COMPREHENSIVE UTILIZATION OF PHOSPHOGYPSUM: ADSORPTION OF METHYLENE BLUE AND ITS APPLICATION IN BRICKS

被引：4
|
作者：
Gao, Ya [1 ,2 ]
Sun, Di [1 ]
Han, Chengliang [1 ,2 ]
Huang, Junjun [1 ,2 ]
机构：
[1] Hefei Univ, Sch Energy Mat & Chem Engn, Hefei, Peoples R China
[2] Hefei Univ, Ctr Anal & Testing, Hefei, Peoples R China
来源：
SURFACE REVIEW AND LETTERS | 2021年 / 28卷 / 09期
关键词：
Adsorption; phosphogypsum; methylene blue; PG-bricks; AQUEOUS-SOLUTION; PHOTOCATALYTIC DEGRADATION; REMOVAL; MEMBRANE; GYPSUM; IMPURITIES; WASTE; NANOPARTICLES; PURIFICATION; COMPOSITES;
D O I：
10.1142/S0218625X2150075X
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this work, comprehensive utilization of phosphogypsum was developed. Methylene blue (MB) in aqueous solution was adsorbed by waste phosphogypsum (PG), and then the MB-adsorbed PG was used to the fabrication of PG bricks. The adsorption mechanism and the strength of PG bricks also have been studied. The dye maximum capacity of PG monolayer adsorption was found to be 0.2mg/g. The kinetic behavior is more accordant with the intra-particle diffusion equation. The MB-adsorbed PG could be effectively used as a raw material for building material. The mechanical properties of PG bricks were little different from the one of the water-washed PG bricks. The 2h-flexural and compressing strengths were about 2.8MPa and 6MPa, the dry-flexural and compressing strengths were about 5MPa and 20MPa.
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页数：7
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