Removal of ammonia by natural clay minerals using fixed and fluidised bed column reactors

Çelik, M. S.; Özdemir, B.; Turan, Mustafa; Koyuncu, İsmail; Atesok, G.; Sarikaya, H. Z.

doi:10.2166/ws.2001.0010

Cited by 55 publications

(28 citation statements)

References 4 publications

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“…The exhausted column was subjected to desorption to regenerate the adsorbent using a 1.0 M NaCl solution at pH 12 (adjusted using sodium hydroxide) (Celik et al, 2001 To regenerate the column, NaCl was pumped through the adsorbent in the up flow mode and the breakthrough solution was collected for determination of ammonia content.…”

Section: Regeneration Studymentioning

confidence: 99%

Ammonia Removal From Sewage Wastewater Using Chemically Modified Sand

Halim¹,

Hanafiah²,

Khairi

2017

Appl Ecol Env Res

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Abstract. The study was conducted to observe the effectiveness and the efficiency of the adsorption method to remove ammonia from sewage water. The experimental design involves fixed-bed column, desorption and regeneration study. The results showed that the modified sand performed better in removing ammonia from sewage compared with pristine sand and regenerated used modified sand. The experimental data showed a better fit to the Thomas and Yoon-Nelson adsorption models. We found that the modified sand removed ammonia up to 99% and remained 80% of removal after 50 minutes compared to the pristine sand that was only 78.51% and gradually dropped to 10% after 50 minutes.Modified sand recorded the maximum adsorption capacity of 0.014 mg/g compared to 0.0033 mg/g for pristine sand and 0.0087 mg/g for regenerated used modified sand. Modified sand was able to be reused using a relatively low cost regenerating solution (NaCl).

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Section: Regeneration Studymentioning

confidence: 99%

Ammonia Removal From Sewage Wastewater Using Chemically Modified Sand

Halim¹,

Hanafiah²,

Khairi

2017

Appl Ecol Env Res

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“…Zeolit jenis klinoptilolit mempunyai kapasitas menyerap ion yang tinggi, sehingga dapat dimanfaatkan sebagai reservoir amonia. Proses pelepasan amonia yang cepat akan menjadi lambat setelah ada penambahan zeolit jenis klinoptilolit sehingga pemanfaatan amonia akan lebih efisien (Celik et al, 2011).…”

Section: Pendahuluanunclassified

Sintesis protein mikroba dan aktivitas selulolitik akibat penambahan level zeolit sumber nitrogen slow release pada glukosa murni secara in vitro

Qori'ah

Surono

Sutrisno

2016

JIIP

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This research aimed to determine the effect of the level of zeolites as slow release nitrogen in pure glucose on microbial protein synthesis and cellulolytic activity. The material used were zeolite of clinoptilolite type with size 40-60 mesh, urea, pure glucose, cow's rumen fluid from RPH Ungaran. The research used completely randomized design (CRD) with 5 treatments and 4 replications. The treatments were T1, T2, T3, T4 and T5 = pure glucose + additional level 2%, 4%, 6%, 8% and 10% of zeolite slow release respectively. Variables observed were microbial protein synthesis and cellulolytic activity. The results showed that the treatment significantly (P<0.05) increased microbial protein synthesis and cellulolytic activity. Results of protein synthesis from higher to lower number were T2 (59.50 mg/ml), T3 (55.58 mg/ml), T4 (47.55 mg/ml), T5 (42.82 mg/ml) and T1 (31.68 mg/ml) respectively. Results of cellulolytic activity from higher to lower number were T5 (3.55 mol ml -1 min -1 ), T4 (2.36 mol ml -1 min -1 ), T2 (2.23 mol ml -1 min -1 ), T3 (2.16 mol ml -1 min -1 ) and T1 (2.09 mol ml -1 min -1 ) respectively. The results of microbial protein synthesis and cellulolytic activity at each treatment were in normal level. The addition of the zeolite level as slow release nitrogen source up to 4% increase microbial protein synthesis. Keywords : Zeolites, microbial protein synthesis and activity of cellulolytic PENDAHULUANSumbangan sumber protein terbesar untuk kebutuhan ternak ruminansia berasal dari protein mikroba yaitu ± 60-80% selain juga bersumber dari pakan dan protein enzim. Ketersediaan amonia dalam rumen sangat mempengaruhi populasi mikroba rumen sehingga berpengaruh pula pada sintesis protein mikroba. Salah satu sumber amonia yaitu hasil hidrolisis urea yang dibutuhkan ternak ruminansia sebagai sumber non protein nitrogen (NPN). Kelemahan dari urea yaitu mempunyai sifat higroskopis atau cepat terhidrolisis menjadi amonia didalam rumen, sehingga sebagian besar amonia akan mudah diserap dan masuk dalam sistem peredaran darah. Hal tersebut bisa menyebabkan keracunan pada ternak sehingga terjadi penurunan konsumsi pakan, bahkan menyebabkan kematian (Kardaya dkk, 2009). Perlu adanya modifikasi untuk mengikat amonia dan kemudian dilepaskan kembali secara perlahan.Pemberian urea harus diimbangi dengan sumber karbohidrat yang fer-

