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Method for treatment of anionic pollutant containing wastewater with modified tobacco straw

A technology for anionic pollutants and tobacco stalks, applied in water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve rare problems, achieve purification treatment, solve resource utilization, and good adsorption effect Effect

Inactive Publication Date: 2015-11-18
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Research on adsorbents is emerging in an endless stream, but research on the development of exclusive adsorbents based on the nature of wastewater is relatively rare.

Method used

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  • Method for treatment of anionic pollutant containing wastewater with modified tobacco straw
  • Method for treatment of anionic pollutant containing wastewater with modified tobacco straw
  • Method for treatment of anionic pollutant containing wastewater with modified tobacco straw

Examples

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Embodiment 1

[0032] 1. Preparation of modified straw

[0033] (1) Tobacco straw pretreatment

[0034] Wash the dust on the surface of the tobacco stalks with tap water, dry them in an oven at 80°C, cut them into small pieces of 3-5 cm, crush them, and pass through a 60-mesh sieve. Add 20.0g of straw, 250mL of NaOH with a mass concentration of 10%, and 50mL of 3% H with a mass concentration of 15:1 (mL:g) 2 o 2 Put in a 500ml beaker, stir and mix evenly, soak and activate in a constant temperature water bath at 50°C for 4-5 hours. Then it was suction filtered, washed with distilled water until neutral, dried at 65°C to constant weight, and set aside.

[0035] (2) Tobacco straw modification

[0036] ①Sequentially weigh 5g of straw pretreated in (1) into several 250mL Erlenmeyer flasks with different labels, add 80mL of distilled water to infiltrate, and then add 5g of Al 2 (SO 4 ) 3 , Stir to dissolve and mix evenly, then measure 20mL, 10mL, 5mL, 2.5mL and 1.25mL of DADMAC respectivel...

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Abstract

Belonging to the technical field of water treatment in water pollution control, the invention specifically relates to a method for treatment of anionic pollutant containing wastewater with modified tobacco straw. The method includes: employing organic-inorganic cationic monomer graft copolymerization to perform straw fiber modification, firstly pretreating tobacco straw with a sodium hydroxide solution to separate straw cellulose, then under an N2 protection environment, using ceric ammonium nitrate as the initiator, subjecting the pretreated tobacco straw and dimethyl diallyl ammonium chloride, aluminum sulfate to graft copolymerization reaction so as to prepare a novel straw modified material, then using the modified material to remove organic anionic pollutants and inorganic anionic pollutants from water respectively, thus finally realizing treatment of anionic pollutants in wastewater.

Description

technical field [0001] The invention belongs to the technical field of water treatment in water pollution prevention and control, and in particular relates to the treatment of wastewater containing anion pollutants, in particular to a method for treating wastewater containing anion pollutants by using modified tobacco stalks. Background technique [0002] In recent years, with the increase of grain production, the amount of plant straw has increased significantly, and the annual output of crop straw in my country is about 700 million tons of standard coal. At the same time, with the continuous adjustment of my country's industrial structure, the use of straw in daily life has been greatly reduced, resulting in a large amount of surplus agricultural straw being burned in the field or discarded anywhere. Taking tobacco stalks as an example, about 4500kt of tobacco stalks are produced every year in tobacco areas across the country. The overall utilization rate is very low, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/30C02F1/28C02F1/58
Inventor 伍钧周道晏杨刚张小洪彭宏余小玉张延宗李黎肖鸿漆辉
Owner SICHUAN AGRI UNIV
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