The growth of filamentous microalgae is increased on biochar solid supports

Kholssi, Rajaa; Marks, Evan A.N.; Montero, Olimpio; Pascual-Maté, Ana; Debdoubi, Abderrahmane; Rad, Carlos

doi:10.1016/j.bcab.2017.12.011

Cited by 20 publications

(13 citation statements)

References 11 publications

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“…sp). However, in Kholssi et al (2018)'s study, the growth of Anabaena cylindrica significantly increased with wood biochar solid support compared with liquid media.…”

Section: Combination Of Algae and Biocharmentioning

confidence: 86%

“…Some studies reported the interactions between biochar and algae (Awad et al, 2017;Jia et al, 2018;Kholssi et al, 2018;Magee et al, 2013;Zhang et al, 2019). In terms of the inhibitory effects between biochar and algae, the result showed that in some conditions, biochar could significantly inhibit the growth of algae.…”

Section: Combination Of Algae and Biocharmentioning

confidence: 99%

“…Based on these findings, positive effects between algae and biochar are only valid for specific algae and biochar (Kholssi et al, 2018). Some biochar can boost more extracellular polymeric substances (EPS) of algal origin.…”

Section: Combination Of Algae and Biocharmentioning

confidence: 99%

See 2 more Smart Citations

Algae, biochar and bacteria for acid mine drainage (AMD) remediation: A review

Bogush

Mašek

et al. 2022

Chemosphere

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“…sp). However, in Kholssi et al (2018)'s study, the growth of Anabaena cylindrica significantly increased with wood biochar solid support compared with liquid media.…”

Section: Combination Of Algae and Biocharmentioning

confidence: 86%

Section: Combination Of Algae and Biocharmentioning

confidence: 99%

See 1 more Smart Citation

Algae, biochar and bacteria for acid mine drainage (AMD) remediation: A review

Bogush

Mašek

et al. 2022

Chemosphere

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“…Also the suspended solid phase PBR (ssPBR) by Zhuang et al (2014) is based on carriers made of fabric, which circulate in the reactor by a directed flow. It can be stated that there is some work on the passive immobilization of cyanobacteria (Aoki et al, 2018; Chetsumon et al, 1995; Fischer et al, 1997; Kholssi et al, 2018; L. Zhang et al, 2015; Q. Zhang et al, 2017) but not in radial systems, which have several advantages. For reactor types with a fixed substrate, the surface area that can be cultivated usually cannot be larger than the illuminated surface area of the reactor.…”

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Passively immobilized cyanobacteria Nostoc species BB 92.2 in a moving bed photobioreactor (MBPBR): Design, cultivation, and characterization

Walther

Erdmann

Stoffel

et al. 2022

Biotech & Bioengineering

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The cyanobacterium Nostoc sp. BB 92.3. had shown antibacterial activity. A cultivation as biofilm, a self-forming matrix of cells and extracellular polymeric substances, increased the antibacterial effect. A new photobioreactor system was developed that allows a surface-associated cultivation of Nostoc sp. as biofilm. Highdensity polyethylene carriers operated as a moving bed were selected as surface for biomass immobilization. This system, well established in heterotrophic wastewater treatment, was for the first time used for phototrophic biofilms. The aim was a cultivation on a large scale without inhibiting growth while maximizing immobilization. Cultivation in a small photobioreactor (1.5 L) with different volumetric filling degrees of carriers (13.4%-53.8%) in a batch process achieved immobilization rates of 70%-85% and growth was similar to a no-carrier-control. In a larger photobioreactor (65 L) essentially all of the biomass was immobilized on the carriers and the space-time yield of biomass (0.018 g cell dry weight L −1 day −1 ) was competitive compared to phototrophic biofilm cultivations from literature. The use of carriers increased the gas exchange in the reactor by a factor of 2.5-3 but doubled the mixing time. Enriched gassing with carbon dioxide resulted in a shortterm increase in growth rate, but unexpectedly it also adversely changed the growth morphology.

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Chlorococcum sp. biofilm growth on biochar from olive kernels solid support

Tsavatopoulou

Vakros

Manariotis

2023

J of Chemical Tech & Biotech

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BACKGROUND: Biofilm is a complex community of microorganisms including microalgae, bacteria and protozoa, which are adhered to a surface. The purpose of an integrated microalgal processing system is the production of biofuels, biomass and other valuable bioproducts as well as wastewater remediation. Biochar is a carbon-rich and porous substrate, capable of adsorbing nutrients.RESULTS: In this study, biochar produced from olive kernels pyrolyzed at 400 °C was tested as a solid support candidate for adhering Chlorococcum sp. cultures. The substrate used was BG-11 with 1/3 nitrates and BG-11 without nitrates and phosphates. After 15 days of cultivation, the biomass attached to biofilm was measured, while different parameters were determined in the liquid. Among the different concentrations of biochar used, the culture containing 1 g L −1 biochar gave the best performance, resulting in 1.28 and 1.24 g microalgae g −1 biochar in the presence and absence of nitrates, respectively. CONCLUSION: The cultures containing BG-11 without nitrogen and phosphorus showed leaching of nutrients in the liquid of the reactor. The present findings provide an alternative use of biochar, enhancing the growth of microalgae, and thus encouraging its use as supporting material in bioreactors.

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The growth of filamentous microalgae is increased on biochar solid supports

Cited by 20 publications

References 11 publications

Algae, biochar and bacteria for acid mine drainage (AMD) remediation: A review

Algae, biochar and bacteria for acid mine drainage (AMD) remediation: A review

Passively immobilized cyanobacteria Nostoc species BB 92.2 in a moving bed photobioreactor (MBPBR): Design, cultivation, and characterization

Chlorococcum sp. biofilm growth on biochar from olive kernels solid support

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