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Advances in Environmental Research
  Volume 7, Number 3, September 2018, pages 225-237
DOI: http://dx.doi.org/10.12989/aer.2019.7.3.225
 
open access

Effective adsorption of lead and copper from aqueous solution by samaneasaman and banana stem
Narayana Harish, Prashanth Janardhan and Sanjeev Sangami

 
Abstract
    The sorption of metal ions with low-cost adsorbents plays an important role in sustainable development. In the present study, the efficacy of sugarcane bagasse, rain tree fruits (samaneasaman), banana stem and their mixtures, used as bio-sorbents, in the removal of Cu(II) and Pb(II) ions from aqueous solution is evaluated. Batch studies are conducted, and residual ions were measured using Inductively Coupled Plasma (ICP)-atomic spectrometer. Effect of pH, initial metal ion concentration, reaction time and adsorbent dosage are studied. The Pb(II) removal efficiency was observed to be 97.88%, 98.60% and 91.74% for rain tree fruits, banana stem and a mixture of adsorbents respectively. The highest Cu(II) ion removal was observed for sugarcane bagasse sorbent with an efficiency of 82.10% with a pH of 4.5 and a reaction time of 90 min. Finally, desorption studies were carried out to study the leaching potential of adsorbent, and it was found that the adsorbent is stable in water than the other leaching agents such as HCl, ammonium acetate, Sodium EDTA. Hence, these adsorbents can be effectively used for the removal of these heavy metals.
 
Key Words
    low-cost adsorbents; heavy metal; lead; copper; banana stem; raintree fruit
 
Address
Narayana Harish: Department of Civil Engineering, Ramaiah Institute of Technology, MSRIT Post, MSR Nagar, Bengaluru,560054, Karnataka, India

Prashanth Janardhan: Department of Civil Engineering, National Institute of Technology Silchar, Cachar, 788010, Assam, India

Sanjeev Sangami: Department of Civil Engineering, Jain College of Engineering, Belagavvi, 590014, Karnataka, India
 

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