Effect of nano Fe3O4-(CMC-Na)-PFS coagulant on coagulation–ultrafiltration process for treatment of algae -rich water
A novel composite flocculant (PCNF) was prepared using nano Fe3O4 as the condensed core, sodium carboxymethyl cellulose (CMC-Na) as the binder, and polyferric sulfate (PFS). The results indicate that the mass ratio of Fe3O4 to PFS is the key factor determining the flocculation effect of PCNF. When t...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Desalination and Water Treatment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1944398624003400 |
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| author | Meng Yao Xiaoqing Dong Zhilin Ran Yukun Li Guangzhou Liu Ting Chen |
| author_facet | Meng Yao Xiaoqing Dong Zhilin Ran Yukun Li Guangzhou Liu Ting Chen |
| author_sort | Meng Yao |
| collection | DOAJ |
| description | A novel composite flocculant (PCNF) was prepared using nano Fe3O4 as the condensed core, sodium carboxymethyl cellulose (CMC-Na) as the binder, and polyferric sulfate (PFS). The results indicate that the mass ratio of Fe3O4 to PFS is the key factor determining the flocculation effect of PCNF. When the mass ratio of Fe3O4 to PFS is 1:3, the Zeta potential value is approximately − 1.5 mV, indicating better removal of algae through adsorption electroneutralization. The resulting floc, characterized by negative charge and a loose structure, forms a filter cake layer that is easily backwashed on the surface of the ultrafiltration membrane. This floc also creates strong electrostatic repulsion with the membrane surface. Experimental results demonstrate that the specific flux decreased to 0.69, the total relative pollution was 0.33, and the proportion of irreversible pollution was only 34.65%, all of which were superior to traditional flocculant like PACl. Through microinterface mechanism analysis, it is concluded that the new PCNF flocculant, in combination with algal matter, forms a floc structure critical for mitigating ultrafiltration membrane pollution caused by high algal content in natural surface water. |
| format | Article |
| id | doaj-art-a08d2fb8382d48db88c19efbe51d54d5 |
| institution | DOAJ |
| issn | 1944-3986 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Desalination and Water Treatment |
| spelling | doaj-art-a08d2fb8382d48db88c19efbe51d54d52025-08-20T03:11:30ZengElsevierDesalination and Water Treatment1944-39862024-01-0131710030710.1016/j.dwt.2024.100307Effect of nano Fe3O4-(CMC-Na)-PFS coagulant on coagulation–ultrafiltration process for treatment of algae -rich waterMeng Yao0Xiaoqing Dong1Zhilin Ran2Yukun Li3Guangzhou Liu4Ting Chen5Shenzhen Institute of Information Technology, Shenzhen, Guangdong 518172, ChinaDepartment of Environmental Engineering Technology, Shenzhen Institute of Information Technology, Shenzhen 518172, China; Corresponding author.Shenzhen Institute of Information Technology, Shenzhen, Guangdong 518172, ChinaShenzhen Institute of Information Technology, Shenzhen, Guangdong 518172, ChinaShenzhen Institute of Information Technology, Shenzhen, Guangdong 518172, ChinaGuangdong GDH Water Company Limited, 518021 Shenzhen, ChinaA novel composite flocculant (PCNF) was prepared using nano Fe3O4 as the condensed core, sodium carboxymethyl cellulose (CMC-Na) as the binder, and polyferric sulfate (PFS). The results indicate that the mass ratio of Fe3O4 to PFS is the key factor determining the flocculation effect of PCNF. When the mass ratio of Fe3O4 to PFS is 1:3, the Zeta potential value is approximately − 1.5 mV, indicating better removal of algae through adsorption electroneutralization. The resulting floc, characterized by negative charge and a loose structure, forms a filter cake layer that is easily backwashed on the surface of the ultrafiltration membrane. This floc also creates strong electrostatic repulsion with the membrane surface. Experimental results demonstrate that the specific flux decreased to 0.69, the total relative pollution was 0.33, and the proportion of irreversible pollution was only 34.65%, all of which were superior to traditional flocculant like PACl. Through microinterface mechanism analysis, it is concluded that the new PCNF flocculant, in combination with algal matter, forms a floc structure critical for mitigating ultrafiltration membrane pollution caused by high algal content in natural surface water.http://www.sciencedirect.com/science/article/pii/S1944398624003400High algal waterNano-Fe3O4Polyferric sulfateUltrafiltration membraneMembrane fouling |
| spellingShingle | Meng Yao Xiaoqing Dong Zhilin Ran Yukun Li Guangzhou Liu Ting Chen Effect of nano Fe3O4-(CMC-Na)-PFS coagulant on coagulation–ultrafiltration process for treatment of algae -rich water Desalination and Water Treatment High algal water Nano-Fe3O4 Polyferric sulfate Ultrafiltration membrane Membrane fouling |
| title | Effect of nano Fe3O4-(CMC-Na)-PFS coagulant on coagulation–ultrafiltration process for treatment of algae -rich water |
| title_full | Effect of nano Fe3O4-(CMC-Na)-PFS coagulant on coagulation–ultrafiltration process for treatment of algae -rich water |
| title_fullStr | Effect of nano Fe3O4-(CMC-Na)-PFS coagulant on coagulation–ultrafiltration process for treatment of algae -rich water |
| title_full_unstemmed | Effect of nano Fe3O4-(CMC-Na)-PFS coagulant on coagulation–ultrafiltration process for treatment of algae -rich water |
| title_short | Effect of nano Fe3O4-(CMC-Na)-PFS coagulant on coagulation–ultrafiltration process for treatment of algae -rich water |
| title_sort | effect of nano fe3o4 cmc na pfs coagulant on coagulation ultrafiltration process for treatment of algae rich water |
| topic | High algal water Nano-Fe3O4 Polyferric sulfate Ultrafiltration membrane Membrane fouling |
| url | http://www.sciencedirect.com/science/article/pii/S1944398624003400 |
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