Coffee spent supported Fe-Al-Zr composite: Synthesis, characterization and its adsorptive dye removal from tannery wastewater

IF 1.3 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Bulletin of the Chemical Society of Ethiopia Pub Date : 2023-05-12 DOI:10.4314/bcse.v37i4.6

Tigist Kebede, Abi M. Taddesse, A. Hussen

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引用次数: 0

Abstract

ABSTRACT. This work was conducted to evaluate the adsorption performance of coffee spent modified Fe-Al-Zr composite. The Al2O3/Fe3O4/ZrO2 ternary oxide system was efficiently synthesized from the respective salt precursors by a two-step co-precipitation method under nitrogen atmosphere in basic condition. XRD, SEM-EDX, FTIR and ICP-OES were used to characterize the features of the adsorbents. The pH point of zero charge of the selected adsorbent was also determined. Batch adsorption experiment was conducted under different conditions such as contact time, initial concentration of dye, pH, sorbent dosage and agitation speed. The Langmuir and Freundlich, isotherms were tested to examine the adsorption behavior. The equilibrium data was well fitted to Langmuir isotherm model. The maximum adsorption capacity (qo) was 8.4 mg/g for acidic brown 75 dyes. The kinetic data correlated (R2 = 0.999) well with the pseudo second order kinetic model. To evaluate the practical applicability of the coffee spent supported nanocomposite adsorbent to real samples, effluent was collected from Batu Leather Industry. The result demonstrated 95.7% (10 mg/L) removal efficiency of the dye by the as-obtained composite indicating its potential application for environmental application. KEY WORDS: Coffee spent, Nanocomposite, Sorption, Textile dye, Immobilization Bull. Chem. Soc. Ethiop. 2023, 37(4), 875-889. DOI: https://dx.doi.org/10.4314/bcse.v37i4.6

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咖啡渣负载Fe-Al-Zr复合材料的合成、表征及其对制革废水中染料的吸附去除

摘要。本工作旨在评价咖啡渣改性Fe-Al-Zr复合材料的吸附性能。采用两步共沉淀法，在氮气氛和碱性条件下，由相应的盐前驱体有效地合成了Al2O3/Fe3O4/ZrO2三元氧化物体系。利用XRD、SEM-EDX、FTIR和ICP-OES对吸附剂进行了表征。还测定了所选吸附剂的零电荷pH点。在接触时间、染料初始浓度、pH、吸附剂用量和搅拌速度等不同条件下进行了分批吸附实验。用Langmuir和Freundlich等温线考察了吸附行为。平衡数据符合Langmuir等温线模型。酸性棕75染料的最大吸附量（qo）为8.4mg/g。动力学数据与拟二阶动力学模型具有良好的相关性（R2=0.999）。为了评估咖啡废负载纳米复合吸附剂在实际样品中的实用性，收集了巴图皮革工业的废水。结果表明，所获得的复合物对染料的去除率为95.7%（10mg/L），表明其在环境应用中的潜在应用。关键词：废咖啡，纳米复合材料，吸附，纺织染料，固定化公牛。化学。Soc.Ethiop。2023,37（4），875-889.DOI:https://dx.doi.org/10.4314/bcse.v37i4.6

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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.