Pomelo peel adsorbent modified with sulfo carbamates and preparation method of pomelo peel adsorbent

A technology of tetrathiocarbamic acid and grapefruit peel is applied in chemical instruments and methods, other chemical processes and other directions, which can solve problems such as affecting the reactivity, and achieve the effects of no secondary pollution, reduced production costs and stable performance.

Inactive Publication Date: 2015-09-23
信阳学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large number of hydroxyl and carboxyl groups in pomelo peel are easy to form intramolecular and intermolecular hydrogen bonds, which affect its reactivity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Fresh and healthy pomelo peels were taken to dry naturally, washed and soaked in deionized water, and dried in a blast drying oven to constant weight. Grind and sieve, and place in a desiccator for later use. Measure CS with a volume ratio of 1:1 2 And acetanilide, acetanilide is placed in a conical flask, heated in a water bath at 30°C, and another 10ml of cyclohexanol and 40ml of acetone are prepared as an organic solvent, and carbon disulfide is dissolved therein. Slowly add the mixed solution of carbon disulfide-organic solvent under stirring, react for a period of time, filter with suction, wash twice with absolute ethanol, and dry to obtain tetrathiocarbamic acid.

[0024] Take pomelo peel powder and tetrathiocarbamic acid with a mass volume ratio of 1:1, dissolve in isopropanol, and stir at 60°C for 12h. After the reaction, filter with suction, wash the filter residue with absolute ethanol and deionized water several times, dry at 60°C, and cool to obtain the m...

example 2

[0026] Fresh and healthy pomelo peels were taken to dry naturally, washed and soaked in deionized water, and dried in a blast drying oven to constant weight. Grind and sieve, and place in a desiccator for later use. Measure CS with a volume ratio of 1:1.5 2 and triethanolamine, and triethanolamine is placed in a conical flask, heated in a water bath at 40°C, and another 10ml of cyclohexanol and 50ml of acetone are prepared as an organic solvent, and carbon disulfide is dissolved therein. Slowly add the mixed solution of carbon disulfide-organic solvent under stirring, react for a period of time, filter with suction, wash twice with absolute ethanol, and dry to obtain tetrathiocarbamic acid.

[0027] Take pomelo peel powder and tetrathiocarbamic acid with a mass volume ratio of 1:2, dissolve them in ethylene glycol, and stir at 80°C for 10h. After the reaction, filter with suction, wash the filter residue with absolute ethanol and deionized water several times, dry at 60°C, a...

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PUM

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Abstract

The invention discloses a pomelo peel adsorbent modified with sulfo carbamates, and a preparation method of the pomelo peel adsorbent, and belongs to the field of chemical industry. The pomelo peel adsorbent comprises the components of pomelo peel powder, amine-group compounds, carbon disulfide and an organic solvent, wherein, the amine-group compounds can be one or more kinds of antifebrin, triethanolamine, isopropyl alcohol, aniline and the like; the organic solvent is an alcohol solvent. The adsorbent can be used for removing heavy metal ions comprising Cu2+, Pb2+, Cr3+, Cd2+, Cr6+ and the like, from residues and waste water. The preparation method disclosed by the invention is low in cost and wide in sources, the adsorbent is easy to prepare, and the maneuverability is high. The adsorbent is high in adsorption capacity for metal ions, is high in adsorption rate, can also achieve the purpose of "treating waste with another waste", and also has double effects of purifying environment.

Description

technical field [0001] The invention relates to a method for preparing a heavy metal ion adsorbent by utilizing agricultural and forestry waste, in particular to a thiocarbamate modified pomelo peel adsorbent and a preparation method thereof. Background technique [0002] Pomelo is one of the main fruits in my country, and it is widely planted in many areas in the south. The pomelo peel accounts for about 50% of the total mass of pomelo, and is a common agricultural and forestry waste. In fact, grapefruit peel has rich microporous structure and capillary structure, large specific surface area, and contains a large number of active groups such as hydroxyl and carboxyl in the surface structure of biomass, and has high reactivity with heavy metal ions. It can be used as A good heavy metal ion adsorbent is used in the treatment of industrial wastewater, and the adsorbent is insoluble in water, which is convenient for separation, recovery and recycling, and realizes the sustaina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30
Inventor 刘仁植毛丽惠马艳梅李晓严吴艳玲高永平
Owner 信阳学院
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