Synthesis of hydrophilic super-crosslinked cinnamic acid and its adsorption performance for printing and dyeing wastewater
In order to obtain a hydrophilic super-crosslinked polymer adsorbent for printing and dyeing wastewater treatment,and explore its adsorption performance,cinnamic acid with a carboxyl group was linked to a hydrophilic super-crosslinked porous adsorbent through Friedel-Crafts alkylation reaction at 80℃.The ad-sorption performance and rules of the said super-crosslinked cinnamic acid adsorbent for methylene blue were investigated.The results showed that,under room temperature(23℃),when the pH value was 5.8,the adsorption capacity of the said adsorbent for 175 mg/L methylene blue solution was 347.78 mg/g.When the adsorbent dosage was 0.02 g and the pH value was 10,the adsorption capacity reached a high level of 840.55 mg/g.The re-search results of adsorption kinetics and isotherm showed that,the adsorption process was more consistent with pseudo-second-order equation and Langmuir equation.Super-crosslinked cinnamic acid has high adsorption ca-pacity and good hydrophilicity,which is an excellent adsorbent for printing and dyeing wastewater.
adsorptionprinting and dyeing wastewatersuper-crosslinked porous polymermethylene bluecinnamic acidhydrophilia
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