Electrocoagulation reduces harvesting costs for microalgae.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F21%3A00537288" target="_blank" >RIV/67985858:_____/21:00537288 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985874:_____/21:00537288 RIV/60461373:22330/21:43921705

Výsledek na webu

<a href="http://hdl.handle.net/11104/0315017" target="_blank" >http://hdl.handle.net/11104/0315017</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.biortech.2020.124606" target="_blank" >10.1016/j.biortech.2020.124606</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electrocoagulation reduces harvesting costs for microalgae.

Popis výsledku v původním jazyce

Centrifugation is the most commonly used method for harvesting autotrophically produced microalgae, but it is expensive due to high energy demands. With the aim of reducing these costs, we tested electrocoagulation with iron electrodes for harvesting Chlorella vulgaris. During extensive lab-scale experiments, the following factors were studied to achieve a high harvesting efficiency and a low iron content in the harvested biomass: electric charge, initial biomass concentration, pH, temperature, agitation intensity, residual salt content and electrolysis time. A harvesting efficiency greater than 95% was achieved over a broad range of conditions and the residual iron content in the biomass complied with legislative requirements for food. Using electrocoagulation as the preconcentration step prior to centrifugation, total energy costs were reduced to 0.136 kWh/kg of dry biomass, which is less than 14% of that for centrifugation alone. Our data show that electrocoagulation is a suitable and cost-effective method for harvesting microalgae.

Název v anglickém jazyce

Electrocoagulation reduces harvesting costs for microalgae.

Popis výsledku anglicky

Centrifugation is the most commonly used method for harvesting autotrophically produced microalgae, but it is expensive due to high energy demands. With the aim of reducing these costs, we tested electrocoagulation with iron electrodes for harvesting Chlorella vulgaris. During extensive lab-scale experiments, the following factors were studied to achieve a high harvesting efficiency and a low iron content in the harvested biomass: electric charge, initial biomass concentration, pH, temperature, agitation intensity, residual salt content and electrolysis time. A harvesting efficiency greater than 95% was achieved over a broad range of conditions and the residual iron content in the biomass complied with legislative requirements for food. Using electrocoagulation as the preconcentration step prior to centrifugation, total energy costs were reduced to 0.136 kWh/kg of dry biomass, which is less than 14% of that for centrifugation alone. Our data show that electrocoagulation is a suitable and cost-effective method for harvesting microalgae.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20901 - Industrial biotechnology

Projekt

<a href="/cs/project/TJ01000297" target="_blank" >TJ01000297: Elektrokoagulační jednotka na separaci řasové biomasy</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

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

1873-2976

Svazek periodika

323

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

124606

Kód UT WoS článku

000614252300006

EID výsledku v databázi Scopus

2-s2.0-85098501864