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Design and modelling of photobioreactor for the treatment of carpet and textile effluent using Diplosphaera mucosa VSPA

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Abstract

The current study investigated the potential of one less explored microalgae species, Diplosphaera mucosa VSPA, for treating carpet and textile effluent in a conventionally designed 10 L bubble column photobioreactor. To the best of our knowledge, this is the first study to evaluate COD (chemical oxygen demand) removal efficiency by microalgae in carpet effluent. To evaluate D. mucosa VSPA's potential, its growth and bioremediation efficacy were compared to those of a well-known strain, Chlorella pyrenoidosa. D. mucosa VSPA outperformed C. pyrenoidosa in both effluents, with the highest biomass concentration reaching 4.26 and 3.98 g/L in carpet and textile effluent, respectively. D. mucosa VSPA also remediated 94.0% of ammonium nitrogen, 71.6% of phosphate phosphorus, and 91.9% of chemical oxygen demand in carpet effluent, approximately 10% greater than that of C. pyrenoidosa. Both species also removed more than 65% of colour from both effluents, meeting the standard set by governing bodies. Microalgae growth and substrate removal patterns in the photobioreactor were simulated using photobiotreatment and the Gompertz model. Simulation results revealed that photobiotreatment was the better-fit model, concluded based on the coefficient of regression value and the second-order Akaike information criterion test. Modelling studies can assist in increasing the performance and scale-up of the photobioreactor.

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Data availability statement

The data used in the research is confidential.

Abbreviations

Abs.:

Absorbance

BOD:

Biological oxygen demand

COD:

Chemical oxygen demand

Dia:

Diameter

HRT:

Hydraulic retention time

NH4 +–N:

Ammonium nitrogen

NRE:

Nitrogen removal efficiency

PBRs:

Photobioreactors

PO4 3 –P:

Phosphate phosphorus

PRE:

Phosphorus removal efficiency

RE:

Removal efficiency

STP:

Sewage Treatment Plant (STP)

TE1:

Textile effluent containing acid yellow dye

TE2:

Textile effluent containing acid orange dye

TE3:

Textile effluent containing basic pink dye

HRAP:

High-rate algal pond

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Acknowledgements

The authors of the manuscript are thankful to CSIR, New Delhi and IIT(BHU), Varanasi for extending their technical and financial support.

Funding

Council of Scientific & Industrial Research (CSIR), India.

Author information

Authors and Affiliations

Authors

Contributions

VS: Experimental Design and research work; AM: Manuscript editing and Final Draft Preparation; PS: Conceptualization of Project.

Corresponding author

Correspondence to Abha Mishra.

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Conflict of interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. I hereby declare that there is no potential conflict of interest among all authors.

Ethical statements

The manuscript should not be submitted to more than one publication for simultaneous consideration.

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Supplementary file1 (DOCX 694 KB)

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Singh, V., Srivastava, P. & Mishra, A. Design and modelling of photobioreactor for the treatment of carpet and textile effluent using Diplosphaera mucosa VSPA. 3 Biotech 13, 235 (2023). https://doi.org/10.1007/s13205-023-03655-3

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  • DOI: https://doi.org/10.1007/s13205-023-03655-3

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