A novel mesoporous zeolite-activated carbon composite as an effective adsorbent for removal of ammonia-nitrogen and methylene blue from aqueous solution

作者：Wang, Min; Xie, Ruzhen; Chen, Yao; Pu, Xiaoqin; Jiang, Wenju; Yao, Lu^*

来源：Bioresource Technology, 2018, 268: 726-732.

DOI：10.1016/j.biortech.2018.08.037

• Zeolite-activated carbon composite
• Mesoporous
• Methylene blue
• Ammonia-nitrogen
• Adsorption

A mesoporous zeolite-activated carbon composite (Z-AC) was prepared by hydrothermal synthesis method for both ammonia-nitrogen (NH3-N) and methylene blue (MB) removal from aqueous solution. For Z-AC with the reparation temperature of 90 degrees C and kaolin/AC = 4, the adsorption capacity of MB (754.75 mg/g, 298 K) was 83% of that for pure AC, and the adsorption capacity of NH3-N were 9.00 mg/g, which was higher than that for AC and Z (the kaolin after hydrothermal treatment). The Z-AC exhibited obvious mesoporous structure, the SBET of the Z-AC (378 cm(2)/g) was 31% of that for AC (1215 cm(2)/g). The introduction of a small amount of AC into Z increased the SBET of Z, thus, the adsorption capacity of MB was improved dramatically. On the other hand, the dispersion of Z was enhanced by adding AC, which promoted the contact between Z and NH3-N, and then led to improvement of the NH3-N adsorption.

• 出版日期2018-11
• 单位四川大学