Phosphorus sorption from aqueous solution using natural materials

Eljamal, Osama; Okawauchi, Junya; Hiramatsu, Kazumasa; Harada, Masayoshi

doi:10.1007/s12665-012-1789-6

Cited by 35 publications

(20 citation statements)

References 10 publications

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“…The R 2 calculated for the Langmuir adsorption equation decreased as follows: AC > zeolite > quartz sand II > quartz sand III > quartz sand I > ceramic > furnace slag > quartz sand IV. The R 2 for the same substrates but with different adsorption The Langmuir isotherm is a physical adsorption model that was calculated on the basis of assuming that the adsorbed gas forms the monomolecular layer on a uniform surface [18][19], which indicates that the P adsorption isotherm of the substrates with finer grain sizes or higher specific surface areas could be more properly fitted by the Langmuir than the Freundlich equation. Thus, the R 2 of quartz sand II was higher than that of quartz sand III when fitted using Langmuir due to its finer grain size, and the R 2 for AC was the highest among the tested substrates because it had the highest specific surface area (Table 1).…”

Section: Adsorption Isothermmentioning

confidence: 99%

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Phosphorus Adsorption Capacity Evaluation for the Substrates Used in Constructed Wetland Systems: a Comparative Study

Hirata¹,

Hu²

2017

Pol. J. Environ. Stud.

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CWs have been designed and constructed to use natural processes for the removal of pollutants from contaminated water in a more controlled environment [1][2][3]. Previous results have shown that substrate adsorption plays the most important role in P immobilization [4][5][6][7][8]. Therefore, cheap and effective P adsorbents are highly desirable [9][10][11].The most commonly used substrates in CWs are quartz sands [12], activated carbon (AC) [12][13], zeolite [14], ceramic [15], and furnace slag [16][17], and prior research has shown that the removal of P by these substrates mainly occurs though physical adsorption, chemical precipitation, and ion exchange [10][11]. However, P sorption properties of the substrates have not been systematically estimated, which resulted in many defective packing layer designs for CWs [3,11]. Thus, it is important to evaluate the P adsorption properties of the substrates before full-scale use was performed.Pol. J. Environ. Stud. Vol. 26, No. 3 (2017) AbstractTo provide a selection criteria to choose substrates according to the quality of the water requiring treatment in constructed wetlands (CWs), phosphorus (P) adsorption properties of four quartz sands with different physicochemical characteristics and four substrates commonly used in CWs were tested and evaluated via both the Langmuir and Freundlich equations. The effects of organic maters (OM) on P adsorption capacities of the substrates were also studied to evaluate the practical values of the substrates. The Langmuir sorption isotherm was used to estimate the P adsorption capacities of the tested substrates in CWs. Overall, the maximum P adsorption for all of the tested substrates decreased as follows: furnace slag > ceramic > zeolite > activated carbon > quartz quartz sands. The P adsorption capacities were significantly influenced by grain size; specific surface area; Fe, Al, Mg, and Ca contents in the substrates; and the amount of added OM. The chemical precipitation of P by the substrates containing Fe was more effective than those containing Ca at the same level. Added OM impacts P sorption by influencing pH, and substrates containing higher Fe and Al concentrations and lower Ca concentrations were more resistant to decreases in the P adsorption capacities due to OM accumulation. Finally, a principle for selecting substrates for the treatment of wastewater with different characteristics was determined.

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Section: Adsorption Isothermmentioning

confidence: 99%

“…The Langmuir isotherm is a physical adsorption model that was calculated on the basis of assuming the adsorbed gas form monomolecular layer on a uniform surface [18][19]. The greatest advantage of the application of Langmuir in adsorption study is that it enables the estimate of the theoretical P adsorption maximum of a substrate [9,20].…”

mentioning

confidence: 99%

Phosphorus Adsorption Capacity Evaluation for the Substrates Used in Constructed Wetland Systems: a Comparative Study

Hirata¹,

Hu²

2017

Pol. J. Environ. Stud.

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“…Secondly, huge amounts of agricultural wastes generated worldwide represent an environmental burden. The recycling wastes to control PO4 3-pollution provides a viable option to reduce wastes in a low cost and green way Ismail 2012;Eljamal et al 2013). This also fits well with one of the 12 principles of Green Chemistry, i.e.…”

Section: Dissolved Phosphorus (Organic)mentioning

confidence: 99%

“…Therefore, it is a critical factor in evaluating the efficacy of AWBs (Eljamal et al 2013). In many cases, the adsorption was found to be rapid, reaching the equilibrium in approximately 1 h. The equilibrium time was found to be 20 min.…”

Section: Effect Of Contact Timementioning

confidence: 99%

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Agricultural By-Products for Phosphorous Removal and Recovery from Water and Wastewater: A Green Technology

Ngo

Guo

Nguyen

et al. 2016

Green Technologies for Sustainable Water Management

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Biosorbent, a promising material for remediation of eutrophic environments: studies in microcosm

Pantano

Ferreira

Aquino

et al. 2016

Environ Sci Pollut Res

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Eutrophication is considered a global environmental problem that causes economic and biodiversity loss. Together with excess phosphorus in some aquatic environments, there is the depletion of phosphate rock deposits, which can directly affect fertilizer production and therefore global food security. Thus, the present work aimed to study a new remediation technique for eutrophic environments that enables the recovery of these environments through phosphorus adsorption in sawdust, creating the possibility to apply the phosphorus-enriched material as an agricultural fertilizer. The study was conducted in 36 microcosm flasks with water and sediment samples from a eutrophic reservoir in Ibirité/MG. The experiment was carried out using 18 control flasks and 18 others as treatment, consisting of water and eutrophic environment sediment and, additionally, two bags, containing 10 g of sawdust in each bag. The phosphorus adsorption on sawdust was more intense after 49 days of immersion in the microcosm, and reductions of 90% in the concentration of reactive soluble phosphorus were observed in the water column of the microcosm treatment at 159 days of the experiment. Based on the results, it can be concluded that, although the phosphorus concentration adsorbed on sawdust (16.2 μg g) is considered low, the use of the biosorbent is a particularly promising technique for remediation of eutrophic environments, as well as the possible reuse of the adsorbed phosphorus as a fertilizer in agriculture.

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Phosphorus sorption from aqueous solution using natural materials

Cited by 35 publications

References 10 publications

Phosphorus Adsorption Capacity Evaluation for the Substrates Used in Constructed Wetland Systems: a Comparative Study

Phosphorus Adsorption Capacity Evaluation for the Substrates Used in Constructed Wetland Systems: a Comparative Study

Agricultural By-Products for Phosphorous Removal and Recovery from Water and Wastewater: A Green Technology

Biosorbent, a promising material for remediation of eutrophic environments: studies in microcosm

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