Tement: Not applicable. Informed Consent Statement: Not applicable. Conflicts of Interest: The authors declare no D-4-Hydroxyphenylglycine web conflict of interest.
applied sciencesArticleRemoval of Cesium from Radioactive Waste Liquids Utilizing GeomaterialsHaixin Zhang 1 , Mingze Zhu 1 , Xiaoyu Du 1,2 , Sihan Feng 1,3 , Naoto Miyamoto four and Naoki Kano 4, 3Graduate College of Science and Technology, Niigata University, 8050 Ikarashi 2Nocho, Nishiku, Niigata 9502181, Japan; [email protected] (H.Z.); [email protected] (M.Z.); [email protected] (X.D.); [email protected] (S.F.) Heilongjiang Provincial Crucial Laboratory of Surface Active Agent and Auxiliary, Qiqihar University, Qiqihar 161006, China Daqing Petrochemical Investigation Center, two Chengxiang Road, Yixi, Longfeng District, Daqing 163311, China Division of Chemistry and Chemical Engineering, Faculty of Engineering, Niigata University, 8050 Ikarashi 2Nocho, Nishiku, Niigata 9502181, Japan; [email protected] Correspondence: [email protected]; Tel.: 81025262Citation: Zhang, H.; Zhu, M.; Du, X.; Feng, S.; Miyamoto, N.; Kano, N. Removal of Cesium from Radioactive Waste Liquids Utilizing Geomaterials. Appl. Sci. 2021, 11, 8407. https:// doi.org/10.3390/app11188407 Academic Editor: Dibyendu Sarkar Received: 16 August 2021 Accepted: eight September 2021 Published: ten SeptemberAbstract: Within this study, we investigated the removal of Cs from aqueous options utilizing geomaterials. Adsorption was chosen as an efficient process to develop for the removal of Cs from radioactive waste liquids. Geomaterials, which Bendazac MedChemExpress includes fly ash and slag as raw components, were ready as adsorbents employing an alkali activator. The supplies had been characterized by Xray diffraction (XRD); scanning electron microscopy with energy dispersive spectrometer (SEMEDS); and BET surface region, pore volume, and pore size analysis. The effects of different parameters, including pH, speak to time, and adsorbent dosage on the adsorption from the Cs had been studied. The partition coefficient (Pc) also as the adsorption capacity have been evaluated to assess the accurate functionality of your adsorbent within this function. The fly ashbased geomaterials showed a maximum Cs adsorption capacity of 89.32 mg 1 and also a higher Pc of 31.02 mg 1 M1 for the Cs below our experimental situations. From this function, this approach may be regarded being sensible for use as a prospective adsorbent for treating Cs in wastewater. Furthermore, the immobilization of Cs in geomaterials was explored from a chemical point of view. In conclusion, fly ashbased geomaterials may be a promising selection for the treatment and disposal of nuclearcontaminated waste. Keywords and phrases: cesium (Cs); radioactive waste liquid; fly ash; geomaterials; adsorption capacity; partition coefficient1. Introduction With all the improvement of contemporary science and technology, nuclear power has been extensively applied in industry, national defense, agriculture, medicine, and scientific investigation. Having said that, radioactive waste liquid has been produced with the rapid improvement on the nuclear sector. For example, due to the Fukushima Daiichi nuclear energy plant accident in Japan in 2011, a substantial volume of radioactive material leaked, and a substantial volume of wastewater containing radioactive cesium (Cs) was discharged. As these waste liquids are radioactive and may bring about immeasurable harm to the environment and human bodies. Among them, 137 Cs could be the most typical radionuclide within this style of waste liquid; it produces continuous radi.