Efficient removal of methylene blue dye from aqueous solution using a new biosorbent derived from Ensete ventricosum (Enset)

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-11-29 DOI:10.4314/bcse.v38i1.6

Belete Tewabe Gebeyehu, Daniel Manaye Kabtamu, Temesgen Alehegne Tasew

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Abstract

In this study, kocho was prepared from pseudostem and corm of Ensete ventricosum (enset).The behaviors of kocho were examined by using FESEM, TGA, XRD and FTIR spectroscopy. The biosorption potential of kocho, a possible low-cost new biosorbent for the efficient removal of MB dye from wastewater was investigated. Biosorption experiments were carried out in batch mode to study the effects of biosorbent dosages (0.025-0.2 g), pH (2–10), initial concentrations of MB (10 to 100 mg/L) and contact time (10 to 120 min).The highest removal efficiency of methylene blue dye (94.2%) was recorded at optimum experimental conditions. Following the removal study, it was determined that the pseudo-second order kinetics (R2 = 0.997) and Langmuir isothermal (R 2= 0.996) models may well describe the MB dye biosorption process. Furthermore, this newly developed biosorbent was fairly recyclable up to five cycles without significant loss of re-adsorption efficiency (around 9.6% loss) between 1st and 5th cycle. Thus, the findings of this study revealed that a new kocho biosorbent derived from Ensete ventricosum can be used as a promising low-cost, environmentally friendly and efficient biosorbent for the rapid removal of MB from aqueous solutions. KEY WORDS: Kocho, Ensete ventricosum, Biosorption, Methylene blue, Kinetics, Isothermal Bull. Chem. Soc. Ethiop. 2024, 38(1), 69-84. DOI: https://dx.doi.org/10.4314/bcse.v38i1.6

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利用一种从Ensete ventricosum（恩塞特）中提取的新型生物吸附剂高效去除水溶液中的亚甲基蓝染料

本研究利用文竹（Ensete ventricosum）的假茎和球茎制备了 kocho，并使用 FESEM、TGA、XRD 和傅立叶变换红外光谱对 kocho 的行为进行了检测。研究了 kocho 的生物吸附潜力，它可能是一种高效去除废水中甲基溴染料的低成本新型生物吸附剂。生物吸附实验以批处理模式进行，研究了生物吸附剂用量（0.025-0.2 克）、pH 值（2-10）、甲基溴初始浓度（10-100 毫克/升）和接触时间（10-120 分钟）的影响。去除研究表明，伪二阶动力学模型（R2=0.997）和朗缪尔等温模型（R 2=0.996）可以很好地描述甲基溴染料的生物吸附过程。此外，这种新开发的生物吸附剂可循环使用长达五个周期，且在第一至第五周期之间没有明显的再吸附效率损失（约 9.6%）。因此，这项研究的结果表明，一种新的 Kocho 生物吸附剂来自于 Ensete ventricosum，可作为一种低成本、环保和高效的生物吸附剂，用于快速去除水溶液中的甲基溴。关键词：Kocho、Ensete ventricosum、生物吸附、亚甲蓝、动力学、等温 Bull.Chem.Soc.2024, 38(1), 69-84.DOI: https://dx.doi.org/10.4314/bcse.v38i1.6

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.