Scholarlink

<p>The study reports a two-step method for creating anchoring sites for nitrate on the surface of charcoal. The technologically simple process involves an acid treatment (HNO<sub>3</sub>, 1:10 dilution) followed by a heat treatment (800&#xa0;°C) in a non-oxidizing atmosphere. The modified charcoal's surface chemistry, structure, and composition were characterized. Our research underscores the inefficacy of untreated charcoal in nitrate removal. In stark contrast, the acid treatment creates surface anchoring sites that effectively remove basic nitrate anions from water, lowering the nitrate concentration from 105 to 57.8&#xa0;ppm (55% reduction in nitrate levels!). Those anchoring sites for nitrate form without collapsing macropores within charcoal particles. Surface modification occurs with the enrichment of H, N, and likely O and an impoverishment of C. The process outlined in this work offers a powerful solution for small, isolated, low-resource communities seeking to effectively utilize locally available plant biomass while simultaneously constructing efficient water filters to remove nitrate. This innovative approach not only enhances local resource valorization but also directly addresses critical water quality issues, empowering communities to take charge of their health and sustainable development.</p> Graphical Abstract <p></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

Cost-Effective Development of Nitrate Anchoring Sites on Charcoal for Low-Resource Communities to Filter Water

  • 期刊论文

  • 发表日期：

    2025年2月20日

查看全文
  • Leonel Andrés Long,
  • Pablo Maximiliano Arnal

摘要

The study reports a two-step method for creating anchoring sites for nitrate on the surface of charcoal. The technologically simple process involves an acid treatment (HNO3, 1:10 dilution) followed by a heat treatment (800 °C) in a non-oxidizing atmosphere. The modified charcoal's surface chemistry, structure, and composition were characterized. Our research underscores the inefficacy of untreated charcoal in nitrate removal. In stark contrast, the acid treatment creates surface anchoring sites that effectively remove basic nitrate anions from water, lowering the nitrate concentration from 105 to 57.8 ppm (55% reduction in nitrate levels!). Those anchoring sites for nitrate form without collapsing macropores within charcoal particles. Surface modification occurs with the enrichment of H, N, and likely O and an impoverishment of C. The process outlined in this work offers a powerful solution for small, isolated, low-resource communities seeking to effectively utilize locally available plant biomass while simultaneously constructing efficient water filters to remove nitrate. This innovative approach not only enhances local resource valorization but also directly addresses critical water quality issues, empowering communities to take charge of their health and sustainable development.

Graphical Abstract