Biochar nanoparticles with different pyrolysis temperatures mediate cadmium transport in water-saturated soils: Effects of ionic strength and humic acid

2022 ◽  
Vol 806 ◽  
pp. 150668
Author(s):  
Ming Chen ◽  
Dengjun Wang ◽  
Xiaoyun Xu ◽  
Yue Zhang ◽  
Xiangyang Gui ◽  
...  
Keyword(s):  
Humic Acid ◽  
Ionic Strength ◽  
Saturated Soils ◽  
Cadmium Transport ◽  
Water Saturated

scholarly journals Influence of Humic Acid on the Transport of Two Types of Synthesized Zinc Oxide Nanoparticles in Quartz Sand

2021 ◽  
Vol 11 (19) ◽  
pp. 8957
Author(s):  
Donghyun Kim ◽  
Gukhwa Hwang
Keyword(s):  
Humic Acid ◽  
Ionic Strength ◽  
Zinc Oxide Nanoparticles ◽  
Bulk Solution ◽  
Oxide Nanoparticles ◽  
Sand Surface ◽  
Significant Difference ◽  
Manufacturing Methods ◽  
The Difference ◽  
Water Saturated

In this study, transport and retention behaviors of the two types of nZnO prepared with separate manufacturing methods were compared/analyzed according to the presence/absence of Suwannee River humic acid (SRHA) adsorbed into the sand surface and the SRHA suspended in bulk solution, and to changes in the solution ionic strength (0.1–10 mM) in sand-repacked water-saturated columns. In the absence of suspended SRHA, nZnO-1 breakthrough was observed only in SRHA-coated soil, and the breakthrough amount decreased with the increase in the ionic strength (23.8% to 17.2% at 0.1 mM to 10 mM, respectively). In contrast, nZnO-2 breakthrough was not observed over the entire ionic strength range, regardless of the SRHA sand coating. With the presence of suspended SRHA, neither nZnO-1 nor nZnO-2 showed a significant difference in the breakthrough amount regardless of sand coating or ionic strength. However, the breakthrough amount of nZnO-1 was higher than that of nZnO-2 (51.5% versus 37.7% at 10 mM with 1 mg/L SRHA). From confirming the difference in transport between the two types of nZnO, the amount of SRHA adsorbed into nZnO-1 was less than the amount adsorbed into nZnO-2 (0.29 mg/g versus 0.64 mg/g at 10 mM with 1 mg/L SRHA). This result was considered to be due to the larger nZnO-1 breakthrough amount than the nZnO-2 breakthrough amount, which was caused by the larger amount of suspended SRHA that could occupy the deposition sites in the nZnO-1 suspension. Because the rate of SRHA deposition on the sand surface was higher than on nZnO, nZnO transport improved in the presence of suspended SRHA, and changed according to the amount of suspended SRHA.

Diffusion Behavior of Humic Acid in Compacted Bentonite: Effect of Ionic Strength, Dry Density and Molecular Weight of Humic Acid

2008 ◽  
Author(s):  
Kazuki Iijima ◽  
Seiichi Kurosawa ◽  
Minoru Tobita ◽  
Satoshi Kibe ◽  
Yuji Ohuchi
Keyword(s):  
Molecular Weight ◽  
Humic Acid ◽  
Ionic Strength ◽  
Dry Density ◽  
Diffusion Behavior ◽  
Compacted Bentonite

Corrigendum to: Effect of humic acid, fulvic acid, pH, ionic strength and temperature on 63Ni(II) sorption to MnO2

2020 ◽  
Vol 108 (7) ◽  
pp. 591
Author(s):  
Guodong Sheng ◽  
Jun Hu ◽  
Han Jing ◽  
Shitong Yang ◽  
Xuemei Ren ◽  
...  
Keyword(s):  
Humic Acid ◽  
Ionic Strength ◽  
Fulvic Acid ◽  
Acid Ph

Modeling Competitive Cation Exchange of Aromatic Amines in Water-Saturated Soils

2001 ◽  
Vol 35 (13) ◽  
pp. 2727-2733 ◽  
Author(s):  
José R. Fábrega ◽  
Chad T. Jafvert ◽  
Hui Li ◽  
Linda S. Lee
Keyword(s):  
Cation Exchange ◽  
Aromatic Amines ◽  
Saturated Soils ◽  
Water Saturated

scholarly journals EXPERIENCE OF TRANSFORMATION OF WEAK WATER-SATURATED SOILS USING PILES OF FINITE STIFFNESS

Vestnik MGSU ◽  
2018 ◽  
pp. 271-281
Author(s):  
V. V. Sidorov ◽  
Z. G. Ter-Martirosyan ◽  
A. Z. Ter-Martirosyan
Keyword(s):  
Saturated Soils ◽  
Water Saturated

Effect of humic acid on the sedimentation and transport of nanoparticles silica in water-saturated porous media

2019 ◽  
Vol 20 (2) ◽  
pp. 911-920 ◽  
Author(s):  
Mo Zhang ◽  
Duo Li ◽  
Zhi Ye ◽  
Shiqi Wang ◽  
Nan Xu ◽  
...  
Keyword(s):  
Porous Media ◽  
Humic Acid ◽  
Saturated Porous Media ◽  
Water Saturated
Sign in / Sign up

Export Citation Format

Share Document