Adsorption of Nickel Ions from Petroleum Wastewater onto Calcined Kaolin Clay: Isotherm, Kinetic and Thermodynamic Studies

Jock, Alexander Asanja; Okon, Anietie N.; Offor, Uchechukwu Herbert; Thomas, Festus; Agbanaje, Edmond Okwudilichukwu

doi:10.33927/hjic-2020-26

Cited by 3 publications

(3 citation statements)

References 10 publications

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“…After being sun dried, the finished cake was oven dried at 110°C to a constant weight. A 125 m mesh was used for sieving and grinding the dry clay [8]. An analysis of the textural, chemical, and mineralogical characteristics of the beneficiated clay was conducted.…”

Section: Materials and Methods 21 Sample Collectionmentioning

confidence: 99%

Application of Adsorption Thermodynamics and Column Studies for Pb2+, Cd2+ and Mn2+ Ions Removal in Multicomponents Model Solution Using Low-Cost Bentonite Clay Adsorbent

Jock

Oluwadayo

2023

AJERD

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The presence of heavy metal contaminants in wastewater effluents has become a great threat to living creatures and the environment. In this study, the application of thermodynamics and column studies for Pb2+, Cd2+ and Mn2+ metal ions removal in multicomponent aqueous solution using low-cost bentonite clay was investigated. Evaluation of enthalpy (∆Ho), entropy (∆So) and Gibbs free energy (∆Go) revealed that heavy metals adsorption was endothermic and spontaneous as temperature increased from 30 to 65 oC. The column performance was determined at 0.05m adsorbent bed depth, 0.023 and 0.04 mL/s flow rates. The influent concentration was 10 and 50 ppm while the breakthrough time was between 0.83 and 8 hr. The maximum uptake of metal ions was 2.2 mg/g for Pb(II), Mn(II) was 0.4 mg/g and 1.7 mg/g for Cd(II). The result showed the potential of bentonite clay as a candidate for toxic metal ions adsorption in wastewater.

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Section: Materials and Methods 21 Sample Collectionmentioning

confidence: 99%

Application of Adsorption Thermodynamics and Column Studies for Pb2+, Cd2+ and Mn2+ Ions Removal in Multicomponents Model Solution Using Low-Cost Bentonite Clay Adsorbent

Jock

Oluwadayo

2023

AJERD

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“…Gold cations were adsorbed according to a previously applied methodology [14] using the prepared sugarcane bagasse NPs in an Erlenmeyer flask. About 0.5 g of the adsorbent was mixed into a 20 mL sample of gold leachate containing Au 3+ .…”

Section: Adsorption Of Gold Cationsmentioning

confidence: 99%

Production of a Highly Concentrated Gold Solution from Aqua Regia Gold Leachate Using Sugarcane Bagasse Nanoparticles

Teniola,

Adeleke,

Ibitoye

et al. 2023

Hung. J. Ind. Chem.

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This study produced a highly concentrated gold solution using nanoparticles (NPs) synthesized from sugarcane bagasse as an adsorbent for gold(III) recovery from an aqua regia gold leached lean solution. A 100 kg sample of gold ore collected from a mining site in Iperindo was concentrated. Mineralogical characterization and a fire assay test of the ore were carried out. Atmospheric and agitation leaching were conducted using aqua regia. Sugarcane bagasse NPs were prepared and used to study the gold(III) adsorption kinetics. Gold-loaded sugarcane bagasse NPs were desorbed in a 4 M aqua regia solution. The results revealed that the ore has a low water retention capacity which renders it friable. A microscopic examination established the presence of gold particles and pyrite in the ore. Ore leaching was eminently favoured by agitation yielding a weight loss of 6.3 % when an acid concentration of 4 M was used, the temperature was 90 ºC and the leaching time was 30 minutes. Synthesized nanocellulose was able to adsorb gold(III) from the leachate optimally with the following process parameters: 14 mL/g of adsorbent, 106.2 minute-long contact time, a temperature of 56 ºC and an agitation rate of 45 rpm when the concentration of leachate was 84 mg/L. The adsorption efficiency of the sugarcane bagasse NPs is comparable with that of commercial activated carbon, namely 92 and 95 %, respectively. The study concluded that NPs synthesized from sugarcane bagasse could be effectively used when upgrading gold and in purification processes.

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“…The immobilization properties of cement as an embedding material can be enhanced by using different types of additives that have a higher sorption capacity, e.g. bentonite and zeolites [4]- [5]. Given the low hydraulic conductivity and high sorption capacity of cations, bentonite is a promising material with regard to disposing of radioactive waste.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Study of Cesium Immobilization in a Geopolymer Matrix

Kocsis,

Fehérvári,

Novák

et al. 2023

Hung. J. Ind. Chem.

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Geopolymers are modern synthetic materials that have many beneficial characteristics, e.g. excellent mechanical properties, fire- and heat-resistance, minimal shrinkage and can be molded into shape. Given their aforementioned characteristics, geopolymers could be applicable as conditioning materials, e.g. to handle hazardous waste and radioactive materials. However, their long-term applicability needs to be investigated.The aim of this study is to investigate the mobility of Cs-137 radionuclides in embedding materials. Different geopolymeric matrices - namely kaolinite, bentonite, zeolites and red mud - were tested. The leach test was performed according to the ASTM C1308-08(2017) standard and the activity concentration of Cs-137 isotopes was measured by gamma spectrometry using a high-purity germanium (HPGe) semiconductor detector. According to our preliminary results, the matrices that resulted in the most significant immobilization effect were those in which bentonite, cement, fly ash and 8M NaOH were used, releasing approximately 10% of the cesium.

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Adsorption of Nickel Ions from Petroleum Wastewater onto Calcined Kaolin Clay: Isotherm, Kinetic and Thermodynamic Studies

Cited by 3 publications

References 10 publications

Application of Adsorption Thermodynamics and Column Studies for Pb2+, Cd2+ and Mn2+ Ions Removal in Multicomponents Model Solution Using Low-Cost Bentonite Clay Adsorbent

Application of Adsorption Thermodynamics and Column Studies for Pb2+, Cd2+ and Mn2+ Ions Removal in Multicomponents Model Solution Using Low-Cost Bentonite Clay Adsorbent

Production of a Highly Concentrated Gold Solution from Aqua Regia Gold Leachate Using Sugarcane Bagasse Nanoparticles

Preliminary Study of Cesium Immobilization in a Geopolymer Matrix

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