Environmental Health Engineering and Management Journal
Environmental Health Engineering and Management Journal
Environ. Health Eng. Manag.
Medical Sciences
http://ehemj.com
1
admin
2423-3765
2423-4311
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8888
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jalali
1399
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gregorian
2020
10
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online
1
fulltext
en
Adsorption of humic acid from aqueous solutions onto shellfish ash: Kinetic and isotherm studies and artificial neural network modeling
عمومى
General
مقاله اصیل
Original Article
<div style="text-align: justify;">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.<br>
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.<br>
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).<br>
Conclusion: According to the results, shellfish ash is recommended as an effective biosorbent for removal of organic pollutants such as humic acid.</div>
Adsorption, Humic substances, Kinetics, Shellfish, Neural network
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http://ehemj.com/browse.php?a_code=A-10-1-185&slc_lang=en&sid=1
Behzad
Jamshidi
behzadjamshidi65@yahoo.com
10031947532846007298
10031947532846007298
No
Department of Environmental Health Engineering, Faculty of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Yaser
Tahmasebi Birgani
tahmasebi-y@ajums.ac.ir
10031947532846007299
10031947532846007299
No
Department of Environmental Health Engineering, Faculty of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Sahand
Jorfi
sahand369@yahoo.com
10031947532846007300
10031947532846007300
No
Department of Environmental Health Engineering, Faculty of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Afshin
Takdastan
afshin_ir@yahoo.com
10031947532846007301
10031947532846007301
No
Department of Environmental Health Engineering, Faculty of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Mahboobeh
Dehvari
mahboobehdehvari@yahoo.com
10031947532846007302
10031947532846007302
Yes
Corresponding author: Department of Environmental Health Engineering, Faculty of Public Health, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
Behnam
Jamshidi
behnamjamshidi2020@gmail.com
10031947532846007303
10031947532846007303
No
Department of Environmental Engineering, Faculty of Environment and Natural Resources, Malayer University, Malayer, Iran