Radioactivity of Five Typical General Industrial Solid Wastes and its Influence in Solid Waste Recycling

Zhang, Shen; Zhang, Qin; Cheng, Wei; Chen, Qianlin

doi:10.3390/min9030168

Cited by 9 publications

(3 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, RM can be developed as an alkali-activated material for practical application to the construction industry. However, RM cannot exceed a certain amount in building materials; for example, the portion of RM generated in building materials in Guizhou, China, should be less than 75.44% by contribution analysis of nuclides to radiation [38,39]. Several studies were conducted on the application of YPS and RM as building material additives.…”

Section: Introductionmentioning

confidence: 99%

Study on the Preparation and Fracture Behavior of Red Mud-Yellow Phosphorus Slag-Based Concrete

Zhang

Mao

et al. 2019

Advances in Materials Science and Engineering

Self Cite

View full text Add to dashboard Cite

Serious environmental pollution issues caused by the storage and exposure of large amounts of red mud (RM) and yellow phosphorus slag (YPS) have raised significant concerns. Red mud-yellow phosphorous slag-cement concrete (RM-YPS-CC) is prepared with 25% yellow phosphorus slag content (YPSC) and 10% red mud content (RMC) to replace a portion of the cement at the age of 28 days and was found in this study to satisfy the mechanical property requirements. More ettringite and portlandite were generated with the RM-YPS-CC than with the yellow phosphorous slag-cement concrete (YPS-CC). In addition, the cementitious materials were more interlaced, and there was more disorder in the crystals of the RM-YPS-CC, which formed a more complex spatial structure than the YPS-CC did. Without RM, the initial cracking strength on the surface of the concrete was 5–6 MPa, the maximum crack width was 3.96 mm, and the crack number was 8. However, the cracking strength was 26.5–27 MPa with RMC5, the maximum crack width was 0.66 mm with RMC15, and the crack number was 3 with RMC15. Moreover, studies using the digital image correlation (DIC) method indicated that the displacement distribution and evolution of the first crack area changed quickly at 10 MPa in either horizontal or vertical direction, and a similar trend was maintained from 10 MPa to 27.1 MPa for the YPS-CC. However, with a small distribution and evolution of horizontal or vertical displacement from 5 MPa to 25 MPa, the evolution would change rapidly when reaching 30 MPa for RM-YPS-CC. This study aims to provide new insights into the wide application of YPS and RM for saving energy and reducing emissions and to develop a new method to study the fracture behavior of concrete.

show abstract

Section: Introductionmentioning

confidence: 99%

Study on the Preparation and Fracture Behavior of Red Mud-Yellow Phosphorus Slag-Based Concrete

Zhang

Mao

et al. 2019

Advances in Materials Science and Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…Amrani et al [10] found that phosphate wastes could be successfully used as natural aggregates similar to conventional materials frequently used in road infrastructure. The study of Shen et al [11] provided a quantitative analysis indicating the safe use of these wastes in building. Other work [12] has implemented the phosphate waste clay in surface thin layer in order to remediate contaminated soils by metallic tailing residues and to stabilize heavy metals avoiding their mobility and release through the alkaline pH of such calcium waste clay.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Investigations on Conductive Drying of Phosphate Washing Waste Clay

et al. 2021

View full text Add to dashboard Cite

Morocco is the leading producer of phosphate and its derivatives in the world with a total production of 35 Mt. However, the extraction and the valorization of this mine generate huge quantities of phosphate washing waste clay (PHWWC) that constitute a main environmental and economic concern. To facilitate this waste clay storage and handling, it is necessary to decrease its moisture content that represents 80% of PHWWC. The present paper is devoted to studying the conductive drying of PHWWC. Drying experiments were conducted in a laboratory pilot. Afterwards, the experiment results were implemented in a one-dimensional numerical model of heat and mass transfer in a porous media to identify the drying parameters and performances. It was found that most of the water contained in PHWWC is free water that is removed with a constant drying rate. The volume reduction with a marked cracks phenomenon attained 65% without any significant effect of drying temperature and sample thickness. The effective moisture diffusivity of the PHWWC for a conductive drying process is ranged between 10−9 and 1.1 × 10−8 m2·s−1. The thermal efficiency of the drying system is up to 86%. The results could be used for the purpose of design and scale-up of the industrial dryer based on laboratory-scale experiments.

show abstract

“…It was demonstrated that phosphogypsum can be used in a sustainable way in cemented paste backfill applications [10,11]. The radioactivity of different industrial solid wastes, phosphogypsum among them, was assessed by Shen et al [12]. The study provided a quantitative analysis for the safe use of the evaluated wastes in Guizhou building materials.…”

mentioning

confidence: 99%

Editorial for Special Issue: “Recent Trends in Phosphate Mining, Beneficiation and Related Waste Management”

Taha

Benzaazoua

2019

Minerals

View full text Add to dashboard Cite

show abstract

Radioactivity of Five Typical General Industrial Solid Wastes and its Influence in Solid Waste Recycling

Cited by 9 publications

References 52 publications

Study on the Preparation and Fracture Behavior of Red Mud-Yellow Phosphorus Slag-Based Concrete

Study on the Preparation and Fracture Behavior of Red Mud-Yellow Phosphorus Slag-Based Concrete

Experimental and Numerical Investigations on Conductive Drying of Phosphate Washing Waste Clay

Editorial for Special Issue: “Recent Trends in Phosphate Mining, Beneficiation and Related Waste Management”

Contact Info

Product

Resources

About