Periphytic biofilm: A buffer for phosphorus precipitation and release between sediments and water

Lu, Haiying; Wan, Juanjuan; Li, Jiuyu; Shao, Hongbo; Wu, Yonghong

doi:10.1016/j.chemosphere.2015.10.129

Cited by 82 publications

(29 citation statements)

References 51 publications

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“…Biofilms, referred to as "cities of microbes" (Nikolaev & Plakunov, 2007;Watnick & Kolter, 2000) comprising bacteria, fungi, and algae (Lock, 1993), are known to affect and be affected by fine sediment dynamics (Aspray, Holden, Ledger, Mainstone, & Brown, 2017;Cheng, Fang, Lai, Huang, & Dey, 2017;Fang, Chen, Huang, & He, 2017;Madsen, 2011). Although the important function biofilms fulfill in wastewater processing has long been known, it was not until more recently that research began to focus on their role in the processing and fate of fine sediment-bound contaminants in freshwater ecosystems (Gainswin, House, Leadbeater, Armitage, & Patten, 2006;Garwood, Hill, & Law, 2013;Horton, Walton, Spurgeon, Lahive, & Svendsen, 2017;Lu, Wan, Li, Shao, & Wu, 2016;Rummel, Jahnke, Gorokhova, Kühnel, & Schmitt-Jansen, 2017). The matrix of the biofilm microenvironment is comprised mostly of extracellular polymeric substances (EPS) (Flemming, Neu, & Wozniak, 2007;Wingender, Neu, & Flemming, 1999), which are synthesized by the biofilm microbial community.…”

Section: Biotic Controls On Fine Sediment Transport and Storagementioning

confidence: 99%

Physical and biological controls on fine sediment transport and storage in rivers

et al. 2018

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Excess fine sediment, comprising particles <2 mm in diameter, is a major cause of ecological degradation in rivers. The erosion of fine sediment from terrestrial or aquatic sources, its delivery to the river, and its storage and transport in the fluvial environment are controlled by a complex interplay of physical, biological, and anthropogenic factors. While the physical controls exerted on fine sediment dynamics are relatively well‐documented, the role of biological processes and their interactions with hydraulic and physicochemical phenomena has been largely overlooked. The activities of biota, from primary producers to predators, exert strong controls on fine sediment deposition, infiltration, and resuspension. For example, extracellular polymeric substances associated with biofilms increase deposition and decrease resuspension. In lower energy rivers, aquatic macrophyte growth and senescence are intimately linked to sediment retention and loss, whereas riparian trees are dominant ecosystem engineers in high energy systems. Fish and invertebrates also have profound effects on fine sediment dynamics through activities that drive both particle deposition and erosion depending on species composition and abiotic conditions. The functional traits of species present will determine not only these biotic effects but also the responses of river ecosystems to excess fine sediment. We discuss which traits are involved and put them into context with spatial processes that occur throughout the river network. While strides towards better understanding of the impacts of excess fine sediment have been made, further progress to identify the most effective management approaches is urgently required through close communication between authorities and scientists. This article is categorized under: Water and Life > Nature of Freshwater Ecosystems Water and Life > Stresses and Pressures on Ecosystems Science of Water > Water Quality

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Section: Biotic Controls On Fine Sediment Transport and Storagementioning

confidence: 99%

Physical and biological controls on fine sediment transport and storage in rivers

et al. 2018

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“…In addition to the assimilation of essential phosphorus for microbial growth, some species of microalgae and bacteria such as Cladophora and Polyphosphate (polyP) accumulating bacteria (e.g., Acinetobacter) can take up large amounts of phosphorus and store it as intracellular polyphosphate (Oehmen et al, 2007;Higgins et al, 2008;Schmidt et al, 2016). Moreover, phosphate can be removed from wastewater through precipitation with calcium and magnesium ions at high pH via hydroxyapatite formation (Lu et al, 2016b), and surface adsorption via formation of hydrogen bonds with the extracellular polysaccharides secreted by microalgae or bacteria .…”

Section: Phosphorus Removal Pathwaysmentioning

confidence: 99%

Advanced nutrient removal from surface water by a consortium of attached microalgae and bacteria: A review

