Flocculation behavior, mechanics, and optimization of tailings based on multi-objective: Insight into the concentration and time-dependent floc size

Wang, Zhenqi; Wu, Aixiang; Ruan, Zhuen; Bürger, Raimund; Wang, Shaoyong; Mo, Yi

doi:10.1016/j.powtec.2024.119718

Powder Technology

2024

DOI: 10.1016/j.powtec.2024.119718

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Flocculation behavior, mechanics, and optimization of tailings based on multi-objective: Insight into the concentration and time-dependent floc size

Zhenqi Wang,

Aixiang Wu,

Zhuen Ruan

et al.

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Cited by 3 publications

References 42 publications

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Influence of flocculation structure on time-dependent fluidity and rheological property of cement paste: Analytical models based on fractal theory

Chen,

Zhao,

Chen

et al. 2024

Construction and Building Materials

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Influence of flocculation structure on time-dependent fluidity and rheological property of cement paste: Analytical models based on fractal theory

Chen,

Zhao,

Chen

et al. 2024

Construction and Building Materials

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Flocculation-filtration method for harvesting Euglena sp.

Firmansyah,

Sadewo,

Dewayanto

et al. 2024

BIO Web Conf.

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Euglena sp. is a type of microalgae that can produce various biomolecules including proteins, vitamins, carbohydrates, and can also be the best source of biomass because it contains lipids, which are especially useful for extracting and converting it into biodiesel. Unfortunately, harvesting Euglena sp. biomass is a challenge. Most of the production costs are occur in the harvesting process. The primary concerns revolve around efficiency levels and the operational costs. The methodology used in this study is by combining the flocculation method using Poly Aluminium Chloride (PAC) with the filtration method to answer the existing challenges. The purpose of this study is to provide scientific information related to efficient and effective methods for harvesting Euglena sp. The parameters measured in this study are Cell Density and dry weight of biomass. This study showed that by using the flocculation method first before the filtration method, through optimal settling time treatment, even by using cheap filtration materials.This study indicated that the flocculation method with optimal settling time treatment as a pretreatment before the filtration method is an efficient and effective method for harvesting Euglena sp.

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Optimization Model for Mine Backfill Scheduling Under Multi-Resource Constraints

Liu,

Li,

Hou

et al. 2024

Minerals

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Addressing the resource constraints, such as manpower and equipment, faced by mine backfilling operations, this study proposed an optimization model for backfill scheduling based on the Resource-Constrained Project Scheduling Problem (RCPSP). The model considered backfilling’s multi-process, multi-task, and multi-resource characteristics, aiming to minimize total delay time. Constraints included operational limits, resource requirements, and availability. The goal was to determine optimal resource configurations for each stope’s backfilling steps. A heuristic genetic algorithm (GA) was employed for solution. To handle equipment unavailability, a new encoding/decoding algorithm ensured resource availability and continuous operations. Case verification using real mine data highlights the advantages of the model, showing a 20.6% decrease in completion time, an 8 percentage point improvement in resource utilization, and a 47.4% reduction in overall backfilling delay time compared to traditional methods. This work provides a reference for backfilling scheduling in similar mines and promotes intelligent mining practices.

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Flocculation behavior, mechanics, and optimization of tailings based on multi-objective: Insight into the concentration and time-dependent floc size

Cited by 3 publications

References 42 publications

Influence of flocculation structure on time-dependent fluidity and rheological property of cement paste: Analytical models based on fractal theory

Influence of flocculation structure on time-dependent fluidity and rheological property of cement paste: Analytical models based on fractal theory

Flocculation-filtration method for harvesting Euglena sp.

Optimization Model for Mine Backfill Scheduling Under Multi-Resource Constraints

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