Eco-friendly banana peel biochar for adsorption of toxic metals from landfill treatment pond leachate
Creators: name: Duwiejuah, Abudu Ballu
name: Mutawakil, Zubayda
name: Oyelude, Emmanuel O.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Space Science
subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Plant Biology
subject: Virology

description: Adsorption is one of the most efficient ways to eliminate hazardous metals. The study evaluated the effectiveness of banana peel biochar as a cheap adsorbent to remove hazardous metals from landfill leachate. The landfill leachate of 100 mg/L was mixed with banana peel biochar (0.50, 1.50, and 3.00 g each) and placed in a water bath for 15, 30, and 45 min at a constant temperature of 30 °C and 35 °C. The adsorption efficiency of banana peel biochar for nickel in the leachate ranged from 98.76% to 98.96% and chromium ranged from 99.71% to 99.77% at a temperature of 30 °C for 15 mins and 99.07% to 99.27% for Ni and 99.71% to 99.73% for Cr at a temperature of 35 °C for 45 min. Banana peel biochar maximum adsorption capacity of nickel ranged from 1.15 × 10<sup>−5</sup> mg/g to 5.27 × 10<sup>−6</sup> mg/g, and 1.05 × 10<sup>−5</sup> mg/g to 6.76 × 10<sup>−6</sup> mg/g for chromium. Adsorbent made from less expensive banana peel can affordably remove nickel and chromium from landfill leachate. To acquire a broad understanding of the adsorbent’s application, more adsorptive research utilizing banana peels as an adsorbent to treat various wastes ought to be conducted. Investigating banana peel biochar as an economical and eco-friendly adsorbent for eliminating toxic metals, particularly nickel and chromium, from landfill leachate is innovative. With high adsorption efficiencies of 99.77% for nickel and 98.96% for chromium, the study showed how banana peel waste can tackle real wastewater treatment and major environmental issues. This study advances knowledge of the uses of biochar in waste management and more investigation into the treatment of a larger spectrum of pollutants, the development of a circular economy, and the improvement of eco-friendly waste treatment techniques using banana peel biochar. Banana peel biochar offers an eco-friendly alternative to synthetic adsorbents and reduces the environmental impact associated with waste disposal. Banana peel biochar offers an eco-friendly alternative to synthetic adsorbents and reduces the environmental impact associated with waste disposal. The adsorption efficiency of nickel and chromium exceeded 98% which indicates a strong affinity of nickel and chromium onto the banana peels biochar surface. Banana peel biochar has high adsorption efficiency for nickel. The removal of nickel from landfill leachate can be accomplished affordably by using inexpensive banana peel biochar as an adsorbent. The dosage of banana peel biochar as well as several experimental variables such as contact time, and temperature favors the adsorption. The banana peel is an efficient and cheap material, which can be used to remove Ni and Cr from wastewater to the permissible limits.