Ammonium removal from aqueous solutions by using natural Chinese (Chende) zeolite as adsorbent

Huang, Haiming; Xiao, Xianming; Yan, Bo; Yang, Liping

doi:10.1016/j.jhazmat.2009.09.156

Cited by 363 publications

(186 citation statements)

References 25 publications

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“…In general, assuming that the adsorption rate depends only on the surface area, the surface area of smaller particle will increase, and then dispersion path is shorten in the small adsorbent particle, because it provide a better opportunity to make the absorbed ions penetrate all internal pore structure [33,49,50] . The effect of particle size on the adsorption capacity of ammonia nitrogen has been also confirmed by the use of zeolite previously [51,52] .…”

Section: Particle Size Of Biocharmentioning

confidence: 76%

The Review on Adsorption and Removing Ammonia Nitrogen with Biochar on its Mechanism

Liang

Huang

et al. 2016

MATEC Web Conf.

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.The study on decreasing ammonia-nitrogen has received great attention in recent years. This paper summarizes the adsorption mechanism and the influencing factors. Thus, the feasibility of adsorption using biochar has been indicated. A few issues were proposed for the further study: the industrial application research on treatment, modification method for improving the efficiency of adsorption, desorption and regeneration of biochar ,model of adsorption mechanism, the physical and chemical properties of soil .

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Section: Particle Size Of Biocharmentioning

confidence: 76%

The Review on Adsorption and Removing Ammonia Nitrogen with Biochar on its Mechanism

Liang

Huang

et al. 2016

MATEC Web Conf.

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“…It was observed for the adsorption of ammonium by zeolite synthesized from fly ash, sawdust and Posidonia oceanica fibers within the pH range 5.5-10.5 [5,6,22] and by composites of g-alumina/KAS gel within the pH range 5-10 [23]. However the optimum removal efficiency of ammonium by the most types of zeolite tested is achieved when operating at pH value of 6 and 7 [8,24]. On the other hand, the agriculture residues seem to allow the removal of ammonium within a wide range of pH.…”

Section: Influence Of Phmentioning

confidence: 95%

“…Adsorbents such as activated carbon and zeolite are efficient and most often used for ammonium removal [7,8]. Conventional wastewater treatment technologies, however, are expensive to build and also have associated operational and maintenance problems.…”

Section: Introductionmentioning

confidence: 99%

Çam Kozalak Tozunun Bi̇osorbent Olarak Kullanilrak Sudan Amonyumun Uzaklaştirilmasi

Demirak¹,

Keskin²,

Şahin³

et al. 2015

Mugla Journal of Science and Technology

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Pine cone, a popular agricultural waste, was investigated as a novel ammonium biosorbent in its raw and sodium hydroxide modified form. Surface modification of pine cone powder were carried out using sodium hydroxide solution of concentarions (0,05 and 0,1mg/L) was described by a pseudo-second-order model predicting a chemisorption process. In addition, the equilibrium data were well characterized by the Langmuir isotherm model that confirmed the mono-layer coverage. The surface properties of raw pine cone powder and its sodium hydroxide modified form were analyzed by Scanning Electron Microscopy with Energy Dispersive Spectroscopy (SEM-EDS) and powder X-ray diffraction (XRD). The chemical composition of pine cone powder before and after biosorption of ammonium is discussed in relation to the XRD and SEM-EDS results. The results showed that the surface of pine cone powder samples is modified by sodium hydroxide solution and the chemical composition of pine cone powder samples is changed after biosorption of ammonium. This from presents an interesting option for tertiary wastewater treatment (as a possible non-conventional biosorbent for the removal of ammonium

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“…The ion exchange method uses an absorbent of natural zeolite and has been confirmed as a promising technique for ammonia removal [17][18][19][20][21][22]. The use of natural zeolite for ammonia removal is considered to be a competitive and effective method [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Applicability of Natural Zeolite for NH-Forms Removal in Enzyme-Mediated Calcite Precipitation Technique

2017

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This study evaluated the applicability of natural zeolite for the removal of the NH-forms in the enzyme-mediated calcite precipitation technique. The natural zeolite of mordenite was added to prepared grouting solutions composed of urea and urease and mixed thoroughly using a rotation table for the mixing times of 0.5, 1.0, and 2.0 h. Then, the concentrations of evolving NH-forms in the solutions were measured. The effects of the presence of zeolite on the amount and the mineralogical substance of the precipitated minerals were also evaluated by X-ray powder diffraction and scanning electron microscopy analyses. Sand samples were treated with the grouting solutions containing zeolite, and the improvement in strength was assessed. It was found that utilizing zeolite in grouting solutions can reduce the concentration of NH-forms. A significant reduction in the concentration of NH-forms was obtained. The addition of 10 g natural zeolite/L solution, combined with the 2-h mixing time, resulted in removal efficiencies of 75% and 45% in reagent concentrations of 0.5 and 1.0 mol/L, respectively. Mechanical test results showed that the grouting solutions also brought about a significant improvement in the soil strength. A precipitated material, comprising 9% of the sand mass, was produced by three pore volume (PV) injections of the grouting materials, which showed an unconfined compressive strength of 300 kPa.

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Ammonium removal from aqueous solutions by using natural Chinese (Chende) zeolite as adsorbent

Cited by 363 publications

References 25 publications

The Review on Adsorption and Removing Ammonia Nitrogen with Biochar on its Mechanism

The Review on Adsorption and Removing Ammonia Nitrogen with Biochar on its Mechanism

Çam Kozalak Tozunun Bi̇osorbent Olarak Kullanilrak Sudan Amonyumun Uzaklaştirilmasi

Applicability of Natural Zeolite for NH-Forms Removal in Enzyme-Mediated Calcite Precipitation Technique

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