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Extractive removal of astacryl blue BG and astacryl golden yellow dyes from aqueous solutions by liquid–liquid extraction
Extractive removal of cationic dyes namely astacryl blue BG and astacryl golden yellow were carried out from aqueous solutions using salicylic acid dissolved in toluene. Extraction efficiency was studied under various experimental conditions, such as pH of feed solution, concentration of stripping a...
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Published in: | Desalination 2011-08, Vol.277 (1), p.308-312 |
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description | Extractive removal of cationic dyes namely astacryl blue BG and astacryl golden yellow were carried out from aqueous solutions using salicylic acid dissolved in toluene. Extraction efficiency was studied under various experimental conditions, such as pH of feed solution, concentration of stripping agent, extractant concentration, extraction time, temperature, initial dye concentration, and reusability of solvent. Under the optimised experimental conditions 93–98% of dyes were extracted. The extracted dyes were quantitatively stripped with sulphuric acid solution. The organic phase obtained after the stripping of dyes was washed with dilute sodium hydroxide solution to neutralise any sulphuric acid trapped or adhered to the solvent and then with distilled water. This solvent was reused in succeeding extraction of dyes. The optimised conditions were: pH of the feed 10
±
0.2, extractant concentration 2.89
×
10
−
2
mol/L, concentration of stripping agent 1.5
N H
2SO
4, extraction time 4
min, initial dye concentration 50
mg
L
−
1
, aqueous to organic (A/O) ratio 1:1. Finally real industrial textile wastewater was tested under optimised conditions, 92% of dye was extracted at 25
°C.
►It does not produce any sludge. ►Low cost effective study. ►Solvent can be reused as many as times. |
doi_str_mv | 10.1016/j.desal.2011.04.047 |
format | article |
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±
0.2, extractant concentration 2.89
×
10
−
2
mol/L, concentration of stripping agent 1.5
N H
2SO
4, extraction time 4
min, initial dye concentration 50
mg
L
−
1
, aqueous to organic (A/O) ratio 1:1. Finally real industrial textile wastewater was tested under optimised conditions, 92% of dye was extracted at 25
°C.
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±
0.2, extractant concentration 2.89
×
10
−
2
mol/L, concentration of stripping agent 1.5
N H
2SO
4, extraction time 4
min, initial dye concentration 50
mg
L
−
1
, aqueous to organic (A/O) ratio 1:1. Finally real industrial textile wastewater was tested under optimised conditions, 92% of dye was extracted at 25
°C.
►It does not produce any sludge. ►Low cost effective study. ►Solvent can be reused as many as times.</description><subject>Applied sciences</subject><subject>Aqueous solutions</subject><subject>Astacryl blue BG</subject><subject>Chemical engineering</subject><subject>desalination</subject><subject>Dyes</subject><subject>Exact sciences and technology</subject><subject>General purification processes</subject><subject>Liquid-liquid extraction</subject><subject>Pollution</subject><subject>Removal</subject><subject>Salicylic acid</subject><subject>sodium hydroxide</subject><subject>Solvents</subject><subject>Stripping</subject><subject>Stripping agent</subject><subject>Sulfuric acid</subject><subject>temperature</subject><subject>toluene</subject><subject>Waste water</subject><subject>Wastewater</subject><subject>Wastewaters</subject><subject>Water treatment and pollution</subject><issn>0011-9164</issn><issn>1873-4464</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNp9kc9u1DAQxiMEEkvLE3DAFwSX3fpf7OTAAapSKlXiAD1bE3tSeeWNWztZiLjwDrwhT4KXrOit0sge279v5pOnql4xumGUqbPtxmGGsOGUsQ2VJfSTasUaLdZSKvm0WtHysm6Zks-rFzlvy5G3Qqyqnxc_xgR29HskCXdxD4HEnkAewaY5kC5MSD5eEhjcw-VtDA4HMmMI8TtxM2bSp7gjcD9hnDLJMUyjj0Mm3UyCv5-8-_Pr95IQPDaMw2n1rIeQ8eVxP6luPl18O_-8vv5yeXX-4XptJedjWRsUurGgFKs7JSS6uq5t21GorbJa9aJpOEgm-qbFuus61baNbHtA2TLnxEn1dql7l2JxmEez89kW8zAc7JqmEZTroijku0dJprVmNeNMFVQsqE0x54S9uUt-B2k2jJrDUMzW_BuKOQzFUFlCF9WbYwPIFkKfYLA-_5dyKTSjShbu9cL1EA3cpsLcfC2FakppSzmvC_F-IbD83N5jMtl6HCw6n9COxkX_qJO_yXGveQ</recordid><startdate>20110815</startdate><enddate>20110815</enddate><creator>Muthuraman, G.