Poly(acrylic acid)/poly(acrylamide) hydrogel adsorbent for removing methylene blue,Journal of Applied Polymer Science

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Poly(acrylic acid)/poly(acrylamide) hydrogel adsorbent for removing methylene blue
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-04-24 , DOI: 10.1002/app.49322
Qingyun Lv ₁ , Yong Shen ₁ , Yu Qiu ₁ , Min Wu ₁ , Liming Wang ₁

Affiliation

Cationic dye can cause severe damage to the environment due to their refractory degradation, complex composition and strong stability. Hydrogels as adsorbents have been widely used to treatment the wastewater with dyestuff for their low prices, simple operations, and high efficiency. This work uses poly(acrylic acid) (PAA)/poly(acrylamide)(PAM)/calcium hydroxide nanoparticles (CHN) polymeric hydrogel absorbent to eliminate methylene blue (MB) dye. First, PAM/PAA/CHN hydrogel is produced through copolymerization of acrylic acid monomer and acrylamide monomer using inorganic CHN as cross‐linker. And then, the adsorption performance of such PAM/PAA/CHN hydrogel adsorbent for adsorbing MB dye is explored at different conditions including pH, contacting time, adsorbent dosage, initial concentration of MB, and temperature. A maximum adsorption capability for adsorbing MB reaches 1,056 mg/g. Furthermore, the pseudo‐first‐order mode and Langmuir isotherm model can well describe adsorption behavior of MB dye onto such PAA/PAM/CHN hydrogel adsorbent. Thereby, as‐prepared PAA/PAM/CHN hydrogel could be a potential adsorbent for eliminating organic dyes from wastewater.

中文翻译：

聚（丙烯酸）/聚（丙烯酰胺）水凝胶吸附剂用于去除亚甲基蓝

阳离子染料由于其难降解性，复杂的组成和强大的稳定性而可能严重破坏环境。水凝胶作为吸附剂因其价格低廉，操作简单和效率高而被广泛用于处理含染料的废水。这项工作使用聚（丙烯酸）（PAA）/聚（丙烯酰胺）（PAM）/氢氧化钙纳米粒子（CHN）聚合物水凝胶吸收剂来消除亚甲基蓝（MB）染料。首先，PAM / PAA / CHN水凝胶是通过使用无机CHN作为交联剂使丙烯酸单体和丙烯酰胺单体共聚而制得的。然后，在pH，接触时间，吸附剂用量，MB初始浓度，温度等不同条件下，探讨了PAM / PAA / CHN水凝胶吸附剂对MB染料的吸附性能。吸附MB的最大吸附能力达到1,056 mg / g。此外，伪一阶模式和Langmuir等温模型可以很好地描述MB染料在这种PAA / PAM / CHN水凝胶吸附剂上的吸附行为。因此，准备好的PAA / PAM / CHN水凝胶可能是消除废水中有机染料的潜在吸附剂。

更新日期：2020-04-24

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