Thermodynamic and kinetic study on ammonium removal from a synthetic water solution using ion exchange resin

Sica, Mihaela; Duţă, Anca; Teodosiu, Carmen; Draghici, Camelia

doi:10.1007/s10098-013-0625-3

Cited by 59 publications

(47 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This could be due to the increased area of the adsorption sites, as the solid surface increases in solution [18]. Similar results of adsorption using biochar and adsorbents for NH 4 -N have been described for ion-exchange resins [19], zeolites [20], and activated carbon [21]. This result implies that the biochar pellet can play an important role as an absorbent of NH 4 -N when applied in cropland.…”

Section: Adsorption and Removal Rates Of Nh 4 -N From The Biochar Pelsupporting

confidence: 72%

Adsorption Characteristics of Ammonium Nitrogen and Plant Responses to Biochar Pellet

et al. 2018

View full text Add to dashboard Cite

For feasibility of carbon sequestration as well as in the mitigation of greenhouse gases for application of biochar pellet, this experiment was conducted, focusing on the adsorption characteristics of NH 4 -N on biochar pellet mixed with different ratios of pig manure compost. For NH 4 -N adsorption on biochar pellets, the loading amount of biochar pellet was 211.5 mg in 50 mL of aqueous solution, and the adsorption fitted very well with Langmuir isotherm. The maximum adsorption and removal rates were 2.94 mg g −1 and 92.2%, respectively, in the pellet that contained 90% of biochar. It was also observed, by kinetic models, that NH 4 -N was adsorbed fast on biochar pellet with a combination ratio of 9:1 of biochar pellet/pig manure. It was further observed that the higher the amount of biochar contained in the biochar pellet, the greater the adsorption of NH 4 -N. For the plant response observed for lettuce, it was shown that the leaf biomass in plots treated with a 9:1 biochar/pig manure compost increased by approximately 13% compared with the leaf biomass in plots treated with the compost alone. The leaf biomass of the other treatments was higher than that of the control. This implies that the application of biochar pellets, regardless of the biochar contents, might be useful for soil carbon sequestration and greenhouse gas mitigation for agricultural practices.

show abstract

Section: Adsorption and Removal Rates Of Nh 4 -N From The Biochar Pelsupporting

confidence: 72%

Adsorption Characteristics of Ammonium Nitrogen and Plant Responses to Biochar Pellet

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The reason can be explained as the following: when ammonia nitrogen concentration was ascertain, the more biochars are added, the more adsorption sites are provided, and the more easily the ammonia nitrogen is absorbed by these active sites. However, with the increase of the concentration of biochar, the competitive adsorption occurs on the surface active sites so that the adsorption capacity to ammonia nitrogen on the unit area is gradually reduced [22,31,39,40] .…”

Section: The Dosage Of Biocharmentioning

confidence: 99%

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

Liang

Huang

et al. 2016

MATEC Web Conf.

View full text Add to dashboard Cite

.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 .

show abstract

“…Surface and ground waters present significant amounts of harmful substances for human health and environment. Among such substances, excess nitrogen compounds like ammonium (NH 4 + ) can cause eutrophication depriving of oxygen to aquatic organisms in lakes and rivers. In addition, the NH 4 + ionized form moves much more slowly than other nitrogen compounds, thus persisting in groundwater for long periods of time after it enters the subsurface [1].…”

Section: Introductionmentioning

confidence: 99%

“…Among such substances, excess nitrogen compounds like ammonium (NH 4 + ) can cause eutrophication depriving of oxygen to aquatic organisms in lakes and rivers. In addition, the NH 4 + ionized form moves much more slowly than other nitrogen compounds, thus persisting in groundwater for long periods of time after it enters the subsurface [1]. Diverse anthropogenic activities, more specifically, fossil-fuel combustion, septic systems, sewage sludge, landfill leachate, and agricultural practices (including chemical fertilizers or animal manures), lead to an increase in the amount of ammonium in waters [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Al-Waste-Based Zeolite Adsorbent Used for the Removal of Ammonium from Aqueous Solutions

Sánchez-Hernández¹,

Padilla²,

López-Andrés

et al. 2018

International Journal of Chemical Engineering

View full text Add to dashboard Cite

is work evaluates the use of a synthetic NaP1 zeolite obtained from a hazardous Al-containing waste for the removal of ammonium (NH 4 + ) from aqueous solutions by batch experiments. Experimental parameters, such as pH (6-8), contact time (1-360 min), adsorbent dose (1-15 g/L), and initial NH 4 + concentration (10-1500 mg/L), were evaluated. Adsorption kinetic models and equilibrium isotherms were determined by using nonlinear regression. e kinetic was studied by applying both the pseudo-firstorder and pseudo-second-order models.e equilibrium isotherms were analyzed according to two-parameter equations (Freundlich, Langmuir, and Temkin) and three-parameter equations (Redlich-Peterson, Sips, and Toth). e results showed that the NH 4 + uptake on NaP1 was fast (15 min) leading to a high experimental sorption capacity (37.9 mg/g). e NH 4 + removal on NaP1 was a favorable process that followed the pseudo-first-order kinetic model. e NH 4 + adsorption was better described by the Sips (54.2 mg/g) and Toth (58.5 mg/g) models. NaP1 zeolite from Al-waste showed good NH 4 + sorption properties, becoming a potential adsorbent to be used in the treatment of contaminated aqueous effluents. us, a synergic effect on the environmental protection can be achieved: the end of waste condition of a hazardous waste and the water decontamination.

show abstract

Thermodynamic and kinetic study on ammonium removal from a synthetic water solution using ion exchange resin

Cited by 59 publications

References 22 publications

Adsorption Characteristics of Ammonium Nitrogen and Plant Responses to Biochar Pellet

Adsorption Characteristics of Ammonium Nitrogen and Plant Responses to Biochar Pellet

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

Al-Waste-Based Zeolite Adsorbent Used for the Removal of Ammonium from Aqueous Solutions

Contact Info

Product

Resources

About