Simultaneous removal of ammonium and phosphate by alkaline-activated and lanthanum-impregnated zeolite

He, Yinhai; Lin, Hai; Dong, Yingbo; Liu, Quanli; Wang, Liang

doi:10.1016/j.chemosphere.2016.08.110

Cited by 165 publications

(49 citation statements)

References 51 publications

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“…In the last decade, aside from infiltration systems (filter strips, soakaways, infiltration trenches, infiltration basins) and significantly influence the daily, monthly and annual variability of the removal efficiency of transported contaminants. Most reports are focused on the analysis of the intensity of contaminant removal at ambient temperatures [30][31][32][33] or on assessing the impact of temperature increases above room temperature on the intensification of the process [34][35][36][37]; fewer studies indicate how temperature decrease, even to 0 °C, influences the ability of reactive materials to remove contaminants [38,39].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Temperature on the Removal of Inorganic Contaminants Typical of Urban Stormwater

Fronczyk

Mumford

2019

Applied Sciences

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Appropriate management of urban stormwater requires consideration of both water quantity, resulting from flood control requirements, and water quality, being a consequence of contaminant distribution via runoff water. This article focuses on the impact of temperature on the efficiency of stormwater treatment processes in permeable infiltration systems. Studies of the removal capacity of activated carbon, diatomite, halloysite, limestone sand and zeolite for select heavy metals (Cu and Zn) and biogenes (NH4-N and PO4-P) were performed in batch conditions at 3, 6, 10, 15, 22, 30 and 40 °C at low initial concentrations, and maximum sorption capacities determined at 3, 10, 22 and 40 °C. A decrease in temperature to 3 °C reduced the maximum sorption capacities (Qmax) of the applied materials in the range of 10% for diatomite uptake of PO4-P, to 46% for halloysite uptake of Cu. Only the value of Qmax for halloysite, limestone sand and diatomite for NH4-N uptake decreased slightly with temperature increase. A positive correlation was also observed for the equilibrium sorption (Qe) of Cu and Zn for analyses performed at low concentrations (with the exception of Zn sorption on limestone sand). In turn, for biogenes a rising trend was observed only in the range of 3 °C to 22 °C, whereas further temperature increase caused a decrease of Qe. Temperature had the largest influence on the removal of copper and the smallest on the removal of phosphates. It was also observed that the impact of temperature on the process of phosphate removal on all materials and ammonium ions on all materials, with the exception of zeolite, was negligible.

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Section: Introductionmentioning

confidence: 99%

The Impact of Temperature on the Removal of Inorganic Contaminants Typical of Urban Stormwater

Fronczyk

Mumford

2019

Applied Sciences

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“…Model ini juga menyatakan bahwa situs -situs aktif mempunyai energi adsorpsi yang berbeda -beda, situs yang memiliki enegi adsorpsi terbesar akan terisi penuh dahulu. Menurut Dada et al (2012) He et al (2016), dikarenakan banyaknya anion atau unsur -unsur pengganggu seperti ion CO3 2-, . konsentrasi ion CO3 2-yang tinggi dalam sampel air dapat menurunkan kemampuan adsorpsi fosfat secara tajam dari 93% menjadi 14%.…”

Section: Pendahuluanunclassified

“…Ion pengganggu lainnya menurut Yang et al (2006) yaitu SO4 2-, dan Cl -. Faktor pH juga sangat berpengaruh dalam penurunan fosfat menurut He et al (2016), Alshameri et al (2013), dan Kewei (2014). Zeolit dalam air dengan pH rendah memiliki ikatan positif sehingga mampu mengikat anion -anion fosfat seperti H2P04 -dan HP04 2-.…”

Section: Pendahuluanunclassified

Adsorpsi Senyawa Fosfat Total (PO4) dalam Air Buangan Laundry dengan Zeolit Termodifikasi

