Sorption of Pb (II) onto &lt;1 μm effective diameter clay minerals extracted from different soils of the Loess Plateau, China

Yin, Xianqiang; Yu, Lin; Luo, Xiuhua; Zhang, Zhe; Sun, Huimin; Mosa, Ahmed; Wang, Nong

doi:10.1016/j.geoderma.2018.11.027

Cited by 22 publications

(8 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In most cases, loess particles are separated by size before modification. Generally, loess particles within a specific size range are separated by the sedimentation method (Fan et al 2017) or the suspension method (Yin et al 2019). LoPs can be separated into three types and clay is the main component in SLoPs (~0.01-10 μm).…”

Section: Separation and Purification Of Loess Particlesmentioning

confidence: 99%

“…356.9 mg g -1 Chelation of -COOH groups (He et al 2012) EDCM According to the standard method (ISO 11464, 2006) and Stokes' Law, EDCM (< 1 μm) were separated from agricultural soils in a Chinese loess plateau, including "manual loessial", dark loessial, cultivated loessial, and eolian sandy. CL (588.24 mg g −1 ) > DL (476.19 mg g −1 ) > ML (416.67 mg g −1 ) > AS (263.16 mg g −1 ) Multiple mechanisms dominated by chemisorption (Yin et al 2019(Yin et al ) et al 2017 showed large adsorptivities for removing basic fuchsin in aqueous solution, with removal rates of 98.2 and 98.4%, respectively.…”

Section: Adsorption Of Organicsmentioning

confidence: 99%

See 1 more Smart Citation

Review: Progress with Functional Materials Based on Loess Particles

Shen

Yan

Wang

et al. 2021

Clays and clay miner.

View full text Add to dashboard Cite

Loess is a large-scale deposit which is easy to mine and widely distributed on the epipedon. The clay fraction of loess, also known as 'loessial clay', is a very important component of loess which affects its properties and performance. From a 'materials' perspective, the clay fraction of loess has been ignored. Recently, loess particles have attracted interest because of their potential applications. The focus in the current review is on the methods of modifying loess particles and their application as functional materials. The major components of loess particles are clays, calcite, and quartz, with the clays including kaolinite, illite, montmorillonite, and chlorite. Loess has a range of particle sizes, types, and dispersibilities. The particles agglomerate readily, mainly because cementation occurs readily in the clay fraction. Loess particles can be modified and their properties can be improved by compaction, separation, purification, acidification, calcination, surfactant modification, geopolymerization, and polymer modification. Loess-based functional materials have been used as sorbents, eco-friendly superabsorbents, soil and water conservation materials, humidity-regulating materials, and building materials. Separated and purified loess particles can adsorb metal ions and harmful elements directly. Surfactant-modified loess particles can remove organic compounds effectively. After modification with polymers, loess particles exhibit greater capacity for the removal of environmental pollutants such as harmful metal ions and dyes. As a superabsorbent, modified loess shows excellent thermal stability and swelling behavior. Calcined loess could be utilized as an energy-saving building material with good humidityregulating performance, and geological polymerization has further expanded the scope of applications of loess in architecture. In summary, loess-based functional materials, which are inexpensive and ecologically friendly, deserve more attention and further development. Keywords-Application . Clay . Functionalization . Loess-based materials . Loess particles CLASSIFICATION, DISTRIBUTION, COMPOSITION, AND PHYSICOCHEMICAL PROPERTIES OF LOESS Classification and Distribution Loess can be classified from various perspectives. Using the geological and geographical classification, loess has been divided into plateau, intermontane basin,

show abstract

Section: Separation and Purification Of Loess Particlesmentioning

confidence: 99%

Section: Adsorption Of Organicsmentioning

confidence: 99%

Review: Progress with Functional Materials Based on Loess Particles

Shen

Yan

Wang

et al. 2021

Clays and clay miner.

View full text Add to dashboard Cite

show abstract

“…Due to the vast urbanization and industrialization, the rapid discharge of potentially toxic elements into the ecosphere caused several deteriorative impacts on the terrestrial ecosystems (El-Ramady et al, 2015;Moghanm et al, 2020;Mosa et al, 2016;Yin et al, 2019). Additionally, the transport of these potentially toxic elements across soil profile possesses a potential ecological threat to the water aquifers.…”

Section: The Ameliorative Effect Of Humic Substances On Polluted Soilmentioning

confidence: 99%

Agro-environmental applications of humic substances: A critical review

2020

View full text Add to dashboard Cite

“…Modified biochar, which has expanded the application scenarios of biochar materials, is generally obtained from pristine biochar after simple treatments [ 9 , 13 ]. Among them, ball milling has been proven to be an environmentally friendly engineering method by applying the theory of mechanochemistry, which greatly reduced the particle size, increased the specific surface area, and exposed more active edge sites of biochar, thus improving its adsorption ability [ 14 , 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Systematic Research on the Transport of Ball-Milled Biochar in Saturated Porous Media: Effect of Humic Acid, Ionic Strength, and Cation Types

Cao

Qiao

et al. 2022

Nanomaterials

Self Cite

View full text Add to dashboard Cite

Ball-milled biochar (BMBC) is a typical engineering material that has promising application prospects in remediating contaminated soil and water. It is fundamental to rate the transport behaviors of BMBC in the underground environment before extensive use. In this study, the effects of the ubiquitous cations (Na+, Mg2+, and Al3+) and model organic matter (humic acid) on the transport of BMBC were investigated using laboratory column experiments. The results demonstrated the facilitated effect of HA on the transport of BMBC due to the negatively charged surface and steric effect under neutral conditions. HA and ionic strength manifested an antagonistic effect on the transport of BMBC, where the presence of one could weaken the effect from the other. We also found the charge reversal of the BMBC surface in the presence of Mg2+, thus enhancing the deposition of BMBC onto the medium surface. On the other hand, the charge reversal from Al3+-coupled acid conditions led to the restabilization and transport of BMBC in porous media. Therefore, the rational usage of BMBC is indispensable and more attention should be paid to the composition and change in underground water that might facilitate the transport of BMBC and thus lead to negative environmental implications.

show abstract

Sorption of Pb (II) onto <1 μm effective diameter clay minerals extracted from different soils of the Loess Plateau, China

Cited by 22 publications

References 59 publications

Review: Progress with Functional Materials Based on Loess Particles

Review: Progress with Functional Materials Based on Loess Particles

Agro-environmental applications of humic substances: A critical review

Systematic Research on the Transport of Ball-Milled Biochar in Saturated Porous Media: Effect of Humic Acid, Ionic Strength, and Cation Types

Contact Info

Product

Resources

About

Sorption of Pb (II) onto <1 μm effective diameter clay minerals extracted from different soils of the Loess Plateau, China

Cited by 22 publications

References 59 publications

Review: Progress with Functional Materials Based on Loess Particles

Review: Progress with Functional Materials Based on Loess Particles

Agro-environmental applications of humic substances: A critical review

Systematic Research on the Transport of Ball-Milled Biochar in Saturated Porous Media: Effect of Humic Acid, Ionic Strength, and Cation Types

Contact Info

Product

Resources

About

Sorption of Pb (II) onto <1 μm effective diameter clay minerals extracted from different soils of the Loess Plateau, China