Removal of nitrate from aqueous solution using cetylpyridinium bromide (CPB) modified zeolite as adsorbent

Zhan, Yanhui; Lin, Jianwei; Zhu, Zhiliang

doi:10.1016/j.jhazmat.2010.12.090

Cited by 114 publications

(34 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The existence of anions impedes the exchange of the adsorbates with the resins, then a competitive adsorption may occur [35,36]. More sites are combined with more inorganic ions and spare amine groups are less.…”

Section: Effect Of the Coexisting Ionsmentioning

confidence: 99%

A comparative study on the adsorption of 8-amino-1-naphthol-3,6-disulfonic acid by a macroporous amination resin

Zhang

Wang

Yang

et al. 2016

Chemical Engineering Journal

View full text Add to dashboard Cite

Section: Effect Of the Coexisting Ionsmentioning

confidence: 99%

A comparative study on the adsorption of 8-amino-1-naphthol-3,6-disulfonic acid by a macroporous amination resin

Zhang

Wang

Yang

et al. 2016

Chemical Engineering Journal

View full text Add to dashboard Cite

“…Anionic properties on the zeolitic surface can efficiently be improved using surfactants modification. [8] Meanwhile, phosphate precipitation by lanthanum is more effective than either ferric or aluminium salts over a wide pH range. The forming lanthanum -phosphate complexes are highly insoluble.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus Removal From Aqueous Solution By Adsorption Onto La-modified Clinoptilolite

Wang

Qiu

et al. 2016

MATEC Web Conf.

View full text Add to dashboard Cite

Abstract.A La-modified clinoptilolite adsorbent was developed for phosphorus removal from aqueous solution. The effects of operational parameters such as pH, adsorbent dosage, contact time and temperature on phosphorus adsorption were investigated. The results showed that the phosphorus removal ratio of modified clinoptilolite (99.45%) was significantly improved, which was over triple than that of natural ones (31.50%) under optimum conditions. The adsorption process was well described by the pseudo-second-order kinetic model. Moreover, the adsorption data closely fitted the Freundlich isotherm model. The proper pH for phosphorus removal ranged from 5 to 8. The adsorption process was appeared to be controlled by chemical precipitation. The mechanism might involve ion complexation during subsequent adsorption of phosphorus on lanthanum hydroxides. It cost modified clinoptilolite less time to reach equilibrium. The application of modified clinoptilolite is available in wastewater treatment.

show abstract

“…[16,17] To enhance sorption capacity of the clays for hydrophobic and anionic herbicides, the mineral surfaces can be pretreated with organic cations such as alkylammonium surfactants that have a positively charged head group and a hydrophobic tail. [16][17][18] 256 Shirvani et al…”

Section: Introductionmentioning

confidence: 99%

Mobility and efficacy of 2,4-D herbicide from slow-release delivery systems based on organo-zeolite and organo-bentonite complexes

Shirvani

Farajollahi

Bakhtiari

et al. 2014

Journal of Environmental Science and Health, Part B

View full text Add to dashboard Cite

This research aimed to develop slow-release formulations (SRFs) of 2,4-dichlorophenoxyacetic acid (2,4-D) using zeolite and bentonite minerals modified with cetyltrimethylammonium (CTMA) surfactant. Adsorption-desorption, greenhouse bioassay and column experiments were carried out to assess the potential of the SRFs to control weeds while reducing the herbicide leaching losses to deep layers of soil. The results showed that only 6.5 mmol 2,4-D kg −1 was retained by Na-bent, and the herbicide was not adsorbed by Na-zeol at all. The surface modification with CTMA surfactant, however, improved the 2,4-D adsorption capacity of the zeolite and bentonite up to 207.5 and 415.8 mmol kg , respectively. The synthesized organo-minerals slowly released the retained 2,4-D discharging 22 to 64% of the adsorbed 2,4-D to the solution phase within 7 days. The SRFs significantly (P = 0.05) reduced the herbicide mobility within the soil columns keeping a great portion of the herbicide active ingredient in the upper 5 cm soil layer. The SRFs were significantly (P = 0.05) as effective as the free technical herbicide in weed control without harming the ryegrass as the main plant. Therefore, the synthesized SRFs could be considered as useful tools for weed control in sustainable agriculture.

show abstract

Removal of nitrate from aqueous solution using cetylpyridinium bromide (CPB) modified zeolite as adsorbent

Cited by 114 publications

References 28 publications

A comparative study on the adsorption of 8-amino-1-naphthol-3,6-disulfonic acid by a macroporous amination resin

A comparative study on the adsorption of 8-amino-1-naphthol-3,6-disulfonic acid by a macroporous amination resin

Phosphorus Removal From Aqueous Solution By Adsorption Onto La-modified Clinoptilolite

Mobility and efficacy of 2,4-D herbicide from slow-release delivery systems based on organo-zeolite and organo-bentonite complexes

Contact Info

Product

Resources

About