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

IF 1.3 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Ethiopia 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

Bulletin of the Chemical Society of Ethiopia 化学-化学综合

CiteScore

2.20

自引率

8.30%

发文量

113

审稿时长

6-12 weeks

期刊介绍： The Bulletin of the Chemical Society of Ethiopia (BCSE) is a triannual publication of the Chemical Society of Ethiopia. The BCSE is an open access and peer reviewed journal. The BCSE invites contributions in any field of basic and applied chemistry.