The effects of ultrasound and electrocoagulation on removal of manganese from wastewater

IF 0.7 Q3 ENGINEERING, MULTIDISCIPLINARY Engineering Review Pub Date : 2022-01-01 DOI:10.30765/er.1734

H. Posavčić, D. Vouk, I. Halkijevic

引用次数: 3

Abstract

In this paper the effect of ultrasound and electrocoagulation on the removal of manganese from synthetic wastewater was investigated. It was shown that 20 kHz ultrasound alone is not very efficient for manganese removal, but it enhances the efficiency of electrocoagulation. It was also shown that settling has a great effect on the electrocoagulation process because it stabilizes the flocs. A total of four laboratory-scale experiments were conducted, and the optimal experiment included 10 minutes of ultrasound and 10 minutes of electrocoagulation with iron electrodes. Under these conditions, 89.0 % of the manganese was removed with an operating cost of 0.13 EUR/mg Mn. Adding the cost of replacing the immersed ultrasonic probe, the total operating cost increased 3000-fold, making the immersed ultrasonic probe method unviable for large-scale application.

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超声和电絮凝法去除废水中锰的影响

研究了超声和电絮凝对合成废水中锰的去除效果。结果表明，单独使用20 kHz超声去除锰的效率不高，但可以提高电絮凝的效率。实验还表明，沉降对电凝过程有很大的影响，因为它可以稳定絮凝体。共进行了4次实验室规模的实验，最佳实验为10分钟超声和10分钟铁电极电凝。在此条件下，锰的去除率为89.0%，运行成本为0.13欧元/毫克锰。加上更换浸入式超声探头的成本，总运行成本增加了3000倍，使得浸入式超声探头法无法大规模应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Engineering Review ENGINEERING, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

0.00%

发文量

期刊介绍： Engineering Review is an international journal designed to foster the exchange of ideas and transfer of knowledge between scientists and engineers involved in various engineering sciences that deal with investigations related to design, materials, technology, maintenance and manufacturing processes. It is not limited to the specific details of science and engineering but is instead devoted to a very wide range of subfields in the engineering sciences. It provides an appropriate resort for publishing the papers covering prior applications – based on the research topics comprising the entire engineering spectrum. Topics of particular interest thus include: mechanical engineering, naval architecture and marine engineering, fundamental engineering sciences, electrical engineering, computer sciences and civil engineering. Manuscripts addressing other issues may also be considered if they relate to engineering oriented subjects. The contributions, which may be analytical, numerical or experimental, should be of significance to the progress of mentioned topics. Papers that are merely illustrations of established principles or procedures generally will not be accepted. Occasionally, the magazine is ready to publish high-quality-selected papers from the conference after being renovated, expanded and written in accordance with the rules of the magazine. The high standard of excellence for any of published papers will be ensured by peer-review procedure. The journal takes into consideration only original scientific papers.