Dynamics of microbial community structure and nutrient removal from an innovative side-stream enhanced biological phosphorus removal process

Islam, Md. Shahinoor; Zhang, Yanyan; Dong, Shimiao; McPhedran, Kerry N.; Rashed, Ehab M.; Elshafei, Mohamed; Noureldin, Ahmed M.; El-Din, Mohamed Gamal

doi:10.1016/j.jenvman.2017.04.074

Cited by 25 publications

(7 citation statements)

References 33 publications

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“…Most of the ammonia-oxidizing bacteria (AOB) and nitrite-oxidizing bacteria 66 that are responsible for nitrogen removal belong to the Proteobacteria phyla, which explains the enhanced nitrogen removal ability of mature AGS. 88,89 Most Actinobacteria phyla are filamentous Gram-positive bacteria that can trap and immobilize free microbial cells, confirming that filamentous bacteria had positive effects on AGS fixation and structural stabilities. 90 As autotrophic microorganisms, Bacteroidetes can effectively degrade, absorb and utilize macromolecular organics, including proteins, thereby promoting the pollutant removal efficiency of the system.…”

Section: Microbial Community Analysismentioning

confidence: 92%

Addition of sodium alginate as a nucleus shortens granulation of aerobic sludge

Tang

Chen

et al. 2022

Environ. Sci.: Water Res. Technol.

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Section: Microbial Community Analysismentioning

confidence: 92%

Addition of sodium alginate as a nucleus shortens granulation of aerobic sludge

Tang

Chen

et al. 2022

Environ. Sci.: Water Res. Technol.

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“…Significant efforts have been made by scientists worldwide to find ways to lower the phosphate concentration in wastewater (Viglasova et al 2018). Several techniques such as crystallization (Le Corre et al 2009), membrane separation (Arola et al 2021), chemical precipitation (Caravelli et al 2012), biological (Islam et al 2017), and adsorption (Melia et al 2019) have been adopted to remove phosphate in wastewater. The control of phosphate levels using the adsorption method is of increasing interest due to its expected ability to realize P recovery and utilization through desorption to enhance P eutrophication mitigation (Bacelo et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Formable porous biochar loaded with La-Fe(hydr)oxides/montmorillonite for efficient removal of phosphorus in wastewater: process and mechanisms

Sun

Zhang

Xiao

et al. 2022

Biochar

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The development of biochar-based granule-like adsorbents suitable for scaled-up application has been attracting increasing attention in the field of water treatment. Herein, a new formable porous granulated biochar loaded with La-Fe(hydr)oxides/montmorillonite (LaFe/MB) was fabricated via a granulation and pyrolysis process for enhanced phosphorus (P) removal from wastewater. Montmorillonite acted as a binder that increased the size of the granulated biochar, while the use of Fe promoted the surface charge and facilitated the dispersion of La, which was responsible for selective phosphate removal. LaFe/MB exhibited rapid phosphate adsorption kinetics and a high maximum adsorption capacity (Langmuir model, 52.12 mg P g−1), which were better than those of many existing granulated materials. The desorption and recyclability experiments showed that LaFe/MB could be regenerated, and maintained 76.7% of its initial phosphate adsorption capacity after four adsorption cycles. The high hydraulic endurance strength retention rate of the developed material (91.6%) suggested high practical applicability in actual wastewater. Electrostatic attraction, surface precipitation, and inner-sphere complexation via ligand exchange were found to be involved in selective P removal over a wide pH range of 3–9. The thermodynamic parameters were determined, which revealed the feasibility and spontaneity of adsorption. Based on approximate site energy distribution analyses, high distribution frequency contributed to efficient P removal. The research results provide a new insight that LaFe/MB shows great application prospects for advanced phosphate removal from wastewater. Graphical Abstract

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“…Phosphorus removal by using phosphate-accumulating bacteria is also widely used in the wastewater treatment process, but phosphorus removal is limited by bacteria and wastewater conditions. Furthermore, this approach produces excess sludge containing high concentrations of phosphorus and pollutants, such as heavy metals, which are very difficult and costly to treat 11), 12), 13) . Both methods are widely used these days; however, both of them have disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Development of Continuous System Based on Nanoscale Zero Valent Iron Particles for Phosphorus Removal

et al. 2019

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Nanoscale Zero Valent Iron (NZVI) is one of the materials that have gained attention in the field of water treatment and environmental remediation in recent years. The main purpose of this study is to develop and evaluate a phosphorus removal system using NZVI particles. The NZVI used for the experiments was synthesized under optimum conditions using the chemical reduction method. This continuous system consisted of Continuous Stirred Flask Reactor (CSFR), settler, polishing unit, and sand column. The continuous experiment showed that 73.84% phosphorus was removed mainly at CSFR. Further, 80.62% total iron was removed and recycled at the settler. Based on the continuous operation results, there was a strong relationship between iron concentration and ORP value (R 2 = 0.9969). This result indicated that ORP would be an important monitoring parameter while operating the continuous system. The aerobic condition contributed the highest phosphorus overall removal efficiency (91.37%) due to the enhancement of iron corrosion. Copper bimetal particles also achieved the highest removal efficiency (94.96%) after increasing the active site and decreasing the solution pH. Finally, comparing the aerobic and bimetallic cases, we concluded that the bimetallic case is the best condition for removing phosphorus because it could treat large solution volume than the aerobic one could.

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Dynamics of microbial community structure and nutrient removal from an innovative side-stream enhanced biological phosphorus removal process

Cited by 25 publications

References 33 publications

Addition of sodium alginate as a nucleus shortens granulation of aerobic sludge

Addition of sodium alginate as a nucleus shortens granulation of aerobic sludge

Formable porous biochar loaded with La-Fe(hydr)oxides/montmorillonite for efficient removal of phosphorus in wastewater: process and mechanisms

Development of Continuous System Based on Nanoscale Zero Valent Iron Particles for Phosphorus Removal

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