilled water until the filtrate was clear, and dried for later use;

[0051] (3) Add the dried sugar beet pulp to a mixed solution of 0.2 mol / L NaOH containing 5% NaCl at a mass volume ratio of 1:20 g / mL and mix for 24 hours to obtain modified sugar beet pulp, filter and wash Until the pH value does not change, it is dried at 50° C. for later use...

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Abstract

The invention belongs to the technical field of adsorbing materials and discloses a beet pulp biological adsorbent as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly performing mixed reaction between dried beet pulp and alkali liquor to obtain beet pulp after alkali pre-treatment; then performing mixed reaction with a FeCl3 solution, washing a reaction product, drying and adding into an alkaline salt solution for mixed reaction to obtain the beet pulp biological adsorbent. The beet pulp biological adsorbent as well as the preparation method and the application thereof disclosed by the invention have the benefits that by modifying the beet pulp, the adsorbability of the beet pulp is greatly improved; the beet pulp biological adsorbent can be applied to organic or inorganic non-sugar adsorption treatment in the sugar making industry; the beet pulp biological adsorbent after adsorption saturation can be soaked in a sodium chloride solution with a concentration of 6-12 percent by weight for regeneration, thereby having wide application prospect and being referenced in cane sugar making and other industrial fields.

Description

technical field [0001] The invention belongs to the technical field of adsorption materials, and in particular relates to a sugar beet meal biosorbent and its preparation method and application. Background technique [0002] Sugar beet pulp is the residue left after the sugar beet tubers are shredded and extracted. Xinjiang is the largest beet sugar producing area in my country. Beet sugar production accounts for 60% of the country, involving nearly one million sugar farmers. my country processes about 12 million tons of beet every year. According to reports, every ton of beet root processed produces about 0.9 tons of beet rapeseed meal. At present, sugar beet meal is mainly used as animal feed, and the comprehensive utilization rate is low. Sugar beet meal without chemical modification can be used for the adsorption of metal ions such as Cu(Ⅱ), Cd(Ⅱ), Pb(Ⅱ), Ni(Ⅱ), Ca(Ⅱ) and Zn(Ⅱ) and other divalent metal ions , the order of adsorption capacity for these divalent metals i...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C13B20/12
CPCB01J20/0288B01J20/24B01J2220/4825C13B20/126
Inventor 朱思明高梓原田苗苗徐斌斌于淑娟
Owner SOUTH CHINA UNIV OF TECH
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