Isothermal and Kinetic Evaluation of Adsorption Fish Farm Effluents by Nanocomposites (Chitosan and Activated Carbon)

Document Type : Original Article


1 Department of Environmental Sciences, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.

2 Department of Fisheries and Aquatic Ecology, Faculty of Fisheries and Environmental Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran.

3 Department of Environmental Health Engineering, Faculty of Health, Golestan University of Medical Sciences, Gorgan, Iran.

4 Department of Environmental Pollution, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Tehran, Iran.



Background: In wastewater treatment, removal of phosphate and ammonia is of great importance. Chitosan is a copolymer, which can be applied in low-cost adsorption. Thus, in this study, chitosan and activated carbon nanocomposite adsorbents were prepared to remove organic pollutants from the fish farm effluents.
Methods: This study was performed at different physicochemical conditions of pH (5-8), effluent dose (25-100 mg/L), and contact time (15-90 min) minutes. Adsorption isotherm studies were analyzed using Freundlich, Langmuir models, and adsorption kinetics studies.
Results: The Langmuir and Freundlich isotherms for nitrite (R2=0.9076, R2=0.5911), phosphate (R2=0.9307, R2=0.5755), and ammonia (R2=0.7288 and R2=0.7549) were respectively obtained. According to the results, the data of nitrite and phosphate pollutants were more consistent with the Langmuir model, but the data of ammonia pollutants were more consistent with the Freundlich. The best optimal adsorption occurred at a pH=7. Elevation of the initial concentration of the pollutant led to the depletion of the removal functions. With increasing the contact time, adsorption efficiency increased.
Conclusion: Finally, with respect to the obtained elimination percentage (R=99.98%), chitosan and activated carbon nanocomposites have a high ability to remove organic pollutants.


