Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool
A previous publication by our group reported that adsorption of Cr(VI) on sheep wool reached 99% when allowed a long residence time, with concurrent reduction to Cr(III). In this study, the process was scaled up by optimizing a pilot plant based on semi-batch adsorption cycles. This yielded Cr(III),...
محفوظ في:
| المؤلف الرئيسي: | |
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| مؤلفون آخرون: | , , |
| التنسيق: | article |
| منشور في: |
2020
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| الموضوعات: | |
| الوصول للمادة أونلاين: | http://hdl.handle.net/11073/19783 |
| الوسوم: |
إضافة وسم
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| _version_ | 1864513434532446208 |
|---|---|
| author | Badrelzaman, Mohamed |
| author2 | Khamis, Mustafa Ibrahim, Taleb Jumean, Fawwaz |
| author2_role | author author author |
| author_facet | Badrelzaman, Mohamed Khamis, Mustafa Ibrahim, Taleb Jumean, Fawwaz |
| author_role | author |
| dc.creator.none.fl_str_mv | Badrelzaman, Mohamed Khamis, Mustafa Ibrahim, Taleb Jumean, Fawwaz |
| dc.date.none.fl_str_mv | 2020-09-06T06:05:38Z 2020-09-06T06:05:38Z 2020 |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | Badrelzaman, M.; Khamis, M.I.; Ibrahim, T.H.; Jumean, F.H. Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool. Processes 2020, 8, 1092. 2227-9717 http://hdl.handle.net/11073/19783 10.3390/pr8091092 |
| dc.language.none.fl_str_mv | en_US |
| dc.publisher.none.fl_str_mv | MDPI |
| dc.relation.none.fl_str_mv | https://doi.org/10.3390/pr8091092 |
| dc.subject.none.fl_str_mv | Hexavalent chromium Wool Adsorption Semi-batch adsorption cycles Industrial wastewater |
| dc.title.none.fl_str_mv | Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool |
| dc.type.none.fl_str_mv | Peer-Reviewed Published version info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
| description | A previous publication by our group reported that adsorption of Cr(VI) on sheep wool reached 99% when allowed a long residence time, with concurrent reduction to Cr(III). In this study, the process was scaled up by optimizing a pilot plant based on semi-batch adsorption cycles. This yielded Cr(III), which is about 300 times less toxic than Cr(VI), and can be precipitated using lime at high pH. Since the reduction step is slower than the adsorption one, an adsorption column was designed to perform semi-batch operation cycles, whereby the extended “off cycle” allows reduction to take place. Since reduction of Cr(VI) frees active sites on wool, the plant acts in lieu of in situ regeneration, accompanied by additional adsorption of Cr(VI). The results show that 97% of the column efficiency can be recovered within 24 h of “off cycle”. Wastewater from a local electroplating industry was treated by this method with high removal of Cr(VI), reaching the limit permitted by environmental standards. This study also reveals that typical concentrations of heavy metals, present in wastewater produced from electroplating, had no substantial antagonistic interference with Cr(VI) adsorption. |
| format | article |
| id | aus_5e8274fbf171986427e080a754b020ef |
| identifier_str_mv | Badrelzaman, M.; Khamis, M.I.; Ibrahim, T.H.; Jumean, F.H. Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool. Processes 2020, 8, 1092. 2227-9717 10.3390/pr8091092 |
| language_invalid_str_mv | en_US |
| network_acronym_str | aus |
| network_name_str | aus |
| oai_identifier_str | oai:repository.aus.edu:11073/19783 |
| publishDate | 2020 |
| publisher.none.fl_str_mv | MDPI |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| spelling | Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep WoolBadrelzaman, MohamedKhamis, MustafaIbrahim, TalebJumean, FawwazHexavalent chromiumWoolAdsorptionSemi-batch adsorption cyclesIndustrial wastewaterA previous publication by our group reported that adsorption of Cr(VI) on sheep wool reached 99% when allowed a long residence time, with concurrent reduction to Cr(III). In this study, the process was scaled up by optimizing a pilot plant based on semi-batch adsorption cycles. This yielded Cr(III), which is about 300 times less toxic than Cr(VI), and can be precipitated using lime at high pH. Since the reduction step is slower than the adsorption one, an adsorption column was designed to perform semi-batch operation cycles, whereby the extended “off cycle” allows reduction to take place. Since reduction of Cr(VI) frees active sites on wool, the plant acts in lieu of in situ regeneration, accompanied by additional adsorption of Cr(VI). The results show that 97% of the column efficiency can be recovered within 24 h of “off cycle”. Wastewater from a local electroplating industry was treated by this method with high removal of Cr(VI), reaching the limit permitted by environmental standards. This study also reveals that typical concentrations of heavy metals, present in wastewater produced from electroplating, had no substantial antagonistic interference with Cr(VI) adsorption.MDPI2020-09-06T06:05:38Z2020-09-06T06:05:38Z2020Peer-ReviewedPublished versioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfBadrelzaman, M.; Khamis, M.I.; Ibrahim, T.H.; Jumean, F.H. Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool. Processes 2020, 8, 1092.2227-9717http://hdl.handle.net/11073/1978310.3390/pr8091092en_UShttps://doi.org/10.3390/pr8091092oai:repository.aus.edu:11073/197832024-08-22T12:06:08Z |
| spellingShingle | Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool Badrelzaman, Mohamed Hexavalent chromium Wool Adsorption Semi-batch adsorption cycles Industrial wastewater |
| status_str | publishedVersion |
| title | Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool |
| title_full | Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool |
| title_fullStr | Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool |
| title_full_unstemmed | Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool |
| title_short | Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool |
| title_sort | Scale-Up of Self-Regenerating Semi-Batch Adsorption Cycles through Concurrent Adsorption and Reduction of Cr(VI) on Sheep Wool |
| topic | Hexavalent chromium Wool Adsorption Semi-batch adsorption cycles Industrial wastewater |
| url | http://hdl.handle.net/11073/19783 |