Effect of Micronutrient and Hormone on Microalgae Growth Assessment for Biofuel Feedstock

Ayesha Aslam, Sumaira Rasul, Ali Bahadar, Nazia Hossain, Muhammad Saleem, Sabir Hussain, Lubna Rasool and Hamid Manzoor
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Ayesha Aslam: Institute of Molecular Biology and Biotechnology (IMBB), Bahauddin Zakariya University, Multan 60800, Pakistan
Sumaira Rasul: Institute of Molecular Biology and Biotechnology (IMBB), Bahauddin Zakariya University, Multan 60800, Pakistan
Ali Bahadar: Department of Chemical and Materials Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia
Nazia Hossain: School of Engineering, RMIT University, Melbourne, VIC 3001, Australia
Muhammad Saleem: Department of Industrial Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia
Sabir Hussain: Department of Environmental Science and Engineering, Government College University, Faisalabad 38000, Pakistan
Lubna Rasool: Department of Chemistry, University of Sahiwal, Sahiwal 57000, Pakistan
Hamid Manzoor: Institute of Molecular Biology and Biotechnology (IMBB), Bahauddin Zakariya University, Multan 60800, Pakistan

Sustainability, 2021, vol. 13, issue 9, 1-20

Abstract: The individual and combined effects of micronutrients and hormones on freshwater-borne microalgae growth were investigated for biofuel feedstock in this experimental study. Five algal strains of Chlorella sp., Chlorococcum sp., Phormidium sp., Chlorella sp. and Cosmarium sp., AZH, AZS, ZAA1, ZAA2, and ZAA3, respectively, have been investigated. These strains were treated using different concentrations of micronutrients (iron chloride, manganese chloride, and sodium molybdenum oxide) and hormone (salicylic acid). The different treatments’ growth effects were as follows: iron chloride > sodium molybdenum oxide ˃ manganese chloride > salicylic acid. The order of the increases in the number of microalgal strain cells achieved by the application of the micronutrients and hormone was AZH > AZS > ZAA3 > ZAA2 > ZAA1. The combined treatments produced higher growth rates than the individual treatments, with the order of their effects being micronutrients + hormone > all three micronutrients > hormone alone. The increase in the number of microalgal strain cells under combined treatment was ZAA3 > AZH > AZS > ZAA2 and assessed using one-way ANOVA.

Keywords: biofuel; microalgae; micronutrient; hormone; growth; chlorophyll (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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