Coupled microalgal–bacterial biofilm for enhanced wastewater treatment without energy investment

Akao, Patricia K.; Singh, Bimalpreet; Kaur, P.; Sor, Alessandra; Avni, Adi; Dhir, Amit; Verma, Shilpi; Kapoor, Swati; Phutela, Urmila Gupta; Satpute, Sanjay; Sharma, Sandeep; Avisar, Dror; Sandha, Karmjit Singh; Mamane, Hadas

doi:10.1016/j.jwpe.2021.102029

Cited by 24 publications

(7 citation statements)

References 48 publications

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“…Orthophosphates are the preferred form for assimilation and for growth and synthesis of nucleic acids and several value-added compounds, such as astaxanthin and PUFAs.The preferred forms of nitrogen used by plants are ammonium (NH4 + ) and nitrate (NO3 − ). Nitrogen deficiency affects the productivity and growth of plants, whereas surplus nitrogen causes groundwater pollution and is harmful to humans (Akao et al, 2021). The total Kjeldahl nitrogen (TKN) and crude protein content were 195.55 and 1319.96 mg/l, respectively, in the control experiment.…”

Section: Environment Conservation Journalmentioning

confidence: 96%

Analysis of the growth profile, biochemical composition and nutrient removal efficacy of Spirulina sp. NCIM 5143

Sharma,

Phutela

2023

ECJ

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In the present manuscript, the growth profile of the microalgae Spirulina sp. NCIM 5143 was studied. Screening was performed on four commercial media, i.e., blue‒green-11 (BG-11), Bold’s basal medium (BBM), algal culture medium (ACM), Zarrouk’s medium (ZM), and different concentrations (20%, 40%, 60%, 80%, and 100%) of unsterilized dairy effluent (UDE). Characterization of biomass was performed to assess its biochemical composition through various assays. Elemental composition and bioactive compound analysis were accomplished by inductively coupled plasma-atomic emission spectroscopy (ICP‒AES) and gas chromatography‒mass spectrometry (GC‒MS), respectively. The results revealed that maximum values of most of the parameters, i.e., optical density (0.21), chlorophyll (2.00 mg/l), proteins (119.17 mg/l), and wet (4.06 g/l) and dry biomass weight (0.28 g/l), were found on ZM. For UDE, maximum growth parameters and the highest nutrient removal efficiency were obtained at 100% concentration. Biochemical analysis revealed that total Kjeldahl nitrogen (7.14±0.49%), crude protein (48.23± 3.34%), total antioxidant activity (3.07±0.03 mg AAE/g), and total phenols (8.88±1.93 mg GAE/g) were present in the biomass. Elemental and GC‒MS analysis detected essential micronutrients and many bioactive compounds, respectively. Hence, this study proved that Spirulina sp. NCIM 5143 has the potential for the management of waste dairy effluent. This study also showed its cost-effectiveness, as the dairy effluent analyzed is used without any kind of sterilization. In addition, its biomass is rich in several essential elements, antioxidants, and bioactive compounds of therapeutic and nutraceutical importance.

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Section: Environment Conservation Journalmentioning

confidence: 96%

Analysis of the growth profile, biochemical composition and nutrient removal efficacy of Spirulina sp. NCIM 5143

Sharma,

Phutela

2023

ECJ

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“…Phosphate-accumulating organisms participating in biofilm formation may help in the removal of this growth. For this, microalgal biofilms composed of Chlorella vulgaris , Scenedesmus vacuolatus , and Scenedesmus obliquus have been found to be efficient in this process [ 53 ].…”

Section: Economic Importance Of Biofilmsmentioning

confidence: 99%

“…In addition, the loss of important bacteria and biomass can be avoided [ 29 ]. Biofilm-based water treatment plants are also cost-effective and energy-efficient [ 53 ]. Algal biofilms can grow on wastewater, making it free from heavy metals and pollutants.…”

Section: Economic Importance Of Biofilmsmentioning

confidence: 99%

“…They can then be harvested and used for the production of biofuels [ 17 ]. In the future, biofilm-treated wastewater might be helpful for crop irrigation as a source of clean water in natural water bodies during drought-like situations [ 53 ]. The upcycling of wastewater is necessary to achieve the SDGs (Sustainable Development Goals) [ 48 ].…”

Section: Economic Importance Of Biofilmsmentioning

confidence: 99%

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Microbial Biofilms: Applications, Clinical Consequences, and Alternative Therapies

Ali,

Zahra,

Kamthan

et al. 2023

Microorganisms

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Biofilms are complex communities of microorganisms that grow on surfaces and are embedded in a matrix of extracellular polymeric substances. These are prevalent in various natural and man-made environments, ranging from industrial settings to medical devices, where they can have both positive and negative impacts. This review explores the diverse applications of microbial biofilms, their clinical consequences, and alternative therapies targeting these resilient structures. We have discussed beneficial applications of microbial biofilms, including their role in wastewater treatment, bioremediation, food industries, agriculture, and biotechnology. Additionally, we have highlighted the mechanisms of biofilm formation and clinical consequences of biofilms in the context of human health. We have also focused on the association of biofilms with antibiotic resistance, chronic infections, and medical device-related infections. To overcome these challenges, alternative therapeutic strategies are explored. The review examines the potential of various antimicrobial agents, such as antimicrobial peptides, quorum-sensing inhibitors, phytoextracts, and nanoparticles, in targeting biofilms. Furthermore, we highlight the future directions for research in this area and the potential of phytotherapy for the prevention and treatment of biofilm-related infections in clinical settings.

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“…Microalgae produce compounds that are useful to the bacterial community, such as supplemental carbonic source while heterotrophic bacteria produce compounds such as vitamins useful to microalgae [16]. Remarkably, microalgae and bacteria may produce biofilm or aggregates that enhance the harvesting efficacy [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Inoculum of indigenous microalgae/activated sludge for optimal treatment of municipal wastewaters and biochemical composition of residual biomass for potential applications

Lima

Brucato²,

Caputo³

et al. 2022

Journal of Water Process Engineering

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Coupled microalgal–bacterial biofilm for enhanced wastewater treatment without energy investment

Cited by 24 publications

References 48 publications

Analysis of the growth profile, biochemical composition and nutrient removal efficacy of Spirulina sp. NCIM 5143

Analysis of the growth profile, biochemical composition and nutrient removal efficacy of Spirulina sp. NCIM 5143

Microbial Biofilms: Applications, Clinical Consequences, and Alternative Therapies

Inoculum of indigenous microalgae/activated sludge for optimal treatment of municipal wastewaters and biochemical composition of residual biomass for potential applications

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