Adsorption isotherms of lanthanum to soil constituents and effects of pH, EDTA and fulvic acid on adsorption of lanthanum onto goethite and humic acid

Zhenghua, W.; Luo, Jun; Guo, Hongyan; Wang, Xiaorong; Yang, Chunsheng

doi:10.3184/095422901782775444

Cited by 41 publications

(8 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Synthetic goethite was prepared following literature method (13,14). 100.0g of analytical grade of Fe(NO 3 ) 3 .9H 2 O was dissolved in 1L of de-ionised water in a 2L plastic container, which was previously sterilized.…”

Section: Goethite Preparationmentioning

confidence: 99%

The influence of ph and adsorbent concentration on adsorption of lead and zinc on a natural goethite

Salam¹,

Adekola²

2010

African Journal of Science and Technology

View full text Add to dashboard Cite

show abstract

Section: Goethite Preparationmentioning

confidence: 99%

The influence of ph and adsorbent concentration on adsorption of lead and zinc on a natural goethite

Salam¹,

Adekola²

2010

African Journal of Science and Technology

View full text Add to dashboard Cite

show abstract

“…Identification of humic acid with Infrared spectroscopy, there were about 40 peak in the Infrared spectra of extraced humic acid. Figure 2 shows that lots of in hydroxyl and carboxylic groups exist in humic acid, according to (Zhenghua et al, 2001) that were responsible for behavior adsorption. Strong absorption at 3,425 cm -1 show the O-H and N-H stretch, strong absorption at 2,924 cm -1 of C-H stretch and 2855 cm -1 of aliphatic C-H stretch, strong absorption at 1651 cm -1 of C=O stretch (amide I).…”

Section: Resultsmentioning

confidence: 99%

Effect of Humic Acid and Molybdate on Phosphate Adsorption in Typic Hapludult of Cigudeg, Bogor

Wibowo

Purwanto

Notohadisuwarno

2018

ipas

View full text Add to dashboard Cite

Humic acids containing carboxyl and hydroxyl groups that have the ability to cover the P adsorption site in Typic Hapludults. Molybdate has similarity behaviour with phosphate in theacid soils. Research aim was to study the effects of molybdate and humic acid to the kinetics of phosphate adsorption in Typic Hapludults of Cigudeg, Bogor. Important of kinetics is to get accuration of materials transport, to control influence on anion mobility, that the assessment is needed for the efficient application of Mo and P. Aplication humic acid and molybdate as competitor anion of phosphate was conducted with combination of humic acid and Mo concentration as double anions. Many models describe the kinetics for the adsorption of phosphate by soils i.e. zero order, first order, second order, and Elovich. As ststistically, there was not interaction of humic acid and molybdate on P adsorption. Application of humic acid with rate of 100 mg.L-1 was not effective decrease P adsorption in Typic Hapludults. It was due to the pH of the adsorption system that get near to its pKa of carboxyl gruop about 5. Meanwhile aplication 2 and 5 mmol.L-1 of molybdate significantly decrease of P adsorption. The second order kinetics models apropriate to the adsorptionof P in the Typic Hapludults of Cigudeg, with determination coefficients value (R2) of 0.999-1 and standard error value (SE) of 0.001–0.011.The results suggest that the molybdate as competitor anion affected the kinetics for the adsorption of phosphate due to the charge of molybdate.

show abstract

“…The mobility of REE in soils is a function of their ionic radii and speciation in solution, pH, Eh, water fluxes, and the nature of secondary intermediate minerals formed under different conditions [5,95]. Sorption on clay minerals [149][150][151][152], phosphates [17,104,153], Fe-/Mn-hydroxides [11,18,[154][155][156], Al hydroxides [156], and soil organic matter (SOM) [72,104,136,154,157,158] decrease the solubility and mobility of REE in soils. Conversely, the presence of inorganic and organic ligands such as sulfate, carbonates, fluorides [9,159], carboxylates [14,73,77,160,161], humic and fulvic acids [136,158,162] can counteract sorption and foster their presence in the soil solution.…”

Section: Mobility and Speciation In Soilmentioning

confidence: 99%

Rare Earth Elements (REE): Origins, Dispersion, and Environmental Implications—A Comprehensive Review

Sager,

Wiche

2024

Environments

View full text Add to dashboard Cite

The rare earth elements (REE) comprise a group of 16 chemically very similar elements that occur widespread in rocks, soils, and water bodies, share similar ionic radii to the essential element Ca2+, and consequently also occur in biota. Given that REE form mainly trivalent cations, they also share similarities to Al3+. Compared to their chemical cognate Ca, they have a higher reactivity. Thus, their accumulation in soils may constitute a severe environmental threat. Over the last decades, the increasing use of REE in modern technology and fertilizers raised concerns about the pollution of soils and water bodies, which led to a rapidly increasing number of publications dealing with REE toxicity to plants, animals and humans, the fate of REE in soil–plant systems, REE cycling in ecosystems and impacts of REE pollution on food security. This review aims to give an overview of the current knowledge on the occurrence of REE in the total environment, including relevant environmental processes governing their mobility, chemical speciation and transfer from abiotic compartments into biota. Beginning with an overview of analytical approaches, we summarize the current knowledge on the ecology of REE in the lithosphere, pedosphere, hydrosphere and biosphere, including impacts of soil pollution on food security and public health.

show abstract

Adsorption isotherms of lanthanum to soil constituents and effects of pH, EDTA and fulvic acid on adsorption of lanthanum onto goethite and humic acid

Cited by 41 publications

References 14 publications

The influence of ph and adsorbent concentration on adsorption of lead and zinc on a natural goethite

The influence of ph and adsorbent concentration on adsorption of lead and zinc on a natural goethite

Effect of Humic Acid and Molybdate on Phosphate Adsorption in Typic Hapludult of Cigudeg, Bogor

Rare Earth Elements (REE): Origins, Dispersion, and Environmental Implications—A Comprehensive Review

Contact Info

Product

Resources

About