scholarly journals Application of Gas-Permeable Membranes For-Semi-Continuous Ammonia Recovery from Swine Manure

Environments ◽  
2019 ◽  
Vol 6 (3) ◽  
pp. 32 ◽  
Author(s):  
Berta Riaño ◽  
Beatriz Molinuevo-Salces ◽  
Matías B. Vanotti ◽  
María Cruz García-González
Keyword(s):  
Acidic Solution ◽  
Membrane Surface ◽  
Swine Manure ◽  
Ammonia Nitrogen ◽  
Nitrogen Loading ◽  
Membrane Technology ◽  
Continuous Mode ◽  
Permeable Membrane ◽  
Total Ammonia Nitrogen ◽  
Total Ammonia

Gas-permeable membrane technology is a new strategy to minimize ammonia losses from manure, reducing pollution and recovering N in the form of an ammonium salt fertilizer. In this work, a new operational configuration to recover N using the gas-permeable membrane technology from swine manure was tested in a semi-continuous mode. It treated swine manure with a total ammonia nitrogen (TAN) concentration of 3451 mg L−1. The system was operated with low aeration rate (to raise pH), and with hydraulic retention times (HRT) of seven days (Period I) and five days (Period II) that provided total ammonia nitrogen loading rate (ALR) treatments of 491 and 696 mg TAN per L of reactor per day, respectively. Results showed a uniform TAN recovery rate of 27 g per m2 of membrane surface per day regardless of the ALR applied and the manure TAN concentration in the reactor. TAN removal reached 79% for Period I and 56% for Period II, with 90% of recovery by the membrane in both periods. Water capture in the acidic solution was also uniform during the experimental period. An increase in temperature of 3 °C of the acidic solution relative to the wastewater reduced 34% the osmotic distillation and water dilution of the product. These results suggested that the gas-permeable membrane technology operating in a semi-continuous mode has a great potential for TAN recovery from manure.

scholarly journals Study of Biofilter Planted with Basil for Removal of Ammonia in Aquaponic Water

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Bharat Nandkumar Mulay ◽  
Konda Rajasekhar Reddy
Keyword(s):  
Water Quality ◽  
Ammonia Nitrogen ◽  
Quality Parameters ◽  
Coarse Aggregates ◽  
Total Ammonia Nitrogen ◽  
Coconut Husk ◽  
Significant Difference ◽  
Total Ammonia ◽  
Water Recirculation ◽  
Aquaculture Water

Abstract This experimental investigation of a laboratory scale aquaponic system included testing of a biofilter with basil plant as the biofilter part on aquaculture water quality. Irridescent shark was selected as aquaculture species. The biofilter consist of natural biomaterials such as coconut husk, coco peat, and coarse aggregates. The experiment was carried out for three short water recirculation durations of 2, 3, and 4 h/day. The influent and effluent ammonia NH3, total ammonia nitrogen (TAN), nitrites NO2 and nitrates NO3 levels were measured and analysed. The results showed that the biofilter effectively removed NH3 (65 - 71 %), TAN (34 - 58 %), and NO2 (60 - 67 %) from the aquaculture water. The dissolved oxygen (DO) levels were maintained between 3 - 7.0 mg/l during all the recirculation durations. The significance of water recirculation period was assessed by calculating the differences between the means of water quality parameters with a statistical test named one-way analysis of variance (ANNOVA) with significant level P taken as 5 %, i.e., P ≤ 0.5. The effluent mean NH3 levels 0.030 mg/l, 0.033 mg/l, and 0.022 mg/l exhibited significant difference at 4 h/d periods while effluent TAN levels 0.81, 0.77, and 0.77 showed no difference with varying periods.

Total ammonia nitrogen (TAN) removal performance of a recirculating down-hanging sponge (DHS) reactor operated at 10 to 20 °C with activated carbon

Aquaculture ◽  
2020 ◽  
Vol 520 ◽  
pp. 734963 ◽  
Author(s):  
Mamoru Oshiki ◽  
Takashi Aizuka ◽  
Hirotoshi Netsu ◽  
Satoshi Oomori ◽  
Akihiro Nagano ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Ammonia Nitrogen ◽  
Total Ammonia Nitrogen ◽  
Total Ammonia

Micro-PAD card for measuring total ammonia nitrogen in saliva

2020 ◽  
Vol 412 (13) ◽  
pp. 3167-3176 ◽  
Author(s):  
Yanisa Thepchuay ◽  
Raquel B. R. Mesquita ◽  
Duangjai Nacapricha ◽  
António O. S. S. Rangel
Keyword(s):  
Ammonia Nitrogen ◽  
Total Ammonia Nitrogen ◽  
Total Ammonia

scholarly journals Integration between bioflocs and periphyton in Nile tilapia culture tanks

2017 ◽  
Vol 39 (5) ◽  
pp. 601
Author(s):  
Davi De Holanda Cavalcante ◽  
Francisco Roberto Dos Santos Lima ◽  
Vanessa Tomaz Rebouças ◽  
Marcelo Vinícius do Carmo e Sá
Keyword(s):  
Water Quality ◽  
Growth Performance ◽  
Specific Growth ◽  
Ammonia Nitrogen ◽  
Final Body Weight ◽  
Fish Yield ◽  
Beneficial Effects ◽  
Total Ammonia Nitrogen ◽  
Total Ammonia ◽  
Reactive Phosphorus

The present study aimed to assess the possible beneficial effects of the integration between bioflocs and periphyton to the Nile tilapia’s water quality and growth performance. There were four treatments with five replicates each: (1) Control: green waters, (2) Periphyton: substrate-based system, (3) BFT: bioflocs technology for aquaculture, and (4) Biophyton: integration between bioflocs and periphyton. Fish (1.63 ± 0.07 g) were reared for 10 weeks in twenty 250 L outdoor tanks. Two polyethylene boards were vertically set out in the Periphyton and Biophyton tanks as underwater substrates. The C: N ratios of water in the BFT and Biophyton tanks were adjusted to 15:1 with dry molasses applications. The concentrations of total ammonia nitrogen were higher in the Control and Periphyton tanks than in the BFT and Biophyton ones. On the other hand, the concentrations of reactive phosphorus were higher in the BFT and Biophyton tanks than in the Control and Periphyton ones. The fish final body weight, specific growth rate and fish yield have not differed between the tanks. The integration between bioflocs and periphyton has not brought clear benefits to tilapia culture on water quality and growth performance.  

scholarly journals High levels of total ammonia nitrogen as NH4+ are stressful and harmful to the growth of Nile tilapia juveniles - doi: 10.4025/actascibiolsci.v35i4.17291

2013 ◽  
Vol 35 (4) ◽  
Author(s):  
Francisco Jackes Rodrigues da Silva ◽  
Francisco Roberto dos Santos Lima ◽  
Diego Alves do Vale ◽  
Marcelo Vinícius do Carmo e Sá
Keyword(s):  
Nile Tilapia ◽  
Ammonia Nitrogen ◽  
Total Ammonia Nitrogen ◽  
Total Ammonia
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