Scholarlink

<p>In soil contamination management, simultaneous remediation of soil contaminated with multiple heavy metals (MHM-contaminated soil) continues to present a substantial scientific challenge. This study utilized cellulose nanocrystals (CNC) as an environmentally friendly washing agent to remediate soil contaminated with cadmium (Cd), lead (Pb), copper (Cu), and zinc (Zn). We investigated how CNC affects heavy metals removal under various conditions through soil washing experiments and its impact on soil health (including heavy metal distribution and ecological risk, soil phytotoxicity, soil microbial abundance and diversity) and the metals removal mechanism determined via Fourier transform infrared and 2D correlation spectroscopy (FTIR-2D COS). The results showed that CNC’s pH significantly influenced the removal of heavy metals. CNC treatment reduced mobile Cd fractions by &gt; 20.7%, lowered ecological risk from moderate (RI = 153.9) to low (&lt; 150), maintained seed germination rates (comparable to controls) with 1.57&#xa0;cm longer roots, and enhanced microbial richness (Chao1/ACE) while preserving diversity (Shannon/Simpson). FTIR-2D COS results showed that functional groups (–COOH and O–H) of CNC play a critical role in metals removal through electrostatic adsorption, displacement, and complexation reaction. This study suggested that CNC holds considerable potential for green-remediating MHM-contaminated soil.</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

Cellulose nanocrystals for green remediation of contaminated soil with multiple heavy metals

  • 期刊论文

  • 发表日期：

    2025年3月25日

查看全文
  • Yaoyue Zhang,
  • Zesen Ye,
  • Weishan Liao,
  • Qitang Wu,
  • Zebin Wei,
  • Rongliang Qiu,
  • Ting Gao,
  • Weixuan Xian,
  • Kailong Zhang,
  • Mi Li,
  • Yangmei Chen

摘要

In soil contamination management, simultaneous remediation of soil contaminated with multiple heavy metals (MHM-contaminated soil) continues to present a substantial scientific challenge. This study utilized cellulose nanocrystals (CNC) as an environmentally friendly washing agent to remediate soil contaminated with cadmium (Cd), lead (Pb), copper (Cu), and zinc (Zn). We investigated how CNC affects heavy metals removal under various conditions through soil washing experiments and its impact on soil health (including heavy metal distribution and ecological risk, soil phytotoxicity, soil microbial abundance and diversity) and the metals removal mechanism determined via Fourier transform infrared and 2D correlation spectroscopy (FTIR-2D COS). The results showed that CNC’s pH significantly influenced the removal of heavy metals. CNC treatment reduced mobile Cd fractions by > 20.7%, lowered ecological risk from moderate (RI = 153.9) to low (< 150), maintained seed germination rates (comparable to controls) with 1.57 cm longer roots, and enhanced microbial richness (Chao1/ACE) while preserving diversity (Shannon/Simpson). FTIR-2D COS results showed that functional groups (–COOH and O–H) of CNC play a critical role in metals removal through electrostatic adsorption, displacement, and complexation reaction. This study suggested that CNC holds considerable potential for green-remediating MHM-contaminated soil.