A pharmaceutical hydrogen-bonded covalent organic polymer (pha-HCOP-1) is constructed with the formation of two types of bonds using the pharmaceutical isoniazid as a bifunctional linker. The as-synthesised pha-HCOP-1 exhibits good adsorption ability for iodine molecules.
The efficient capture and storage radioactive iodine ( 129 I or 131 I) formed during the extensive use of nuclear energy is of paramount importance. Therefore, it is a great deal to design and empolder new adsorbents for effectively disposing of iodine from nuclear waste. In this work, we presented a novel covalent organic polymer (JLUE-COP-3) constructed through heterostructural mixed linkers with perforated porousness, plenty of π-conjugated phenyl rings and functional -CO-NH-and -SO 3 H groups to iodine adsorption process. After fully characterizing the morphology and structure, the adsorption behavior of iodine by the resultant polymers were explored in detail. The external adsorption behavior was determined to obey the pseudo-second order kinetic model according to the kinetic analysis. The maximum liquid adsorption capacity was obtained to reach 153.85 mg/g at 298 K, which was evaluated by the Langmuir isotherm model. In addition, the negative attributes of G • as well as the positive attributes of H • and S • at three temperatures indicated the nature of the iodine adsorption over JLUE-COP-3 was spontaneous and endothermic. The current study could look forward to making great contributions to the facile fabrication of late-model three-component POP materials and their applications in treatment of nuclear waste.
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 (NH3–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 NH3–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.
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