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Bellaloui, Achour; Chtaini, Abdessadek; Ballivy, G.; Narasiah, Subba

doi:10.1023/a:1005017912012

Cited by 40 publications

(8 citation statements)

References 6 publications

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“…Experimental tests are useful to prove and verify theories [16]- [18]. Experiments were conducted to clarify the mechanism of dumping pile formation.…”

Section: Methodsmentioning

confidence: 99%

Study on Formation Mechanism of Dumping Piles on Dumping Area Stability

Zhang¹,

Inoue²,

Sasaoka³

et al. 2014

OJG

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Dumping areas represent a stable hazard. To clarify the formation mechanism of dumping piles on dumping area stability, an investigation in open pit mine was performed. Moreover, experiments with gravel were conducted based on the research site conditions. The geological conditions, dumping operation, and waste particle size distribution were investigated in the Heidaigou open pit mine. Particle size distribution, dumping height, dumping volume, and floor inclination were varied to examine their effects on a single pile formation. The design of blasting can be modified to make the particle size of waste smaller. The volume of the bucket does not have a pronounced effect on dumping pile repose angle, capacity of dumping pile, and dumping area stability. The smaller the floor inclination, the better it is. Two measures are proposed to increase the kinetic force of friction between waste material and floor surface. The interval distance, dumping volume and dumping height were also varied to examine the interaction between the formations of multiple piles. The dumping width should be decided through optimization efficiency of bulldozer and dumping device in bucket wheel excavator-belt-stacker dumping operation and dragline dumping operation. Moreover, the volume of the bucket does not have a pronounced interaction effect. In the dumping operation, the work amount of bulldozer decreases as dumping pile increases. The design of the dumping operation must consider the total efficiency of ground leveling operation and forming dumping the area.

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“…Experimental tests are useful to prove and verify theories [16]- [18]. Experiments were conducted to clarify the mechanism of dumping pile formation.…”

Section: Methodsmentioning

confidence: 99%

Study on Formation Mechanism of Dumping Piles on Dumping Area Stability

Zhang¹,

Inoue²,

Sasaoka³

et al. 2014

OJG

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“…The presence of a great amount of water in the material, even after the de-watering process, has a strong influence on the permeability and compressibility as reported in the following paragraphs. The good sorbent and pH neutralising capacity of the primary sludge from the paper mill [1,3] is mostly due to the high calcium carbonates (>40%) content. The value of specific density of 2.260 g/cm 3 was obtained with a standard deviation of 1 × 10 −4 .…”

Section: Physical and Chemical Characteristicsmentioning

confidence: 99%

“…1.476 Specific density, γ s (g/cm 3 ) 2.260 Water content, w i (%) 88.29 CaCO 3 content (%) 40.5 Table 2 Results from the leaching test performed according to the procedure prescribed by the Italian regulation on solid waste [4] Regulatory limit (mg/l) Average concentration (mg/l) …”

Section: Physical and Chemical Characteristicsmentioning

confidence: 99%

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Environmental quality of primary paper sludge

Boni

D'Aprile

Casa

2004

Journal of Hazardous Materials

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“…Lime mud is used in many applications, such as building materials (bricks and cements) [10], wastewater treatment [11], and agricultural soils [12]. However, high costs involved in pretreatment processes such as drying, desalting, or dewatering makes lime mud a secondary option.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Lime Mud Waste from Paper Mills for Efficient Phosphorus Removal

Khan

Ramakrishna

et al. 2019

Sustainability

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In this study, we utilized lime mud waste from paper mills to synthesize calcium hydroxide (Ca(OH)2) nanoparticles (NPs) and investigate their application for the removal of phosphorus from aqueous solution. The NPs, composed of green portlandite with hexagonal shape, were successfully produced using a precipitation method at moderately high temperature. The crystal structure and characterization of the prepared Ca(OH)2 nanoparticles were analyzed by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. The effects of Ca(OH)2 NP dosage and contact time on removal of phosphorus were also investigated. The results show that the green portlandite NPs can effectively remove phosphorus from aqueous solution. The phosphorus removal efficiencies within 10 min are 53%, 72%, 78%, 98%, and 100% with the different mass ratios of Ca(OH)2 NPs/phosphorus (CNPs/P) of 2.2, 3.5, 4.4, 5.3, and 6.2, respectively. Due to the efficient phosphorus removal, the calcium hydroxide nanoparticles (CNPs) could be a potential candidate for this application in domestic or industrial wastewater treatment.

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Untitled

Cited by 40 publications

References 6 publications

Study on Formation Mechanism of Dumping Piles on Dumping Area Stability

Study on Formation Mechanism of Dumping Piles on Dumping Area Stability

Environmental quality of primary paper sludge

Utilization of Lime Mud Waste from Paper Mills for Efficient Phosphorus Removal

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