Optimization of ammonium removal from waste water by natural zeolite using central composite design approach

Khosravi, Amir; Esmhosseini, Majid; Jalili, Jalal; Khezri, Shiva

doi:10.1007/s10847-012-0129-5

Cited by 23 publications

(8 citation statements)

References 33 publications

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“… 42 An increase in pH beyond the characteristic optimal values affects the adsorption properties of the zeolites and exchanging ions, leading to a decrease in adsorption capacity. 43 The NH 4 + ions were converted to NH 3 at higher pH values leading to a decrease ion exchange capacity with the zeolitic materials. 44 Likewise, different forms of ammonia in solution affects the surface charge of the adsorbent as well as the degree of ionization and speciation of the adsorbate.…”

Section: Resultsmentioning

confidence: 99%

Microwave-assisted synthesis of coal fly ash-based zeolites for removal of ammonium from urine

et al. 2020

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Section: Resultsmentioning

confidence: 99%

Microwave-assisted synthesis of coal fly ash-based zeolites for removal of ammonium from urine

et al. 2020

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“…From Figure. 4a , the EPS has obvious effect on COD removal in composite process, COD removal enhanced as PAC added and gets to the peak ultimately, and this target obviously became easier when EPS was kept at central level, suggested that PAC was a proper flocculant which could produce a positive effect on COD removal at low level of EPS for compounding 29 . From Figure.…”

Section: Resultsmentioning

confidence: 99%

Enhanced anaerobically digested swine wastewater treatment by the composite of polyaluminum chloride (PAC) and Bacillus megatherium G106 derived EPS

Guo

Huang

Chen

et al. 2017

Sci Rep

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A strain was isolated from biological sludge to produce EPS by using anaerobically digested swine wastewater (ADSW). Potential of the EPS in ADSW treatment were discussed. Results showed that the optimal fermentation medium for EPS production was determined as 4 g K2HPO4, 2 g KH2PO4, and 2 g sucrose dissolved in 1 L ADSW. After fermentation for 60 h, 2.98 g EPS with main backbone of polysaccharides can be extracted from 1 L of fermentation broth. The EPS showed good performances in ADSW treatment, after conditioned by this EPS, removal efficiencies of COD, ammonia, and TP reached 70.2%, 76.5% and 82.8%, respectively, which were higher than that obtained when chemicals were selected as conditioning agents. Removal efficiencies were further improved when the EPS and polyaluminum chloride (PAC) were used simultaneously, and finally reached 91.6%, 90.8%, and 92.5%, respectively, under the optimized conditioning process by the composite of EPS of 16 mg/L, PAC of 12 g/L, pH of 7.5, and agitation speed of 200 r/min.

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“…Water quality parameters (Temperature and dissolved) were measured in every three days and total ammonia nitrogen level was measured once every two weeks. Total ammonia nitrogen (TAN) was determined by using the Indo-Phenol blue method (Khosravi et al, 2012).…”

Section: Water Quality Analysismentioning

confidence: 99%

Protein digestibility status of locally available feed ingredients fed to Nile tilapia (Oreochromis niloticus) in the hatchery, Sebeta, Ethiopia

Yimer¹,

Tadesse²

2022

Afr. J. Agric. Res.

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The nutritional value of a feedstuff isn't only on its chemical composition, however, the content of the nutrients absorb by the aid of the fish. Thus, this study was developed to determine crude protein digestibility status of the five feeds (noug cake (NK), wheat bran (WB), soybean meal (SM), brewery waste (BW), and fish meal (FM) in Oreochromis niloticus. The experiment was conducted using 180 Oreochromis niloticus population with weight of 28.2 to 28.4 g, distributed in experimental randomized blocks design with five treatments and three replicates per treatment. Digestibility was estimated by the indirect method using chromic oxide at the concentration of 0.50 % of the diet as a marker. The apparent and true digestibility of the protein was estimated for noug cake, 87.1 and 89.1 %; wheat bran 74.3 and 78.7 %; soybean meal 88.3 and 90.0 %; brewery waste 65.4 and 67.8 %; fish meal 85.5 and 87.0 %, respectively in siphoning technique. Similar (P > 0.05) results were observed in striping and siphoning methods in all experimental ingredients. Soybean, noug cake and fish meal had better (P < 0.05) crude protein digestible by Oreochromis niloticus than wheat bran and brewery waste. Brewery waste was the lowest digestible by O. niloticus. The growth performance of the fish also in line with the crude protein digestibility status of the ingredient hence, the lowest growth performance was recorded in fish consumed brewery waste. This indicates, brewery waste isn't well digestible by O. niloticus.

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Optimization of ammonium removal from waste water by natural zeolite using central composite design approach

Cited by 23 publications

References 33 publications

Microwave-assisted synthesis of coal fly ash-based zeolites for removal of ammonium from urine

Microwave-assisted synthesis of coal fly ash-based zeolites for removal of ammonium from urine

Enhanced anaerobically digested swine wastewater treatment by the composite of polyaluminum chloride (PAC) and Bacillus megatherium G106 derived EPS

Protein digestibility status of locally available feed ingredients fed to Nile tilapia (Oreochromis niloticus) in the hatchery, Sebeta, Ethiopia

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