Optimization of the Effect of Temperature and Bed Height on Cr (VI) Bioadsorption in Continuous System

IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY

Revista Facultad De Ingenieria-universidad De Antioquia Pub Date : 2020-05-13 DOI:10.19053/01211129.v29.n54.2020.10477

Á. Villabona-Ortíz, C. Tejada-Tovar, Erika B. Ruiz-Paternina, Jesús David Frías-González, Gerlyn David Blanco-García

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引用次数: 8

Abstract

In the present paper, the residues of the plantain starch extraction process are proposed as an adsorbent to remove Cr (VI) in a continuous fixed bed-system, varying the temperature in 33, 40, 55, 70 y 76 °C and bed height in the range of 15.5, 30, 65, 100, 114.5 mm. The adsorbent material was characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and X-ray Diffraction Analysis (XRD). The Cr (VI) solution at 100 ppm had contact with the column by gravity, with a flow rate of 0.75 mL/s at the different working conditions. At the end of the process, the residual concentration of the metal was measured by UV-Vis spectroscopy using the standard method for the determination of Cr (VI) in water ASTM D1687-17. From the results, it was established that the bioadsorbent has the presence of hydroxyl, carboxyl and methyl functional groups and that the adsorption process is controlled by electrostatic interactions; the variables evaluated had a significant influence on the process because applying the RSM methodology it was observed that the 1 M. Sc. Universidad de Cartagena (Cartagena-Bolívar, Colombia). avillabonao@unicartagena.edu.co. ORCID: 0000-0001-8488-1076 2 M. Sc. Universidad de Cartagena (Cartagena-Bolívar, Colombia). ctejadat@unicartagena.edu.co. ORCID: 0000-0002-2323-1544 3 Universidad de Cartagena (Cartagena-Bolívar, Colombia). 4 Universidad de Cartagena (Cartagena-Bolívar, Colombia). jfriasg1@unicartagena.edu.co. 5 Universidad de Cartagena (Cartagena-Bolívar, Colombia). Optimization of the Effect of Temperature and Bed Height on Cr (VI) Bioadsorption in Continuous System Revista Facultad de Ingeniería (Rev. Fac. Ing.) Vol. 29 (54), e10477. 2020. Tunja-Boyacá, Colombia. L-ISSN: 0121-1129, e-ISSN: 2357-5328, DOI: https://doi.org/10.19053/01211129.v29.n54.2020.10477 optimal operating conditions are 81.49 mm of bed height and temperature of 68 oC. Based on the behavior of the rupture curve, it was found that the bio-material has the potential to be used as a filler in an adsorption column with the purpose of remove Cr (VI).

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温度和床高对连续系统中Cr (VI)生物吸附影响的优化研究

本文以车前草淀粉萃取过程的残渣为吸附剂，在连续固定床系统中，温度在33、40、55、70和76℃范围内变化，床高在15.5、30、65、100和114.5 mm范围内变化。采用傅里叶变换红外光谱(FTIR)、扫描电镜(SEM)和x射线衍射分析(XRD)对吸附材料进行了表征。100 ppm的Cr (VI)溶液通过重力与色谱柱接触，不同工况下的流速为0.75 mL/s。工艺结束时，采用ASTM D1687-17测定水中Cr (VI)的标准方法，用紫外可见光谱法测定金属残留浓度。结果表明，该生物吸附剂存在羟基、羧基和甲基官能团，吸附过程受静电相互作用控制;所评估的变量对这一过程有重大影响，因为应用RSM方法观察到，卡塔赫纳大学的1个理学硕士(Cartagena-Bolívar，哥伦比亚)。avillabonao@unicartagena.edu.co。2 .卡塔赫纳大学理学硕士(Cartagena-Bolívar，哥伦比亚)。ctejadat@unicartagena.edu.co。3哥伦比亚卡塔赫纳大学(Cartagena-Bolívar)。4卡塔赫纳大学(Cartagena-Bolívar，哥伦比亚)。jfriasg1@unicartagena.edu.co。5卡塔赫纳大学(Cartagena-Bolívar，哥伦比亚)。温度和床层高度对连续系统中Cr (VI)生物吸附影响的优化[j]。荷兰国际集团(Ing))。第29卷(54)，e10477。2020. Tunja-Boyaca,哥伦比亚。L-ISSN: 0121-1129, e-ISSN: 2357-5328, DOI: https://doi.org/10.19053/01211129.v29.n54.2020.10477最佳操作条件为床高81.49 mm，温度68℃。根据破裂曲线的行为，发现该生物材料具有作为吸附柱填料去除Cr (VI)的潜力。

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来源期刊

Revista Facultad De Ingenieria-universidad De Antioquia 工程技术-工程：综合

CiteScore

2.00

自引率

0.00%

发文量

审稿时长

2 months

期刊介绍： Revista Facultad de Ingenieria started in 1984 and is a publication of the School of Engineering at the University of Antioquia. The main objective of the journal is to promote and stimulate the publishing of national and international scientific research results. The journal publishes original articles, resulting from scientific research, experimental and or simulation studies in engineering sciences, technology, and similar disciplines (Electronics, Telecommunications, Bioengineering, Biotechnology, Electrical, Computer Science, Mechanical, Chemical, Environmental, Materials, Sanitary, Civil and Industrial Engineering). In exceptional cases, the journal will publish insightful articles related to current important subjects, or revision articles representing a significant contribution to the contextualization of the state of the art in a known relevant topic. Case reports will only be published when those cases are related to studies in which the validity of a methodology is being proven for the first time, or when a significant contribution to the knowledge of an unexplored system can be proven. All published articles have undergone a peer review process, carried out by experts recognized for their knowledge and contributions to the relevant field. To adapt the Journal to international standards and to promote the visibility of the published articles; and therefore, to have a greater impact in the global academic community, after November 1st 2013, the journal will accept only manuscripts written in English for reviewing and publication. Revista Facultad de Ingeniería –redin is entirely financed by University of Antioquia Since 2015, every article accepted for publication in the journal is assigned a DOI number.