ADSORPTION ISOTHERMS OF CALCIUM ÍONS (Ca+2) FROM HARD WATER IN CELLULOSIC MATERIALS
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Publication Date: | 2016 |
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Format: | Article |
Language: | por |
Source: | Revista de Engenharia Química e Química |
Download full: | https://periodicos.ufv.br/jcec/article/view/2446941602023016132 |
Summary: | Water used in industrial processes requires a special treatment to achieve ahigh level of quality. In this context, the aim of this study was to investigate the use of cellulosic materials for water softening, such as microcrystalline cellulose (101 µm and 500 µm) and bleached Eucalyptus Kraft pulp. Firstly, the kinetic study was made in order to optimize operation parameters and then the adsorption processes were conducted, at three different levels of pH and different concentrations of calcium. The results showed that the pseudo-second order kinetic model had the best correlation coefficient and the Freundlich isotherm model was more appropriate to fit the experimental data, with thehighest adsorption capacity observed at pH 7,0 for all the tested materials. At this pH, the microcrystalline cellulose adsorbed more than the bleached Eucalyptus Kraft pulp. Thus, it could be concluded that the proposed objectives were achieved. |
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ADSORPTION ISOTHERMS OF CALCIUM ÍONS (Ca+2) FROM HARD WATER IN CELLULOSIC MATERIALSISOTERMAS DE ADSORÇÃO DE ÍONS CÁLCIO (Ca+2) EM MATERIAIS CELULÓSICOSHard WaterAdsorptionMicrocrystalline CelluloseBleached Eucalyptus Kraft pulpCalcium ion (Ca 2)Água duraIsotermas de adsorçãoCelulose microcristalinaPolpa Kraft de Eucalyptus branqueadaIons cálcio (Ca 2).Water used in industrial processes requires a special treatment to achieve ahigh level of quality. In this context, the aim of this study was to investigate the use of cellulosic materials for water softening, such as microcrystalline cellulose (101 µm and 500 µm) and bleached Eucalyptus Kraft pulp. Firstly, the kinetic study was made in order to optimize operation parameters and then the adsorption processes were conducted, at three different levels of pH and different concentrations of calcium. The results showed that the pseudo-second order kinetic model had the best correlation coefficient and the Freundlich isotherm model was more appropriate to fit the experimental data, with thehighest adsorption capacity observed at pH 7,0 for all the tested materials. At this pH, the microcrystalline cellulose adsorbed more than the bleached Eucalyptus Kraft pulp. Thus, it could be concluded that the proposed objectives were achieved.A água a ser utilizada em processos industriais demanda um tratamento e qualidade diferenciados. O objetivo desse estudo foi investigar o uso de três materiais celulósicos para abrandamento da água, sendo duas celuloses microcristalinas com granulometrias diferentes (CMC101 e CMC500) e a polpa Kraft de Eucalyptus branqueada. Realizou-se um estudo cinético para a obtenção de parâmetros otimizados, e determinaram-se isotermas de adsorção, utilizando diferentes concentrações de cálcio e assumindo três diferentes níveis de pH. A partir dos resultados, pode-se observar que o modelo cinético de pseudo-segunda ordem apresentou o melhor coeficiente de correlação e o modelo de isoterma Freundilch apresentou melhor ajuste aos dados experimentais, sendo a maior adsorção no nível de pH 7,0 para os três materiais, em que as amostras de CMC adsorveram mais significativamente que a polpa. Conclui-se então que o objetivo foi alcançadoUniversidade Federal de Viçosa - UFV2016-04-28info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/kswpshttps://periodicos.ufv.br/jcec/article/view/244694160202301613210.18540/jcecvl2iss3pp132-145The Journal of Engineering and Exact Sciences; Vol. 2 No. 3 (2016); 132-145The Journal of Engineering and Exact Sciences; Vol. 2 Núm. 3 (2016); 132-145The Journal of Engineering and Exact Sciences; v. 2 n. 3 (2016); 132-1452527-1075reponame:Revista de Engenharia Química e Químicainstname:Universidade Federal de Viçosa (UFV)instacron:UFVporhttps://periodicos.ufv.br/jcec/article/view/2446941602023016132/pdfCopyright (c) 2016 The Journal of Engineering and Exact Sciencesinfo:eu-repo/semantics/openAccessSilva, Brunela Pereira daBotelho, Lorenna AlmeidaNeto, Abelardo Barreto de MendonçaSousa, Rita de Cássia Superbi deBellato, Carlos RobertoSilva, Deusanilde de Jesus2020-09-08T17:30:10Zoai:ojs.periodicos.ufv.br:article/2167Revistahttp://www.seer.ufv.br/seer/rbeq2/index.php/req2/indexONGhttps://periodicos.ufv.br/jcec/oaijcec.journal@ufv.br||req2@ufv.br2446-94162446-9416opendoar:2020-09-08T17:30:10Revista de Engenharia Química e Química - Universidade Federal de Viçosa (UFV)false |
