A Novel Material for the Removal of Zinc from Wastewater Using Sterculia Foetida

  • Vijetha PonnamEmail author
  • Subbaiah Tondepu
  • Ramesh Naidu Mandapati
  • Murali Naik
  • Ranganadha Reddy Aluri
  • Naresh Katari
Original Contribution


In the present work, optimization using central composite design (CCD) was studied to determine the ideal conditions for the adsorption of zinc using Sterculia foetida. The effect of four process parameters, such as time (30–240 min), initial concentration (10–100 mg/L), adsorbent dosage (0.1–1 g), and pH (3–10), was studied to obtain the best results for zinc adsorption on to Sterculia foetida using CCD. With these ranges, CCD has given 30 possible experimental runs. From the desirability values, the optimum values of initial concentration (20 mg/L), adsorbent dosage (0.1 g), and pH (10) were obtained with  % removal value of 89.5. From the results obtained, it was clear that pH and initial concentration play a major role in the adsorption of zinc on to Sterculia foetida with p value equal to 0.0413 and 0.0005, respectively. The model F value obtained was 2.84, which implies that the quadratic model is significant.


Optimization Biosorbent Central composite design Sterculia foetida Response surface methodology 



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Copyright information

© The Institution of Engineers (India) 2019

Authors and Affiliations

  • Vijetha Ponnam
    • 1
    Email author
  • Subbaiah Tondepu
    • 1
  • Ramesh Naidu Mandapati
    • 1
  • Murali Naik
    • 1
  • Ranganadha Reddy Aluri
    • 2
  • Naresh Katari
    • 3
  1. 1.Department of Chemical EngineeringVFSTR (Deemed to be) UniversityVadlamudiIndia
  2. 2.Department of BiotechnologyVFSTR (Deemed to be) UniversityVadlamudiIndia
  3. 3.Department of ChemistryGEETHAM (Deemed to be university)HyderabadIndia

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