Eva Carina Tarango-Brito, Anabel Ramos-García, Liliana Ivette Ávila-Córdoba, Carlos Barrera-Díaz
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引用次数: 0
Abstract
Abstract. Dyes are widely used in many industrial operations for a variety of products; however, when wastewater is discharged without a treatment in rivers and lakes, severe environmental impacts are observed. In this work, the results of a solar wastewater treatment are presented. The solar treatment consists in parabolic heater coupled with a solar distiller which contains a ZnO plate that works as photocatalyst. Distilled water presents good characteristics; nevertheless, a residue that contains dye and intermediate products is also obtained. An electrooxidation treatment using boron-doped diamond electrodes (BDD), is applied at the residue as a polishing step. It was observed that wastewater quality improves when using an aqueous solution of pH 2.7 and a current density of 22.2 mA cm-2. Physicochemical test such as COD, and UV-Vis were used to evaluate the wastewater quality. It was found that 40 minutes are required to attain the improvement. This technology is environmental friendly since low energy is required (5 kW h L-1). Resumen. Los colorantes son ampliamente utilizados en la industria para una gran variedad de productos; cuando se descargan aguas residuales con dichos compuestos en ríos o lagos, ocasionan severas afectaciones al medio ambiente. Este trabajo presenta los resultados obtenidos al someter agua sintética a un proceso consistente en un calentador acoplado a un destilador solar que contiene un fotocatalizador. En dicho procedimiento se obtiene agua destilada de buena calidad, sin embargo, también se genera un agua residual concentrada con presencia de colorante y productos intermediarios. A manera de pulimento se aplica la electrooxidación empleando electrodos de diamante dopados con boro. Con las mejores condiciones: pH 2.7 y densidad de corriente de 22.2 mA cm-2, se encuentra que el agua residual presenta una notable mejoría en características fisicoquímicas de DQO y espectroscopia UV-Vis. Se encontró que es necesario un periodo de tiempo de 40 minutos para mejorar las características del agua concentrada, lo cual hace que este proceso sea ambientalmente amigable, ya que requiere la aplicación de poca energía (5kW h L-1).
摘要染料广泛用于许多工业操作的各种产品;然而，当废水未经处理排放到河流和湖泊中时，会产生严重的环境影响。本文介绍了太阳能废水处理的结果。太阳能处理包括抛物面加热器和太阳能蒸馏器，蒸馏器含有作为光催化剂的ZnO板。蒸馏水具有良好的特性;然而，也会得到含有染料和中间产物的残留物。采用掺硼金刚石电极(BDD)对残渣进行电氧化处理，作为抛光步骤。结果表明，在pH为2.7、电流密度为22.2 mA cm-2的条件下，废水水质得到改善。采用COD、UV-Vis等理化指标对废水水质进行评价。结果发现，达到这种改善需要40分钟。该技术是环保的，因为它需要低能量(5kw h L-1)。Resumen。Los colorantes son amamente utilization en la industria para a gran varieties of product;广东的设计人员将废水残留在计算机上，甚至在ríos或lagos中，偶尔或多次影响所有介质环境。Este trabajo提出了许多结果，这些结果表明，在不同的条件下，在不同的条件下，在不同的条件下，在不同的条件下，在不同的条件下，在不同的条件下，在不同的条件下，在不同的条件下，在不同的条件下，在不同的条件下，在不同的条件下，在不同的条件下进行。在这一过程中，我们发现了一种新的方法，即在生产中间商的产品中，我们发现了一种新的产品残留浓度。一种新的方法可以应用在electrooxidación上。实验条件:pH值为2.7 y，浓度为22.2 mA cm-2, pH值为2.7 y, pH值为22.2 mA cm-2, pH值为2.7 y。例如，encontró需要在40分钟的时间内完成一个周期的时间，例如características del agua concentrada，如果需要在40分钟内完成一个周期的时间，则需要在40分钟内完成一个周期的时间，例如características de poca energía (5kW h L-1)。
期刊介绍：
The Journal of the Mexican Chemical Society (J. Mex. Chem. Soc.) is a scientific, blind, peer reviewed, and open access, free of charge publication that covers all areas of chemistry and its sub-disciplines (i.e. medicinal chemistry, natural products, electrochemistry, material science, computational chemistry, organic chemistry, bionirganic chemistry, etc). It is devoted to facilitating the worldwide advancement of our understanding of chemistry. It will primarily publish original contributions of research in all branches of the theory and practice of chemistry in its broadest context as well as critical reviews in active areas of chemical research where the author has published significant contribution. The J. Mex. Chem. Soc. is a quarterly publication which language of submission and publication is English. To be suitable for publication in J. Mex. Chem. Soc., manuscripts must describe novel aspects of chemistry, high quality of results and discussion an excellent bibliographic support, and contribute to the development of the field. Routine or incremental work are not suitable for publication in J. Mex. Chem. Soc. Authors are encouraged to send contributions in electronic form. Our online submission system guides you stepwise through the process of entering your article details and uploading your files.
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