Calcium alginate-nZVI-biochar for removal of Pb/Zn/Cd in water: Insights into governing mechanisms and performance
Heavy metals pollution in water caused by the intensification of industrial processes and human activities has attracted worldwide attention. Finding an environmental-friendly and efficient remediation method is in need. In this study, the calcium alginate entrapment and liquid-phase reduction metho...
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| Veröffentlicht in: | The Science of the total environment 2023-10, Vol.894, p.164810-164810, Article 164810 |
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| creator | Zhao, Ruohan Wang, Bing Wu, Pan Feng, Qianwei Chen, Miao Zhang, Xueyang Wang, Shengsen |
| description | Heavy metals pollution in water caused by the intensification of industrial processes and human activities has attracted worldwide attention. Finding an environmental-friendly and efficient remediation method is in need. In this study, the calcium alginate entrapment and liquid-phase reduction method were used to prepare calcium alginate-nZVI-biochar composite (CANRC), which was firstly used to remove Pb2+, Zn2+, and Cd2+ in water. The effects of pyrolysis temperature, solution pH, and coexisting ions, etc. during adsorption processes were explored. Scanning electron microscope-Energy dispersive spectrometer (SEM-EDS), X-ray diffraction spectroscopy (XRD), and X-ray photoelectron spectroscopy (XPS) were used to characterize the physicochemical properties of CANRC before and after adsorption. Different adsorption models and site energy analysis were used to analyze the possible mechanisms. The results showed that CANRC prepared at 300 °C and a 5 wt% Fe loading ratio had the maximum adsorption capacities with a dosage of 2.5 g/L and pH = 5.0– 6.0. The adsorption process was more in line with the Langmuir isotherm model dominated by monolayer adsorption. The maximum adsorption capacities of Pb2+, Zn2+, and Cd2+ were 247.99, 71.77, and 47.27 mg/g, respectively. Site energy analysis combined with XRD and XPS analysis indicated that surface complexation and precipitation were the main adsorption mechanisms. This study provides an alternative way for the removal of heavy metals from water.
[Display omitted]
•CANRC was prepared by calcium alginate-entrapment method to remove Pb2+, Zn2+, and Cd2+.•The entrapment of CA reduced the Fe dissolution with high regeneration performance.•Low pyrolysis temperature and the solution pH = 5.0– 6.0 promoted the adsorption.•The maximum adsorption capacity of CANRC for Pb2+ was higher than Zn2+ and Cd2+.•Surface complexation and co-precipitation were the main adsorption mechanisms. |
| doi_str_mv | 10.1016/j.scitotenv.2023.164810 |
| format | Article |
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[Display omitted]
•CANRC was prepared by calcium alginate-entrapment method to remove Pb2+, Zn2+, and Cd2+.•The entrapment of CA reduced the Fe dissolution with high regeneration performance.•Low pyrolysis temperature and the solution pH = 5.0– 6.0 promoted the adsorption.•The maximum adsorption capacity of CANRC for Pb2+ was higher than Zn2+ and Cd2+.•Surface complexation and co-precipitation were the main adsorption mechanisms.</description><identifier>ISSN: 0048-9697</identifier><identifier>EISSN: 1879-1026</identifier><identifier>DOI: 10.1016/j.scitotenv.2023.164810</identifier><identifier>PMID: 37308020</identifier><language>eng</language><publisher>Netherlands: Elsevier B.V</publisher><subject>Adsorption ; Biochar ; Calcium alginate ; Heavy metals ; Wastewater</subject><ispartof>The Science of the total environment, 2023-10, Vol.894, p.164810-164810, Article 164810</ispartof><rights>2023 Elsevier B.V.</rights><rights>Copyright © 2023 Elsevier B.V. