Multifaceted applications of isolated microalgae Chlamydomonas sp. TRC-1 in wastewater remediation, lipid production and bioelectricity generation. (May 2020)

• Record Type: Journal Article
• Authors: Behl, Kannikka; SeshaCharan, Pasupuleti; Joshi, Monika; Sharma, Mahima; Mathur, Ashish; Kareya, Mukul Suresh; Jutur, Pannaga Pavan; Bhatnagar, Amit; Nigam, Subhasha
• Is Part Of: Bioresource technology. Volume 304(2020)
• Publication Date: 2020-05
• Subjects: Biofuels -- Bioremediation -- Electrogenic -- Microalga -- Textile effluent; Biomass -- Periodicals; Biomass energy -- Periodicals; Bioremediation -- Periodicals; Agricultural wastes -- Periodicals; Factory and trade waste -- Periodicals; Organic wastes -- Periodicals; Bioénergie -- Périodiques; Déchets agricoles -- Périodiques; Déchets industriels -- Périodiques; Déchets organiques -- Périodiques; Déchets (Combustible) -- Périodiques; 662.88
• DOI: 10.1016/j.biortech.2020.122993
• Languages: English
• ISSNs: 0960-8524

Abstract

Graphical abstract: Highlights: Multifaceted applications of newly isolated microalga C. TRC-1 were explored. Remediation, lipid and bioelectricity generation potential of alga were studied. 99.89% decolorization of FTE after 7 days was achieved. Enhancement in lipid content (4%) was observed after bioremediation. Increase of 1.5 and 1.04 folds for current and power density after bioremediation. Abstract: Green microalga, Chlamydomonas sp. TRC-1 ( C. TRC-1 ), isolated from the outlet of effluent treatment plant of textile dyeing mill, was investigated for its competence towards bioremediation. Algal biomass obtained after remediation (ABAR) was implied for bioelectricity and biofuel production. C. TRC-1 could completely decolorize the effluent in 7 days. Significant reduction in pollution-indicating parameters was observed. Chronoamperometric studies were carried out using cyclic voltammetry and electrochemical impedance spectroscopy (EIS). Maximum current density, power and power density of 3.6 A m –2, 4.13 × 10 –4 W and 1.83 W m –2, respectively were generated in ABAR. EIS studies showed a decrease in resistance of ABAR, supporting better electron transfer as compared to algal biomass before remediation (ABBR). Its candidature for biofuel production was assessed by estimating the total lipid content. Results revealed enhancement in lipid content from 46.85% (ABBR) to 79.1% (ABAR). Current study advocates versatile potential of isolated C. TRC-1 for bioremediation of wastewater, bioelectricity production and biofuel generation.