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首页> 外文期刊>Environmental Science & Technology >Donnan Dialysis-Osmotic Distillation (DD-OD) Hybrid Process for Selective Ammonium Recovery Driven by Waste Alkali
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Donnan Dialysis-Osmotic Distillation (DD-OD) Hybrid Process for Selective Ammonium Recovery Driven by Waste Alkali

机译：Donnan透析 - 渗透蒸馏（DD-OD）杂种方法，用于由废碱驱动的选择性铵恢复

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摘要

This work proposed an innovative and energy-efficient Donnan Dialysis (DD) and Osmotic Distillation (OD) hybrid process for alkali-driven ammonium recoveryfrom wastewater. The efficiencyand feasibility of ammonium removal and recovery from synthetic and real wastewater using NaOH and waste alkali were investigated. Ammonium in the feed first transported across the cation exchange membrane and accumulated in the receiver chamber. It is then deprotonated as ammonia, passingthroughthegaspermeablemembraneandfinally isfixedas ammonium salt in the acid chamber. Our results indicated that employing wastealkali (red mudleachate) as drivingsolution ledtoexcellent ammonium recovery performances (recovery efficiency of>80%), comparableto thoseof NaOH solution.When theinitialammonium concentration was S and 50 mM, the waste alkali driven DD-OD process achieved acceptable NH_4~+-N flux density of 16.8 and 169 g N m~2 d~(-1), at energy cost as low as 8.38 and 2.06 kWh kg~(-1) N, respectively. Since this alkali driven DD-OD hybrid process is based on solute concentration (or partial pressure) gradient, it could be an energy-effective technology capable of treating wastewaters containing ammonium using waste alkali to realize nutrients recovery in a sustainable manner.
机译：这项工作提出了一种创新和节能的DONNAN透析（DD）和渗透蒸馏（OD）杂化方法，用于废水中的碱驱动的铵回收。研究了使用NaOH和废碱从合成和真实废水中除去和回收铵的效率和恢复。进料中的铵首先在阳离子交换膜上传送并积聚在接收器室中。然后将其剥夺为氨，通过酸腔中的逐渐通过硫化铵氨基铵铵盐。我们的结果表明，使用Wastealkali（红色MudleAlte）作为驱动器解决Ledtoexcellent铵恢复性能（恢复效率> 80％），比较NaOH溶液。当initialimonium浓度为s和50 mm时，废物碱驱动的DD-OD过程可接受的NH_4 〜+ -n磁通密度为16.8和169g n m〜2 d〜（-1），以低至8.38和2.06 kwh kg〜（-1）n。由于该碱驱动的DD-OD杂化方法基于溶质浓度（或部分压力）梯度，因此它可以是能够用废碱处理含有铵的废水以实现以可持续方式的营养物质来处理含有铵的能量有效技术。

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  • 来源
    《Environmental Science & Technology》 |2021年第10期|7015-7024|共10页
  • 作者

    Cong Chen; Minyuan Han; Jingmei Yao; Yue Zhi; Yuanyuan Liu; Changyong Zhang; Le Han;

  • 作者单位

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment Ministry of Education College of Environment and Ecology Chongqing University Chongqing 400045 PR China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment Ministry of Education College of Environment and Ecology Chongqing University Chongqing 400045 PR China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment Ministry of Education College of Environment and Ecology Chongqing University Chongqing 400045 PR China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment Ministry of Education College of Environment and Ecology Chongqing University Chongqing 400045 PR China;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment Ministry of Education College of Environment and Ecology Chongqing University Chongqing 400045 PR China;

    UNSW Water Research Centre School of Civil and Environmental Engineering University of New South Wales Sydney New South Wales 2052 Australia;

    Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment Ministry of Education College of Environment and Ecology Chongqing University Chongqing 400045 PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ammonium recovery; Donnan Dialysis; Osmotic Distillation; concentration gradient; waste alkali;

    机译：铵恢复;唐南透析;渗透蒸馏;浓度梯度;废物碱;

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