Symbiotic hollow fiber membrane photobioreactor for microalgal growth and bacterial wastewater treatment

Vu, Linh Tran Khanh; Loh, Kai‐Chee

doi:10.1016/j.biortech.2016.07.105

Cited by 20 publications

(6 citation statements)

References 40 publications

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Section: Resultsmentioning

confidence: 99%

“…van der Ha et al [45] for example, co-cultured microalgae and methane-oxidizing bacteria to achieve concurrent microbial methane oxidation and CO 2 uptake. Vu and Loh [46] described a symbiotic consortium of C. vulgaris and P. putida, where the algal fraction grew photoautotrophically using CO 2 produced by the bacterium. This in turn eliminated the need for aeration by providing the oxygen needed by the obligate aerobe P. putida to carry out efficient glucose biodegradation.…”

Section: Plos Onementioning

confidence: 99%

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Interaction between CO2-consuming autotrophy and CO2-producing heterotrophy in non-axenic phototrophic biofilms

Ronan

Kroukamp²,

Liss³

et al. 2021

PLoS ONE

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As the effects of climate change become increasingly evident, the need for effective CO2 management is clear. Microalgae are well-suited for CO2 sequestration, given their ability to rapidly uptake and fix CO2. They also readily assimilate inorganic nutrients and produce a biomass with inherent commercial value, leading to a paradigm in which CO2-sequestration, enhanced wastewater treatment, and biomass generation could be effectively combined. Natural non-axenic phototrophic cultures comprising both autotrophic and heterotrophic fractions are particularly attractive in this endeavour, given their increased robustness and innate O2-CO2 exchange. In this study, the interplay between CO2-consuming autotrophy and CO2-producing heterotrophy in a non-axenic phototrophic biofilm was examined. When the biofilm was cultivated under autotrophic conditions (i.e. no organic carbon), it grew autotrophically and exhibited CO2 uptake. After amending its growth medium with organic carbon (0.25 g/L glucose and 0.28 g/L sodium acetate), the biofilm rapidly toggled from net-autotrophic to net-heterotrophic growth, reaching a CO2 production rate of 60 μmol/h after 31 hours. When the organic carbon sources were provided at a lower concentration (0.125 g/L glucose and 0.14 g/L sodium acetate), the biofilm exhibited distinct, longitudinally discrete regions of heterotrophic and autotrophic metabolism in the proximal and distal halves of the biofilm respectively, within 4 hours of carbon amendment. Interestingly, this upstream and downstream partitioning of heterotrophic and autotrophic metabolism appeared to be reversible, as the position of these regions began to flip once the direction of medium flow (and hence nutrient availability) was reversed. The insight generated here can inform new and important research questions and contribute to efforts aimed at scaling and industrializing algal growth systems, where the ability to understand, predict, and optimize biofilm growth and activity is critical.

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Section: Resultsmentioning

confidence: 99%

Section: Plos Onementioning

confidence: 99%

Interaction between CO2-consuming autotrophy and CO2-producing heterotrophy in non-axenic phototrophic biofilms

Ronan

Kroukamp²,

Liss³

et al. 2021

PLoS ONE

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“…AHFMBRs find applications in various other fields. For example, the study by Vu and Loh [101] developed a hollow fiber membrane photobioreactor (HFMP) for microalgal growth and bacterial wastewater treatment. Chlorella vulgaris culture and Pseudomonas putida cultures were circulated through the two sides of each of the HFMP.…”

Section: Other Potential Applicationsmentioning

confidence: 99%

Algal-Based Hollow Fiber Membrane Bioreactors for Efficient Wastewater Treatment: A Comprehensive Review

Javed,

Mukhtar,

Zieniuk

et al. 2024

Fermentation

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The treatment of living organisms is a critical aspect of various environmental and industrial applications, ranging from wastewater treatment to aquaculture. In recent years, algal-based hollow fiber membrane bioreactors (AHFMBRs) have emerged as a promising technology for the sustainable and efficient treatment of living organisms. This review provides a comprehensive examination of AHFMBRs, exploring their integration with algae and hollow fiber membrane systems for diverse applications. It also examines the applications of AHFMBRs in various areas, such as nutrient removal, wastewater treatment, bioremediation, and removal of pharmaceuticals and personal care products. The paper discusses the advantages and challenges associated with AHFMBRs, highlights their performance assessment and optimization strategies, and investigates their environmental impacts and sustainability considerations. The study emphasizes the potential of AHFMBRs in achieving enhanced nutrient removal, bioremediation, and pharmaceutical removal while also addressing important considerations such as energy consumption, resource efficiency, and ecological implications. Additionally, it identifies key challenges and offers insights into future research directions. Through a systematic analysis of relevant studies, this review aims to contribute to the understanding and advancement of algal-based hollow fiber membrane bioreactors as a viable solution for the treatment of living organisms.

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“…On the other hand, they may grow without interfering with one another. In the previous research, Vu and Loh (2016) used hollow fiber as a support material to adhere the bacterial growth in place. As a consequence, the efficiency of algal‐biomass productivity and substrate degradation reached 69% and 98%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Zeolite addition in microalgae Chlorella sp. for treatment of bacteria contaminated vinasse

Budianto

Wibowo

Hadiyanto

et al. 2023

Environmental Quality Mgmt

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Chlorella pyrenoidosa has been grown in artificial vinasse digestate. The method being used is intended to gather data on kinetic parameters that govern the performance of C. pyrenoidosa cultivated in a medium containing bacterial components. This condition was developed by introducing 1000 μL of Bacillus cereus to the medium (5 ppm of vinasse: 15 ppm of NaHCO3 = 3:2), which was subsequently mixed with C. pyrenoidosa culture at a 1:1 v/v ratio. The cultivation was carried out in batch mode for 15 days. The photosynthesis process of C. pyrenoidosa was conducted in 14 h and supported by 2 mL L−1 Guillard, which was given every 5 days. The study additionally investigated how different amounts of Zeolite (30, 60, and 90 gL−1) affected the kinetic parameters of microalgae grown in artificial vinasse digestate. This study demonstrated that the utilization of artificial vinasse digestate as a growing medium for C. pyrenoidosa resulted in growth limitation symptoms of microalgae, as a consequence of unfavorable interaction between C. pyrenoidosa and bacteria that already existed in the medium. This is indicated by low values of growth kinetics parameters, including specific growth rate (0.0259 d−1) and biomass productivity (0.51774 gL−1d−1) as compared to the reactor without bacteria in the medium. Therefore, adding a certain quantity of Zeolite to the reactor is a promising alternative for mitigating the negative effects of bacterial presence. With the addition of 90 g L−1 of Zeolite to the reactor, the specific growth rate of C. pyrenoidosa increases by 71%, indicating an appropriate growth. In addition, the total yield of PHB formation and the Melanoidin degradation efficacy of this reactor improved by 70% and 98%, respectively.

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Symbiotic hollow fiber membrane photobioreactor for microalgal growth and bacterial wastewater treatment

Cited by 20 publications

References 40 publications

Interaction between CO2-consuming autotrophy and CO2-producing heterotrophy in non-axenic phototrophic biofilms

Interaction between CO2-consuming autotrophy and CO2-producing heterotrophy in non-axenic phototrophic biofilms

Algal-Based Hollow Fiber Membrane Bioreactors for Efficient Wastewater Treatment: A Comprehensive Review

Zeolite addition in microalgae Chlorella sp. for treatment of bacteria contaminated vinasse

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