HybridICE® filter: ice separation in freeze desalination of mine waste waters

Adeniyi, Amos; Maree, J. P.; Mbaya, Richard; Popoola, A. P. I.; Mtombeni, T.; Zvinowanda, Caliphs

doi:10.2166/wst.2014.078

Cited by 9 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At this temperature, the tendency for concentrated wastewater inclusion in the ice was high, but ice formation was also favourable. Refrigerant evaporating temperature affects the slurry quality and hence the yield and salt removal in the filter (Adeniyi et al, 2013a). Preliminary testing of the gravitation filter gave a mean of 90% salt removal from a solution of electrical conductivity of 63.5 mS/cm.…”

Section: Results and Discussion Salt Removalmentioning

confidence: 99%

“…The gravitation HybridICE filter used for the experiment was constructed for a flow rate of 10 ℓ/min based on the design equations developed by Adeniyi et al (2013a).…”

Section: Gravitation Hybridice Filtermentioning

confidence: 99%

“…Higher throughputs result in lower residence times which affect the quality of recovered process water for a given process water concentration. (Adeniyi et al, 2013b) …”

Section: Separation Mechanismmentioning

confidence: 99%

See 2 more Smart Citations

Performance comparison of hydraulic and gravitation HybridICE filters in freeze desalination of mine waters

Adeniyi¹,

Mbaya²,

Popoola³

et al. 2015

WSA

View full text Add to dashboard Cite

HybridICE is an emerging freeze desalination technology for treating complex mine wastewaters. The technology works on the principle that growing ice crystals reject impurities during freezing. The bottleneck in the freeze desalination processes may be the separation of ice from the ice slurry generated in the freeze engine. Two types of HybridICE filter have been developed to effect ice separation from ice slurry. The two types differ in the design of the filter elements, mode of feeding the slurry into the filter, and the mechanism of separation of ice from the slurry. In both types of filter, an extruded continuous ice column is formed around the filtering element, which has some openings to allow excess concentrated process water to flow out of the filter. However, the driving force in the gravitation filter is buoyancy, while in the hydraulic filter the ice column is driven by the pressure generated from the flow of the slurry. Salt removal and ice yield from each of the filter types was evaluated when a solution of approximately 4% m/m NaCl solution, prepared by dissolving 25.1 kg of NaCl in 674 litres of water, was treated in a HybridICE freeze crystallisation pilot plant. The objective was to describe the operation of the two types of filter and compare their performance. Salt removal and ice yield were found to be higher with the gravitation filter than the hydraulic filter.

show abstract

Section: Results and Discussion Salt Removalmentioning

confidence: 99%

“…The gravitation HybridICE filter used for the experiment was constructed for a flow rate of 10 ℓ/min based on the design equations developed by Adeniyi et al (2013a).…”

Section: Gravitation Hybridice Filtermentioning

confidence: 99%

See 1 more Smart Citation

Performance comparison of hydraulic and gravitation HybridICE filters in freeze desalination of mine waters

Adeniyi¹,

Mbaya²,

Popoola³

et al. 2015

WSA

View full text Add to dashboard Cite

show abstract

“…The same applies to electrodialysis [Akhter et al, 2018]. Evaporation [Shata et al, 2014] and freezing [Adeniyi et al, 2014] of water are less dependent on the concentration of impurities. However, they are characterized by high energy consumption, especially the processes of water evaporation and drying of the obtained crystalline residues [Bennamoun et al, 2013].…”

Section: Introductionmentioning

confidence: 94%

Utilization of Sodium Chloride Solutions to Obtain Ferrous Chlorides

Shabliy¹,

Gomelya²,

Kryzhanovska³

et al. 2020

J. Ecol. Eng.

View full text Add to dashboard Cite

In this work, the processes of electrochemical processing of sodium chloride solutions with the production of iron (III) chloride and alkali in a three-chamber electrolyzer with MA-41 anion-exchange membrane and MK-40 cation-exchange membrane were investigated. The conditions for the removal of sodium chloride from water in a three-chamber electrolyzer using an iron anode were determined depending on the anode current density and the reaction of the medium in the anode region. The parameters of the process of concentrating iron chloride in the anode region were established at relatively low concentrations of sodium chloride solution. It was shown that during the electrolysis of a sodium chloride solution with a concentration of 370 mg-eq/dm 3 at a current of 0.2 A in a three-chamber electrolyzer with an iron anode, an iron chloride solution is formed in the anolyte at pH <4.9. The rate of concentration of NaOH to catholyte and FeCl 3 to anolyte increased along with the current density. It was found that in order to increase the concentration of iron (III) chloride in the anolyte at relatively low concentrations of sodium chloride solution, it is advisable to gradually renew the demineralized solutions in the working chamber.

show abstract

“…The principle and the operation of the filter was published in Water Resources Management VII, 149 while the design of the filter was presented and published at the International Mine Water Association Conference in Colorado, United States of America (USA) in 2013. 150 Further work on the filter and technology was published in Water SA 151 and Environmental Chemistry Letters. 152 In line with this, South Africa is investing in home-grown technologies to make clean water available to all.…”

Section: South Africa's Water-renewable Technologymentioning

confidence: 99%

Women’s access to water for sustainable development in Nigeria: Drawing lessons from South Africa’s water-renewable techniques

Adeniyi

2020

JJS

View full text Add to dashboard Cite

Water is an indispensable natural resource, which, apart from its importance in the industrial sector, is mostly used by women at the domestic level everywhere, particularly in Africa. While industrialisation has made quality potable water accessible to women in cities and urban areas, this is unfortunately not the case in rural areas and thus poses a major challenge to the realisation of the United Nations (UN) Sustainable Development Goals in Nigeria. In cities and urban areas, people have managed to establish reliable water sources through boreholes, for example, while rural dwellers are still dependent on government intervention, philanthropies and non-governmental organisations to be able to have access to water of adequate quality. Considering the geographic location of South Africa, its peculiar water problem could be expected to be worse than in Nigeria. On the contrary, the South African government's involvement in water-renewable techniques and other strategies in making quality water available to all its citizens differs from the situation in Nigeria. This article illustrates that the right to water as a natural resource, to which citizens are entitled as a component of the right to development, is anchored in law. To ensure the realisation of this right, we draw inspiration from academic and industrial approaches and water-renewable techniques for development, improvement, and implementation in South Africa to suggest ways for Nigeria to improve on its water strategy.

show abstract

HybridICE® filter: ice separation in freeze desalination of mine waste waters

Cited by 9 publications

References 0 publications

Performance comparison of hydraulic and gravitation HybridICE filters in freeze desalination of mine waters

Performance comparison of hydraulic and gravitation HybridICE filters in freeze desalination of mine waters

Utilization of Sodium Chloride Solutions to Obtain Ferrous Chlorides

Women’s access to water for sustainable development in Nigeria: Drawing lessons from South Africa’s water-renewable techniques

Contact Info

Product

Resources

About