Characterization of brines and evaporites of Lake Katwe, Uganda

Kasedde, Hillary; Kirabira, John Baptist; Bäbler, Matthäus U.; Tilliander, Anders; Jönsson, Stefan

doi:10.1016/j.jafrearsci.2013.12.004

Cited by 33 publications

(13 citation statements)

References 10 publications

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“…The results from the evaporation simulations in Figure 2 indicate that glaserite, thenardite, and halite are slightly over saturated in the original brine solution and hence have high saturation indices. This also explains the existence of the three minerals in the salts from the mineralogical analysis by XRD (Kasedde et al, 2014). The precipitation of these mineral salts is dominant during the concentration of the brine.…”

Section: Saturation State Of the Brinementioning

confidence: 59%

Phase Developments during Natural Evaporation Simulation of Lake Katwe Brine Based on Pitzer’s Model

Kirabira

Kasedde

Bäbler

et al. 2015

BJAST

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Lake Katwe is the largest of the eight saline crater lakes in the pleistocene Katwe-Kikorongo volcanic field situated in the western arm of the great East African Rift system in southwestern Uganda. The salt lake is hydro-chemically of a carbonate type with its brines representing an important source of mineral salts of high economic value. In the present work, the geochemical simulation of the crystallization route of the natural evaporation of the lake brine in ls was done. The precipitation sequence of the different mineral salts that crystallized step by step from the brine during natural evaporation at 30°C was obtained. The results show that the mineral salt precipitation sequence following the saturation data is: sulfates, chlorides, and carbonates. During the evaporative concentration process, the brines become enriched in Na + , K + , HCO3 -+ CO3 2-, and depleted in Cl -and SO4 2-with massive halite precipitation. The study provides the basis for the future comprehensive utilization of the natural brine resource in Lake Katwe.

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Section: Saturation State Of the Brinementioning

confidence: 59%

Phase Developments during Natural Evaporation Simulation of Lake Katwe Brine Based on Pitzer’s Model

Kirabira

Kasedde

Bäbler

et al. 2015

BJAST

Self Cite

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“…The physical treatment involved the adding the carbonate or oxalate to precipitate the magnesium, sulphate and calcium in order to form a salt crystal with high purity NaCl. (Kasedde et al 2014) reported that the nature, quality and quantity of salts are influenced by the chemical composition of the sea water as raw material to define appropriate processing.…”

Section: Strategies To Utilize Sea Water and Treat Waste By Product Fmentioning

confidence: 99%

Physicochemical Properties of Sea Water and Bittern in Indonesia: Quality Improvement and Potential Resources Utilization for Marine Environmental Sustainability

Apriani¹,

Wahyono²,

Masduqi³

2018

J. Ecol. Eng.

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The traditional salt production in Indonesia was investigated to report the preparation and processing of salt, determine the characteristics of sea water and bittern as well as explore the potential of bittern management with appropriate technology. Field study and comprehensive analysis were performed so as to better understand the salt making, providing valuable information for the proposal of targeted management strategies in salt quality improvement and wastewater recovery. The results show that Na + , Cland Ca 2+ in East Java Province seawater were found greater than the majority of values found in the literature. The highest concentrations of Na + , Cland Ca 2+ were measured in Camplong-Sampang District. The highest concentrations of Mg 2+ and trace metals were recorded in Panceng-Gresik District. The trace metals found in sea water and bittern need particular concern to be removed without disposing of sea water minerals. The potential number of bittern in Indonesia promoted the development of the bittern management for magnesium recovery and achieving marine environment sustainability. High purified material recovery can be achieved by using crystallization technology.

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“…Furthermore, saline lakes in the Gobi region have a high evaporation rate and an average annual rainfall of only ~ 194 mm. Global warming and human activities have caused average temperatures to increase 3 to 5°C in recent years, resulting in increased desertification in inland areas [6], which has decreased river flows and increased salinity in shallow lakes in the Gobi region. Our sampling area was a large compressional basin bounded by the Khangai mountain range to the east, Altai Mountains to the west, chloride method.…”

Section: Description Of Sampling Sites and Sampling Proceduresmentioning

confidence: 99%

Physico-Chemical Composition of Saline Lakes of the Gobi Desert Region, Western Mongolia

Bayanmunkh¹,

Sen-lin²,

Narangarvuu³

et al. 2017

J Earth Sci Clim Change

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Mongolian saline lakes have been rarely studied. In particular, physicochemical composition of small shallow lakes of the Gobi Desertregion in western Mongolia is simply unknown. Objectives were to characterize chemical composition and describe biogeochemical characteristics of saline lakes in the Gobi Desertregions and steppe mountains, with an emphasis on environmental parameters associated with heavy metal ions. Major physicochemical parameters were determined in 14 lakes (with varying degrees of salinity) located in western Mongolia and associations with geographic variation and distance were determined. Vertical profiles for temperature, specific conductance, and dissolved oxygen were characterized. Salinity and pH were measured with multiparameter submersible profilers. Heavy metal ions (i.e., As, Pb, and Cd) and microelements (i.e., K, Na, Zn, Cu, Ni, Cr, and Co) were analyzed with Inductively Coupled Plasma-Mass Spectrometry. Hydrogen sulfide, ammonia, nitrite, and nitrate were also determined by commercial kits for elemental analysis. Overall, 43 environmental parameters were determined from 31 water samples from various locations, representing distinct geographic features, including Gobi Desert, mountain range and steppe area. Several of these lakes had harmful concentrations of arsenate (< 0.34 mg/L). Heavy metal concentrations were correlated with selected physico-chemical variables of lake salinity and geographic specificity. We inferred that various environmental features, in addition to environmental pollution and mining activity, may be responsible for increased heavy metal concentrations in the Gobi Desert of the western Mongolia. The outcome of this study not only provided insights into lake chemistry, but should also be valuable for water resource management to mitigate potential poisoning and improve public health.

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Characterization of brines and evaporites of Lake Katwe, Uganda

Cited by 33 publications

References 10 publications

Phase Developments during Natural Evaporation Simulation of Lake Katwe Brine Based on Pitzer’s Model

Phase Developments during Natural Evaporation Simulation of Lake Katwe Brine Based on Pitzer’s Model

Physicochemical Properties of Sea Water and Bittern in Indonesia: Quality Improvement and Potential Resources Utilization for Marine Environmental Sustainability

Physico-Chemical Composition of Saline Lakes of the Gobi Desert Region, Western Mongolia

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