Batch adsorption studies on the removal of malachite green from water by chemically modified Azolla pinnata
Azolla pinnata (AP), a common water fern found in rice fields in Asia and cultivated for biological nitrogen fixation, was studied as a potential adsorbent for the removal of malachite green in a batch adsorption system. The batch adsorption studies, involving unmodified AP (UAP) and two chemically...
Gespeichert in:
| Veröffentlicht in: | Desalination and water treatment 2016-07, Vol.57 (31), p.14632-14646 |
|---|---|
| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 14646 |
|---|---|
| container_issue | 31 |
| container_start_page | 14632 |
| container_title | Desalination and water treatment |
| container_volume | 57 |
| creator | Kooh, Muhammad Raziq Rahimi Lim, Linda B.L. Lim, Lee Hoon Bandara, J.M.R.S. |
| description | Azolla pinnata (AP), a common water fern found in rice fields in Asia and cultivated for biological nitrogen fixation, was studied as a potential adsorbent for the removal of malachite green in a batch adsorption system. The batch adsorption studies, involving unmodified AP (UAP) and two chemically modified AP—H3PO4-treated AP (PAP) and NaOH-treated AP (NAP)—included the effects of adsorbent dosage, pH, ionic strength, contact time, thermodynamics and kinetics studies, estimation of activation energy and regeneration experiments. Three isotherm models namely the Langmuir, Freundlich and Dubinin–Radushkevich models were used and the Langmuir model best represented all the three adsorption systems with maximum adsorption capacity (qm) of UAP, PAP and NAP at 25°C, to be at 87.0, 292.1 and 109.6 mg g−1, respectively. The kinetics modelling included the pseudo-first-order, pseudo-second-order, Weber–Morris intraparticle diffusion and the Boyd models. Thermodynamic studies showed that all the three adsorption systems are endothermic and spontaneous in nature. All three adsorbents were regenerated with 0.1 mol L−1 NaOH and were effective even after five cycles. |
| doi_str_mv | 10.1080/19443994.2015.1065450 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_1790937967</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S1944398624179222</els_id><sourcerecordid>4010568291</sourcerecordid><originalsourceid>FETCH-LOGICAL-c318t-14198915b2603a6715824cd85439a16a63afac4660b43b1ec60679c2f394325c3</originalsourceid><addsrcrecordid>eNqNkc1KBDEMxwdRUHQfQSh48bLaTj9mehIVv0DwoueS7WTcysx0bbsr69P4LD6ZXVdBvGguCeGXP0n-RbHP6BGjNT1mWgiutTgqKZO5paSQdKPYWfXHXNdq80e9XYxifKI5pKikKHeK7gySnRJoog-z5PxAYpo3DiPJZZoiCdj7BXTEt6SHDuzUJSSPAXEgbfA9eYGEgUyWxE6xdxa6bvn-1vvGtQ4bcvrquw7IzA0DJNgrtlroIo6-8m7xcHlxf349vr27ujk_vR1bzuo0ZoLpWjM5KRXloCom61LYppb5UGAKFIcWrFCKTgSfMLSKqkrbsuVa8FJavlscrnVnwT_PMSbTu2gxbzKgn0fDKk01r7Sq_oHWspRMKpnRg1_ok5-HIR-SqaoWWqpPQbmmbPAxBmzNLLgewtIwalaOmW_HzMox8-VYnjtZz2F-zMJhMNE6HCw2LqBNpvHuD4UP7p2btQ</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1778495667</pqid></control><display><type>article</type><title>Batch adsorption studies on the removal of malachite green from water by chemically modified Azolla pinnata</title><source>Alma/SFX Local Collection</source><creator>Kooh, Muhammad Raziq Rahimi ; Lim, Linda B.L. ; Lim, Lee Hoon ; Bandara, J.M.R.S.</creator><creatorcontrib>Kooh, Muhammad Raziq Rahimi ; Lim, Linda B.L. ; Lim, Lee Hoon ; Bandara, J.M.R.S.</creatorcontrib><description>Azolla pinnata (AP), a common water fern found in rice fields in Asia and cultivated for biological nitrogen fixation, was studied as a potential adsorbent for the removal of malachite green in a batch adsorption system. The batch adsorption studies, involving unmodified AP (UAP) and two chemically modified AP—H3PO4-treated AP (PAP) and NaOH-treated AP (NAP)—included the effects of adsorbent dosage, pH, ionic strength, contact time, thermodynamics and kinetics studies, estimation of activation energy and regeneration experiments. Three isotherm models namely the Langmuir, Freundlich and Dubinin–Radushkevich models were used and the Langmuir model best represented all the three adsorption systems with maximum adsorption capacity (qm) of UAP, PAP and NAP at 25°C, to be at 87.0, 292.1 and 109.6 mg g−1, respectively. The kinetics modelling included the pseudo-first-order, pseudo-second-order, Weber–Morris intraparticle diffusion and the Boyd models. Thermodynamic studies showed that all the three adsorption systems are endothermic and spontaneous in nature. All three adsorbents were regenerated with 0.1 mol L−1 NaOH and were effective even after five cycles.