In the current paper, the adsorption capability of gold from solution by activated carbon and functionalized graphene/carbon activated composite were studied. The results of $\mathrm{A}\mathrm{u}{\mathrm{C}\mathrm{N}}_2^{-}$ adsorption on activated carbon showed that gold adsorption could reach 60 mg/g under the optimum conditions of pH = 9 and $\mathrm{A}\mathrm{u}{\mathrm{C}\mathrm{N}}_2^{-}$ solution concentration = 1000 mg/l. Isotherm, kinetic and thermodynamic studies of gold adsorption on activated carbon were also examined. The effects of new adsorbent concentration (i.e. functionalized graphene/activated carbon composite), pH and $\mathrm{A}\mathrm{u}{\mathrm{C}\mathrm{N}}_2^{-}$ were analyzed. SEM, FT-IR and EDX were used to evaluate and measure the quality of adsorption. The results indicated that $\mathrm{A}\mathrm{u}{\mathrm{C}\mathrm{N}}_2^{-}$ adsorption of 200 mg/g could be reached under the following solution conditions: pH of 9, $\mathrm{A}\mathrm{u}{\mathrm{C}\mathrm{N}}_2^{-}$ concentration of 1000 mg/l. It was concluded that functionalized graphene/carbon activated composite could be considered a stronger adsorbent rather than activated carbon for $\mathrm{A}\mathrm{u}{\mathrm{C}\mathrm{N}}_2^{-}$. The experiment results were further validated through SEM and EDX results.

本文研究了活性炭和功能化石墨烯/碳活化复合材料对溶液中金的吸附能力。结果$\mathrm{一种}\mathrm{ü}{\mathrm{C}\mathrm{ñ}}_2^{--}$ 活性炭的吸附结果表明，在pH = 9的最佳条件下，金的吸附量可达60 mg / g。 $\mathrm{一种}\mathrm{ü}{\mathrm{C}\mathrm{ñ}}_2^{--}$溶液浓度= 1000 mg / l。还研究了金在活性炭上的吸附等温，动力学和热力学研究。新吸附剂浓度（即功能化石墨烯/活性炭复合物），pH和$\mathrm{一种}\mathrm{ü}{\mathrm{C}\mathrm{ñ}}_2^{--}$被分析。SEM，FT-IR和EDX用于评估和测量吸附质量。结果表明$\mathrm{一种}\mathrm{ü}{\mathrm{C}\mathrm{ñ}}_2^{--}$ 在以下溶液条件下，吸附量可达200​​ mg / g：pH为9， $\mathrm{一种}\mathrm{ü}{\mathrm{C}\mathrm{ñ}}_2^{--}$浓度为1000 mg / l。结论是，功能性石墨烯/碳活化复合材料可被认为是一种更强的吸附剂，而不是活性炭。$\mathrm{一种}\mathrm{ü}{\mathrm{C}\mathrm{ñ}}_2^{--}$。通过SEM和EDX结果进一步验证了实验结果。