EVALUATING THE EFFICIENCY OF A VEGETAL COAGULANT IN THE TREATMENT OF INDUSTRIAL EFFLUENTS

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Soares, PR (Author) Other; Duarte, FT (Author) Other; Freitas, OM (Author) Other; Delerue Matos, C (Author) Other; Figueiredo, SA (Author) Other; Rui Boaventura (Author) FEUP

Journal

Title: Fresenius Environmental Bulletin

Vol. 21 No. 8

Pages: 2413-2418

ISSN: 1018-4619

Publisher: Technische Universitat Munchen

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Scientific classification

FOS: Engineering and technology > Environmental engineering

CORDIS: Technological sciences > Technology > Environmental technology

Other information

Authenticus ID: P-002-F62

Abstract (EN): The present work aims at evaluating the efficiency of an organic polymer from vegetal source used as coagulant for treating different types of industrial effluents. This coagulant (Flox-QT) is obtained from the Black Acacia (Acacia mearnsii). The effluents studied were produced in petrochemical, leather, cork stoppers, metalworking, olive oil, glue, paint (printing), textile and paper industries. The parameters analyzed in the effluents before and after treatment were selected according to the type of wastewater and included pH, conductivity, apparent colour, turbidity, total suspended solids (TSS), chemical oxygen demand (COD) and some metals. The coagulant proved to be efficient for almost all effluents tested. The best results were obtained for the paper industry wastewater, with 91% removal of chemical oxygen demand and 95% of total suspended solids removal. The estimated cost of this treatment would be only 0.24 Euro per cubic meter of treated effluent, only regarding the price of the coagulant and the required dosage. The use of this coagulant is also adequate for the valorisation of the sludge obtained, which in this case could be recycled for paper production.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6