Your browser doesn't support javascript.
loading
Characteristic pollutants risk assessment of modified manganese residue utilization in sintered product.
Wang, Chao-Qiang; Liu, Ke; Huang, De-Ming; Huang, Qi-Cong; Wang, Pei-Xin; Mei, Xu-Dong; Li, Shu-Chun.
Afiliación
  • Wang CQ; School of Material Science and Engineering, Chongqing Jiaotong University, Chongqing, 400074, China.
  • Liu K; Chongqing Haopan Energy Saving Technology Co. Ltd, Chongqing, 401329, China.
  • Huang DM; Chongqing Institute of Modern Construction Industry Development, Chongqing, 400039, China.
  • Huang QC; School of Material Science and Engineering, Chongqing Jiaotong University, Chongqing, 400074, China. 1147319057@qq.com.
  • Wang PX; School of Material Science and Engineering, Chongqing Jiaotong University, Chongqing, 400074, China.
  • Mei XD; Chongqing Institute of Modern Construction Industry Development, Chongqing, 400039, China.
  • Li SC; CSCEC Strait Construction and Development Co., Ltd, Fuzhou, 350015, China.
Environ Sci Pollut Res Int ; 29(58): 88369-88382, 2022 Dec.
Article en En | MEDLINE | ID: mdl-36334196
ABSTRACT
The resource disposal of electrolytic manganese residue can effectively solve the problem of environmental pollution caused by it, among which the problem of heavy metal pollution is the most prominent. In this study, a new type of eco-friendly brick mixed with electrolytic manganese residue was designed. The influence of the content of electrolytic manganese residue on its macroscopic properties, microscopic properties, and leaching characteristics was analyzed by test methods such as compressive strength test, radioactivity test, XRF, XRD, FTIR, and ICP test of bricks. The results showed that the manganese content in the EMR leachate was 8120 mg/L, which exceeded the Chinese standard. The leaching experiment of ordinary aqueous solution of sintered bricks mixed with 20% EMR showed that the content of heavy metals was far lower than the Chinese national standard. There was no non-carcinogenic risk of heavy metals in the strong acid leaching solution of sintered bricks mixed with 20% EMR. Only the carcinogenic risk values of Cr for adults and children were 4.21 × 10-4 and 9.82 × 10-4 respectively, both exceeding the USEPA limit, but the application scene of sintered bricks was difficult to achieve strong acidity, so it was judged that it had no carcinogenic risk to the human body. Characteristic heavy metals such as Mn, Cr, and As existed stably in sintered bricks through substitution and encapsulation. In addition, the compressive strength and radioactivity of EMR sintered bricks met the requirements of the Chinese national standard "Fired Ordinary Bricks." This product can be used as national standard MU20 grade brick. This study provided an efficient method for the safe and environmentally friendly disposal of EMR in a sustainable control system.
Asunto(s)
Palabras clave

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Metales Pesados / Contaminantes Ambientales Tipo de estudio: Etiology_studies / Risk_factors_studies Límite: Child / Humans Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2022 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Metales Pesados / Contaminantes Ambientales Tipo de estudio: Etiology_studies / Risk_factors_studies Límite: Child / Humans Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2022 Tipo del documento: Article País de afiliación: China