Resource utilization of solid waste carbide slag: a brief review of application technologies in various scenes

Wang, Hongxia; Xu, Wanyi; Sharif, Maimoona; Cheng, Guangxu; Zhang, Zaoxiao

doi:10.1007/s42768-021-00090-z

Cited by 32 publications

(5 citation statements)

References 90 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the present study, we explored the complete pathway, including generation of CCR, preparation of hybrid material, filament extrusion and testing in 3D printing. It should be noted that CCR is significantly different from pure calcium hydroxide 69 . The composition of CCR includes many impurities since the initial calcium carbide is of technical grade.…”

Section: Resultsmentioning

confidence: 88%

Sustainable application of calcium carbide residue as a filler for 3D printing materials

Samoylenko

Rodygin

Ananikov

2023

Sci Rep

View full text Add to dashboard Cite

Industrial activity results in ton-scale production of calcium carbide and generation of a significant amount of calcium carbide residue (CCR), which is often disposed of in the environment as waste. CCR is an active chemical, and rain washes away alkali from sludge, changing the pH of soils and water and damaging the environment. In this work, we explored new opportunities for the utilization of CCR in view of the coming industrial uptake of digital design and additive technologies. Amazingly, CCR can be successfully used as a filler for the modification of 3D printed materials towards the introduction of hybrid organic/inorganic frameworks. A series of commercially available plastics (PLA, ABS, Nylon, PETG, SBS) were successfully used as matrices for CCR-based composite production with high CCR contents up to 28%. Tensile analyses showed increases in tensile strength and Young’s modulus of 9% and 60%, respectively. Moreover, in comparison with the pure plastics, the CCR-based materials better maintained the digitally designed shape (lower shrinkage). Importantly, CCR-filled materials are 3D printable, making them very promising components in the building sector. Considering the amount of already available CCR stored in the environment, this material is available in large quantities in the near future for hybrid materials, and anticipated opportunities exist in the additive manufacturing sector. The involvement of CCR in practical composite materials is equally important for environmental protection and reuse of already available multiple-ton wastes.

show abstract

Section: Resultsmentioning

confidence: 88%

Sustainable application of calcium carbide residue as a filler for 3D printing materials

Samoylenko

Rodygin

Ananikov

2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The mineralization of CO 2 using alkaline industrial solid waste has been extensively studied due to the intrinsic alkalinity and Ca/Mg-rich advantages of such waste [ 12 , 13 , 14 ]. Calcium carbide slag (CS) is a solid waste produced by chlor-alkali industry, which contains a number of alkaline substances [ 15 , 16 ]. Wang et al pointed out that the development of calcium carbide slag treatment technology is limited due to the high treatment cost and low utilization rate [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

“…Calcium carbide slag (CS) is a solid waste produced by chlor-alkali industry, which contains a number of alkaline substances [ 15 , 16 ]. Wang et al pointed out that the development of calcium carbide slag treatment technology is limited due to the high treatment cost and low utilization rate [ 16 ]. Calcium-cycling technology is a common way for calcium carbide slag to absorb CO 2 [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Research on Utilizable Calcium from Calcium Carbide Slag with Different Extractors and Its Effect on CO2 Mineralization

Ma,

Zhang,

et al. 2024

Materials

View full text Add to dashboard Cite

With the increasing accumulation of alkaline industrial solid waste, the mineralization of CO2 using alkaline industrial solid waste has broad application prospects. Carbide slag is highly alkaline and contains a large amount of calcium elements, making it an excellent material for CO2 mineralization. Our idea was to acquire qualified products and fast kinetics by integrating carbide slag utilization and carbon reduction. The reaction route was divided into two steps: calcium extraction and carbonization. In order to achieve efficient extraction of utilizable calcium, we selected NH4Ac as the extraction agent, which has the advantage of buffer protection and environmental friendliness due to being an acetate radical. The extraction efficiency of utilizable calcium exceeded 90% under the conditions of L/S 20:1 and NH4+/Ca2+ 2:1. In the carbonization process, the crystal forms of CaCO3 synthesized by direct carbonation, acid extraction, and ammonium salt were characterized. The formation mechanism of vaterite in ammonium solution and the influence of impurities (Al3+, Mg2+) on the crystal transformation were revealed. This study provides technical support for using alkaline industrial waste to prepare high-purity vaterite. Therefore, alkaline industrial waste can be efficiently and sustainably utilized through CO2 mineralization.

show abstract

“…As the world is facing an urgent energy crisis, there is an immediate need to conserve energy and improve the efficiency of energy utilization [3]. In addressing this challenge, other primary design goals include reducing pressure losses for working fluids and 2achieving cost-efficiency outcomes without compromising their performance [4,5].…”

Section: Introductionmentioning

confidence: 99%

Machine Learning Assisted Microchannel Geometric Optimization—A Case Study of Channel Designs

Huang,

Zou,

Liu

et al. 2023

Energies

View full text Add to dashboard Cite

At present, microchannel heat exchangers are widely applied in the fields of air-conditioning and heat pumping applications given their high heat transfer performance, compact size, and low material cost. However, designing and optimizing the channel geometries remain challenging, as they require balancing multiple competing objectives to achieve the optimal performance. This study investigates various parameters, including the channel count, wetted perimeter, cross-sectional area, and mass flow rate for each channel, to achieve the optimal efficiency. The optimization objectives include maximizing the heat transfer rate, minimizing the refrigerant convective thermal resistance, maximizing the refrigerant heat transfer coefficient, and minimizing the pressure drop. A multi-objective genetic optimization algorithm, in conjunction with artificial neural network (ANN)-based machine learning models, was used to predict the heat transfer rate to speed up the calculation process during the optimization. We identified that a gradient reduction in the wetted perimeter from the air inlet along the airflow direction could enhance the heat transfer rate. Additionally, the results indicate that an increase in the number of channels leads to an enhanced heat transfer efficiency rate. However, with the increase in the number of channels, the cross-sectional area of each channel is correspondingly reduced to maintain a consistent overall cross-sectional area. This reduction increases the fluid resistance, leading to an increased pressure drop across the system. This observation is critical for a microchannel design optimization, highlighting the importance of attaining a balance between achieving a higher heat transfer efficiency and maintaining a favorable fluid dynamic performance.

show abstract

Resource utilization of solid waste carbide slag: a brief review of application technologies in various scenes

Cited by 32 publications

References 90 publications

Sustainable application of calcium carbide residue as a filler for 3D printing materials

Sustainable application of calcium carbide residue as a filler for 3D printing materials

Research on Utilizable Calcium from Calcium Carbide Slag with Different Extractors and Its Effect on CO2 Mineralization

Machine Learning Assisted Microchannel Geometric Optimization—A Case Study of Channel Designs

Contact Info

Product

Resources

About