Adsorption of humic acid from aqueous solutions onto shellfish ash: Kinetic and isotherm studies and artificial neural network modeling

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JAMSHIDI BEHZAD; Tahmasebi Birgani Yaser; JORFI SAHAND; TAKDASTAN AFSHIN; DEHVARI MAHBOOBEH; JAMSHIDI BEHNAM

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Journal: Environmental Health Engineering and Management Journal Year:2020 | Volume:7 | Issue:4 Page(s): 219-228

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Title

Adsorption of humic acid from aqueous solutions onto shellfish ash: Kinetic and isotherm studies and artificial neural network modeling

Author(s)

Keywords

Adsorption

Humic substances

Kinetics

Shellfish

Neural network

Abstract

Background: Natural organic matters such as humic acid react with chlorine and produce disinfection by products such as trihalomethanes that are carcinogenic. In this study, Shellfish ash was used as a novel adsorbent for removal of humic acid. Methods: The present study was performed under various laboratory conditions including pH, adsorbent dose, contact time, and initial concentration of humic acid. Residual concentrations of humic acid in the samples were determined by a UV-Vis spectrophotometer at 254 nm wavelength. Artificial Neural network (ANN) modeling studies were also performed. Results: Elemental analysis showed that the Shellfish ash was 98% pure calcium. It was indicated that the maximum Adsorption capacity was achieved in acidic conditions (pH = 3) and pHzpc was found to be 10. 3. The Adsorption data followed the Langmuir model (R2 > 0. 9). The Adsorption of humic acid followed the pseudo-second-order kinetic (R2 = 0. 999). ANN modeling also provided the accurate prediction of humic acid Adsorption for testing data (R2 = 0. 989). Conclusion: According to the results, Shellfish ash is recommended as an effective biosorbent for removal of organic pollutants such as humic acid.

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APA: Copy

Tahmasebi Birgani, Yaser, JORFI, SAHAND, TAKDASTAN, AFSHIN, DEHVARI, MAHBOOBEH, & JAMSHIDI, BEHNAM. (2020). Adsorption of humic acid from aqueous solutions onto shellfish ash: Kinetic and isotherm studies and artificial neural network modeling. ENVIRONMENTAL HEALTH ENGINEERING AND MANAGMENT JOURNAL, 7(4), 219-228. SID. https://sid.ir/paper/656795/en

Vancouver: Copy

Tahmasebi Birgani Yaser, JORFI SAHAND, TAKDASTAN AFSHIN, DEHVARI MAHBOOBEH, JAMSHIDI BEHNAM. Adsorption of humic acid from aqueous solutions onto shellfish ash: Kinetic and isotherm studies and artificial neural network modeling. ENVIRONMENTAL HEALTH ENGINEERING AND MANAGMENT JOURNAL[Internet]. 2020;7(4):219-228. Available from: https://sid.ir/paper/656795/en

IEEE: Copy

Yaser Tahmasebi Birgani, SAHAND JORFI, AFSHIN TAKDASTAN, MAHBOOBEH DEHVARI, and BEHNAM JAMSHIDI, “Adsorption of humic acid from aqueous solutions onto shellfish ash: Kinetic and isotherm studies and artificial neural network modeling,” ENVIRONMENTAL HEALTH ENGINEERING AND MANAGMENT JOURNAL, vol. 7, no. 4, pp. 219–228, 2020, [Online]. Available: https://sid.ir/paper/656795/en

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