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c371t-bccdea2d526548833009e9149ae0635bec63482187d18862f373760b4ce0ddb73</citedby><cites>FETCH-LOGICAL-c371t-bccdea2d526548833009e9149ae0635bec63482187d18862f373760b4ce0ddb73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0048969723034332$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/37308020$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhao, Ruohan</creatorcontrib><creatorcontrib>Wang, Bing</creatorcontrib><creatorcontrib>Wu, Pan</creatorcontrib><creatorcontrib>Feng, Qianwei</creatorcontrib><creatorcontrib>Chen, Miao</creatorcontrib><creatorcontrib>Zhang, Xueyang</creatorcontrib><creatorcontrib>Wang, Shengsen</creatorcontrib><title>Calcium alginate-nZVI-biochar for removal of Pb/Zn/Cd in water: Insights into governing mechanisms and performance</title><title>The Science of the total environment</title><addtitle>Sci Total Environ</addtitle><description>Heavy metals pollution in water caused by the intensification of industrial processes and human activities has attracted worldwide attention. Finding an environmental-friendly and efficient remediation method is in need. In this study, the calcium alginate entrapment and liquid-phase reduction method were used to prepare calcium alginate-nZVI-biochar composite (CANRC), which was firstly used to remove Pb2+, Zn2+, and Cd2+ in water. The effects of pyrolysis temperature, solution pH, and coexisting ions, etc. during adsorption processes were explored. Scanning electron microscope-Energy dispersive spectrometer (SEM-EDS), X-ray diffraction spectroscopy (XRD), and X-ray photoelectron spectroscopy (XPS) were used to characterize the physicochemical properties of CANRC before and after adsorption. Different adsorption models and site energy analysis were used to analyze the possible mechanisms. The results showed that CANRC prepared at 300 °C and a 5 wt% Fe loading ratio had the maximum adsorption capacities with a dosage of 2.5 g/L and pH = 5.0– 6.0. The adsorption process was more in line with the Langmuir isotherm model dominated by monolayer adsorption. The maximum adsorption capacities of Pb2+, Zn2+, and Cd2+ were 247.99, 71.77, and 47.27 mg/g, respectively. Site energy analysis combined with XRD and XPS analysis indicated that surface complexation and precipitation were the main adsorption mechanisms. This study provides an alternative way for the removal of heavy metals from water.
[Display omitted]
•CANRC was prepared by calcium alginate-entrapment method to remove Pb2+, Zn2+, and Cd2+.•The entrapment of CA reduced the Fe dissolution with high regeneration performance.•Low pyrolysis temperature and the solution pH = 5.0– 6.0 promoted the adsorption.•The maximum adsorption capacity of CANRC for Pb2+ was higher than Zn2+ and Cd2+.•Surface complexation and co-precipitation were the main adsorption mechanisms.</description><subject>Adsorption</subject><subject>Biochar</subject><subject>Calcium alginate</subject><subject>Heavy metals</subject><subject>Wastewater</subject><issn>0048-9697</issn><issn>1879-1026</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNqFkE1vGyEQhlHVqnHT_oWWYy9rD7C7sL1FVj8sRWoOTQ65IBZmHaxdcGHtqP8-WE5yLZeR0DPv6H0I-cJgyYC1q90yWz_HGcNxyYGLJWtrxeANWTAlu4oBb9-SBUCtqq7t5AX5kPMOypOKvScXQgpQwGFB0tqM1h8masatD2bGKtzfbareR_tgEh1iogmneDQjjQO96Vf3YbV21Af6WOD0jW5C9tuHOZevOdJtPGIKPmzphCUg-DxlaoKje0wlazLB4kfybjBjxk_P85Lc_vj-Z_2ruv79c7O-uq6skGyuemsdGu4a3ja1UkIAdNixujMIrWh6tK2oFS99HVOq5UMpJVvoa4vgXC_FJfl6zt2n-PeAedaTzxbH0QSMh6y54k0DrJZQUHlGbYo5Jxz0PvnJpH-agT4J1zv9KlyfhOuz8LL5-fnIoZ_Qve69GC7A1RnAUvXoMZ2CsGhwPqGdtYv-v0eeALLOll8</recordid><startdate>20231010</startdate><enddate>20231010</enddate><creator>Zhao, Ruohan</creator><creator>Wang, Bing</creator><creator>Wu, Pan</creator><creator>Feng, Qianwei</creator><creator>Chen, Miao</creator><creator>Zhang, Xueyang</creator><creator>Wang, Shengsen</creator><general>Elsevier B.V</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20231010</creationdate><title>Calcium alginate-nZVI-biochar for removal of Pb/Zn/Cd in water: Insights into governing mechanisms