</description><identifier>ISSN: 1944-3986</identifier><identifier>ISSN: 1944-3994</identifier><identifier>EISSN: 1944-3986</identifier><identifier>DOI: 10.1080/19443994.2015.1065450</identifier><language>eng</language><publisher>Abingdon: Elsevier Inc</publisher><subject>Adsorbents ; Adsorption ; Adsorption isotherm ; Azolla ; Azolla pinnata ; Biological ; Chemically modified adsorbent ; Endothermic reactions ; Ferns ; Kinetics ; Malachite green ; Malachite green dye ; Nitrogen fixation ; Rice fields ; Sodium hydroxide ; Thermodynamics</subject><ispartof>Desalination and water treatment, 2016-07, Vol.57 (31), p.14632-14646</ispartof><rights>2015 Elsevier Inc.</rights><rights>2015 Balaban Desalination Publications. All rights reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c318t-14198915b2603a6715824cd85439a16a63afac4660b43b1ec60679c2f394325c3</citedby><cites>FETCH-LOGICAL-c318t-14198915b2603a6715824cd85439a16a63afac4660b43b1ec60679c2f394325c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Kooh, Muhammad Raziq Rahimi</creatorcontrib><creatorcontrib>Lim, Linda B.L.</creatorcontrib><creatorcontrib>Lim, Lee Hoon</creatorcontrib><creatorcontrib>Bandara, J.M.R.S.</creatorcontrib><title>Batch adsorption studies on the removal of malachite green from water by chemically modified Azolla pinnata</title><title>Desalination and water treatment</title><description>Azolla pinnata (AP), a common water fern found in rice fields in Asia and cultivated for biological nitrogen fixation, was studied as a potential adsorbent for the removal of malachite green in a batch adsorption system. The batch adsorption studies, involving unmodified AP (UAP) and two chemically modified AP—H3PO4-treated AP (PAP) and NaOH-treated AP (NAP)—included the effects of adsorbent dosage, pH, ionic strength, contact time, thermodynamics and kinetics studies, estimation of activation energy and regeneration experiments. Three isotherm models namely the Langmuir, Freundlich and Dubinin–Radushkevich models were used and the Langmuir model best represented all the three adsorption systems with maximum adsorption capacity (qm) of UAP, PAP and NAP at 25°C, to be at 87.0, 292.1 and 109.6 mg g−1, respectively. The kinetics modelling included the pseudo-first-order, pseudo-second-order, Weber–Morris intraparticle diffusion and the Boyd models. Thermodynamic studies showed that all the three adsorption systems are endothermic and spontaneous in nature. All three adsorbents were regenerated with 0.1 mol L−1 NaOH and were effective even after five cycles.</description><subject>Adsorbents</subject><subject>Adsorption</subject><subject>Adsorption isotherm</subject><subject>Azolla</subject><subject>Azolla pinnata</subject><subject>Biological</subject><subject>Chemically modified adsorbent</subject><subject>Endothermic reactions</subject><subject>Ferns</subject><subject>Kinetics</subject><subject>Malachite green</subject><subject>Malachite green dye</subject><subject>Nitrogen fixation</subject><subject>Rice fields</subject><subject>Sodium hydroxide</subject><subject>Thermodynamics</subject><issn>1944-3986</issn><issn>1944-3994</issn><issn>1944-3986</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqNkc1KBDEMxwdRUHQfQSh48bLaTj9mehIVv0DwoueS7WTcysx0bbsr69P4LD6ZXVdBvGguCeGXP0n-RbHP6BGjNT1mWgiutTgqKZO5paSQdKPYWfXHXNdq80e9XYxifKI5pKikKHeK7gySnRJoog-z5PxAYpo3DiPJZZoiCdj7BXTEt6SHDuzUJSSPAXEgbfA9eYGEgUyWxE6xdxa6bvn-1vvGtQ4bcvrquw7IzA0DJNgrtlroIo6-8m7xcHlxf349vr27ujk_vR1bzuo0ZoLpWjM5KRXloCom61LYppb5UGAKFIcWrFCKTgSfMLSKqkrbsuVa8FJavlscrnVnwT_PMSbTu2gxbzKgn0fDKk01r7Sq_oHWspRMKpnRg1_ok5-HIR-SqaoWWqpPQbmmbPAxBmzNLLgewtIwalaOmW_HzMox8-VYnjtZz2F-zMJhMNE6HCw2LqBNpvHuD4UP7p2btQ</recordid><startdate>20160702</startdate><enddate>20160702</enddate><creator>Kooh, Muhammad Raziq Rahimi</creator><creator>Lim, Linda B.L.</creator><creator>Lim, Lee Hoon</creator><creator>Bandara, J.M.R.S.</creator><general>Elsevier Inc</general><general>Elsevier Limited</general><scope>6I.