Treatment of acidic mine drainage in an adsorption process using calcium silicate modified with Fe(III)

Barrera, Kamila; Briso, Alejandro; Ide, Viviana; Martorana, Leonardo; Montes, Gonzalo; Basualto, Carlos; Borrmann, Thomas; Valenzuela, Fernando

doi:10.1016/j.hydromet.2017.06.016

Cited by 23 publications

(5 citation statements)

References 20 publications

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“…Numerous studies have been conducted on the adsorption properties of silicates towards heavy metal ions, With an emphasis on quantifying adsorption performance through the analysis of various influencing factors such as time, initial concentration, pH, etc to explain the adsorption processes. Recently, Fe(III) modified calcium silicate hydrates have investigated their properties and application in removing As(V), Cu(II), Zn(II), and Cd(II) from acidic mine drainage [115]. With a pH range of 2-4, an equilibration time of 120 min, Fe(III)-calcium silicate hydrates (CSHs) achieved removal efficiencies of 99.94% for Cu(II), 99.98% for Cd(II), 99.99% for Zn(II), with the maximum arsenic loading capacity approaching 55 mg g −1 .…”

Section: Heavy Metalsmentioning

confidence: 99%

Recent advances of silicate materials for wastewater treatment: a review

Xu,

Wang,

2024

Mater. Res. Express

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Heavy metal ions and organic pollutants cause irreversible damage to water environment, thereby posing significant threats to the well-being of organisms. The techniques of adsorption and photocatalytic degradation offer versatile solutions for addressing water pollution challenges, attributed to their inherent sustainability and adaptability. Silicates exhibit exceptional practicality in the realm of environmental protection owing to their structural integrity and robust chemical/thermal stability during hybridization and application process. Furthermore, the abundance of silicate reserves, coupled with their proven effectiveness, has garnered significant attention in recent years. This detailed review compiles and analyzes the extensive body of literature spanning the past six years (2018-2023), emphasizing the pivotal discoveries associated with employing silicates as water purification materials. This review article provides a comprehensive overview of the structure, classification, and chemical composition of diverse silicates and offers a thorough descriptive analysis of their performance in eliminating pollutants. Additionally, the utilization of diatomite as either precursors or substrates for silicates, along with the exploration of their corresponding purification mechanisms is discussed. The review unequivocally verifies the efficiency of silicates and their composites in the effective elimination of various toxic pollutants. However, the development of novel silicates capable of adapting to diverse environmental conditions to enhance pollution control, remains an urgent necessity.

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Section: Heavy Metalsmentioning

confidence: 99%

Recent advances of silicate materials for wastewater treatment: a review

Xu,

Wang,

2024

Mater. Res. Express

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“…It was noted that the presence of iron in the nanosorbent had a major role in the removal of As through formation of water insoluble and stable double iron and calcium arsenate salts (Briso et al 2018). In another study, Barrera et al (2017) reported nanostructured calcium silicate hydrate, unmodified or modified with Fe (III), for removal of heavy metals such as Cd (II), Cu (II) and Zn (II) from acidic aqueous solutions. Some of the studied magnetic nanosorbents are shown in Table 3.…”

Section: Magnetic Sorbentsmentioning

confidence: 99%

Recent developments in materials used for the removal of metal ions from acid mine drainage

Mokgehle

Tavengwa

2021

Appl Water Sci

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Acid mine drainage is the reaction of surface water with sub-surface water located on sulfur bearing rocks, resulting in sulfuric acid. These highly acidic conditions result in leaching of non-biodegradeable heavy metals from rock which then accumulate in flora, posing a significant environmental hazard. Hence, reliable, cost effective remediation techniques are continuously sought after by researchers. A range of materials were examined as adsorbents in the extraction of heavy metal ions from acid mine drainage (AMD). However, these materials generally have moderate to poor adsorption capacities. To address this problem, researchers have recently turned to nano-sized materials to enhance the surface area of the adsorbent when in contact with the heavy metal solution. Lately, there have been developments in studying the surface chemistry of nano-engineered materials during adsorption, which involved alterations in the physical and chemical make-up of nanomaterials. The resultant surface engineered nanomaterials have been proven to show rapid adsorption rates and remarkable adsorption capacities for removal of a wide range of heavy metal contaminants in AMD compared to the unmodified nanomaterials. A brief overview of zeolites as adsorbents and the developent of nanosorbents to modernly applied magnetic sorbents and ion imprinted polymers will be discussed. This work provides researchers with thorough insight into the adsorption mechanism and performance of nanosorbents, and finds common ground between the past, present and future of these versatile materials.

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“…As (V) can be easily eliminated by adsorption technology using adsorbents, but it is difficult to remove As (III) by adsorption processes, and therefore, As (III) requires oxidation before adsorption (Liu et al, 2019, Mohan and Pittman, 2007, Otgonjargal et al, 2012, Suvokhiaw et al, 2016. There are many methods of removing As (V); among them, the adsorption method is regarded as high efficiency, relatively costeffective technology, and minimum generation of toxic sludge for water treatment (Barrera et al, 2017, Liu et al, 2019, Núñez-Gómez et al, 2019, Otgonjargal et al, 2012, Suvokhiaw et al, 2016, Zhou et al, 2018. Various adsorbents have been developed in previous studies, such as clay minerals, activated alumina, activated carbon, and ion exchange resin.…”

Section: Introductionmentioning

confidence: 99%

Application of Mn-Fe Layered Double Hydroxide as an Adsorbent for the Removal of Arsenic from Synthetic Acid Mine Drainage

Irawan

Sari

Yulianingtias

et al. 2021

J. Rekayasa Kim. Lingkung.

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The Mn-Fe layered double hydroxide using chloride in the interlayer anion was successfully synthesized using chemical co-precipitation methods. The Mn-Fe LDH was then applied as adsorbent for arsenic removal from synthetic acid mine drainage. The adsorbent characterizations of SEM and XRD analysis showed that the Mn-Fe LDH had many different functional groups and a high specific surface area for the adsorption processes. The morphological structure of Mn-Fe LDH by the SEM-EDS analysis method shows a round shape structure with a particle size of about 1 μm, and the XRF analysis method shows that the Mn and Fe elements dominate more than other components. Batch adsorption experimental conducted using the Mn-Fe LDH with the interlayer anion of chloride as an adsorbent to study the effect of contact time, equilibrium pH, and temperature on the arsenic removal. The Mn-Fe LDH showed high adsorption uptake capacity and selectivity for the arsenic in the synthetic acid mine drainage. The adsorption and ion exchange between interlayer chloride anions in Mn-Fe LDH and As (V) solution was the main adsorption mechanism. Therefore, the Mn-Fe LDH can be used as an adsorbent in water and wastewater treatment. In contrast, this research has the potential to be processed and developed into advanced materials.

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Treatment of acidic mine drainage in an adsorption process using calcium silicate modified with Fe(III)

Cited by 23 publications

References 20 publications

Recent advances of silicate materials for wastewater treatment: a review

Recent advances of silicate materials for wastewater treatment: a review

Recent developments in materials used for the removal of metal ions from acid mine drainage

Application of Mn-Fe Layered Double Hydroxide as an Adsorbent for the Removal of Arsenic from Synthetic Acid Mine Drainage

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