Study on performance and mechanism of enhanced low-concentration ammonia nitrogen removal from low-temperature wastewater by iron-loaded biological activated carbon filter.
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| Title: | Study on performance and mechanism of enhanced low-concentration ammonia nitrogen removal from low-temperature wastewater by iron-loaded biological activated carbon filter. |
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| Authors: | Ren, Zhijun1 (AUTHOR), Fu, Xiaolin1 (AUTHOR), Zhang, Guangming1 (AUTHOR), Li, Yuyou2 (AUTHOR), Qin, Yu2 (AUTHOR), Wang, Pengfei1 (AUTHOR), Liu, Xiaoyang1 (AUTHOR), Lv, Longyi1 (AUTHOR) lvlongyi@hebut.edu.cn |
| Source: | Journal of Environmental Management. Jan2022, Vol. 301, pN.PAG-N.PAG. 1p. |
| Subjects: | Iron, Sewage purification, Activated carbon, Ferric oxide, Nucleotide sequencing, Ammonia, Sewage, Psychrophilic bacteria |
| Abstract: | In order to strengthen the treatment of low-concentration ammonia nitrogen wastewater at low temperature, iron-loaded activated carbon (Fe-AC) with ultrasonic impregnation method was used as the filter material of biofilter process. The performance and mechanism of ammonia nitrogen removal from simulated secondary wastewater by iron-loaded biological activated carbon filter (Fe-BACF) were studied at 10 °C. The characterization results showed that iron was loaded on the surface of AC in the form of Fe 2 O 3 , and the specific surface area, total pore volume, pore size and alkaline functional group content of Fe-AC were obviously increased. After the formation of biofilm on the surface of filter media, the average removal rate of ammonia nitrogen by Fe-BACF (97.9%) was significantly higher than that of conventional BACF (87.8%). The improved surface properties increased the number and metabolic activity of microorganisms, and promoted the secretion of EPS on the surface of Fe-BAC. The results of high-throughput sequencing showed that the existence of Fe optimized the bacterial community structure on the surface of Fe-BAC, with the increase of the abundances of psychrophilic bacteria and ammonia nitrogen removal bacteria. The mechanism of enhanced ammonia nitrogen removal by Fe-BACF was the joint action of many factors, among which the main causal relationship was that modification of iron could optimize the number and category of microorganisms on Fe-BAC surface by improving the surface properties, thus improving the biological nitrogen removal ability. Results of this study provided a practical way for the treatment of low ammonia nitrogen wastewater in cold regions. [Display omitted] • Surface pore size and volume of iron-loaded activated carbon (Fe-AC) became larger. • Fe-BAC filter showed better ammonia nitrogen removal capacity at low temperature. • More biomass and stronger biological activity appeared on the surface of Fe-BAC. • Modification of Fe promoted synthesis of more EPS on the surface of Fe-BAC. • Bacterial community structure on the surface of AC was optimized by Fe modification. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Environmental Management is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 153290503 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Study on performance and mechanism of enhanced low-concentration ammonia nitrogen removal from low-temperature wastewater by iron-loaded biological activated carbon filter. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ren%2C+Zhijun%22">Ren, Zhijun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Fu%2C+Xiaolin%22">Fu, Xiaolin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Guangming%22">Zhang, Guangming</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Yuyou%22">Li, Yuyou</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Qin%2C+Yu%22">Qin, Yu</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Pengfei%22">Wang, Pengfei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Xiaoyang%22">Liu, Xiaoyang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lv%2C+Longyi%22">Lv, Longyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> lvlongyi@hebut.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Environmental+Management%22">Journal of Environmental Management</searchLink>. Jan2022, Vol. 301, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Iron%22">Iron</searchLink><br /><searchLink fieldCode="DE" term="%22Sewage+purification%22">Sewage purification</searchLink><br /><searchLink fieldCode="DE" term="%22Activated+carbon%22">Activated carbon</searchLink><br /><searchLink fieldCode="DE" term="%22Ferric+oxide%22">Ferric oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Nucleotide+sequencing%22">Nucleotide sequencing</searchLink><br /><searchLink fieldCode="DE" term="%22Ammonia%22">Ammonia</searchLink><br /><searchLink fieldCode="DE" term="%22Sewage%22">Sewage</searchLink><br /><searchLink fieldCode="DE" term="%22Psychrophilic+bacteria%22">Psychrophilic bacteria</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In order to strengthen the treatment of low-concentration ammonia nitrogen wastewater at low temperature, iron-loaded activated carbon (Fe-AC) with ultrasonic impregnation method was used as the filter material of biofilter process. The performance and mechanism of ammonia nitrogen removal from simulated secondary wastewater by iron-loaded biological activated carbon filter (Fe-BACF) were studied at 10 °C. The characterization results showed that iron was loaded on the surface of AC in the form of Fe 2 O 3 , and the specific surface area, total pore volume, pore size and alkaline functional group content of Fe-AC were obviously increased. After the formation of biofilm on the surface of filter media, the average removal rate of ammonia nitrogen by Fe-BACF (97.9%) was significantly higher than that of conventional BACF (87.8%). The improved surface properties increased the number and metabolic activity of microorganisms, and promoted the secretion of EPS on the surface of Fe-BAC. The results of high-throughput sequencing showed that the existence of Fe optimized the bacterial community structure on the surface of Fe-BAC, with the increase of the abundances of psychrophilic bacteria and ammonia nitrogen removal bacteria. The mechanism of enhanced ammonia nitrogen removal by Fe-BACF was the joint action of many factors, among which the main causal relationship was that modification of iron could optimize the number and category of microorganisms on Fe-BAC surface by improving the surface properties, thus improving the biological nitrogen removal ability. Results of this study provided a practical way for the treatment of low ammonia nitrogen wastewater in cold regions. [Display omitted] • Surface pore size and volume of iron-loaded activated carbon (Fe-AC) became larger. • Fe-BAC filter showed better ammonia nitrogen removal capacity at low temperature. • More biomass and stronger biological activity appeared on the surface of Fe-BAC. • Modification of Fe promoted synthesis of more EPS on the surface of Fe-BAC. • Bacterial community structure on the surface of AC was optimized by Fe modification. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Environmental Management is the property of Academic Press Inc. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.jenvman.2021.113859 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Iron Type: general – SubjectFull: Sewage purification Type: general – SubjectFull: Activated carbon Type: general – SubjectFull: Ferric oxide Type: general – SubjectFull: Nucleotide sequencing Type: general – SubjectFull: Ammonia Type: general – SubjectFull: Sewage Type: general – SubjectFull: Psychrophilic bacteria Type: general Titles: – TitleFull: Study on performance and mechanism of enhanced low-concentration ammonia nitrogen removal from low-temperature wastewater by iron-loaded biological activated carbon filter. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ren, Zhijun – PersonEntity: Name: NameFull: Fu, Xiaolin – PersonEntity: Name: NameFull: Zhang, Guangming – PersonEntity: Name: NameFull: Li, Yuyou – PersonEntity: Name: NameFull: Qin, Yu – PersonEntity: Name: NameFull: Wang, Pengfei – PersonEntity: Name: NameFull: Liu, Xiaoyang – PersonEntity: Name: NameFull: Lv, Longyi IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: Jan2022 Type: published Y: 2022 Identifiers: – Type: issn-print Value: 03014797 Numbering: – Type: volume Value: 301 Titles: – TitleFull: Journal of Environmental Management Type: main |
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