Strategies for ammonia recovery from wastewater: a review

IF 15 2区环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Environmental Chemistry Letters Pub Date : 2024-08-23 DOI:10.1007/s10311-024-01768-6

Mohamed Farghali, Zhonghao Chen, Ahmed I. Osman, Israa M. Ali, Dalia Hassan, Ikko Ihara, David W. Rooney, Pow-Seng Yap

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Abstract

The circular economy requires advanced methods to recycle waste matter such as ammonia, which can be further used as a fuel and a precursor of numerous value-added chemicals. Here, we review methods for the recovery of ammonia from wastewater with emphasis on biological and physicochemical techniques, and their applications. Biological techniques involve nitrification, denitrification, and anammox processes and the use of membrane bioreactors. Physicochemical techniques comprise adsorption, membrane filtration, ion exchange, chemical precipitation, ammonia stripping, electrochemical oxidation, photocatalytic oxidation, bioelectrochemical systems, and membrane hybrid systems. We found that nitrification and anammox processes in membrane bioreactors stand out for their cost-effectiveness, reduced sludge production, and energy efficiency. The use of struvite precipitation is an efficient, environmentally friendly, and recyclable method for ammonia removal. Membrane hybrid systems are promising for ammonia recovery, nutrient concentration, and wastewater treatment, with applications in fertilizer production and water purification. Overall, nitrogen removal ranges from 28 to 100%, and nitrogen recovery ranges from 9 to 100%.

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从废水中回收氨的策略：综述

循环经济要求采用先进的方法回收氨等废料，氨可进一步用作燃料和多种高附加值化学品的前体。在此，我们回顾了从废水中回收氨的方法，重点是生物和物理化学技术及其应用。生物技术包括硝化、反硝化和氨氧化过程以及膜生物反应器的使用。物理化学技术包括吸附、膜过滤、离子交换、化学沉淀、氨剥离、电化学氧化、光催化氧化、生物电化学系统和膜混合系统。我们发现，膜生物反应器中的硝化和氨氧化过程在成本效益、减少污泥产生和能源效率方面表现突出。使用石灰沉淀是一种高效、环保和可回收的除氨方法。膜混合系统在氨回收、营养浓缩和废水处理方面前景广阔，可应用于化肥生产和水净化。总体而言，氮的去除率从 28% 到 100% 不等，氮的回收率从 9% 到 100% 不等。

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来源期刊

Environmental Chemistry Letters 环境科学-工程：环境

CiteScore

32.00

自引率

7.00%

发文量

175

审稿时长

2 months

期刊介绍： Environmental Chemistry Letters explores the intersections of geology, chemistry, physics, and biology. Published articles are of paramount importance to the examination of both natural and engineered environments. The journal features original and review articles of exceptional significance, encompassing topics such as the characterization of natural and impacted environments, the behavior, prevention, treatment, and control of mineral, organic, and radioactive pollutants. It also delves into interfacial studies involving diverse media like soil, sediment, water, air, organisms, and food. Additionally, the journal covers green chemistry, environmentally friendly synthetic pathways, alternative fuels, ecotoxicology, risk assessment, environmental processes and modeling, environmental technologies, remediation and control, and environmental analytical chemistry using biomolecular tools and tracers.