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

Bioresource Technology
Min WangLu Yao

Abstract

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 °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 cm2/g) was 31% of that for AC (1215 cm2/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.

References

Jun 25, 2005·Journal of Colloid and Interface Science·Soo-Jin Park, Byung-Joo Kim
Nov 3, 2010·Advances in Colloid and Interface Science·K Y Foo, B H Hameed

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Citations

Apr 28, 2019·Environmental Science and Pollution Research International·Kun WuPengkang Jin
Sep 27, 2020·Ecotoxicology and Environmental Safety·Jiancheng ShuRenlong Liu
Oct 28, 2020·Polymers·Umut D ÇakmakZoltán Major

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