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Konjac glucomannan water purification sponge and preparation method thereof

A konjac glucomannan, sponge technology, applied in chemical instruments and methods, other chemical processes, water/sewage treatment, etc., can solve the problems of potential threats to human health, threats to human survival and development, improper disposal of pollutants, etc. To achieve the effect of favorable adsorption, rich pores, and low cost

Active Publication Date: 2017-02-22
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the chemical reagent thiourea is used in the preparation, which may produce harmful gas and pose a potential threat to human health.
[0006] With the development of science, the progress of the times, and the rapid growth of population, the improper treatment of pollutants has caused serious pollution to the water environment, seriously threatening the survival and development of human beings; at the same time, it has also caused a great waste of resources.

Method used

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  • Konjac glucomannan water purification sponge and preparation method thereof

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Effect test

Embodiment 1

[0022] Embodiment 1, a kind of preparation method of konjac glucomannan water purification sponge comprises the following steps:

[0023] (1) Preparation of graphene oxide solution: take 3.0g 325 mesh graphite, 3.0g NaNO 3 and 140mL concentrated H 2 SO 4 Add it to a beaker, stir it under ice-water bath for 15min, then take 24g KMnO 4 Slowly add to the reaction system, stir in a water bath at 35°C for 2 hours to form a dark green viscous substance; raise the temperature of the water bath to 90°C, add 40 mL of deionized water to the reaction system, continue stirring for 1 hour, and then add 18 mL of H 2 o 2 solution and 100 mL of deionized water to obtain a light brown solution, then add 200 mL of HCl solution to the system, wash, remove the supernatant, repeat washing 3 times, and finally add 800 mL of deionized water to the system, at a speed of 9000r / min Centrifuge for 30 min, remove the supernatant, and wash repeatedly until the pH of the supernatant is 7.0 to obtain im...

Embodiment 2

[0028] Embodiment 2, a kind of preparation method of konjac glucomannan water purification sponge comprises the following steps:

[0029] (1) Preparation of graphene oxide solution: take 3.0g 325 mesh graphite, 3.0g NaNO 3 and 140mL concentrated H 2 SO 4 Add it to a beaker, stir it under ice-water bath for 15min, then take 24g KMnO 4 Slowly add to the reaction system, stir in a water bath at 35°C for 2 hours to form a dark green viscous substance; raise the temperature of the water bath to 90°C, add 40 mL of deionized water to the reaction system, continue stirring for 1 hour, and then add 18 mL of H 2 o 2 solution and 100 mL of deionized water to obtain a light brown solution, then add 200 mL of HCl solution to the system, wash, remove the supernatant, repeat washing 3 times, and finally add 800 mL of deionized water to the system, at a speed of 9000r / min Centrifuge for 30 min, remove the supernatant, and wash repeatedly until the pH of the supernatant is 7.0 to obtain im...

Embodiment 3

[0034] Embodiment 3, a kind of preparation method of konjac glucomannan water purification sponge comprises the following steps:

[0035] (1) Preparation of graphene oxide solution: take 3.0g 325 mesh graphite, 3.0g NaNO 3 and 140mL concentrated H 2 SO 4 Add it to a beaker, stir it under ice-water bath for 15min, then take 24g KMnO 4 Slowly add to the reaction system, stir in a water bath at 35°C for 2 hours to form a dark green viscous substance; raise the temperature of the water bath to 90°C, add 40 mL of deionized water to the reaction system, continue stirring for 1 hour, and then add 18 mL of H 2 o 2 solution and 100 mL of deionized water to obtain a light brown solution, then add 200 mL of HCl solution to the system, wash, remove the supernatant, repeat washing 3 times, and finally add 800 mL of deionized water to the system, at a speed of 9000r / min Centrifuge for 30 min, remove the supernatant, and wash repeatedly until the pH of the supernatant is 7.0 to obtain im...

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Abstract

The invention relates to konjac glucomannan water purification sponge and a preparation method thereof. The preparation method of the konjac glucomannan water purification sponge includes preparation of graphene oxide solution, preparation of alkaline graphene oxide solution, preparation of deacetylated konjac glucomannan-graphene oxide sol, preparation of irreversible gel and preparation of the water purification sponge. The konjac glucomannan water purification sponge is characterized in that konjac glucomannan serves as a main component and is deacetylated by addition of Na2CO3 to further form the irreversible gel. The prepared konjac glucomannan water purification sponge is rich in air voids and extremely large in specific surface area, adsorption performance of the water purification sponge is greatly improved, and the water purification sponge has an antibacterial function and is capable of effectively killing harmful microbes and inhibiting propagation of harmful bacteria in water. The konjac glucomannan water purification sponge further has advantages of low cost, natural degradability, easiness in popularization and the like.

Description

technical field [0001] The invention relates to a water purification material and a preparation method thereof, in particular to a konjac glucomannan water purification sponge and a preparation method thereof. Background technique [0002] Water is the source of life, the necessary condition for the existence of life, and the most important component of human tissue. With the rapid development of science and technology, the large-scale discharge of industrial wastewater, agricultural sewage and domestic sewage has caused a wide range of water pollution. The heavy metals, harmful bacteria, and organic poisons contained in polluted water pose a serious threat to human health. Water pollution It is the main cause of major diseases such as malaria, schistosomiasis, dengue fever, and cancer. About 3.5 to 5 million people in the world die from diseases related to water pollution every year. In developing countries, about 80% of the diseases are caused by citing Spread by unsanita...

Claims

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Application Information

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IPC IPC(8): C08J9/28C08L5/02C08K9/02C08K3/04B01J20/24B01J20/28B01J20/30C02F1/28
CPCB01J20/24B01J20/28045C02F1/286C08J9/28C08J2201/0504C08J2305/02C08K3/04C08K9/02C08L5/02
Inventor 庞杰袁毅吴佳煜穆若郡王林龚静妮倪永升洪馨
Owner FUJIAN AGRI & FORESTRY UNIV
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