dc.title.none.fl_str_mv |
ADSORPTION ISOTHERMS OF CALCIUM ÍONS (Ca+2) FROM HARD WATER IN CELLULOSIC MATERIALS ISOTERMAS DE ADSORÇÃO DE ÍONS CÁLCIO (Ca+2) EM MATERIAIS CELULÓSICOS |
title |
ADSORPTION ISOTHERMS OF CALCIUM ÍONS (Ca+2) FROM HARD WATER IN CELLULOSIC MATERIALS |
spellingShingle |
ADSORPTION ISOTHERMS OF CALCIUM ÍONS (Ca+2) FROM HARD WATER IN CELLULOSIC MATERIALS Silva, Brunela Pereira da Hard Water Adsorption Microcrystalline Cellulose Bleached Eucalyptus Kraft pulp Calcium ion (Ca 2) Água dura Isotermas de adsorção Celulose microcristalina Polpa Kraft de Eucalyptus branqueada Ions cálcio (Ca 2). |
title_short |
ADSORPTION ISOTHERMS OF CALCIUM ÍONS (Ca+2) FROM HARD WATER IN CELLULOSIC MATERIALS |
title_full |
ADSORPTION ISOTHERMS OF CALCIUM ÍONS (Ca+2) FROM HARD WATER IN CELLULOSIC MATERIALS |
title_fullStr |
ADSORPTION ISOTHERMS OF CALCIUM ÍONS (Ca+2) FROM HARD WATER IN CELLULOSIC MATERIALS |
title_full_unstemmed |
ADSORPTION ISOTHERMS OF CALCIUM ÍONS (Ca+2) FROM HARD WATER IN CELLULOSIC MATERIALS |
title_sort |
ADSORPTION ISOTHERMS OF CALCIUM ÍONS (Ca+2) FROM HARD WATER IN CELLULOSIC MATERIALS |
author |
Silva, Brunela Pereira da |
author_facet |
Silva, Brunela Pereira da Botelho, Lorenna Almeida Neto, Abelardo Barreto de Mendonça Sousa, Rita de Cássia Superbi de Bellato, Carlos Roberto Silva, Deusanilde de Jesus |
author_role |
author |
author2 |
Botelho, Lorenna Almeida Neto, Abelardo Barreto de Mendonça Sousa, Rita de Cássia Superbi de Bellato, Carlos Roberto Silva, Deusanilde de Jesus |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Silva, Brunela Pereira da Botelho, Lorenna Almeida Neto, Abelardo Barreto de Mendonça Sousa, Rita de Cássia Superbi de Bellato, Carlos Roberto Silva, Deusanilde de Jesus |
dc.subject.por.fl_str_mv |
Hard Water Adsorption Microcrystalline Cellulose Bleached Eucalyptus Kraft pulp Calcium ion (Ca 2) Água dura Isotermas de adsorção Celulose microcristalina Polpa Kraft de Eucalyptus branqueada Ions cálcio (Ca 2). |
topic |
Hard Water Adsorption Microcrystalline Cellulose Bleached Eucalyptus Kraft pulp Calcium ion (Ca 2) Água dura Isotermas de adsorção Celulose microcristalina Polpa Kraft de Eucalyptus branqueada Ions cálcio (Ca 2). |
description |
Water used in industrial processes requires a special treatment to achieve ahigh level of quality. In this context, the aim of this study was to investigate the use of cellulosic materials for water softening, such as microcrystalline cellulose (101 µm and 500 µm) and bleached Eucalyptus Kraft pulp. Firstly, the kinetic study was made in order to optimize operation parameters and then the adsorption processes were conducted, at three different levels of pH and different concentrations of calcium. The results showed that the pseudo-second order kinetic model had the best correlation coefficient and the Freundlich isotherm model was more appropriate to fit the experimental data, with thehighest adsorption capacity observed at pH 7,0 for all the tested materials. At this pH, the microcrystalline cellulose adsorbed more than the bleached Eucalyptus Kraft pulp. Thus, it could be concluded that the proposed objectives were achieved. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-28 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufv.br/jcec/article/view/2446941602023016132 10.18540/jcecvl2iss3pp132-145 |
url |
https://periodicos.ufv.br/jcec/article/view/2446941602023016132 |
identifier_str_mv |
10.18540/jcecvl2iss3pp132-145 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufv.br/jcec/article/view/2446941602023016132/pdf |
dc.rights.driver.fl_str_mv |
Copyright (c) 2016 The Journal of Engineering and Exact Sciences info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2016 The Journal of Engineering and Exact Sciences |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/kswps |
dc.publisher.none.fl_str_mv |
Universidade Federal de Viçosa - UFV |
publisher.none.fl_str_mv |
Universidade Federal de Viçosa - UFV |
dc.source.none.fl_str_mv |
The Journal of Engineering and Exact Sciences; Vol. 2 No. 3 (2016); 132-145 The Journal of Engineering and Exact Sciences; Vol. 2 Núm. 3 (2016); 132-145 The Journal of Engineering and Exact Sciences; v. 2 n. 3 (2016); 132-145 2527-1075 reponame:Revista de Engenharia Química e Química instname:Universidade Federal de Viçosa (UFV) instacron:UFV |
instname_str |
Universidade Federal de Viçosa (UFV) |
instacron_str |
UFV |
institution |
UFV |
reponame_str |
Revista de Engenharia Química e Química |
collection |
Revista de Engenharia Química e Química |
repository.name.fl_str_mv |
Revista de Engenharia Química e Química - Universidade Federal de Viçosa (UFV) |
repository.mail.fl_str_mv |
jcec.journal@ufv.br||req2@ufv.br |
_version_ |
1800211186821627904 |