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Aluminium removal from wastewater by refused beach cast seaweed. Equilibrium and dynamic studies

Aluminium removal from wastewater by refused beach cast seaweed. Equilibrium and dynamic studies
Aluminium removal from wastewater by refused beach cast seaweed. Equilibrium and dynamic studies
Aluminium removal has been investigated in synthetic and real wastewaters provided by an aluminium surface treatment plant. Marine algae, obtained as beach cast seaweed (a refuse substance) were used as adsorption material. The influence of pH, metal concentration and time for aluminium elimination was studied by use of synthetic solutions. The optimum pH value was 4.0, which provided a maximum adsorption capacity of 22.5 mg g(-1). The adsorption percentage surpassed 80\% in less than 30 min of contact time. Real solutions from the industrial unit were fully characterized and tested in two different fixed-bed columns. One column was filled with 27.5 g of dried beach cast seaweed. Three cycles of adsorption and two of desorption were carried out. The first cycle (12 mg g(-1) maximum sorption capacity) was enough to reach the maximum adsorption capacity at 15 mL min(-1) flow rate. The second column was packed with 1100 g of seaweed and its behaviour was compared to another column filled with activated charcoal, following both the same experimental procedure. Maximum sorption capacity was 14 mg g(-1) for seaweed, whereas the activated charcoal only reached 1.6 mg g(-1) (flow rate of 250 mL min(-1)).
Aluminium, Seaweed, Column, Wastewater, Biosorption
0304-3894
861-866
Lodeiro, Pablo
f6c1011a-06d0-4095-bc45-2e15e9e492d0
Gudina, Angel
8f5ca37a-be3a-449a-9d47-bd3c675d3b19
Herrero, Luz
e16bc5bd-7f63-465d-b84c-b6bca9adeddf
Herrero, Roberto
083bf72e-e314-4edb-86a0-9ba61f35a816
Sastre de Vicente, Manuel E.
8b7b6889-35e4-45aa-adb7-c8124dad5938
Lodeiro, Pablo
f6c1011a-06d0-4095-bc45-2e15e9e492d0
Gudina, Angel
8f5ca37a-be3a-449a-9d47-bd3c675d3b19
Herrero, Luz
e16bc5bd-7f63-465d-b84c-b6bca9adeddf
Herrero, Roberto
083bf72e-e314-4edb-86a0-9ba61f35a816
Sastre de Vicente, Manuel E.
8b7b6889-35e4-45aa-adb7-c8124dad5938

Lodeiro, Pablo, Gudina, Angel, Herrero, Luz, Herrero, Roberto and Sastre de Vicente, Manuel E. (2010) Aluminium removal from wastewater by refused beach cast seaweed. Equilibrium and dynamic studies. Journal of Hazardous Materials, 178 (1-3), 861-866. (doi:10.1016/j.jhazmat.2010.02.017).

Record type: Article

Abstract

Aluminium removal has been investigated in synthetic and real wastewaters provided by an aluminium surface treatment plant. Marine algae, obtained as beach cast seaweed (a refuse substance) were used as adsorption material. The influence of pH, metal concentration and time for aluminium elimination was studied by use of synthetic solutions. The optimum pH value was 4.0, which provided a maximum adsorption capacity of 22.5 mg g(-1). The adsorption percentage surpassed 80\% in less than 30 min of contact time. Real solutions from the industrial unit were fully characterized and tested in two different fixed-bed columns. One column was filled with 27.5 g of dried beach cast seaweed. Three cycles of adsorption and two of desorption were carried out. The first cycle (12 mg g(-1) maximum sorption capacity) was enough to reach the maximum adsorption capacity at 15 mL min(-1) flow rate. The second column was packed with 1100 g of seaweed and its behaviour was compared to another column filled with activated charcoal, following both the same experimental procedure. Maximum sorption capacity was 14 mg g(-1) for seaweed, whereas the activated charcoal only reached 1.6 mg g(-1) (flow rate of 250 mL min(-1)).

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More information

Published date: 15 June 2010
Keywords: Aluminium, Seaweed, Column, Wastewater, Biosorption
Organisations: Ocean Biochemistry & Ecosystems

Identifiers

Local EPrints ID: 355090
URI: http://eprints.soton.ac.uk/id/eprint/355090
ISSN: 0304-3894
PURE UUID: eb535741-a573-4421-8f47-961baf345d57

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Date deposited: 30 Jul 2013 08:40
Last modified: 14 Mar 2024 14:28

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Contributors

Author: Pablo Lodeiro
Author: Angel Gudina
Author: Luz Herrero
Author: Roberto Herrero
Author: Manuel E. Sastre de Vicente

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