Redirigiendo al acceso original de articulo en 19 segundos...
Inicio  /  ChemEngineering  /  Vol: 7 Par: 4 (2023)  /  Artículo
ARTÍCULO
TITULO

Using the Response Surface Methodology to Treat Tannery Wastewater with the Bicarbonate-Peroxide System

Néstor A. Urbina-Suarez    
Cristian J. Salcedo-Pabón    
German L. López-Barrera    
Janet B. García-Martínez    
Andrés F. Barajas-Solano and Fiderman Machuca-Martínez    

Resumen

A bicarbonate-peroxide (BAP) system was evaluated to improve the quality of industrial tannery wastewater using an I-optimal experimental design with four variables (temperature, initial pH, bicarbonate, and H2O2 concentration). The response variables were COD removal, ammonia nitrogen removal, and nitrate concentration. The most critical variables were optimized using a The process was carried out in 500 mL reactors, the operational volume of 250 mL, and the agitation was at 550 rpm. A new I-optimal reaction surface design at two levels (bicarbonate concentration 0.01?0.3 mol/L and H2O2 0.05?0.35 mol/L) was used to obtain the optimal data of the experimental design. Optimal conditions were validated by one-way ANOVA statistical analysis using Prism software. Temperatures above 50 °C promote the efficiency of the BAP system, and slightly acidic initial pHs allow stabilization of the system upon inclusion of bicarbonate and peroxide in the concentration of bicarbonate, which is critical for the reaction with peroxide and formation of reactive oxygen species. With the validated optimal data, removal percentages above 78% were achieved for nitrites, ammonia nitrogen, chromium, TSS, BOD, conductivity, chromium, and chlorides; for COD and TOC, removal percentages were above 45%, these results being equal and even higher than other AOPs implemented for this type of water.

 Artículos similares

       
 
Fauzan Ahmad Sayed, Nugraha Bintang Wirawan, Ahmad Yudi     Pág. 10 - 19
The high-rise building of steel structures requires strengthening system so that buildings are capable of carrying earthquake loads that may occur. Strengthening of steel structure building can be applied by providing stiffness of the structure in the fo... ver más

 
Houaria ABED, Lynda ZAOUI     Pág. 97 - 113
Recent years have witnessed great interest in developing methods for content-based image retrieval (CBIR). Generally, the image search results which are returned by an image search engine contain multiple topics, and organizing the results into different... ver más

 
Jocelyn Sabatier and Christophe Farges    
This paper proposes algorithms to model fractional (dynamical) behaviors using non-singular rational kernels whose interest is first demonstrated on a pure power law function. Two algorithms are then proposed to find a non-singular rational kernel that a... ver más
Revista: Algorithms

 
Ziqiang Hu, Lei Wei, Lin Yang, Yansong Wang and Yuanpeng Fan    
Structural vibration has always been a major concern in the engineering field. A dynamic vibration absorber in the form of contacts with adjustable stiffness (CDVA) offers effective vibration suppression and can improve conventional dynamic vibration abs... ver más
Revista: Aerospace

 
M. Domaneschi, R. Cucuzza, L. Sardone, S. Londoño Lopez, M. Movahedi and G. C. Marano    
Random vibration analysis is a mathematical tool that offers great advantages in predicting the mechanical response of structural systems subjected to external dynamic loads whose nature is intrinsically stochastic, as in cases of sea waves, wind pressur... ver más
Revista: Computation