Decoration of Mg/Fe layered double hydroxides on coffee waste biochars for enhanced adsorption and selectivity of phosphate ions: Mechanistic studies
This study rigorously evaluated the viability of Mg/Fe layered double hydroxides (LDH) decorated biochars produced from coffee wastes (MF-L@CB) for the selective and effectual adsorption of phosphate (PO43-) ions. A higher adsorption capacity of MF-L@CB (6.6 mg/g) toward PO43- ions than coffee waste...
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| Language: | English |
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Elsevier
2025-01-01
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| Series: | Desalination and Water Treatment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1944398625000062 |
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| author | Jaegwan Shin Hojung Rho Yeonjung Cho Jinwoo Kwak Changgil Son Sangwon Kim Seohyun Ki Yong-Gu Lee Hee-Joong Kim Sang-Ho Lee Yongeun Park Kangmin Chon |
| author_facet | Jaegwan Shin Hojung Rho Yeonjung Cho Jinwoo Kwak Changgil Son Sangwon Kim Seohyun Ki Yong-Gu Lee Hee-Joong Kim Sang-Ho Lee Yongeun Park Kangmin Chon |
| author_sort | Jaegwan Shin |
| collection | DOAJ |
| description | This study rigorously evaluated the viability of Mg/Fe layered double hydroxides (LDH) decorated biochars produced from coffee wastes (MF-L@CB) for the selective and effectual adsorption of phosphate (PO43-) ions. A higher adsorption capacity of MF-L@CB (6.6 mg/g) toward PO43- ions than coffee waste biochars (CB; 2.4 mg/g) was mainly because of the increased metal and anion components through the Mg/Fe LDH decoration. Based on the obtained experimental results, the adsorptive removal of PO43- ions by CB and MF-L@CB was chiefly governed by chemisorption and intra-particle diffusion. In addition, the removal of PO43- ions by CB and MF-L@CB occurred endothermically and spontaneously. The variations in the main adsorptive removal mechanisms of PO43- ions by CB from the ligand exchange with alcohol functional groups to the anion exchange with Cl and electrostatic surface complexation with metal contents via the Mg/Fe LDH decoration could significantly improve the selectivity of PO43- ions (decreasing rate of Qe under the co-existing anions: CB = 26.7–98.7 % and MF-L@CB = 1.9–44.2 %). Hence, the decoration of the Mg/Fe LDH particles on the surfaces of CB might be a promising method to improve the adsorption capacity and selectivity of PO43- ions. |
| format | Article |
| id | doaj-art-7b0302aa991b486195ba96fa01a99c04 |
| institution | DOAJ |
| issn | 1944-3986 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Desalination and Water Treatment |
| spelling | doaj-art-7b0302aa991b486195ba96fa01a99c042025-08-20T02:45:55ZengElsevierDesalination and Water Treatment1944-39862025-01-0132110099010.1016/j.dwt.2025.100990Decoration of Mg/Fe layered double hydroxides on coffee waste biochars for enhanced adsorption and selectivity of phosphate ions: Mechanistic studiesJaegwan Shin0Hojung Rho1Yeonjung Cho2Jinwoo Kwak3Changgil Son4Sangwon Kim5Seohyun Ki6Yong-Gu Lee7Hee-Joong Kim8Sang-Ho Lee9Yongeun Park10Kangmin Chon11Department of Integrated Energy and Infra system, Kangwon National University, Kangwondaehak-gil, 1, Chuncheon-si, Gangwon-do 24341, Republic of KoreaDepartment of Environment Research, Korea Institute of Civil Engineering and Building Technology, 283 Goyang-Daero, Ilsanseo-Gu, Goyang-Si, Gyeonggi-Do 10223, Republic of KoreaDepartment of Environmental Engineering, College of Engineering, Kangwon National University, Kangwondaehak-gil, 1, Chuncheon-si, Gangwon-do 24341, Republic of Korea; National Institute of Environmental Research, Han River Environment Research Center, 42, Dumulmeori-gil 68beon-gil, Yangseo-myeon, Yangpyeong-gun, Gyeonggi-do 12585, Republic of KoreaDepartment of Integrated Energy and Infra system, Kangwon National University, Kangwondaehak-gil, 1, Chuncheon-si, Gangwon-do 24341, Republic of KoreaDepartment of Integrated Energy and Infra system, Kangwon National University, Kangwondaehak-gil, 1, Chuncheon-si, Gangwon-do 24341, Republic of KoreaDepartment of Integrated Energy and Infra system, Kangwon National University, Kangwondaehak-gil, 