▎ 摘　　要

In this study, a novel adsorbent was developed based on nickel oxide, strontium oxide and zirconia oxide and was anchored onto graphene oxide to produce a heterogeneous nanocomposite (NiSr-ZrO2/GO) for efficient removal of ammonia from industrial wastewater. The proposed nanocomposite was characterized using FTIR, XRD, SEM, EDX, BET, and TEM techniques. Effects of changing important parameters on the ammonia adsorption such as pH, adsorbent dosage, contact time, and initial concentration of ammonia were investigated. Different models were conducted to study the kinetics and isotherms equilibrium data of the adsorption process. The results revealed that the adsorption kinetics was well-fitted to the second-order model. The equilibrium data were well fitted on Langmuir isotherm model with a maximum monolayer adsorption capacity of 181.81 mg g(-1)(R-2= 0.997). Adding metal-containing species to graphene oxide can favorably interact with ammonia.