Analysis of Aerobic Inverse Fluidized Bed Biofilm Reactor (AIFBBR) for Treating Rice Mill Effluents Under Variable Hydraulic Retention Times (HRTs).
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| Title: | Analysis of Aerobic Inverse Fluidized Bed Biofilm Reactor (AIFBBR) for Treating Rice Mill Effluents Under Variable Hydraulic Retention Times (HRTs). |
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| Authors: | Challa, Mallikarjuna1,2 (AUTHOR) challa@post.bgu.ac.il, Dash, Rajesh Roshan1 (AUTHOR) rrdash@iitbbs.ac.in |
| Source: | Water, Air & Soil Pollution. Mar2026, Vol. 237 Issue 6, p1-16. 16p. |
| Subject Terms: | *Wastewater treatment, *Organic compounds, *Chemical oxygen demand, *Biological nutrient removal, Biofilms, Rice processing |
| Abstract: | This paper presents the effect of hydraulic retention times (HRT) variations while treating the rice mill wastewater (simulated) in the aerobic inverse fluidized bed biofilm reactor (AIFBBR). For the current AIFBBR system, low-density K5 media was used as the bio-support. The aspects related to hydrodynamic parameters (minimum fluidization velocity (Umf), gas hold up (εg), and superficial airflow velocity (Ug)) of the K5 media concerning the AIFBBR system were furnished in the study. The present AIFBBR system resulted in a minimum Umf of 0.000231 m/s for the bio-support. HRT values of 6 h, 12 h, 18 h, and 24 h were considered for the current study with 30% bed volume. Maximum removal of 92.74% and 94.42% of chemical oxygen demand (COD) and total organic carbon (TOC) was observed for 24 h HRT. A good amount of NH4+-N removal was observed in the study; however, the PO43−-P was not removed much. The study has also yielded the attached biomass of 16.63–25.79 mg/bioparticle, 508–672 mg/L of suspended biomass, and a sludge volume index value (SVI) of 43.31–156.25 ml/g. Parameters such as NO3−-N and lignin were also monitored throughout the study. Highlights: The low-density K5 media was used in the present aerobic inverse fluidized bed biofilm reactor (AIFBBR) study. The variation of the hydrodynamic parameters (minimum fluidization, phase holdup, and gas holdup) with %bed volume are included. Along with the COD, TOC, and lignin, variations of nutrients such as PO43−-P, NH4+-N, and NO3−-N were included in the study. Both the attached and suspended biosolids characteristics were monitored in the study. [ABSTRACT FROM AUTHOR] |
| Copyright of Water, Air & Soil Pollution is the property of Springer Nature 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: | GreenFILE |
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| Header | DbId: 8gh DbLabel: GreenFILE An: 191451522 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Analysis of Aerobic Inverse Fluidized Bed Biofilm Reactor (AIFBBR) for Treating Rice Mill Effluents Under Variable Hydraulic Retention Times (HRTs). – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Challa%2C+Mallikarjuna%22">Challa, Mallikarjuna</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> challa@post.bgu.ac.il</i><br /><searchLink fieldCode="AR" term="%22Dash%2C+Rajesh+Roshan%22">Dash, Rajesh Roshan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> rrdash@iitbbs.ac.in</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Water%2C+Air+%26+Soil+Pollution%22">Water, Air & Soil Pollution</searchLink>. Mar2026, Vol. 237 Issue 6, p1-16. 16p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Wastewater+treatment%22">Wastewater treatment</searchLink><br />*<searchLink fieldCode="DE" term="%22Organic+compounds%22">Organic compounds</searchLink><br />*<searchLink fieldCode="DE" term="%22Chemical+oxygen+demand%22">Chemical oxygen demand</searchLink><br />*<searchLink fieldCode="DE" term="%22Biological+nutrient+removal%22">Biological nutrient removal</searchLink><br /><searchLink fieldCode="DE" term="%22Biofilms%22">Biofilms</searchLink><br /><searchLink fieldCode="DE" term="%22Rice+processing%22">Rice processing</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper presents the effect of hydraulic retention times (HRT) variations while treating the rice mill wastewater (simulated) in the aerobic inverse fluidized bed biofilm reactor (AIFBBR). For the current AIFBBR system, low-density K5 media was used as the bio-support. The aspects related to hydrodynamic parameters (minimum fluidization velocity (Umf), gas hold up (εg), and superficial airflow velocity (Ug)) of the K5 media concerning the AIFBBR system were furnished in the study. The present AIFBBR system resulted in a minimum Umf of 0.000231 m/s for the bio-support. HRT values of 6 h, 12 h, 18 h, and 24 h were considered for the current study with 30% bed volume. Maximum removal of 92.74% and 94.42% of chemical oxygen demand (COD) and total organic carbon (TOC) was observed for 24 h HRT. A good amount of NH4+-N removal was observed in the study; however, the PO43−-P was not removed much. The study has also yielded the attached biomass of 16.63–25.79 mg/bioparticle, 508–672 mg/L of suspended biomass, and a sludge volume index value (SVI) of 43.31–156.25 ml/g. Parameters such as NO3−-N and lignin were also monitored throughout the study. Highlights: The low-density K5 media was used in the present aerobic inverse fluidized bed biofilm reactor (AIFBBR) study. The variation of the hydrodynamic parameters (minimum fluidization, phase holdup, and gas holdup) with %bed volume are included. Along with the COD, TOC, and lignin, variations of nutrients such as PO43−-P, NH4+-N, and NO3−-N were included in the study. Both the attached and suspended biosolids characteristics were monitored in the study. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Water, Air & Soil Pollution is the property of Springer Nature 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: 10.1007/s11270-025-09043-2 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 1 Subjects: – SubjectFull: Wastewater treatment Type: general – SubjectFull: Organic compounds Type: general – SubjectFull: Chemical oxygen demand Type: general – SubjectFull: Biological nutrient removal Type: general – SubjectFull: Biofilms Type: general – SubjectFull: Rice processing Type: general Titles: – TitleFull: Analysis of Aerobic Inverse Fluidized Bed Biofilm Reactor (AIFBBR) for Treating Rice Mill Effluents Under Variable Hydraulic Retention Times (HRTs). Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Challa, Mallikarjuna – PersonEntity: Name: NameFull: Dash, Rajesh Roshan IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 03 Text: Mar2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00496979 Numbering: – Type: volume Value: 237 – Type: issue Value: 6 Titles: – TitleFull: Water, Air & Soil Pollution Type: main |
| ResultId | 1 |
