Adsorption of Chromium Ion from Industrial Effluent Using Activated Carbon Derived from Plantain (Musa paradisiaca) Wastes

A.T. Adeolu^1, , O.T. Okareh² and A.O Dada³

¹Department of Environmental Health Sciences, School of Allied Health and Environmental Science, Kwara State University, Malete, Kwara State, Nigeria

²Department of Environmental Health Sciences, Faculty of Public Health, College of Medicine, University of Ibadan, Ibadan, Oyo State, Nigeria

³School of Environmental Health Studies, College of Health Sciences and Technology, Ijero-Ekiti, Ekiti State, Nigeria

Cite this paper:
A.T. Adeolu, O.T. Okareh and A.O Dada. Adsorption of Chromium Ion from Industrial Effluent Using Activated Carbon Derived from Plantain (Musa paradisiaca) Wastes. American Journal of Environmental Protection. 2016; 4(1):7-20. doi: 10.12691/env-4-1-2

Abstract

Plantain (Musa paradisiaca) wastes are readily available in Nigeria and if not properly managed, they constitute nuisance to the environment. They could be used, however to produce resource materials, such as activated carbon that are of public health importance. Therefore, this study assessed the use of plantain wastes in the bio-sorption of chromium from battery recycling effluent. Plantain wastes were collected from a plantation, sun-dried and ground. These were then carbonized and activated using phosphoric acid at high temperature. Samples of effluent from Ogunpa River were subjected to physico-chemical (pH, conductivity, Total Dissolved Solid (TDS) and Chromium (Cr)) analyses, using standard methods. Batch experiment studies were used in determining the adsorption isotherms of the adsorbents at varied effects of pH (2 to 12) and adsorbent doses (0.1 to 2.0g) with treatments by plantain prepared activated carbons. Data was analysed using descriptive statistics, paired t-test and ANOVA at 5% level of significance. Means of pH, conductivity, TDS and Cr⁺⁶ of the effluent sample were: 2.0 ± 0.2, 2164.7 ± 0.6 µs/cm, 895 ± 0.00 mg/l and 13.5 ± 0.0 mg/l respectively. The highest quantities (68.02%) of Cr were removed at pH 10 while the optimum adsorbent dose (2.0g) removed 68.91% of Cr. The adsorbents showed satisfactory fits of adsorption to Langmuir and Freundlich models. Adsorbents had capacity for the uptake of chromium from effluent generated from battery recycling plant with plantain peel activated carbon having the highest adsorption capacity. Conversion and treatment of effluent with plantain wastes should be encouraged in battery recycling plant, to reduce its menace in the environment and promote effective waste management.

Keywords:
chromium removal battery recycling effluent Musa paradisiaca Langmuir model freundlich model

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