Biomass absorbing agent for treating rose-bengal dyeing wastewater as well as preparation method and application of biomass absorbing agent

A technology for biomass adsorbents and dye wastewater, applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., can solve the problems of biosorbents that adsorb rhodamine B molecules, increase manufacturing costs, and lengthy chemical modification In order to achieve broad application prospects and economic value, low cost and excellent adsorption performance

Inactive Publication Date: 2014-12-10
NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Biomass adsorbents currently used in research include fruit pomace, sugar beet pulp, rice husk, soybean hulls, peanut shells, corncobs, straw, etc. However, most natural adsorbents require lengthy chemical modification, which virtually creates new Pollution or heat treatment process with high energy consumption can meet the use requirements, which increases the manufacturing cos...

Method used

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  • Biomass absorbing agent for treating rose-bengal dyeing wastewater as well as preparation method and application of biomass absorbing agent
  • Biomass absorbing agent for treating rose-bengal dyeing wastewater as well as preparation method and application of biomass absorbing agent
  • Biomass absorbing agent for treating rose-bengal dyeing wastewater as well as preparation method and application of biomass absorbing agent

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Experimental program
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Effect test

Embodiment 1

[0026] The camphor leaves collected are cleaned with tap water for deposits such as silt and soil on the surface of the leaves, soaked in 10% NaCl aqueous solution for about 1 hour, and then washed 2 to 3 times with ultrapure water, using a blast drying box. Dry at 100°C for about 12 hours, pulverize in a pulverizer, and sieve through a 100-mesh standard inspection sieve to obtain camphor leaf powder with a pore size of less than 0.15 mm, which is bagged for later use.

Embodiment 2

[0029] Pipette 100mL of rose bengal solution with an initial concentration of 20mg / L and place it in a 250mL Erlenmeyer flask, pass through 0.1mol / L NaOH solution (or 0.1mol / L HNO 3 solution) to adjust the initial pH value of the rose bengal solution, add 300mg of the prepared camphor leaf powder as an adsorbent, at a temperature of 30°C, and after oscillating at a constant temperature at a speed of 170rmp for 150min, absorb 3ml of the reaction solution and centrifuge twice at 9000r / min , using a spectrophotometer to measure the rose bengal concentration in the supernatant, the results are shown in Table 1:

[0030] Table 1 The adsorption inspection data of rose bengal dye wastewater solution with different pH values

[0031]

[0032] It can be seen from Table 2 that with camphor leaf powder as the biomass adsorbent, as the initial pH value of the rose bengal solution increases, the removal rate of rose bengal in the solution gradually decreases, but the removal rat...

Embodiment 3

[0037] Pipette 100mL of rose bengal solution with an initial concentration of 20mg / L and place it in a 250mL conical flask, add 300mg of prepared camphor leaf powder as an adsorbent, and absorb 3ml of Reaction solution, 9000r / min centrifugal separation 2 times, adopt spectrophotometer to measure rose bengal concentration in the supernatant, the result is as shown in table 2:

[0038] Table 2 The adsorption inspection data of the initial concentration of different rose bengal solutions

[0039]

[0040] As can be seen from Table 2, with the camphor tree leaf powder as the biomass adsorbent, with the increase of the initial concentration of the rose bengal solution, the adsorption capacity of the biomass adsorbent also increased thereupon, but the removal of rose bengal in the solution When the concentration of rose bengal solution was 20mg / L, camphor tree leaf powder had the highest removal rate of biomass adsorbent, which could reach 92.7%.

[0041] The adsorption ca...

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Abstract

The invention discloses a biomass absorbing agent for treating rose-bengal dye wastewater as well as a preparation method and an application of the biomass absorbing agent. The biomass absorbing agent with the appropriate grain size is prepared by steps as follows: washing camphor tree leaves, drying, smashing and sieving. According to the invention, camphor tree leaf biomass adopted as the absorbing agent for rose-bengal dye wastewater is simple in preparation technology and low in cost, still has better absorbing capacity in a wider pH range, has a better rose-bengal dye removal effect under the coexistence condition of different metal positive ions and negative ions, and has wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of dye wastewater treatment materials, and in particular relates to a biomass adsorbent for treating rose bengal dye wastewater, a preparation method and an application thereof. Background technique [0002] Among the many environmental problems in our country, the water pollution problem is the most serious, which is the most harmful to people, animals and plants, and seriously affects the development of our country's economy. As a large textile country in China, a large amount of organic dye wastewater produced by the printing and dyeing industry has become one of the most difficult wastewater to treat in water pollution. Most of the organic dye wastewater is produced in the printing and dyeing industry. It is difficult to completely remove the characteristics of degradation, high chroma and complex components. Therefore, how to treat organic wastewater better and more effectively has become a difficult p...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/30C02F1/28
Inventor 甘慧慧张高科靳慧霞张会宁吕慧捷胡正峰
Owner NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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