Optimization of Preparation Conditions for Activated Carbons From Polyethylene Terephthalate Using Response Surface Methodology

Ayyalusamy, Sureshkumar; Mishra, Susmita

doi:10.1590/0104-6632.20180353s20160724

Cited by 18 publications

(3 citation statements)

References 33 publications

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“…CCD was used in this study to assess the impact of reaction temperature ( T ) and residence time ( t ) on the fuel characteristics. RSM/CCD is suitable for the optimization of process parameters and the analysis of the interaction between these parameters. − The structure and design matrix of the HTC experiments are shown in Table with 11 experimental runs. There are four factorial points, four axial points, and three center points, which were repeated five times to obtain an accurate estimate of the experimental error and data reproducibility.…”

Section: Methodsmentioning

confidence: 99%

Hydrothermal Carbonization of Searsia lancea Trees Grown on Mine Drainage: Processing Variables and Product Composition

et al. 2021

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A 12-year-old planted woodlands Searsia lancea tree, grown on acid mine drainage for phytoremediation of polluted groundwater on gold and uranium mines in South Africa, was used in this research. The research describes the fuel-related characteristics and the influence of different operating conditions on the hydrothermal carbonization of the biomass and the combustion profiles of discard coal/biomass hydrochar pellets. The raw biomass was treated at temperatures ranging from 200−280 °C and residence time of 30−90 min. The hydrochar produced at 280 °C and residence time of 90 min had the highest calorific value of 29.71 MJ/kg compared to 17.23 and 16.73 MJ/kg obtained from the raw biomass and discard coal, respectively. Regression equations developed using the central composite design (CCD) indicated that the values obtained experimentally agree with the predicted values from the models for mass yield, calorific value, and ash content. The reactivity tests showed that the 100% hydrochar pellet had the highest reactivity and lowest ignition and burnout temperature compared to biocoal pellets and discard coal. The process water contained relatively low concentrations of major elements, and the study had shown that different high-grade biocoal pellets can be produced from the S. lancea tree.

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Section: Methodsmentioning

confidence: 99%

Hydrothermal Carbonization of Searsia lancea Trees Grown on Mine Drainage: Processing Variables and Product Composition

et al. 2021

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“…This may be attributed to the uniform micropores developed by the carbon-water reaction. However, with the increase of activation temperature, the micropores were enlarged to mesopores and macropores, thereby reducing the adsorption capacity of iodine to some extent (Sureshkumar & Susmita 2018). The iodine adsorption capacity of FRAC initially increased and thereafter declined with the prolongation of activation time, which could be seen from Figure 1(a) and 1(c).…”

Section: D Response Surface Plot Analysismentioning

confidence: 89%

Optimized preparation of activated carbon from furfural residue using response surface methodology and its application for bisphenol S adsorption

Liu

Han

et al. 2021

Water Science and Technology

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Furfural residue (FR), a solid waste, was applied as the precursor to prepare activated carbon by steam activation. The Box-Behnken design (BBD) approach-based response surface methodology (RSM) was utilized to optimize the preparation conditions to evaluate their effects on the performance of activated carbon from furfural residue (FRAC). The optimum preparation conditions of FRAC were found as follows: activation temperature of 922 °C, activation time of 62 min, and the mass ratio of char to H2O of 1:4.5, resulting in 1,501.84 mg/g of iodine adsorption capacity and 1,662.41 m2/g of specific surface area. The FRAC was characterized and then the adsorption performance of BPS on FRAC was investigated. Langmuir and Koble-Corrigan isotherm models were well fitted to the experimental data, and the adsorption kinetics process was perfectly described by the pseudo-second-order model. Thermodynamic parameters showed that the adsorption of BPS was a spontaneous exothermic process. Besides, the regeneration efficiency of FRAC was over 97% after five consecutive cycles. The maximum monolayer adsorption capacity of FRAC for BPS was 3.2848 mmol/g at 298 K, indicating that the FRAC was an excellent adsorbent for the removal of BPS from aqueous solutions.

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“…Após pirolise da matéria-prima de CSA (Figura 2) sob aquecimento até a temperatura de 450°C, o rendimento de carvão adsorvente foi de 28,82%. De acordo com Ayyalusamy & Mishra (2018), a temperatura de pirólise pode alterar drasticamente o rendimento de carvão, sendo um parâmetro para otimização do processo, porém, a temperatura de pirólise escolhida neste trabalho se mostrou favorável no rendimento de carvão adsorvente.…”

Section: Análise Preliminar Da Matéria-prima De Csaunclassified

Propriedades Termodinâmicas De Formação Estimadas Para Ésteres De Biodiesel Usando Software De Química Quântica Gaussian E O Método De Contribuição De Grupo De Constantinou E Gani

Potrich¹,

Amaral²,

Voll³

et al. 2022

Collection: Applied Chemical Engineering

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Direitos para esta edição cedidos à Atena Editora pelos autores. Open access publication by Atena Editora Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição-Não-Comercial-NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores, inclusive não representam necessariamente a posição oficial da Atena Editora. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.Todos os manuscritos foram previamente submetidos à avaliação cega pelos pares, membros do Conselho Editorial desta Editora, tendo sido aprovados para a publicação com base em critérios de neutralidade e imparcialidade acadêmica.A Atena Editora é comprometida em garantir a integridade editorial em todas as etapas do processo de publicação, evitando plágio, dados ou resultados fraudulentos e impedindo que interesses financeiros comprometam os padrões éticos da publicação. Situações suspeitas de má conduta científica serão investigadas sob o mais alto padrão de rigor acadêmico e ético.

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Optimization of Preparation Conditions for Activated Carbons From Polyethylene Terephthalate Using Response Surface Methodology

Cited by 18 publications

References 33 publications

Hydrothermal Carbonization of Searsia lancea Trees Grown on Mine Drainage: Processing Variables and Product Composition

Hydrothermal Carbonization of Searsia lancea Trees Grown on Mine Drainage: Processing Variables and Product Composition

Optimized preparation of activated carbon from furfural residue using response surface methodology and its application for bisphenol S adsorption

Propriedades Termodinâmicas De Formação Estimadas Para Ésteres De Biodiesel Usando Software De Química Quântica Gaussian E O Método De Contribuição De Grupo De Constantinou E Gani

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