Evaluation of technology potential of Aloe arborescens biopolymer in galvanic effluent treatment

Evaluation of technology potential of Aloe arborescens biopolymer in galvanic effluent treatment

Biopolymers have the ability to form gels that can be used in coagulation/flocculation processes. For this reason, the present work evaluated the application of the Aloe arborescens gel as a biopolymer in the treatment of the effluent generated in galvanic processes. The centesimal, thermogravimetri...

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Bibliographic Details
Published in:Water science and technology Vol. 2017; no. 1; pp. 48 - 57
Main Authors: da Luz, Tayla Gabriela, Sales, Jr, Valber, da Rocha, Raquel Dalla Costa
Format: Journal Article
Language:English
Published: England IWA Publishing 01-04-2018
Subjects:
Aloe
Aloe arborescens
Aluminium
Aluminum
Biopolymers
Chemical engineering
Chemical oxygen demand
Chromium
Confidence intervals
Dissolved solids
Effluent treatment
Effluents
Evaluation
Flocculation
Food
Fourier transforms
Functional groups
Gels
Legislation
Metals
Polymers
Profiles
Removal
Suspended particulate matter
Suspended solids
Technology assessment
Variance analysis
Wastewater treatment
Water treatment
Brazil
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Summary:Biopolymers have the ability to form gels that can be used in coagulation/flocculation processes. For this reason, the present work evaluated the application of the Aloe arborescens gel as a biopolymer in the treatment of the effluent generated in galvanic processes. The centesimal, thermogravimetric and texture profiles, as well as the functional groups and the biopolymer's performance in the treatment was analyzed. The performance results were evaluated by central composite rotational design 2 . The variables biopolymer concentration, aluminum sulphate and initial pH of the effluent were significant at the confidence level of 95%. The Cr(VI) removal efficiency ranged from 6.37% to 37.74%; significant reductions in dissolved solids (89.80% to 94.13%) and suspended solids (71.06% to 90.00%) were also observed. The treated effluent still presents parameters above the regulatory limits stated by the legislation, therefore, the biopolymer could be used as initial treatment for solids removal.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2018.082