Open AccessRESPONSE SURFACE METHODOLOGY AND DESIRABILITY FUNCTION AS STATISTICAL TOOLS IN THE OPTIMIZATION OF ELECTROCOAGULATION PROCESS IN SURFACE WATER
Author(s) -
Efraim Lázaro Reis,
Maria Paulina Mendonza Combatt,
Karina Esther Vasquez Sanjuan,
Antônio Augusto Neves,
Regina Célia Santos Mendonça
Publication year - 2020
Publication title -
the journal of engineering and exact sciences
Language(s) - English
Resource type - Journals
ISSN - 2527-1075
DOI - 10.18540/jcecvl6iss2pp0152-0163
Subject(s) - electrocoagulation , turbidity , response surface methodology , central composite design , environmental science , pulp and paper industry , process (computing) , process engineering , organoleptic , intensity (physics) , environmental engineering , computer science , chemistry , chromatography , engineering , food science , optics , oceanography , physics , geology , operating system
The electrocoagulation for water clarification for purification have been studied as alternative to the processes of the water treatment. This study aimed to model and to optimize this process for types of water with different turbidity conditions; considering the current intensity, electrolysis time and initial pH on apparent color removal, chemical oxygen demand and surface water turbidity. Electrocoagulation tests were make aluminum electrodes. The optimal operating conditions and models based on the response surface methodology were obtained with central composite design. In order to comply with the esthetic / organoleptic standard stipulated for this stage of the process, the characterization of the three types of water studied must have color < 15 uH, COD < 18 mg L-1 O2 and turbidity < 5 NTU). The correlation between the analyzed answers allows finding specific conditions of the parameters, assisting in the determination of safe work points in the operation of clarification.