</creator><general>Elsevier B.V</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SU</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>KR7</scope><scope>7QH</scope><scope>7ST</scope><scope>7UA</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>SOI</scope></search><sort><creationdate>20110815</creationdate><title>Extractive removal of astacryl blue BG and astacryl golden yellow dyes from aqueous solutions by liquid–liquid extraction</title><author>Muthuraman, G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c422t-c48e378ca6615b634ed555c9b0a5c6c76f3882a413f89e5bbb699849fae491dd3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Applied sciences</topic><topic>Aqueous solutions</topic><topic>Astacryl blue BG</topic><topic>Chemical engineering</topic><topic>desalination</topic><topic>Dyes</topic><topic>Exact sciences and technology</topic><topic>General purification processes</topic><topic>Liquid-liquid extraction</topic><topic>Pollution</topic><topic>Removal</topic><topic>Salicylic acid</topic><topic>sodium hydroxide</topic><topic>Solvents</topic><topic>Stripping</topic><topic>Stripping agent</topic><topic>Sulfuric acid</topic><topic>temperature</topic><topic>toluene</topic><topic>Waste water</topic><topic>Wastewater</topic><topic>Wastewaters</topic><topic>Water treatment and pollution</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Muthuraman, G.</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environmental Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Aqualine</collection><collection>Environment Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><jtitle>Desalination</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Muthuraman, G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Extractive removal of astacryl blue BG and astacryl golden yellow dyes from aqueous solutions by liquid–liquid extraction</atitle><jtitle>Desalination</jtitle><date>2011-08-15</date><risdate>2011</risdate><volume>277</volume><issue>1</issue><spage>308</spage><epage>312</epage><pages>308-312</pages><issn>0011-9164</issn><eissn>1873-4464</eissn><coden>DSLNAH</coden><abstract>Extractive removal of cationic dyes namely astacryl blue BG and astacryl golden yellow were carried out from aqueous solutions using salicylic acid dissolved in toluene. Extraction efficiency was studied under various experimental conditions, such as pH of feed solution, concentration of stripping agent, extractant concentration, extraction time, temperature, initial dye concentration, and reusability of solvent. Under the optimised experimental conditions 93–98% of dyes were extracted. The extracted dyes were quantitatively stripped with sulphuric acid solution. The organic phase obtained after the stripping of dyes was washed with dilute sodium hydroxide solution to neutralise any sulphuric acid trapped or adhered to the solvent and then with distilled water. This solvent was reused in succeeding extraction of dyes. The optimised conditions were: pH of the feed 10
±
0.2, extractant concentration 2.89
×
10
−
2
mol/L, concentration of stripping agent 1.5
N H
2SO
4, extraction time 4
min, initial dye concentration 50
mg
L
−
1
, aqueous to organic (A/O) ratio 1:1. Finally real industrial textile wastewater was tested under optimised conditions, 92% of dye was extracted at 25
°C.
►It does not produce any sludge. ►Low cost effective study. ►Solvent can be reused as many as times.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.desal.2011.04.047</doi><tpages>5</tpages></addata></record> |
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language | eng |
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source | ScienceDirect Freedom Collection |
subjects | Applied sciences Aqueous solutions Astacryl blue BG Chemical engineering desalination Dyes Exact sciences and technology General purification processes Liquid-liquid extraction Pollution Removal Salicylic acid sodium hydroxide Solvents Stripping Stripping agent Sulfuric acid temperature toluene Waste water Wastewater Wastewaters Water treatment and pollution |
title | Extractive removal of astacryl blue BG and astacryl golden yellow dyes from aqueous solutions by liquid–liquid extraction |
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