Cultured phototrophic biofilms for phosphorus removal in wastewater treatment

Guzzon, Antonella; Böhn, Andreas; Diociaiuti, Marco; Albertano, Patrizia

doi:10.1016/j.watres.2008.07.029

Cited by 123 publications

(47 citation statements)

References 27 publications

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“…As a result, many technologies are currently in place to remove excess P from wastewaters, among them biological methods using phototrophic periphyton is a subject of great concern (Boelee et al, 2011;Guzzon et al, 2008;Roeselers et al, 2008;Shi et al, 2007;Sukačová et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

“…It is composed of multilayered consortia of photoautotrophs (e.g., unicellular and filamentous cyanobacteria, benthic diatoms and green microalgae) and heterotrophs (bacteria, fungi and protozoa) and is also dominated by more photoautotrophic microorganisms (Guzzon et al, 2008). The layers are embedded in a common extracellular polymeric substance (EPS), secreted by the community, that mediates the adhesion of photo and heterotrophs (Donlan, 2002;Sutherland, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Comparing with traditional suspended algae (mixed or monocultures) wastewater purification systems, the major advantage of periphyton-based measure is that the system can avoid separation of suspended algal biomass and water, in addition to that nutritious compounds can be retained in algal biomass which further can be harvested and used as fertilizers in agriculture (Schumacher & Sekoulov, 2002). As a result, periphytonbased methods were applied to remove P from wastewaters and subsequently acquired a favorable effect in removing P from wastewaters (Boelee et al, 2011;Cao et al, 2016;Guzzon et al, 2008;Jöbgen et al, 2004;Posadas et al, 2013;Sukačová et al, 2015;Zamalloa et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Zamalloa et al (2012) used microalgae biofilm to remove P from domestic wastewater and found that about 95% of total P was recovered in the algae biomass. Guzzon et al (2008) observed that P removal by periphyton was accumulated inside the cells of phototrophs, mainly in the cytoplasm of the green algae. These researchers argued that assimilation was the main removal mechanism of P by periphytons.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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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“…A previous study had shown that P reserves occurred as polyphosphate inside the cells of phototrophs, such as inside vacuoles of green algae (Guzzon et al, 2008). Moreover, the special morphological characteristics of periphyton contain numerous voids, channels, cavities, and pores (Fig.…”

Section: Effect Of Ca(ii) On P I Accumulationmentioning

confidence: 96%