Liu

et al. 2017

Bioresource Technology

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“…The pH value was increased quickly from around 8 to 11 within 48 h. One of the possible reason for this could be due to high photosynthetic activity of the periphyton, which could deplete CO 2 in the close proximity of photosynthetic cells, thereby creating a microenvironment having much lower CO 2 partial pressure and higher degree of calcite saturation than the bulk water (Hayashi et al, 2012). The high pH caused by periphyton photosynthetic activity encourages precipitation of carbonates and associated Ca-bound P (Dodds, 2003;Lu et al, 2016).…”

Section: P Removal By the Periphytonmentioning

confidence: 99%

Phototrophic periphyton techniques combine phosphorous removal and recovery for sustainable salt-soil zone

Feng

et al. 2016

Science of The Total Environment

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• Phototrophic periphyton is effective in removing P (P o and P i ) from wastewaters.• Adsorption with physiochemical characteristic dominated P removal mechanism by periphyton.• The P within periphyton is mainly in forms of Labile-P and Ca-P.• The periphyton has vast potential application in recovering P for salt-soil zone The P (P i as KH 2 PO 4 and P o as ATP) removal processes by phototrophic periphyton were investigated by determining the removal kinetics, metal content (Ca, Mg, Al, Fe, Cu, and Zn) of the solution and P fractions (Labile-P, Fe/Al-P, Ca-P, and Res-P) within the periphyton. Results showed that the periphyton was able to remove completely both P i and P o after 48 h when periphyton content was greater than 0.2 g L −1 (dry weight). The difference between P i and P o removal was the conversion of P o into P i by the periphyton, after that the removal mechanism was similar. The P removal mechanism was mainly due to the adsorption on the surfaces of the periphyton, including two aspects: i) the adsorption of PO 4 3− onto metal salts such as calcium carbonate (~50%) and ii) complexation between PO 4 3− and metal cations such as Ca 2+ (~40%). However, this bio-adsorptional process was significantly influenced by the extracellular polymeric substance (EPS) of periphyton, water hardness, initial G R A P H I C A L A B S T R A C T a b s t r a c t a r t i c l e i n f oKeywords:Science of the Total Environment 568 (2016) 838-844Abbreviations: α, the initial adsorption rate (mg g −1 h −1 ); β, the desorption constant (g mg −1 ); m, mass of adsorbent (g); t, time (h); C, the constant of boundary layer effect; H, Shannon index; R, ideal gas constant (8.314 J mol −1 K −1 ); T, temperature (K); V, the volume of solutions (L); k 1 , pseudo-first-order kinetic model rate constant (h −1 ); k 2 , pseudosecond-order kinetic model rate constant (mg g −1 h −1 ); q e , the amount of P adsorbed onto the periphyton at equilibrium (mg g −1 ); q e,cal , the amount of P adsorbed onto the periphyton calculated by model at equilibrium (mg g −1 ); q m , the maximum adsorption capacity for the periphyton (mg g −1 ); q t , the amount of P adsorbed onto the periphyton at time t (mg g −1 ); C 0 , initial P concentration (mg L −1 ); K id , intraparticle rate constant (mg g −1 h -0.5 ); P i , inorganic phosphorus (mg L −1 ); P o , organic phosphorus (mg L −1 ); TP, the total phosphorus content (mg L −1 ); R 2 , linear regression coefficient; ANSW, artificial non-point source wastewater; ATP, disodium adenosine triphosphate (C 10 H 14 O 13 N 5 P 3 Na 2 ·3H 2 O); DW, dry weight of the periphyton (g); EPS, extracellular polymeric substance of the periphyton; PDW, pure distilled water.⁎ Contents lists available at ScienceDirectScience of the Total Environment j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / s c i t o t e n v P concentration, temperature and light intensity. This study not only deepens the understanding of P biogeochemical process in aquatic ecosystem, but provides a potential biomaterial...

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Periphytic biofilm: A buffer for phosphorus precipitation and release between sediments and water

Cited by 82 publications

References 51 publications

Physical and biological controls on fine sediment transport and storage in rivers

Physical and biological controls on fine sediment transport and storage in rivers

Advanced nutrient removal from surface water by a consortium of attached microalgae and bacteria: A review

Phototrophic periphyton techniques combine phosphorous removal and recovery for sustainable salt-soil zone

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