Interference of model wastewater components with flocculation of Chlorella sorokiniana induced by calcium phosphate precipitates

Kód výsledku v IS VaVaI

RIV/67985858:_____/19:00504018 - isvavai.cz

Nalezeny alternativní kódy

RIV/67985874:_____/19:00504018 RIV/60461373:22330/19:43917800

Výsledek na webu

https://www.sciencedirect.com/science/article/pii/S0960852419305747?via%3Dihub

DOI - Digital Object Identifier

10.1016/j.biortech.2019.121352

Jazyk výsledku

angličtina

Název v původním jazyce

Interference of model wastewater components with flocculation of Chlorella sorokiniana induced by calcium phosphate precipitates

Popis výsledku v původním jazyce

Amongst harvesting processes, alkaline flocculation stands out as a technically feasible and low cost method. The interference of model wastewater components with alkaline flocculation of Chlorella sorokiniana (pH 8-12), induced by calcium phosphate (CaP) precipitates, was evaluated. Between the compounds tested, inorganic nitrogen, sodium alginate, salinity and algal organic matter had no effect on flocculation efficiency (FE). The negative effect of humic acids, sodium dodecyl sulphate and alkalinity on FE was partial. Bovine serum albumin and bacterial organic matter (BOM) of Escherichia coli showed the strongest disruption of FE. The impact of BOM can be explained by the high protein content (65% of total organic carbon). Proteins, negatively charged at alkaline pH, interrupt microalgae flocculation by preferentially interacting with positively charged CaP precipitates. The simultaneous effects of multiple substances were tested to simulate real wastewater. The results confirm the need to investigate the composition of wastewater prior to alkaline flocculation.

Název v anglickém jazyce

Interference of model wastewater components with flocculation of Chlorella sorokiniana induced by calcium phosphate precipitates

Popis výsledku anglicky

Amongst harvesting processes, alkaline flocculation stands out as a technically feasible and low cost method. The interference of model wastewater components with alkaline flocculation of Chlorella sorokiniana (pH 8-12), induced by calcium phosphate (CaP) precipitates, was evaluated. Between the compounds tested, inorganic nitrogen, sodium alginate, salinity and algal organic matter had no effect on flocculation efficiency (FE). The negative effect of humic acids, sodium dodecyl sulphate and alkalinity on FE was partial. Bovine serum albumin and bacterial organic matter (BOM) of Escherichia coli showed the strongest disruption of FE. The impact of BOM can be explained by the high protein content (65% of total organic carbon). Proteins, negatively charged at alkaline pH, interrupt microalgae flocculation by preferentially interacting with positively charged CaP precipitates. The simultaneous effects of multiple substances were tested to simulate real wastewater. The results confirm the need to investigate the composition of wastewater prior to alkaline flocculation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

GA18-05007S: Vliv organických látek produkovaných fytoplanktonem na vlastnosti vloček tvořených během koagulace/flokulace při úpravě vody

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Bioresource Technology

ISSN

0960-8524

e-ISSN

—

Svazek periodika

286

Číslo periodika v rámci svazku

August

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

121352

Kód UT WoS článku

000468297700001

EID výsledku v databázi Scopus

2-s2.0-85064662961