Iqra Irfan, Muhammad Ali Inam, Waleed Usmani, Rashid Iftikhar, Zaib Jahan
{"title":"麦秸与污泥共热解制备铁功能化生物炭吸附回收磷酸盐","authors":"Iqra Irfan, Muhammad Ali Inam, Waleed Usmani, Rashid Iftikhar, Zaib Jahan","doi":"10.1016/j.eti.2023.103434","DOIUrl":null,"url":null,"abstract":"In recent years, the removal and recovery of phosphate (PO43−) from freshwater reservoirs using carbonaceous adsorbents has received much attention to address eutrophication issues and plant phosphate requirements. The viability of FeCl3 impregnated biochar (Fe@CBC) synthesized via co-pyrolysis of wheat straw (WS) and sewage sludge (SS) for phosphate removal from water under systematically designed sorption experiments and its subsequent potential as phosphatic fertilizer for improving plant growth, was thoroughly investigated in this study. The relatively higher PO43− sorption performance of Fe@CBC (5.23 mg/g) compared to FeCl3 impregnated biochars (Fe@WBC: 4.16 mg/g and Fe@SBC: 5.14 mg/g) synthesized via separate pyrolysis of WS and SS were primarily ascribed to the nano porous structure, higher point of zero charge (pHpzc) and enriched iron complexes on its surface (Fe-OH and FeC). Consequently, dominant sorption mechanism of PO43− ions towards Fe@WBC was associated to ligand exchange and chemisorption whereas that of Fe@SBC and Fe@CBC was identified as electrostatic surface complexation coupled with reduction. In comparison to Fe@WBC and Fe@SBC, the surface properties and identified phenomenon allowed Fe@CBC to efficiently recover PO43− ions under optimal water chemistry conditions and coexisting interfering species environment. Additionally, PO43- -sorbed Fe@CBC effectively improved the physical growth (root length: 2 cm, shoot length: 9 cm, fresh weight: 79 mg and dry weight: 8.3 mg) of mustard plants. Economic analysis suggested profit of PO43- removal and recovery by Fe@CBC was $1.5 per kg. Therefore, PO43- -sorbed Fe@CBC could be a promising phosphatic fertilizer for improving plant growth and may have agricultural applications.","PeriodicalId":11899,"journal":{"name":"Environmental Technology and Innovation","volume":"14 2","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Adsorptive recovery of phosphate using iron functionalized biochar prepared via co-pyrolysis of wheat straw and sewage sludge\",\"authors\":\"Iqra Irfan, Muhammad Ali Inam, Waleed Usmani, Rashid Iftikhar, Zaib Jahan\",\"doi\":\"10.1016/j.eti.2023.103434\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In recent years, the removal and recovery of phosphate (PO43−) from freshwater reservoirs using carbonaceous adsorbents has received much attention to address eutrophication issues and plant phosphate requirements. The viability of FeCl3 impregnated biochar (Fe@CBC) synthesized via co-pyrolysis of wheat straw (WS) and sewage sludge (SS) for phosphate removal from water under systematically designed sorption experiments and its subsequent potential as phosphatic fertilizer for improving plant growth, was thoroughly investigated in this study. The relatively higher PO43− sorption performance of Fe@CBC (5.23 mg/g) compared to FeCl3 impregnated biochars (Fe@WBC: 4.16 mg/g and Fe@SBC: 5.14 mg/g) synthesized via separate pyrolysis of WS and SS were primarily ascribed to the nano porous structure, higher point of zero charge (pHpzc) and enriched iron complexes on its surface (Fe-OH and FeC). Consequently, dominant sorption mechanism of PO43− ions towards Fe@WBC was associated to ligand exchange and chemisorption whereas that of Fe@SBC and Fe@CBC was identified as electrostatic surface complexation coupled with reduction. In comparison to Fe@WBC and Fe@SBC, the surface properties and identified phenomenon allowed Fe@CBC to efficiently recover PO43− ions under optimal water chemistry conditions and coexisting interfering species environment. Additionally, PO43- -sorbed Fe@CBC effectively improved the physical growth (root length: 2 cm, shoot length: 9 cm, fresh weight: 79 mg and dry weight: 8.3 mg) of mustard plants. Economic analysis suggested profit of PO43- removal and recovery by Fe@CBC was $1.5 per kg. Therefore, PO43- -sorbed Fe@CBC could be a promising phosphatic fertilizer for improving plant growth and may have agricultural applications.\",\"PeriodicalId\":11899,\"journal\":{\"name\":\"Environmental Technology and Innovation\",\"volume\":\"14 2\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-11-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Technology and Innovation\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1016/j.eti.2023.103434\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Technology and Innovation","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1016/j.eti.2023.103434","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Adsorptive recovery of phosphate using iron functionalized biochar prepared via co-pyrolysis of wheat straw and sewage sludge
In recent years, the removal and recovery of phosphate (PO43−) from freshwater reservoirs using carbonaceous adsorbents has received much attention to address eutrophication issues and plant phosphate requirements. The viability of FeCl3 impregnated biochar (Fe@CBC) synthesized via co-pyrolysis of wheat straw (WS) and sewage sludge (SS) for phosphate removal from water under systematically designed sorption experiments and its subsequent potential as phosphatic fertilizer for improving plant growth, was thoroughly investigated in this study. The relatively higher PO43− sorption performance of Fe@CBC (5.23 mg/g) compared to FeCl3 impregnated biochars (Fe@WBC: 4.16 mg/g and Fe@SBC: 5.14 mg/g) synthesized via separate pyrolysis of WS and SS were primarily ascribed to the nano porous structure, higher point of zero charge (pHpzc) and enriched iron complexes on its surface (Fe-OH and FeC). Consequently, dominant sorption mechanism of PO43− ions towards Fe@WBC was associated to ligand exchange and chemisorption whereas that of Fe@SBC and Fe@CBC was identified as electrostatic surface complexation coupled with reduction. In comparison to Fe@WBC and Fe@SBC, the surface properties and identified phenomenon allowed Fe@CBC to efficiently recover PO43− ions under optimal water chemistry conditions and coexisting interfering species environment. Additionally, PO43- -sorbed Fe@CBC effectively improved the physical growth (root length: 2 cm, shoot length: 9 cm, fresh weight: 79 mg and dry weight: 8.3 mg) of mustard plants. Economic analysis suggested profit of PO43- removal and recovery by Fe@CBC was $1.5 per kg. Therefore, PO43- -sorbed Fe@CBC could be a promising phosphatic fertilizer for improving plant growth and may have agricultural applications.