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“…In figure 3 that plotted from data in table 2 the rate of nitrification measured as mg N oxidized l -1 hr -1 is plotted vs. the concentration of MLVSS. [7,9,10]. This process is rapid and time required for regeneration depends very much upon the nitrifying activity of the sludge used.…”

Section: Characterization Of Clinoptilolitementioning

confidence: 99%

“…Clinoptilolite is a natural zeolite that has been known for their ability to remove ammonium from polluted waters. The capacity of zeolite and chemical regeneration for ammonium removal was investigated in several studies [3][4][5][6][7][8]. Usually, the service cycle is a down flow packed bed column followed by chemical regeneration (usually by NaCl).The major drawback of this process is the high cost of the chemical regeneration stage and disposal of the concentrated ammonium-sodium brain produced [9].…”

Section: Introductionmentioning

confidence: 99%

Use of ion exchange for removal of Ammonium: A biological regeneration of zeolite

2013

Issue 2

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Nitrogen in the Ammonia form can have deleterious effects in water resources. Ion Exchange by zeolite and biological Nitrification processes are two proposed methods for removing Nitrogen compounds from wastewater and effluents. The main objective of this research was to investigate the efficiency of nitrifying bacteria for regenerating Clinoptilolite zeolite. In this research, the Semnan Clinoptilolite zeolite was supplied in mesh 30. Then the capacity of zeolite in ammonium removal was determined in column system. To cultivate of nitrifying bacteria a sludge sample was taken from a domestic wastewater treatment plant and added to a 15 l aeration tank. Ammonium and other nutrients were added in the reactor daily over a month period and the effect of nitrate anion and MLVSS on nitrification process have been determined. After saturation of zeolite with ammonium, biological regeneration was done by contact of zeolite and nitrifying bacteria in column system. In this stage slurry of nitrifying bacteria is pumped up flow through the zeolite column and recycled to the aeration tank. The effluent containing the displaced ammonium is oxidized to nitrate by the nitrifying bacteria. Then the nitrified brine is clarified in a sedimentation tank and stored for reuses.The results showed that the cation exchange capacity was 10.06 (in breakthrough point) and 18.38 mg NH 4 + g -1 zeolite as total capacity. The results indicated that nitrification accelerated by increasing in MLVSS concentration and concentration of nitrate remains in solution. The results obtained from bioregeneration tests of zeolite showed that the efficiency was 87.7 to 99.8% in period of 3.5 to 5.5 hours. Based on the results, since regeneration is achieved in high concentration of nitrate, the use of nitrifying sludge in several cycles is possible and the use of system can be appreciated to an alternative economical method for removing NH 4 + from effluent.

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Removal of ammonia by natural clay minerals using fixed and fluidised bed column reactors

Cited by 55 publications

References 4 publications

Ammonia Removal From Sewage Wastewater Using Chemically Modified Sand

Ammonia Removal From Sewage Wastewater Using Chemically Modified Sand

Sintesis protein mikroba dan aktivitas selulolitik akibat penambahan level zeolit sumber nitrogen slow release pada glukosa murni secara in vitro

Use of ion exchange for removal of Ammonium: A biological regeneration of zeolite

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