Remove and recover phosphorus during anaerobic digestion of excess sludge by adding waste iron scrap
In the current investigation, the feasibility of phosphorus removal in the anaerobic digestion of excess sludge by adding waste iron scrap (WIS) was studied. The results show that the removal efficiency of phosphorus increases with the amount of WIS, and the maximum removal efficiency could reach...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Serbian Chemical Society
2013-01-01
|
| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2013/0352-51391200057Z.pdf |
| _version_ | 1819115647609602048 |
|---|---|
| author | Zheng Wei Li Xiao Ming Wang Dong Bo Yang Qi Luo Kun Jing Yang Guo Zeng Guang Ming |
| author_facet | Zheng Wei Li Xiao Ming Wang Dong Bo Yang Qi Luo Kun Jing Yang Guo Zeng Guang Ming |
| author_sort | Zheng Wei |
| collection | DOAJ |
| description | In the current investigation, the feasibility of phosphorus removal in the anaerobic digestion of excess sludge by adding waste iron scrap (WIS) was studied. The results show that the removal efficiency of phosphorus increases with the amount of WIS, and the maximum removal efficiency could reach 39%, 93% and 99% at WIS dosages of 1, 2 and 3 g/L, respectively. Sterilization greatly decreases the removal efficiency of phosphorus, having only -6%, 53% and 64% at WIS dosages of 1, 2 and 3 g/L, respectively. This means that iron-reducing bacteria and hydrolytic bacteria enhance 45%, 40% and 35% of phosphorus removal at WIS dosages of 1, 2 and 3 g/L, respectively. The first and the most important mechanism of phosphorus removal using WIS is hydrolytic bacteria, which reduce the pH of sludge to corrode the WIS, followed by precipitation of phosphorus by ferrous iron generated from the iron-reducing bacteria. Phosphorus adsorption onto the WIS is the second probable mechanism. The removed phosphorus is recovered up to 56% using magnet. This method is characterized by high removal efficiency, easy and steady operation, low cost, recovery and reuse, making it better than other physical and chemical treatments. |
| first_indexed | 2024-12-22T05:04:31Z |
| format | Article |
| id | doaj.art-7a0826656030430e8fc7be7e7fd9ce00 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 |
| language | English |
| last_indexed | 2024-12-22T05:04:31Z |
| publishDate | 2013-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-7a0826656030430e8fc7be7e7fd9ce002022-12-21T18:38:08ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51392013-01-0178230331210.2298/JSC120205057ZRemove and recover phosphorus during anaerobic digestion of excess sludge by adding waste iron scrapZheng WeiLi Xiao MingWang Dong BoYang QiLuo KunJing Yang GuoZeng Guang MingIn the current investigation, the feasibility of phosphorus removal in the anaerobic digestion of excess sludge by adding waste iron scrap (WIS) was studied. The results show that the removal efficiency of phosphorus increases with the amount of WIS, and the maximum removal efficiency could reach 39%, 93% and 99% at WIS dosages of 1, 2 and 3 g/L, respectively. Sterilization greatly decreases the removal efficiency of phosphorus, having only -6%, 53% and 64% at WIS dosages of 1, 2 and 3 g/L, respectively. This means that iron-reducing bacteria and hydrolytic bacteria enhance 45%, 40% and 35% of phosphorus removal at WIS dosages of 1, 2 and 3 g/L, respectively. The first and the most important mechanism of phosphorus removal using WIS is hydrolytic bacteria, which reduce the pH of sludge to corrode the WIS, followed by precipitation of phosphorus by ferrous iron generated from the iron-reducing bacteria. Phosphorus adsorption onto the WIS is the second probable mechanism. The removed phosphorus is recovered up to 56% using magnet. This method is characterized by high removal efficiency, easy and steady operation, low cost, recovery and reuse, making it better than other physical and chemical treatments.http://www.doiserbia.nb.rs/img/doi/0352-5139/2013/0352-51391200057Z.pdfwaste iron scrapphosphorus removalexcess sludgeanaerobic digestion |
| spellingShingle | Zheng Wei Li Xiao Ming Wang Dong Bo Yang Qi Luo Kun Jing Yang Guo Zeng Guang Ming Remove and recover phosphorus during anaerobic digestion of excess sludge by adding waste iron scrap Journal of the Serbian Chemical Society waste iron scrap phosphorus removal excess sludge anaerobic digestion |
| title | Remove and recover phosphorus during anaerobic digestion of excess sludge by adding waste iron scrap |
| title_full | Remove and recover phosphorus during anaerobic digestion of excess sludge by adding waste iron scrap |
| title_fullStr | Remove and recover phosphorus during anaerobic digestion of excess sludge by adding waste iron scrap |
| title_full_unstemmed | Remove and recover phosphorus during anaerobic digestion of excess sludge by adding waste iron scrap |
| title_short | Remove and recover phosphorus during anaerobic digestion of excess sludge by adding waste iron scrap |
| title_sort | remove and recover phosphorus during anaerobic digestion of excess sludge by adding waste iron scrap |
| topic | waste iron scrap phosphorus removal excess sludge anaerobic digestion |
| url | http://www.doiserbia.nb.rs/img/doi/0352-5139/2013/0352-51391200057Z.pdf |
| work_keys_str_mv | AT zhengwei removeandrecoverphosphorusduringanaerobicdigestionofexcesssludgebyaddingwasteironscrap AT lixiaoming removeandrecoverphosphorusduringanaerobicdigestionofexcesssludgebyaddingwasteironscrap AT wangdongbo removeandrecoverphosphorusduringanaerobicdigestionofexcesssludgebyaddingwasteironscrap AT yangqi removeandrecoverphosphorusduringanaerobicdigestionofexcesssludgebyaddingwasteironscrap AT luokun removeandrecoverphosphorusduringanaerobicdigestionofexcesssludgebyaddingwasteironscrap AT jingyangguo removeandrecoverphosphorusduringanaerobicdigestionofexcesssludgebyaddingwasteironscrap AT zengguangming removeandrecoverphosphorusduringanaerobicdigestionofexcesssludgebyaddingwasteironscrap |