Competitive adsorption of heavy metals in a quaternary solution by sugarcane bagasse – LDPE hybrid biochar: equilibrium isotherm and kinetics modelling

IF 1 Q4 ENGINEERING, CHEMICAL Chemical Product and Process Modeling Pub Date : 2022-04-08 DOI:10.1515/cppm-2021-0056
Joshua O. Ighalo, Samuel Ogunniyi, A. Adeniyi, Chinenye Adaobi Igwegbe, Saheed Kayode Sanusi, C. A. Adeyanju
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引用次数: 6

Abstract

Abstract Sugarcane is a notable crop grown in the tropical region of the world. It is an abundant waste material of the sugar industry which is a low cost and low combustion fuel thus the bagasse can be exploited to manufacture adsorbents for water treatment. Because the presence of contaminants in polluted water is not uniform, pollutant species compete for active sites during the adsorption process. Investigation of the competitive adsorption of Zn(II), Cu(II), Pb(II), and Fe(II) in a quaternary solution using hybrid biochar developed from sugarcane bagasse (SCB) mixed Low-Density Polyethylene (LDPE) and pure SCB biochar is the main aim of this study. The biochar was developed using the retort carbonisation process and characterised via SEM (Scanning Electron Microscopy), BET (Branueur Emmett Teller) analysis, and FTIR (Fourier Transform Infrared Spectroscopy). Both biochar species mixture possessed some orbicular properties with mesoporous heterogeneous superficial morphology. The biomass biochar and hybrid biochar specific surface area are 533.6 m2/g and 510.5 m2/g respectively. For the two used adsorbents, >99% removal efficiency was recorded over the sphere for dosage investigation. Thus, this implies they are capable of removing heavy metals from the aqueous solution simulated. The Langmuir isotherm fitted best in each domain however there was an exception for Pb(II) ions in biomass biochar with the experimental adsorption capacity of ∼ 22 mg/g for the HMs. Based on the correlation coefficient (R 2); the experimental data fitted the pseudo-first-order kinetic model well having a correlation coefficient value of greater than 0.9. The mechanism of adsorption for the HMs was chemisorption. This study has a three-pronged benefit of water treatment, resource conservation, and solid waste utilisation.
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甘蔗渣-LDPE杂化生物炭对季铵溶液中重金属的竞争吸附:平衡等温线和动力学模型
摘要甘蔗是生长在世界热带地区的一种著名作物。它是制糖工业中丰富的废物,是一种低成本、低燃烧的燃料,因此可以利用蔗渣制造用于水处理的吸附剂。由于污染水中污染物的存在不均匀,污染物物种在吸附过程中争夺活性位点。本研究的主要目的是利用甘蔗渣(SCB)混合低密度聚乙烯(LDPE)和纯SCB生物炭开发的混合生物炭在季铵溶液中竞争吸附Zn(II)、Cu(II),Pb(II)和Fe(II)。使用干馏碳酸化工艺开发生物炭,并通过SEM(扫描电子显微镜)、BET(Branueur-Emmett-Teller)分析和FTIR(傅里叶变换红外光谱)进行表征。两种生物炭的混合物都具有一定的圆形性质,具有介孔的非均匀表面形态。生物质生物炭和杂交生物炭的比表面积分别为533.6m2/g和510.5m2/g。对于两种使用的吸附剂,在整个球体上记录了>99%的去除效率,用于剂量研究。因此,这意味着它们能够从模拟的水溶液中去除重金属。Langmuir等温线在每个领域都拟合得最好,但生物质生物炭中的Pb(II)离子除外,HMs的实验吸附能力为~22 mg/g。基于相关系数(R2);实验数据很好地拟合了相关系数值大于0.9的伪一阶动力学模型。HMs的吸附机理是化学吸附。这项研究具有水处理、资源保护和固体废物利用三方面的好处。
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来源期刊
Chemical Product and Process Modeling
Chemical Product and Process Modeling ENGINEERING, CHEMICAL-
CiteScore
2.10
自引率
11.10%
发文量
27
期刊介绍: Chemical Product and Process Modeling (CPPM) is a quarterly journal that publishes theoretical and applied research on product and process design modeling, simulation and optimization. Thanks to its international editorial board, the journal assembles the best papers from around the world on to cover the gap between product and process. The journal brings together chemical and process engineering researchers, practitioners, and software developers in a new forum for the international modeling and simulation community. Topics: equation oriented and modular simulation optimization technology for process and materials design, new modeling techniques shortcut modeling and design approaches performance of commercial and in-house simulation and optimization tools challenges faced in industrial product and process simulation and optimization computational fluid dynamics environmental process, food and pharmaceutical modeling topics drawn from the substantial areas of overlap between modeling and mathematics applied to chemical products and processes.
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