The use of biochar and pyrolysed materials to improve water quality through microcystin sorption separation
Frišták, Vladimír (Trnava University in Trnava. Department of Chemistry (Slovakia))
Bell, Stephen Mackenzie (Universitat Autònoma de Barcelona. Institut de Ciència i Tecnologia Ambientals)
Laughinghouse, H. Dail (University of Florida. Fort Lauderdale Research and Education Center. Agronomy Department (USA))

Fecha:	2020
Resumen:	Harmful algal blooms have increased globally with warming of aquatic environments and increased eutrophication. Proliferation of cyanobacteria (blue-green algae) and the subsequent flux of toxic extracellular microcystins present threats to public and ecosystem health and challenges for remediation and management. Although methods exist, there is currently a need for more environmentally friendly and economically and technologically feasible sorbents. Biochar has been proposed in this regard because of its high porosity, chemical stability, and notable sorption efficiency for removing of cyanotoxins. In light of worsening cyanobacterial blooms and recent research advances, this review provides a timely assessment of microcystin removal strategies focusing on the most pertinent chemical and physical sorbent properties responsible for effective removal of various pollutants from wastewater, liquid wastes, and aqueous solutions. The pyrolysis process is then evaluated for the first time as a method for sorbent production for microcystin removal, considering the suitability and sorption efficiencies of pyrolysed materials and biochar. Inefficiencies and high costs of conventional methods can be avoided through the use of pyrolysis. The significant potential of biochar for microcystin removal is determined by feedstock type, pyrolysis conditions, and the physiochemical properties produced. This review informs future research and development of pyrolysed materials for the treatment of microcystin contaminated aquatic environments.
Nota:	Unidad de excelencia María de Maeztu CEX2019-000940-M
Derechos:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Lengua:	Anglès
Documento:	Article ; recerca ; Versió publicada
Materia:	Biochar ; Microcystin ; Separation ; Water quality ; Cyanobacteria ; Algal bloom
Publicado en:	Water, Vol. 12, Issue 10 (October 2020) , art. 2871, ISSN 2073-4441

DOI: 10.3390/w12102871

19 p, 1.9 MB

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