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Degradation of Coking Wastewater under Microwave Irradiation in the Presence of Modified Activated Carbon
Author(s) -
Gao Yu,
Zou Donglei,
Liu Yuzhi,
Guan Heda,
Sun Wentian
Publication year - 2019
Publication title -
clean – soil, air, water
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 66
eISSN - 1863-0669
pISSN - 1863-0650
DOI - 10.1002/clen.201900095
Subject(s) - wastewater , activated carbon , adsorption , degradation (telecommunications) , microwave , carbon fibers , materials science , irradiation , chemical oxygen demand , pollutant , scanning electron microscope , nuclear chemistry , catalysis , nitrogen , microwave irradiation , chemical engineering , oxide , chemistry , waste management , organic chemistry , composite material , metallurgy , telecommunications , physics , quantum mechanics , composite number , computer science , nuclear physics , engineering
In this study, a new material consisting of activated‐carbon‐containing magnetic oxide is prepared for assisted microwave (MW) irradiation treatment of coking wastewater. The optimum condition for degrading coking wastewater is 98.14% chemical oxygen demand (COD), under which 87.57% ammonia nitrogen (NH 3 –N) can be removed. The results are verified by GC–MS, showing that most organic pollutants can be adsorbed by modified activated carbon (MAC). The surface morphology and elemental composition of MAC before and after microwave irradiation and adsorption is determined by scanning electron microscopy. After microwave irradiation, many apertures of pores looked relatively large. It can be shown that MAC as a catalyst in the microwave‐assisted treatment process has many advantages, including rapid degradation of COD and NH 3 –N. In conclusion, microwave‐irradiation‐assisted MAC treatment of coking wastewater is a novel technology that is economical, efficient, and has broad prospects for development.