Removal of Lead and Cadmium in Synthetic Wastewater Using Phaseolus vulgaris (Beans) Husk as Bio-adsorbent: Experimental Investigation | Chapter 03 | Emerging Challenges in Environment and Earth Science Vol. 2

 Due to their efficacy when compared to existing and expensive traditional technologies like ion exchange and membrane technology, the use of low-cost bio-adsorbents to remove heavy metals from wastewater and drinking water is quickly receiving study attention. A range of agricultural wastes have lately been subjected to this bio-sorption technology. In this study, the husk of Phaseolus vulgaris, a native bean of southwestern Nigeria, was used as an adsorbent since it was abundantly available and affordable. The concentration of heavy metals in the metal ion solution after adsorption was determined using an Atomic Adsorption Spectrophotometer (AAS). The results show that the removal efficacy of beans husk decreases as the beginning concentration rises, but increases as contact time and adsorbent dosage rise. The adsorption capacity, on the other hand, rises with the initial concentration but falls with the adsorbent dose. For lead adsorption, the ideal pH was 1.55, whereas for cadmium adsorption, it was 4.90. The findings led to the development of a low-cost, high-effective adsorbent for the removal of heavy metals from wastewater.

Author(S) Details

Funmilayo J. Okparaocha
Department of Chemistry, University of Ibadan, Ibadan, Nigeria and Department of Science Laboratory Technology, Federal College of Animal Health and Production Technology, Ibadan, Nigeria.

Peter O. Oyeleke
Department of Science Laboratory Technology, Federal College of Animal Health and Production Technology, Ibadan, Nigeria.

Abimbola B. Akinyele
Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka, Nigeria.

Omolara J. Ojezele
Department of Science Laboratory Technology, Federal College of Animal Health and Production Technology, Ibadan, Nigeria.

Kikelomo B. Odusola
Department of Science Laboratory Technology, Federal College of Animal Health and Production Technology, Ibadan, Nigeria.

Adijat Y. Shorinmade
Department of Science Laboratory Technology, Federal College of Animal Health and Production Technology, Ibadan, Nigeria.

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