Technologies for biological removal and recovery of nitrogen from wastewater

Biotechnology Advances
Shadi RahimiIvan Mijakovic

Abstract

Water contamination is a growing environmental issue. Several harmful effects on human health and the environment are attributed to nitrogen contamination of water sources. Consequently, many countries have strict regulations on nitrogen compound concentrations in wastewater effluents. Wastewater treatment is carried out using energy- and cost-intensive biological processes, which convert nitrogen compounds into innocuous dinitrogen gas. On the other hand, nitrogen is also an essential nutrient. Artificial fertilizers are produced by fixing dinitrogen gas from the atmosphere, in an energy-intensive chemical process. Ideally, we should be able to spend less energy and chemicals to remove nitrogen from wastewater and instead recover a fraction of it for use in fertilizers and similar applications. In this review, we present an overview of various technologies of biological nitrogen removal including nitrification, denitrification, anaerobic ammonium oxidation (anammox), as well as bioelectrochemical systems and microalgal growth for nitrogen recovery. We highlighted the nitrogen removal efficiency of these systems at different temperatures and operating conditions. The advantages, practical challenges, and potential for nitrogen ...Continue Reading

Citations

Feb 13, 2021·Environmental Pollution·Rayane Kunert LangbehnHugo Moreira Soares
Mar 19, 2021·Environmental Science and Pollution Research International·Jing ChengXi Jin
Mar 28, 2021·Bioresource Technology·Lijian LengHuajun Huang
Apr 2, 2021·Chemosphere·Mohd Najibul HasanSaiful Islam
May 9, 2021·The Science of the Total Environment·Gabriela BonassaAirton Kunz
May 21, 2021·Water Environment Research : a Research Publication of the Water Environment Federation·Li ZhangYongzhen Peng
Jun 27, 2021·Environmental Technology·Ayben Polat Bulut, Şükrü Aslan
Aug 5, 2021·The Science of the Total Environment·Carlos R Chan-PachecoGuillermo Quijano
Jul 28, 2021·Journal of Basic Microbiology·Rahul K GoswamiPradeep Verma

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