Main Subjects

  1. Hayati M, Tourani S. [Experimental study on removal of mercury from aqueous solutions by using magnetite Carbon Nanotube (CNT) as adsorbent (Persian)]. J Water Wastewater. 2019; 30(6):63-77. [DOI:10.22093/WWJ.2019.138327.2709]
  2. Yousefi Z, Mohammadpour-Tahamtan RA, Mashayekh-Salehi A. [The efficiency of bivalve mollusk shell in removal of lead [Pb (II)] from aqueous solutions by Central Composite Design model (CCD) and optimization of effective parameters (Persian)]. J Mazandaran Univ Med Sci. 2014; 23(108):54-67.
  3. Park KH, Kim SJ, Jeong YH, Moon HJ, Song HJ, Park YJ. Fabrication and biological properties of calcium phosphate/chitosan composite coating on titanium in modified SBF. Mater Sci Eng C. 2018; 90:113-8. [DOI:10.1016/j.msec.2018.04.060] [PMID]
  4. Zheng L, Wang Ch, Shu Y, Yan X, Li L. Utilization of diatomite/chitosan-Fe (III) composite for the removal of anionic azo dyes from wastewater: Equilibrium, kinetics and thermodynamics. Colloids Surf A Physicochem Eng Asp. 2015; 468:129-39. [DOI:10.1016/j.colsurfa.2014.12.015]
  5. Jonoobi M, Shafie M, Shirmohammadli Y, Ashori AR, Zarea-Hosseinabadi H, Mekonnen T. A review on date palm tree: Properties, characterization and its potential applications. J Renew Mater. 2019; 7(11):1055-75. [DOI:10.32604/jrm.2019.08188]
  6. Nouri Dodaran P, Fataei E, Khanizadeh B. [Study on photocatalytic and sonocatalytic activity of Bi2O3 synthesized by Sol-gel method in removing organic compounds of Ardabil textile factory effluents (Persian)]. J Water Wastewater. 2019; 30(4):67-77. [DOI:10.22093/WWJ.2018.110808.2566]
  7. Cho DW, Jeon BH, Chon CM, Schwartz FW, Jeong Y, Song H. Magnetic chitosan composite for adsorption of cationic and anionic dyes in aqueous solution. J Ind Eng Chem. 2015; 28:60-6. [DOI:10.1016/j.jiec.2015.01.023]
  8. Shokouh Saljoghi Z, Malekpour A, Rafiee GR, Imani A, Bakhtiary M. [Removal of nitrite and nitrate from Recirculation Aquaculture System effluent (RAS) by modified bentonites (Persian)]. J Water Wastewater. 2011; 22(2):46-54.
  9. Rahimi K, Mirzaei R, Akbari A, Mirghaffari N, Yoonesnia A. [Optimization of red 46 dye removal using magnetic polymeric adsorbent prepared from polyacrilonitrile fibers (Persian)]. J Water Wastewater. 2019; 30(4):109-21. [DOI:10.22093/WWJ.2018.113405.2585]
  10. Bozorgpour F, Fasih Ramandi H, Jafari P, Samadi S, Sharif Yazd Sh, Aliabadi M. Removal of nitrate and phosphate using chitosan/Al2O3/Fe3O4 composite nanofibrous adsorbent: Comparison with chitosan/Al2O3/Fe3O4 Int J Biol Macromol. 2016; 93(Pt A):557-65. [DOI:10.1016/j.ijbiomac.2016.09.015] [PMID]
  11. Binaeian E, Babaee Zadvarzi S, Hoseinpour Kasgari AR, Ebrahimnezhd Afrouzi M. [In situ synthesis of chitosan-grafted polyacrylamide loaded by TiO2 nanoparticles for the adsorption of sirius yellow K-CF from aqueous media: Isotherm, kinetic and thermodynamic studies (Persian)]. J Water Wastewater. 2019; 30(5):16-30. [DOI:10.22093/WWJ.2018.134555.2694]
  12. Abdollahi Garekand J, Sepehr E, Feiziasl V, Rasouli-Sadaghiani MH, Samadi A. [Comparison of the efficiency of unmodified and chemically modified low-cost biosorbents in the removal of lead from aqueous solutions (Persian)]. J Water Wastewater. 2019; 30(5):1-15. [DOI:10.22093/WWJ.2019.121811.2644]
  13. Zhao Y, Guo L, Shen W, An Q, Xiao Z, Wang H, et al. Function integrated chitosan-based beads with throughout sorption sites and inherent diffusion network for efficient phosphate removal. Carbohydr Polym. 2020; 230:115639. [DOI:10.1016/j.carbpol.2019.115639][PMID]
  14. Tyagi S, Rawtani D, Khatri N, Tharmavaram M. Strategies for nitrate removal from aqueous environment using nanotechnology: A review. J Water Process Eng. 2018; 21:84-95. [DOI:10.1016/j.jwpe.2017.12.005]
  15. Mor S, Chhoden K, Negi P, Ravindra Kh. Utilization of nano-alumina and activated charcoal for phosphate removal from wastewater. Environ Nanotechnol. Monit Mana 2017; 7:15-23. [DOI:10.1016/j.enmm.2016.11.006]
  16. Pu Sh, Deng D, Wang K, Wang M, Zhang Y, Shangguan L, et al. Optimizing the removal of nitrate from aqueous solutions via reduced graphite oxide-supported nZVI: Synthesis, characterization, kinetics, and reduction mechanism. Environ Sci Pollut Res Int. 2019; 26(4):3932-45. [DOI:10.1007/s11356-018-3813-1][PMID]
  17. Nasiri J, Motamedi E, Naghavi MR, Ghafoori M. Removal of crystal violet from water using β-cyclodextrin functionalized biogenic zero-valent iron nanoadsorbents synthesized via aqueous root extracts of Ferula persica. J Hazard Mater. 2019; 367:325-38. [DOI:10.1016/j.jhazmat.2018.12.079][PMID]
  18. Douzandeh Ziabari P, Dehghani Ghanateghestani M. [Experimental study of removal heavy metal of arsenic from water using nano absorber iron oxide/N- isopropyl acrylamide/chitosan (Persian)]. J Water Wastewater. 2019; 30(6):78-89. [DOI:10.22093/WWJ.2019.150721.2757]
  19. Ekhlasi L, Younesi H, Mehraban Z, Bahramifar N. [Synthesis and application of chitosan nanoparticles for removal of lead ions from aqueous solutions (Persian)]. J Water Wastewater. 2013; 24(1):10-8.
  20. Ramavandi B, Barikbin B, Asgari Gh, Ghaedi H. [Efficacy evaluation of activated carbon prepared from date stones in cyanide adsorption from synthetic wastewater (Persian)]. J Birjand Univ Med Sci. 2013; 19(4):399-408.
  21. Thirugnanasambandham K, Sivakumar V, Prakash Marn J, Kandasumy S. Chitosan based grey wastewater treatment--A statistical design approach. Carbohydr Polym. 2014; 99:593-600. [DOI:10.1016/j.carbpol.2013.08.058][PMID]
  22. Dong Ch, Chen W, Liu Ch. Preparation of novel magnetic chitosan nanoparticle and its application for removal of humic acid from aqueous solution. Appl Surf Sci. 2014; 292:1067-76. [DOI:10.1016/j.apsusc.2013.12.125]