</scope><scope>AAFTH</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QH</scope><scope>7QL</scope><scope>7QO</scope><scope>7ST</scope><scope>7T7</scope><scope>7TN</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>H97</scope><scope>KR7</scope><scope>L.G</scope><scope>M7N</scope><scope>P64</scope><scope>SOI</scope><scope>7SU</scope></search><sort><creationdate>20160702</creationdate><title>Batch adsorption studies on the removal of malachite green from water by chemically modified Azolla pinnata</title><author>Kooh, Muhammad Raziq Rahimi ; Lim, Linda B.L. ; Lim, Lee Hoon ; Bandara, J.M.R.S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c318t-14198915b2603a6715824cd85439a16a63afac4660b43b1ec60679c2f394325c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Adsorbents</topic><topic>Adsorption</topic><topic>Adsorption isotherm</topic><topic>Azolla</topic><topic>Azolla pinnata</topic><topic>Biological</topic><topic>Chemically modified adsorbent</topic><topic>Endothermic reactions</topic><topic>Ferns</topic><topic>Kinetics</topic><topic>Malachite green</topic><topic>Malachite green dye</topic><topic>Nitrogen fixation</topic><topic>Rice fields</topic><topic>Sodium hydroxide</topic><topic>Thermodynamics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kooh, Muhammad Raziq Rahimi</creatorcontrib><creatorcontrib>Lim, Linda B.L.</creatorcontrib><creatorcontrib>Lim, Lee Hoon</creatorcontrib><creatorcontrib>Bandara, J.M.R.S.</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>CrossRef</collection><collection>Aqualine</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Biotechnology Research Abstracts</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Oceanic Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Algology Mycology and Protozoology Abstracts (Microbiology C)</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><collection>Environmental Engineering Abstracts</collection><jtitle>Desalination and water treatment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kooh, Muhammad Raziq Rahimi</au><au>Lim, Linda B.L.</au><au>Lim, Lee Hoon</au><au>Bandara, J.M.R.S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Batch adsorption studies on the removal of malachite green from water by chemically modified Azolla pinnata</atitle><jtitle>Desalination and water treatment</jtitle><date>2016-07-02</date><risdate>2016</risdate><volume>57</volume><issue>31</issue><spage>14632</spage><epage>14646</epage><pages>14632-14646</pages><issn>1944-3986</issn><issn>1944-3994</issn><eissn>1944-3986</eissn><abstract>Azolla pinnata (AP), a common water fern found in rice fields in Asia and cultivated for biological nitrogen fixation, was studied as a potential adsorbent for the removal of malachite green in a batch adsorption system. The batch adsorption studies, involving unmodified AP (UAP) and two chemically modified AP—H3PO4-treated AP (PAP) and NaOH-treated AP (NAP)—included the effects of adsorbent dosage, pH, ionic strength, contact time, thermodynamics and kinetics studies, estimation of activation energy and regeneration experiments. Three isotherm models namely the Langmuir, Freundlich and Dubinin–Radushkevich models were used and the Langmuir model best represented all the three adsorption systems with maximum adsorption capacity (qm) of UAP, PAP and NAP at 25°C, to be at 87.0, 292.1 and 109.6 mg g−1, respectively. The kinetics modelling included the pseudo-first-order, pseudo-second-order, Weber–Morris intraparticle diffusion and the Boyd models. Thermodynamic studies showed that all the three adsorption systems are endothermic and spontaneous in nature. All three adsorbents were regenerated with 0.1 mol L−1 NaOH and were effective even after five cycles.</abstract><cop>Abingdon</cop><pub>Elsevier Inc</pub><doi>10.1080/19443994.2015.1065450</doi><tpages>15</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1944-3986 |
| ispartof | Desalination and water treatment, 2016-07, Vol.57 (31), p.14632-14646 |
| issn | 1944-3986 1944-3994 1944-3986 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1790937967 |
| source | Alma/SFX Local Collection |
| subjects | Adsorbents Adsorption Adsorption isotherm Azolla Azolla pinnata Biological Chemically modified adsorbent Endothermic reactions Ferns Kinetics Malachite green Malachite green dye Nitrogen fixation Rice fields Sodium hydroxide Thermodynamics |
| title | Batch adsorption studies on the removal of malachite green from water by chemically modified Azolla pinnata |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-07T04%3A59%3A53IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Batch%20adsorption%20studies%20on%20the%20removal%20of%20malachite%20green%20from%20water%20by%20chemically%C2%A0modified%20Azolla%20pinnata&rft.jtitle=Desalination%20and%20water%20treatment&rft.au=Kooh,%20Muhammad%20Raziq%20Rahimi&rft.date=2016-07-02&rft.volume=57&rft.issue=31&rft.spage=14632&rft.epage=14646&rft.pages=14632-14646&rft.issn=1944-3986&rft.eissn=1944-3986&rft_id=info:doi/10.1080/19443994.2015.1065450&rft_dat=%3Cproquest_cross%3E4010568291%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1778495667&rft_id=info:pmid/&rft_els_id=S1944398624179222&rfr_iscdi=true |