and performance</title><author>Zhao, Ruohan ; Wang, Bing ; Wu, Pan ; Feng, Qianwei ; Chen, Miao ; Zhang, Xueyang ; Wang, Shengsen</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c371t-bccdea2d526548833009e9149ae0635bec63482187d18862f373760b4ce0ddb73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Adsorption</topic><topic>Biochar</topic><topic>Calcium alginate</topic><topic>Heavy metals</topic><topic>Wastewater</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Zhao, Ruohan</creatorcontrib><creatorcontrib>Wang, Bing</creatorcontrib><creatorcontrib>Wu, Pan</creatorcontrib><creatorcontrib>Feng, Qianwei</creatorcontrib><creatorcontrib>Chen, Miao</creatorcontrib><creatorcontrib>Zhang, Xueyang</creatorcontrib><creatorcontrib>Wang, Shengsen</creatorcontrib><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>The Science of the total environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Zhao, Ruohan</au><au>Wang, Bing</au><au>Wu, Pan</au><au>Feng, Qianwei</au><au>Chen, Miao</au><au>Zhang, Xueyang</au><au>Wang, Shengsen</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Calcium alginate-nZVI-biochar for removal of Pb/Zn/Cd in water: Insights into governing mechanisms and performance</atitle><jtitle>The Science of the total environment</jtitle><addtitle>Sci Total Environ</addtitle><date>2023-10-10</date><risdate>2023</risdate><volume>894</volume><spage>164810</spage><epage>164810</epage><pages>164810-164810</pages><artnum>164810</artnum><issn>0048-9697</issn><eissn>1879-1026</eissn><abstract>Heavy metals pollution in water caused by the intensification of industrial processes and human activities has attracted worldwide attention. Finding an environmental-friendly and efficient remediation method is in need. In this study, the calcium alginate entrapment and liquid-phase reduction method were used to prepare calcium alginate-nZVI-biochar composite (CANRC), which was firstly used to remove Pb2+, Zn2+, and Cd2+ in water. The effects of pyrolysis temperature, solution pH, and coexisting ions, etc. during adsorption processes were explored. Scanning electron microscope-Energy dispersive spectrometer (SEM-EDS), X-ray diffraction spectroscopy (XRD), and X-ray photoelectron spectroscopy (XPS) were used to characterize the physicochemical properties of CANRC before and after adsorption. Different adsorption models and site energy analysis were used to analyze the possible mechanisms. The results showed that CANRC prepared at 300 °C and a 5 wt% Fe loading ratio had the maximum adsorption capacities with a dosage of 2.5 g/L and pH = 5.0– 6.0. The adsorption process was more in line with the Langmuir isotherm model dominated by monolayer adsorption. The maximum adsorption capacities of Pb2+, Zn2+, and Cd2+ were 247.99, 71.77, and 47.27 mg/g, respectively. Site energy analysis combined with XRD and XPS analysis indicated that surface complexation and precipitation were the main adsorption mechanisms. This study provides an alternative way for the removal of heavy metals from water.
[Display omitted]
•CANRC was prepared by calcium alginate-entrapment method to remove Pb2+, Zn2+, and Cd2+.•The entrapment of CA reduced the Fe dissolution with high regeneration performance.•Low pyrolysis temperature and the solution pH = 5.0– 6.0 promoted the adsorption.•The maximum adsorption capacity of CANRC for Pb2+ was higher than Zn2+ and Cd2+.•Surface complexation and co-precipitation were the main adsorption mechanisms.</abstract><cop>Netherlands</cop><pub>Elsevier B.V</pub><pmid>37308020</pmid><doi>10.1016/j.scitotenv.2023.164810</doi><tpages>1</tpages></addata></record> |
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| subjects | Adsorption Biochar Calcium alginate Heavy metals Wastewater |
| title | Calcium alginate-nZVI-biochar for removal of Pb/Zn/Cd in water: Insights into governing mechanisms and performance |
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