Wirosoedarmo¹,

Kurniati²,

Ardika³

2018

JSAL

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Permasalahan kerusakan lingkungan yang disebabkan oleh limbah yang dihasilkan oleh industri laundry adalah buangan cair yang mengandung senyawa fosfat. Kelebihan fosfat dalam air menyebabkan eutrofikasi. Wiranas adalah salah satu penyedia jasa laundry di kota Malang dan berdasar hasil uji laboratorium, air buangannya mengandung fosfat total sebesar 1,011 mg/L, dimana melebihi dari baku mutu yang telah ditetapkan dalam PP no.82 tahun 2001. Salah satu teknik yang dapat mengurangi kadar fosfat dalam air yaitu adsorpsi dengan zeolit. Zeolit alam memiliki beberapa kelemahan sehingga perlu dimodifikasi. Modifikasi zeolit pada penelitian ini menggunakan pencucian dengan larutan asam klorida dan air suling. Pencucian ini bertujuan untuk menghilangkan ion kalsium dan klor pada permukaan zeolit yang dapat menurunkan kemampuannya. Tujuan dari penelitian ini adalah untuk mengetahui kapasitas adsorpsi fosfat total dari zeolit termodifikasi, model adsorpsi dan efeknya berdasarkan variansi massa adsorben dan kecepatan pengadukan. Hasil penelitian menunjukkan bahwa zeolit termodifikasi mampu menjerap fosfat dengan efisiensi sebesar 47,56-71,93% dan model adsorpsinya mengikuti model Freundlich. Efek dari variansi massa adsorben dan kecepatan pengadukan tidak berpengaruh nyata berdasar uji ANOVA dengan alfa 5%. Kata Kunci : bioremediasi, Chlorella sp., kepadatan sel, krom total ABSTRACT Environmental harm problem caused by the laundry industry as a result of wastewater that produced containing phosphate. Excess phosphate contant in water body causes eutrophication. Wiranas is one of laundry service in Malang city and according to laboratory, the wastewater contain 1,011 mg/L phosphate, which is exceed standard quality of Law no.82 year 2001. One of the methods that can be applied to eliminate phosphate on the wastewater is adsorption using zeolit. Natural zeolit have some weakness to adsorp pollutan so it needs to be modified. Modification of natural zeolit in this research using acid chloride and aquades washing. This washing is for reduce calcium and chloride ions on the zeolit's surface who can decrease zeolit's potential. The aim of this research is to know the capacity of phosphate adsorption by modified zeolit, adsorption isotherm's model and its relation with the adsorbent's dose and mixing velocity. The results show that modified zeolit could adsorp phosphate with efficiency 47,56-71,93% and its adsorption isotherm conformed to Freundlich model. Effect of adsorbent's dose and mixing velocity to the adsorption of phosphate was not significantly different by ANOVA test with alpha 5%

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“…Alkaline-activated and lanthanum-impregnated natural zeolites (NaOH, LaCl3 modified zeolite) were used to remove both NH4 + and PO4 3- [24]. They performed adsorption tests with modified zeolites from solution containing 20 mg/L of N and 5 mg/L of P. The phosphate adsorption was observed as an increase from 0.20 mg/g for natural zeolite up to 8.96 mg/g for LaCl3-zeolite, and a slight decrease on the ammonium adsorption capacity from 23.9 mg/g for NaOH-zeolite to 21.2 mg/g for LaCl3-zeolite was observed [24]. The removal of both NH4 + and PO4 3from aqueous solution containing Ca, NH3, and PO4 (NH3 = 10 mg/L, molar ratio of Ca: PO4 = 5.01) was studied.…”

Section: Modified Natural Zeolites For Reducing Phosphate In Watermentioning

confidence: 99%

“…Contact time was set as 20 hours, which would be long enough to cause thorough ion exchange process between zeolite samples and ions in solutions, as observed in zeolite modification process in this study. Ranges of concentration of phosphate solution were determined based on previous studies using modified zeolites for phosphate removal [22,24,25].…”

Section: Preliminary Tests For Phosphate Removalmentioning

confidence: 99%

Development of modified natural zeolites and study of phosphate removal from aqueous solutions

Kondo¹

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Lake eutrophication has been an issue in many countries including Canada. Controlling and reducing the level of phosphorus, which is available as a form of phosphate in water, have been studied to manage the lake eutrophication. Natural zeolite-based adsorbents are one of the best candidates for water treatment due to its wide availability, cost-effectiveness, and superior characteristics as an ion exchanger. In this study, the concept of struvite crystallization was employed to develop magnesium-ammonium-modified zeolites (MNZ). Their removal capacity of phosphate was tested with comparison of magnesium-modified zeolites (MZ) based on the design of experiments (DOE) and response surface methodology (RSM). According to RSM, MNZ was found to be more effective in removing phosphates from aqueous solutions up to 92% of removal while MZ was effective up to 46% of removal. Contact time and zeolite dosage were found to be the significant parameters on phosphate removal.

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Simultaneous removal of ammonium and phosphate by alkaline-activated and lanthanum-impregnated zeolite

Cited by 165 publications

References 51 publications

The Impact of Temperature on the Removal of Inorganic Contaminants Typical of Urban Stormwater

The Impact of Temperature on the Removal of Inorganic Contaminants Typical of Urban Stormwater

Adsorpsi Senyawa Fosfat Total (PO4) dalam Air Buangan Laundry dengan Zeolit Termodifikasi

Development of modified natural zeolites and study of phosphate removal from aqueous solutions

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