Unlock instant, AI-driven research and patent intelligence for your innovation.

Magnetic bio-adsorbent and method for adsorbing and removing heavy metals in industrial wastewater

A technology for biological adsorbents and industrial wastewater, applied in biological water/sewage treatment, alkali metal compounds, chemical instruments and methods, etc., can solve the problems of complex production process and high cost of adsorbents, and achieve major application prospects and wastewater treatment costs. low, high efficiency

Inactive Publication Date: 2019-06-18
中科协创环境科技江苏有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most commonly used adsorbents are activated carbon and modified cellulose, etc., but most of the adsorbents limit their application due to high cost or complicated production process.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A kind of magnetic biosorbent, with brewer's yeast as adsorption substance, after reacting with mixed iron salt solution, adding sodium tripolyphosphate solidified 5-10h to prepare magnetic biosorbent; Wherein, the molar ratio of mixed iron salt is 1: 1.5 FeSO 4 ·7H 2 O and FeCl 3 ·The mixture of 6H2O, brewer's yeast and mixed iron salt solution in a weight ratio of 1:1.

Embodiment 2

[0014] Prepare 1L of 0.1g / L lead standard solution, adjust the pH value to be greater than 3, put the magnetic biosorbent into the adjustment pool of the lead standard solution, and after 18 hours of aeration and stirring, detect the content of heavy metals in the lead standard solution at any time, when the lead standard solution When the content of heavy metal in the solution is less than 0.01g / L, after fixing and reclaiming the magnetic biosorbent that has adsorbed heavy metal with magnetite, change new lead standard solution, once again adsorb the heavy metal in the lead standard solution, until adsorption is saturated, Fix and recover the magnetic biosorbent adsorbed with heavy metals with a magnet After recovery, soak in 2mol / L nitric acid solution, stir evenly, soak for 24 hours, fix and recover the magnetic biosorbent with heavy metals adsorbed with a magnet, wash with water, and dry That is, the regeneration is completed.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a magnetic bio-adsorbent. The magnetic bio-adsorbent is prepared by taking beer yeast as an adsorbing substance, mixing the beer yeast with a mixed iron salt solution, reacting, then adding a curing agent and curing for 5-10 h, wherein mixed iron salt is a mixture of FeSO4.7H2O and FeCl3.6H2O with the molar ratio of 1 to (1.5-2.5); and the weight ratio of the beer yeast andthe mixed iron salt solution is (1-2.5) to 1. The magnetic bio-adsorbent disclosed by the invention has the beneficial effects that waste is used to treat waste; the beer yeast, the mixed iron salt solution and the curing agent are utilized to prepare the magnetic bio-adsorbent; the heavy metals in the wastewater are adsorbed, removed and recovered; the wastewater treatment cost is low; the efficiency is high; biogas residues after recovery of the heavy metals can be cyclically utilized; useful resources are fully utilized; and a great application prospect is realized.

Description

technical field [0001] The invention relates to a magnetic biological adsorbent and a method for adsorbing and removing heavy metals in industrial waste water. Background technique [0002] Heavy metals are toxic elements that can accumulate in living organisms. With the development of industry, heavy metal pollution has received widespread attention. After entering the environment, heavy metals will accumulate and enrich in the biological chain, seriously endangering life and health. At present, the removal methods of heavy metals in water mainly include chemical precipitation, electrolysis, ion exchange, membrane separation and adsorption. Among them, the adsorption method has attracted much attention because of its advantages of no secondary pollution and renewable recovery. At present, the most commonly used adsorbents are activated carbon and modified cellulose, etc., but most adsorbents limit their application due to high cost or complicated production process. Conte...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J20/24B01J20/28C02F3/34C02F101/20
Inventor 仲鹏鹏于鹏
Owner 中科协创环境科技江苏有限公司