Influence of catechin on precipitation of aluminum hydroxide

Chen, Yue Ming; Wang, Ming Kuang; Huang, P. M.; Tsao, Tsung-Ming; Lin, Kuo-Chuan

doi:10.1016/j.geoderma.2009.06.017

Cited by 13 publications

(7 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tea plants also have many polyphenols56–58 and these phenolic substances complex with Al to promote the absorption of Al and transporting it to each part of the tea plant without affecting other functions 59, 60. Aluminium also influences the concentrations of catechins in tea plants.…”

Section: Discussionmentioning

confidence: 99%

Aluminium and nutrients induce changes in the profiles of phenolic substances in tea plants (Camellia sinensis CV TTES, No. 12 (TTE))

Chen

Tsao

Liu

et al. 2011

J. Sci. Food Agric.

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 99%

Aluminium and nutrients induce changes in the profiles of phenolic substances in tea plants (Camellia sinensis CV TTES, No. 12 (TTE))

Chen

Tsao

Liu

et al. 2011

J. Sci. Food Agric.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The curves showed three regions of mass loss. The first one, between 22 e 117 o C, with mass loss values around 14 %, is related to evaporation of physically adsorbed water on the solid 19,20 . For LS1000-1, the mass loss that can be better observed by DTG peaks in the range of 180-340 o C comes from the release of chemisorbed water, which takes place around 250 o C 8 .…”

Section: Characterization Of the Solids Obtained By Different Methodsmentioning

confidence: 99%

A Simple Way to Produce γ-Alumina From Aluminum Cans by Precipitation Reactions

et al. 2016

View full text Add to dashboard Cite

In this paper, a new way for γ-alumina synthesis was proposed, the raw material being aluminum powders obtained by high-energy milling of aluminum cans. This seems a good option for this metal recycling and energy saving, as well as hydrogen production. The materials were prepared by precipitation techniques, in which aluminum powders reacted with hydrochloric acid, giving aluminum chloride, which was subsequently transformed into aluminum hydroxide by reaction with ammonium hydroxide or sodium hydroxide as precipitant agents, and finally into γ-alumina by calcination. Results showed that the used preparation methods gave a γ-alumina structure, confirmed by XRD, with surface areas values (174 and 204 m 2 g -1 ) close to those of a commercial γ-alumina Cyanamid Ketjen (180 m 2 g -1 ) or an alumina prepared by a typical precipitation route (203 m 2 g -1 ). Using sodium hydroxide as precipitant agent turned out to be more ecologically compatible since it did not release harmful environmental compounds.

show abstract

“…Aluminum precipitates were digested with a mixture of HNO 3 and HCl and the Al concentration in the digest was determined by inductively coupled plasma atomic emission spectrometry (ICP-AES, Perkin Elmer, Optima 2000 DV).…”

Section: Aluminum Contentsmentioning

confidence: 99%

“…High reactivity of Al leads to hydrolytic reactions and to strong complexation with naturally occurring organic acids or polyphenols commonly present in soils (1)(2)(3). The relative distribution of the hydrolyzed and complexed Al species is the determining factor for Al mobility in soil solution and toxicity to natural ecosystems (4).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption of Cadmium on Aluminum Precipitates in the Absence or Presence of Catechins

Chen

Chiu

Tsao³

et al. 2013

Separation Science and Technology

View full text Add to dashboard Cite

The products of Al hydrolysis play significant roles in terrestrial and aquatic environments, particularly through their binding of nutrients and pollutants. However, the effect of catechins on the crystallization of Al precipitates and the resultant surface alteration of Al transformation products on their kinetics and mechanisms of adsorption of Cd still remain to be uncovered. The objective of this paper was to investigate the kinetics of Cd adsorption on the Al precipitates formed under the influence of catechin. The experiments were conducted with initial catechin/Al molar ratios, interaction time, concentration of Cd ions, and temperature as the variables. Six kinetic models were employed to investigate adsorption mechanisms, and data resembled more closely a second-order process. The structural perturbation of Al precipitates by catechin, resulting in the development of their microporosity and alteration of surface and charge properties, substantially enhanced the rate constants of both fast and slow reaction processes of Cd adsorption. The role of catechins, which vary in the structure and functionality and are common in natural environments in exerting the structural perturbation of Al transformation products and the impact on the dynamics and mechanisms of Cd transformation and transport in soils and waters, deserves increasing attention.

show abstract

Influence of catechin on precipitation of aluminum hydroxide

Cited by 13 publications

References 23 publications

Aluminium and nutrients induce changes in the profiles of phenolic substances in tea plants (Camellia sinensis CV TTES, No. 12 (TTE))

Aluminium and nutrients induce changes in the profiles of phenolic substances in tea plants (Camellia sinensis CV TTES, No. 12 (TTE))

A Simple Way to Produce γ-Alumina From Aluminum Cans by Precipitation Reactions

Adsorption of Cadmium on Aluminum Precipitates in the Absence or Presence of Catechins

Contact Info

Product

Resources

About