Titania-Coated Silica Alone and Modified by Sodium Alginate as Sorbents for Heavy Metal Ions

Kołodyńska, Dorota; Gęca, M.; Skwarek, Ewa; Goncharuk, E.V.

doi:10.1186/s11671-018-2512-7

Cited by 32 publications

(7 citation statements)

References 38 publications

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“…The Elovich exponential model describes The kinetics of heterogeneous chemisorption on solid surfaces [27]. The Elovich equation simplified by Chien and Clayton can be written as follows [46]:…”

Section: Kinetic Modelsmentioning

confidence: 99%

Comparison of The Sorption Kinetics of Lead(II) and Zinc(II) on Titanium Phosphate Ion-Exchanger

Маслова

Иваненко

Yanicheva

et al. 2020

IJMS

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The treatment of heavy metal-contaminated wastewater is an important action to reduce The negative impacts of industrial wastes on water bodies. This work focuses on The application of a low-cost titanium (IV) phosphate sorbent of TiO(OH)H2PO42H2O chemical composition toward lead and zinc ions depending on their concentration and The temperature of The solution. The kinetic studies showed that The values of The rate of intraparticle diffusion and The effective diffusion coefficients for Zn2+ were considerably higher than those for Pb2+. To explain The difference between The sorption kinetics rates for Pb2+ and Zn2+, The effective radius and dehydration degree of The adsorbed ions were calculated. The sorbent capability of The lead and zinc ion removal and its excellent efficiency in The presence of a high concentration of calcium ions were demonstrated using simulated mine water. Due to The fast kinetics and The high exchange capacity of titanium phosphate toward divalent ions, this sorbent can be considered as a promising material for The concentration and immobilization of heavy metals into The phosphate matrix.

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Section: Kinetic Modelsmentioning

confidence: 99%

Comparison of The Sorption Kinetics of Lead(II) and Zinc(II) on Titanium Phosphate Ion-Exchanger

Маслова

Иваненко

Yanicheva

et al. 2020

IJMS

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“…Alginates are copolymers consisting of β-D-mannuronic (M blocks) and α-Lguluronic acid (G blocks) residues linked together by glycosidic bonds. Among biopolymers, they are considered to be a good sorbent for heavy metals from low concentrated aqueous solutions [40][41][42][43][44][45]. In Poland, the process of biosorption of three bivalent metal ions -nickel, lead, and zinc by calcium alginate from an aqueous solution in one-component systems was investigated.…”

Section: Alginatesmentioning

confidence: 99%

Removal of Heavy Metals from Aqueous Solutions with the Use of Lignins and Biomass

Miros-Kudra

Sobczak

Kopania

2022

Fibres &Amp; Textiles in Eastern Europe

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The overproduction of pollutants resulting from the development of industry causes the deposition of large amounts of toxic and carcinogenic substances, including heavy metals, in the aquatic ecosystem and other ecosystems. This is a civilisation problem of the present times, posing a serious threat to the natural environment, including humans. For this reason, it has recently become extremely important to develop effective methods to minimise the concentration of heavy metal ions in the aquatic systems and thus reduce their negative impact on the environment. One such technique is adsorption, which is believed to be an effective method of removing contaminants such as heavy metal ions from aqueous solutions. Looking at the available literature of the last few years, it can be concluded that adsorbents of natural origin are becoming more and more important. These are agricultural waste, all kinds of biomass, and waste from various industries. The study attempts to present and evaluate the sorption capacity of materials of natural origin, including oat bran, chitosan, alginate, tree bark, coconut fibre, and lignin. The use of such biosorbents is more friendly for the environment compared to their synthetic counterparts and perfectly fits the concept of sustainable development and the circular economy.

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“…Future studies should be channeled towards optimization of the operation parameters, assessment of toxicity and environmental impact of the treated soil and washing effluents, as well as scale-up and field implementation of the combine process. Several other complementary techniques or materials are emerging that can provide improvements in the efficacy of integrated technologies (e.g., nanomaterials [ 132 ] and absorbents [ 133 ]).…”

Section: Future Perspective and Concluding Remarksmentioning

confidence: 99%

Coupling of Anodic Oxidation and Soil Remediation Processes: A Review

et al. 2020

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In recent years, due to industrial modernization and agricultural mechanization, several environmental consequences have been observed, which make sustainable development difficult. Soil, as an important component of ecosystem and a key resource for the survival of human and animals, has been under constant contamination from different human activities. Contaminated soils and sites require remediation not only because of the hazardous threat it possess to the environment but also due to the shortage of fresh land for both agriculture and urbanization. Combined or coupled remediation technologies are one of the efficient processes for the treatment of contaminated soils. In these technologies, two or more soil remediation techniques are applied simultaneously or sequentially, in which one technique complements the other, making the treatment very efficient. Coupling anodic oxidation (AO) and soil remediation for the treatment of soil contaminated with organics has been studied via two configurations: (i) soil remediation, ex situ AO, where AO is used as a post-treatment stage for the treatment of effluents from soil remediation process and (ii) soil remediation, in situ AO, where both processes are applied simultaneously. The former is the most widely investigated configuration of the combined processes, while the latter is less common due to the greater diffusion dependency of AO as an electrode process. In this review, the concept of soil washing (SW)/soil flushing (SF) and electrokinetic as soil remediation techniques are briefly explained followed by a discussion of different configurations of combined AO and soil remediation.

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Titania-Coated Silica Alone and Modified by Sodium Alginate as Sorbents for Heavy Metal Ions

Cited by 32 publications

References 38 publications

Comparison of The Sorption Kinetics of Lead(II) and Zinc(II) on Titanium Phosphate Ion-Exchanger

Comparison of The Sorption Kinetics of Lead(II) and Zinc(II) on Titanium Phosphate Ion-Exchanger

Removal of Heavy Metals from Aqueous Solutions with the Use of Lignins and Biomass

Coupling of Anodic Oxidation and Soil Remediation Processes: A Review

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