Efficient adsorption of Au(CN)2− from gold cyanidation with graphene oxide-polyethylenimine hydrogel as adsorbent
The adsorption of gold cyanide complex ion (Au(CN)2−) on graphene oxide-polyethylenimine hydrogel (GO/PEI hydrogel) from gold cyanidation has been studied to explore the possibility of the application of GO/PEI hydrogel in gold cyanidation process for extracting gold from ores. The adsorption was ca...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-01-01
|
| Series: | Results in Physics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379717315498 |
| _version_ | 1818328267934924800 |
|---|---|
| author | Lang Yang Feifei Jia Bingqiao Yang Shaoxian Song |
| author_facet | Lang Yang Feifei Jia Bingqiao Yang Shaoxian Song |
| author_sort | Lang Yang |
| collection | DOAJ |
| description | The adsorption of gold cyanide complex ion (Au(CN)2−) on graphene oxide-polyethylenimine hydrogel (GO/PEI hydrogel) from gold cyanidation has been studied to explore the possibility of the application of GO/PEI hydrogel in gold cyanidation process for extracting gold from ores. The adsorption was carried out in artificial Au(CN)2− aqueous solution with GO/PEI hydrogel as adsorbent. The experimental results, as well as IR, XPS and SEM−EDS, have shown that GO/PEI hydrogel exhibited a high adsorption capacity and a fast adsorption rate of Au(CN)2−, suggesting that GO/PEI hydrogel might be a good adsorbent for the recovery of Au(CN)2−. The adsorption of Au(CN)2− on GO/PEI hydrogel obeyed the Langmuir isotherm model and fitted well with the pseudo second order model. The good recovery of Au(CN)2− was largely related to the porous structure, large specific surface area, as well as the oxygenous functional groups on the surface of GO/PEI hydrogel. Keywords: Graphene oxide, Polyethylenimine, Hydrogel, Cyanide complex ion |
| first_indexed | 2024-12-13T12:29:27Z |
| format | Article |
| id | doaj.art-5afd5af1e6804afc828b2988e4ad99dc |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-13T12:29:27Z |
| publishDate | 2017-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-5afd5af1e6804afc828b2988e4ad99dc2022-12-21T23:46:04ZengElsevierResults in Physics2211-37972017-01-01740894095Efficient adsorption of Au(CN)2− from gold cyanidation with graphene oxide-polyethylenimine hydrogel as adsorbentLang Yang0Feifei Jia1Bingqiao Yang2Shaoxian Song3School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, ChinaSchool of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China; Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China; Corresponding authors at: School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China.School of Resource and Civil Engineering, Wuhan Institute of Technology, Xiongchu Avenue 693, Wuhan, Hubei 430073, ChinaSchool of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China; Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China; Hubei Provincial Collaborative Innovation Center for High Efficient Utilization of Vanadium Resources, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China; Corresponding authors at: School of Resources and Environmental Engineering, Wuhan University of Technology, Luoshi Road 122, Wuhan, Hubei 430070, China.The adsorption of gold cyanide complex ion (Au(CN)2−) on graphene oxide-polyethylenimine hydrogel (GO/PEI hydrogel) from gold cyanidation has been studied to explore the possibility of the application of GO/PEI hydrogel in gold cyanidation process for extracting gold from ores. The adsorption was carried out in artificial Au(CN)2− aqueous solution with GO/PEI hydrogel as adsorbent. The experimental results, as well as IR, XPS and SEM−EDS, have shown that GO/PEI hydrogel exhibited a high adsorption capacity and a fast adsorption rate of Au(CN)2−, suggesting that GO/PEI hydrogel might be a good adsorbent for the recovery of Au(CN)2−. The adsorption of Au(CN)2− on GO/PEI hydrogel obeyed the Langmuir isotherm model and fitted well with the pseudo second order model. The good recovery of Au(CN)2− was largely related to the porous structure, large specific surface area, as well as the oxygenous functional groups on the surface of GO/PEI hydrogel. Keywords: Graphene oxide, Polyethylenimine, Hydrogel, Cyanide complex ionhttp://www.sciencedirect.com/science/article/pii/S2211379717315498 |
| spellingShingle | Lang Yang Feifei Jia Bingqiao Yang Shaoxian Song Efficient adsorption of Au(CN)2− from gold cyanidation with graphene oxide-polyethylenimine hydrogel as adsorbent Results in Physics |
| title | Efficient adsorption of Au(CN)2− from gold cyanidation with graphene oxide-polyethylenimine hydrogel as adsorbent |
| title_full | Efficient adsorption of Au(CN)2− from gold cyanidation with graphene oxide-polyethylenimine hydrogel as adsorbent |
| title_fullStr | Efficient adsorption of Au(CN)2− from gold cyanidation with graphene oxide-polyethylenimine hydrogel as adsorbent |
| title_full_unstemmed | Efficient adsorption of Au(CN)2− from gold cyanidation with graphene oxide-polyethylenimine hydrogel as adsorbent |
| title_short | Efficient adsorption of Au(CN)2− from gold cyanidation with graphene oxide-polyethylenimine hydrogel as adsorbent |
| title_sort | efficient adsorption of au cn 2 from gold cyanidation with graphene oxide polyethylenimine hydrogel as adsorbent |
| url | http://www.sciencedirect.com/science/article/pii/S2211379717315498 |
| work_keys_str_mv | AT langyang efficientadsorptionofaucn2fromgoldcyanidationwithgrapheneoxidepolyethyleniminehydrogelasadsorbent AT feifeijia efficientadsorptionofaucn2fromgoldcyanidationwithgrapheneoxidepolyethyleniminehydrogelasadsorbent AT bingqiaoyang efficientadsorptionofaucn2fromgoldcyanidationwithgrapheneoxidepolyethyleniminehydrogelasadsorbent AT shaoxiansong efficientadsorptionofaucn2fromgoldcyanidationwithgrapheneoxidepolyethyleniminehydrogelasadsorbent |