Application of modified chitosan-based aerogel in constructing biofilter of mariculture wastewater
YE Tingting
LIN Yuanbin
LI Min
SU Zengjian
Abstract：The aerogels were prepared from chitosan and coconut shell fiber with freeze-drying method.The properties of the material and the removal efficiency of nutrients from mariculture wastewater by immobilized degradation bacteria were investigated.The experimental results showed that the modified aerogel has a good floatability and a mass transfer performance,the adsorption kinetics accords with quasi first order kinetic model and sorption isotherm with Langmuir model.The improved aerogel could efficiently adsorb COD(chemical oxygen demand),ammonium and nitrite degrading strains,with an increase of 48.82％,9.14％and 40.74％compared with free bacteria,respectively.In the simulated shrimp pond,the degradation rates of COD,ammonium and nitrite were 52.6％,55.55％and 98.49％respectively within 10 days.
Keywords：Chitosan coconut fiber aerogelimmobilization of bacteriapurificationaquaculture wastewater
Publication Date：2025-10-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：9( 97-105 )