A method for removing triclosan in waste water by using protonated bean cake
A technology of protonation and triclosan, applied in chemical instruments and methods, water pollutants, other chemical processes, etc., can solve the problems of complex reaction conditions, large consumption, secondary pollution, etc., and achieve simple and easy process, Protect the environment and realize the effect of recycling
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Embodiment 1
[0036] Take a certain quality of bean cake, wash it several times with distilled water to remove impurities and dust on the surface of the bean cake, dry at 80°C for 24 hours, crush and sieve to a particle size of 300-600 μm; protonize the bean cake: at room temperature, sieve The divided bean cake particles were immersed in 0.1mol / L hydrochloric acid solution for 12 hours. The impregnation ratio was 10g bean cake particles: 1L hydrochloric acid solution, washed several times with distilled water until the pH was neutral, and dried to obtain protonated bean cake adsorbent A.
[0037] In order to verify that the adsorption capacity of protonated bean cakes is higher than that of unprotonated bean cakes, a comparative example is set up: take a certain mass of bean cakes, wash them with distilled water several times to remove impurities and dust on the surface of the bean cakes, and dry them at 80°C for 24 hours. Pulverize and sieve to a particle size of 300-600 μm to obtain the b...
Embodiment 2
[0041] Take a certain quality of bean cake, wash it several times with distilled water to remove impurities and dust on the surface of the bean cake, dry at 100°C for 12 hours, crush and sieve to a particle size of 300-600 μm; protonize the bean cake: at room temperature, sieve The divided bean cake particles were immersed in 0.2mol / L hydrochloric acid solution for 9 hours. The impregnation ratio was 10g bean cake particles: 1L hydrochloric acid solution, washed several times with distilled water until the pH was neutral, and dried to obtain protonated bean cake adsorbent B.
[0042] Add protonated bean cake adsorbent B to wastewater containing 50mg / L triclosan at a pH of 2.0, wherein the content of adsorbent B in the wastewater is 2g / L, stir or vibrate at 20°C for 10h, then filter and separate, The filtrate is adjusted to be neutral and discharged to complete the adsorption of triclosan in the wastewater.
[0043] In addition, in order to detect the influence of pH value on t...
Embodiment 3
[0046] Take a certain quality of bean cake, wash it several times with distilled water to remove impurities and dust on the surface of the bean cake, dry at 60°C for 36 hours, crush and sieve to a particle size of 300-600 μm; carry out protonization treatment on the bean cake: at room temperature, sieve The divided bean cake particles were immersed in 0.3mol / L hydrochloric acid solution for 6h, the impregnation ratio was 10g bean cake particles: 1L hydrochloric acid solution, washed several times with distilled water until the pH was neutral, and dried to obtain protonated bean cake adsorbent C.
[0047] Take the protonated bean cake adsorbent C and add it to the waste water with a pH value of 4.0 and 50 mg / L of triclosan, so that the content of the protonated bean cake adsorbent C in the waste water is 1 g / L. After stirring or shaking at 20°C for 12 hours, Filtration and separation, the filtrate is adjusted to be neutral and then discharged to complete the adsorption of triclo...
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