1, Chuncheon-si, Gangwon-do 24341, Republic of KoreaDepartment of Integrated Energy and Infra system, Kangwon National University, Kangwondaehak-gil, 1, Chuncheon-si, Gangwon-do 24341, Republic of KoreaDepartment of Environmental Engineering, College of Engineering, Kangwon National University, Kangwondaehak-gil, 1, Chuncheon-si, Gangwon-do 24341, Republic of Korea; Puricyclesolution, 1 Kangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Republic of KoreaDepartment of Environmental Engineering, College of Engineering, Kangwon National University, Kangwondaehak-gil, 1, Chuncheon-si, Gangwon-do 24341, Republic of Korea; Puricyclesolution, 1 Kangwondaehak-gil, Chuncheon-si, Gangwon-do 24341, Republic of KoreaRadioactive Waste Disposal Research Division, Korea Atomic Energy Research Institute, Daejeon, 34057, Republic of KoreaSchool of Civil and Environmental Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, Republic of KoreaDepartment of Environmental Engineering, College of Engineering, Kangwon National University, Kangwondaehak-gil, 1, Chuncheon-si, Gangwon-do 24341, Republic of Korea; Corresponding author.This study rigorously evaluated the viability of Mg/Fe layered double hydroxides (LDH) decorated biochars produced from coffee wastes (MF-L@CB) for the selective and effectual adsorption of phosphate (PO43-) ions. A higher adsorption capacity of MF-L@CB (6.6 mg/g) toward PO43- ions than coffee waste biochars (CB; 2.4 mg/g) was mainly because of the increased metal and anion components through the Mg/Fe LDH decoration. Based on the obtained experimental results, the adsorptive removal of PO43- ions by CB and MF-L@CB was chiefly governed by chemisorption and intra-particle diffusion. In addition, the removal of PO43- ions by CB and MF-L@CB occurred endothermically and spontaneously. The variations in the main adsorptive removal mechanisms of PO43- ions by CB from the ligand exchange with alcohol functional groups to the anion exchange with Cl and electrostatic surface complexation with metal contents via the Mg/Fe LDH decoration could significantly improve the selectivity of PO43- ions (decreasing rate of Qe under the co-existing anions: CB = 26.7–98.7 % and MF-L@CB = 1.9–44.2 %). Hence, the decoration of the Mg/Fe LDH particles on the surfaces of CB might be a promising method to improve the adsorption capacity and selectivity of PO43- ions.http://www.sciencedirect.com/science/article/pii/S1944398625000062BiocharsCoffee wastesPhosphorusMg/Fe layered double hydroxidesAdsorption mechanisms |
| spellingShingle | Jaegwan Shin Hojung Rho Yeonjung Cho Jinwoo Kwak Changgil Son Sangwon Kim Seohyun Ki Yong-Gu Lee Hee-Joong Kim Sang-Ho Lee Yongeun Park Kangmin Chon Decoration of Mg/Fe layered double hydroxides on coffee waste biochars for enhanced adsorption and selectivity of phosphate ions: Mechanistic studies Desalination and Water Treatment Biochars Coffee wastes Phosphorus Mg/Fe layered double hydroxides Adsorption mechanisms |
| title | Decoration of Mg/Fe layered double hydroxides on coffee waste biochars for enhanced adsorption and selectivity of phosphate ions: Mechanistic studies |
| title_full | Decoration of Mg/Fe layered double hydroxides on coffee waste biochars for enhanced adsorption and selectivity of phosphate ions: Mechanistic studies |
| title_fullStr | Decoration of Mg/Fe layered double hydroxides on coffee waste biochars for enhanced adsorption and selectivity of phosphate ions: Mechanistic studies |
| title_full_unstemmed | Decoration of Mg/Fe layered double hydroxides on coffee waste biochars for enhanced adsorption and selectivity of phosphate ions: Mechanistic studies |
| title_short | Decoration of Mg/Fe layered double hydroxides on coffee waste biochars for enhanced adsorption and selectivity of phosphate ions: Mechanistic studies |
| title_sort | decoration of mg fe layered double hydroxides on coffee waste biochars for enhanced adsorption and selectivity of phosphate ions mechanistic studies |
| topic | Biochars Coffee wastes Phosphorus Mg/Fe layered double hydroxides Adsorption mechanisms |
| url | http://www.sciencedirect.com/science/article/pii/S1944398625000062 |
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