Scholarlink

<p>Poly(amidoamine) hydrogel particles has been proved to be very suitable for the effective adsorption of heavy metal ions. In this paper, cation-exchange groups were introduced into the poly(amidoamine) hydrogel particles to demonstrate the synergistic effect of adsorption and ion exchange for the removal of heavy metal ions from water. A-M hydrogel particles were synthesized from <i>N</i>,<i> N’</i>-methylene bisacrylamide (MBA) and 2-[(2-aminoethyl) amino] ethane sulfonic acid sodium salt (AAS salt) via inverse suspension condensation polymerization, and these hydrogel particles were applied to the adsorption of heavy metal ions such as Cu(II), Co(II), and Ni(II) from aqueous solution. The adsorption mechanism was explored, and the results confirmed that ion exchange occurred between the sodium sulfonate groups and the heavy metal ions during the adsorption process. The influences of initial monomer molar ratio, pH value, and temperature on the adsorptive behavior of the hydrogel particles were addressed. The maximum adsorption capacities were 149.9&#xa0;mg/g for Cu(II), 94.5&#xa0;mg/g for Co(II), and 114.7&#xa0;mg/g for Ni(II), and the adsorption selectivity of the hydrogel particles in the mixed metal solution followed the order of Cu(II) &gt; Ni(II) &gt; Co(II). The adsorption process was more consistent with the Langmuir model and the pseudo second-order model.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Hyperbranched poly(amidoamine) hydrogel particles with ion exchange properties applied to remove heavy metal ions from water

  • 期刊论文

  • 发表日期：

    2026年4月11日

查看全文
  • Junqiang Li,
  • Mengqi Tan,
  • Zhilin Li,
  • Xi Wang,
  • Chunwang Yi,
  • Ningya Yu,
  • Liping Sheng

摘要

Poly(amidoamine) hydrogel particles has been proved to be very suitable for the effective adsorption of heavy metal ions. In this paper, cation-exchange groups were introduced into the poly(amidoamine) hydrogel particles to demonstrate the synergistic effect of adsorption and ion exchange for the removal of heavy metal ions from water. A-M hydrogel particles were synthesized from N, N’-methylene bisacrylamide (MBA) and 2-[(2-aminoethyl) amino] ethane sulfonic acid sodium salt (AAS salt) via inverse suspension condensation polymerization, and these hydrogel particles were applied to the adsorption of heavy metal ions such as Cu(II), Co(II), and Ni(II) from aqueous solution. The adsorption mechanism was explored, and the results confirmed that ion exchange occurred between the sodium sulfonate groups and the heavy metal ions during the adsorption process. The influences of initial monomer molar ratio, pH value, and temperature on the adsorptive behavior of the hydrogel particles were addressed. The maximum adsorption capacities were 149.9 mg/g for Cu(II), 94.5 mg/g for Co(II), and 114.7 mg/g for Ni(II), and the adsorption selectivity of the hydrogel particles in the mixed metal solution followed the order of Cu(II) > Ni(II) > Co(II). The adsorption process was more consistent with the Langmuir model and the pseudo second-order model.