Phosphate removal via biological process coupling with hydroxyapatite crystallization in alternating anaerobic/aerobic biofilter reactor

Sun, Shaofang; Gao, Mingchang; Wang, Yue; Qiu, Qi; Han, Junli; Qiu, Liping; Feng, Yi

doi:10.1016/j.biortech.2021.124728

Cited by 32 publications

(9 citation statements)

References 37 publications

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“… 24 The affinity of HA for microorganisms allows a high enrichment of anaerobic microorganisms, which can provide better conditions for bioH 2 production. 25 However, high concentrations of additives can lead to oxidative stress and cell membrane rupture. 26 High doses of HA (>400 mg/L) can thus disrupt the granular sludge structure and create an unfavorable environment for bioH 2 operation.…”

Section: Resultsmentioning

confidence: 99%

“…A similar observation was obtained in the fermentation of Ca 2+ granular sludge for bioH 2 production . The affinity of HA for microorganisms allows a high enrichment of anaerobic microorganisms, which can provide better conditions for bioH 2 production . However, high concentrations of additives can lead to oxidative stress and cell membrane rupture .…”

Section: Resultsmentioning

confidence: 99%

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Hydroxyapatite Fabrication for Enhancing Biohydrogen Production from Glucose Dark Fermentation

Wang

et al. 2022

ACS Omega

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Hydroxyapatite (HA) had the effect of maintaining the pH balance of the reaction system and promoting enzyme activity. In this work, hydroxyapatite was synthesized by coprecipitation and characterized for biohydrogen (bioH 2 ) production from glucose. The highest bioH 2 yield obtained was 182.33 ± 2.41 mL/g glucose, amended with an optimal dosage of 400 mg/L HA, which was a 55.80% higher bioH 2 yield compared with the control group without any addition. The results indicated that HA facilitated the deterioration of organic substances and increased the concentration of soluble microbial products (SMPs). Microbial community analysis revealed that HA significantly increased the abundance of Firmicutes from 35.27% (0 mg/L, HA) to 76.41% (400 mg/L, HA), which played an essential role in bioH 2 generation. In particular, the abundance of Clostridium sensu stricto 1 increased from 15.33% (0 mg/L HA) to 45.17% (400 mg/L HA) and became the dominant bacteria. The results also indicated that HA likely improves bioH 2 production from organic wastewater in practice.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Hydroxyapatite Fabrication for Enhancing Biohydrogen Production from Glucose Dark Fermentation

Wang

et al. 2022

ACS Omega

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“…e removal efficiencies of color [22], phosphate [42], TDS [43], COD [36,44], and BOD [44] were calculated using equations ((1)-( 5)).…”

Section: Discussionmentioning

confidence: 99%

“…Different empirical formulas were used for the analysis of surface water characteristics based on the initial and final concentrations of pollutants. The removal efficiencies of color [ 22 ], phosphate [ 42 ], TDS [ 43 ], COD [ 36 , 44 ], and BOD [ 44 ] were calculated using equations (( 1 )–( 5 )).

where, Abs i and Abs f are initial and final absorbance.…”

Section: Methodsmentioning

confidence: 99%

Water Treatment Using Natural Coagulant and Electrocoagulation Process: A Comparison Study

Lulesa

Beyene

Bote

et al. 2022

International Journal of Analytical Chemistry

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Water treatment is the primary consideration before utilizing water for different purposes. Surface water is highly vulnerable to pollution, either due to natural or anthropogenic processes. The main targets of this study were to investigate surface water treatment using Moringa Oleifera (MO), the electrocoagulation process (EC), and the Moringa Oleifera assisted electrocoagulation process (MOAEC). The Moringa Oleifera, EC process, and Moringa Oleifera-assisted EC process are effective mechanisms for the removal of COD (Chemical Oxygen Demand), BOD (Biological Oxygen Demand), TDS (Total Dissolved Solids), phosphate, TSS (Total Suspended Solids), and color from surface water. Different operating parameters such as pH (5–11), the dosage of coagulant (0.2–0.5 g), contact time or reaction time (20–50 minutes), current (0.2–0.5 A), and settling time (5–20 minutes) were considered. The maximum removal efficiency using Moringa Oleifera and the EC process was COD (85.48%), BOD (78.50%), TDS (84.5%), phosphate (95.70%), TSS (93.90%), color (94.50%), and COD (90.50%), BOD (87%), TDS (97.50%), phosphate (89.10%), TSS (95.80%), and color (96.15%), respectively. Similarly, with the application of MOAEC, 91.47%, 89.35%, 97.0%, 90.20%, 9.10%, and 95.70% of COD, BOD, TDS, phosphate, TSS, and color were removed, respectively. The EC process and MOAEC were more effective in the removal of COD, BOD, TDS, TSS, and color than using MO. More phosphate was removed using MO than the EC process and MOAEC. Additionally, the effects of different operating parameters were studied on the removal efficiency.

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“… 1 Various methods have been applied to remediate phosphate pollution, including precipitation, 2 adsorption, 3 ion exchange, 4 and biological processes. 5 Adsorption is the most popular of these technologies owing to its economy, efficiency, and reliability. 6,7 In the adsorption method, the choice of adsorbent is crucial.…”

Section: Introductionmentioning

confidence: 99%

Study on adsorption of phosphate from aqueous solution by zirconium modified coal gasification coarse slag

et al. 2022

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Phosphate removal via biological process coupling with hydroxyapatite crystallization in alternating anaerobic/aerobic biofilter reactor

Cited by 32 publications

References 37 publications

Hydroxyapatite Fabrication for Enhancing Biohydrogen Production from Glucose Dark Fermentation

Hydroxyapatite Fabrication for Enhancing Biohydrogen Production from Glucose Dark Fermentation

Water Treatment Using Natural Coagulant and Electrocoagulation Process: A Comparison Study

Study on adsorption of phosphate from aqueous solution by zirconium modified coal gasification coarse slag

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