_____________________________________________________________________________________________________ *Corresponding author: E-mail: ubabright4real@yahoo.com; Asian Journal of Biotechnology and Genetic Engineering 3(2): 20-31, 2020; Article no.AJBGE.57803 Evaluation of the Ecotoxicity Potentials of E-Waste Using Selenastrum capricornutum (Microalga), Eisenia fetida (Earth Worm) and Allium cepa (Onion Bulb) as Bioindicators Bright Obidinma Uba 1* , Ebele Linda Okoye 2 , Blessing Ginika Nweke 1 and Chiamaka Perpetua Ibeneme 1 1 Department of Microbiology, Chukwuemeka Odumegwu Ojukwu University, P.M.B.02 Uli, Anambra State, Nigeria. 2 Department of Applied Microbiology and Brewing, Nnamdi Azikiwe University, P.M.B. 5025 Awka, Anambra State, Nigeria. Authors’ contributions This work was carried out in collaboration among all authors. Authors BOU, ELO designed the study, performed the statistical analysis, wrote the protocol and wrote the first draft of the manuscript. Authors BGN, CPI managed the analyses of the study. Authors BGN, CPI managed the literature searches. All authors read and approved the final manuscript. Article Information Editor(s): (1) Dr. Rafael Trindade Maia, Universidade Federal de Pernambuco, Brazil Reviewers: (1) A. S. Agus Putra, University of Samudra, Indonesia. (2) Pramod Kumar Mahish, Govt. Digvijay Autonomous College (Musicana), India. Complete Peer review History: http://www.sdiarticle4.com/review-history/57803 Received 30 March 2020 Accepted 06 June 2020 Published 19 June 2020 ABSTRACT Aims: This research work was designed to evaluate the ecotoxicity potentials of e-waste using Selenastrum capricornutum, Eisenia fetida and Allium cepa as bioindicators. Study Design: Selenastrum capricornutum and Allium cepa bulbs were exposed for 72 h at concentration ranging from 0 mg/L to 100 mg/L while Eisenia fetida were exposed for 48 h and 14 days at sub - lethal concentrations ranging from 0 mg/L to 8.54 mg/Lfor Hp laptop battery and 0 mg/L to 9.34 mg/L for Toshiba battery sample, respectively. Place and Duration of Study: Department of Microbiology, Chukwuemeka Odumegwu Ojukwu University (COOU), Uli Anambra State, Nigeria during May, 2019 - December, 2019. Original Research Article