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https://www.readbyqxmd.com/read/28920675/mitigation-of-n2o-emission-from-aquaponics-by-optimizing-the-nitrogen-transformation-process-aeration-management-and-exogenous-carbon-pla-addition
#1
Yina Zou, Zhen Hu, Jian Zhang, Yingke Fang, Minying Li, Jianda Zhang
N2O production in aquaponics is an inevitable concern when aquaponics is developed as a future production system. In the present study, two attempts were applied to mitigate N2O emission from aquaponics, i.e., aeration in hydroponic bed (HA) and addition of polylactic acid (PLA) into fillers (PA). Results showed that N2O emission from HA and PA was decreased by 47.1-58.1% and 43.2-74.9% respectively compared with that in control. Denitrification was proved to be the main emission pathway in all treatments, representing 62...
September 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28898831/improving-nitrogen-utilization-efficiency-of-aquaponics-by-introducing-algal-bacterial-consortia
#2
Yingke Fang, Zhen Hu, Yina Zou, Jian Zhang, Zhuoran Zhu, Jianda Zhang, Lichao Nie
Aquaponics is a promising technology combining aquaculture with hydroponics. In this study, algal-bacterial consortia were introduced into aquaponics, i.e., algal-bacterial based aquaponics (AA), to improve the nitrogen utilization efficiency (NUE) of aquaponics. The results showed that the NUE of AA was 13.79% higher than that of media-based aquaponics (MA). In addition, higher NO3(-) removal by microalgae assimilation led to better water quality in AA, which made up for the deficiencies of poor aquaponic management of nitrate...
August 22, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28892701/co-cultivation-of-microalgae-in-aquaponic-systems
#3
Min M Addy, Faryal Kabir, Renchuan Zhang, Qian Lu, Xiangyuan Deng, Dean Current, Richard Griffith, Yiwei Ma, Wenguang Zhou, Paul Chen, Roger Ruan
Aquaponics is a sustainable system for the future farming. In aquaponic systems, the nutrient-rich wastewater generated by the fish provides nutrients needed for vegetable growth. In the present study, the role of microalgae of Chlorella sp. in the floating-raft aquaponic system was evaluated for ammonia control. The yields of algal biomass, vegetable, and removal of the key nutrients from the systems were monitored during the operation of the aquaponic systems. When the systems were in full operation, the algae production was about 4...
August 25, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28712082/biological-nutrient-recovery-from-culturing-of-pearl-gourami-trichogaster-leerii-by-cherry-tomato-solanum-lycopersicum-in-aquaponic-system
#4
Shima Makhdom, Seyed Pezhman Hosseini Shekarabi, Mehdi Shamsaie Mehrgan
The possibility of using different densities of cherry tomato as a bio-filter in a simple media-based aquaponic system to recycle nutrients from pearl gourami intensive culture wastewater was evaluated. Water quality parameters including total ammonia nitrogen (TAN), nitrite (NO2(-)), nitrate (NO3(-)), phosphate (PO4(3-)), pH, and dissolved oxygen (DO) were determined in outlet of the aquaponic system during a 60-day experimental period. Cherry tomato was planted at four densities of 0 (control), 3 (T1), 6 (T2), and 9 (T3) plants per aquaponic unit with a constant fish stock density...
July 15, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28547371/improvement-of-aquaponic-performance-through-micro-and-macro-nutrient-addition
#5
Dongyun Ru, Jikai Liu, Zhen Hu, Yina Zou, Liping Jiang, Xiaodian Cheng, Zhenting Lv
Aquaponics is one of the "zero waste" industry in the twenty-first century, and is considered to be one of the major trends for the future development of agriculture. However, the low nitrogen utilization efficiency (NUE) restricted its widely application. To date, many attempts have been conducted to improve its NUE. In the present study, effect of micro- and macro-nutrient addition on performance of tilapia-pak choi aquaponics was investigated. Results showed that the addition of micro- and macro-nutrients improved the growth of plant directly and facilitated fish physiology indirectly, which subsequently increased NUE of aquaponics from 40...
July 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28545219/new-species-for-the-biomitigation-of-a-super-intensive-marine-fish-farm-effluent-combined-use-of-polychaete-assisted-sand-filters-and-halophyte-aquaponics
#6
Bruna Marques, Ricardo Calado, Ana I Lillebø
The main objective of this study was to test an innovative biomitigation approach, where polychaete-assisted (Hediste diversicolor) sand filters were combined with the production of Halimione portulacoides in aquaponics, to remediate an organic-rich effluent generated by a super intensive fish farm operating a land-based RAS (Recirculating aquaculture system). The set up included four different experimental combinations that were periodically monitored for 5months. After this period, polychaete-assisted sand filters reduced in 70% the percentage of OM and the average densities increased from ≈400ind...
December 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28074233/microbial-diversity-in-different-compartments-of-an-aquaponics-system
#7
Zala Schmautz, Andreas Graber, Sebastian Jaenicke, Alexander Goesmann, Ranka Junge, Theo H M Smits
Aquaponics is a solution for sustainable production of fish and plants in a single semi-closed system, where nutrient-rich water from the aquaculture provides nutrients for plant growth. We examined the microbial communities within an experimental aquaponics system. Whereas the fish feces contained a separate community dominated by bacteria of the genus Cetobacterium, the samples from plant roots, biofilter, and periphyton were more similar to each other, while the communities were more diverse. Detailed examination of the data gave the first indications to functional groups of organisms in the different compartments of the aquaponic system...
May 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/27575336/the-effect-of-ph-on-phosphorus-availability-and-speciation-in-an-aquaponics-nutrient-solution
#8
Brunno da Silva Cerozi, Kevin Fitzsimmons
The interaction between the main ions in aquaponics nutrient solutions affects chemical composition and availability of nutrients, and nutrient uptake by plant roots. This study determined the effect of pH on phosphorus (P) speciation and availability in an aquaponics nutrient solution and used Visual MINTEQ to simulate P species and P activity. In both experimental and simulated results, P availability decreased with increase in pH of aquaponics nutrient solutions. According to simulations, P binds to several cations leaving less free phosphate ions available in solution...
November 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27542617/amyloodinum-ocellatum-in-dicentrarchus-labrax-study-of-infection-in-salt-water-and-freshwater-aquaponics
#9
Valentina Nozzi, Silvia Strofaldi, Isabel Forner Piquer, Davide Di Crescenzo, Ike Olivotto, Oliana Carnevali
This investigation is aimed to improve the knowledge on the physiological alterations occurring at morphological and molecular level in European sea bass naturally infected by A. ocellatum and reared at different salinities. European sea bass juveniles (Dicentrarchus labrax) weighing 20 ± 0.5 g were divided in three aquaponics systems: CTRL, reared at 20 ppt salinity; AFI, reared in freshwater (0 ppt) and infected with the dinoflagellate Amyloodinium ocellatum; ASI, reared at 20 ppt salinity and infected with A...
October 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27521292/competitive-sorption-of-heavy-metals-by-water-hyacinth-roots
#10
Jia-Chuan Zheng, Hou-Qi Liu, Hui-Min Feng, Wen-Wei Li, Michael Hon-Wah Lam, Paul Kwan-Sing Lam, Han-Qing Yu
Heavy metal pollution is a global issue severely constraining aquaculture practices, not only deteriorating the aquatic environment but also threatening the aquaculture production. One promising solution is adopting aquaponics systems where a synergy can be established between aquaculture and aquatic plants for metal sorption, but the interactions of multiple metals in such aquatic plants are poorly understood. In this study, we investigated the absorption behaviors of Cu(II) and Cd(II) in water by water hyacinth roots in both single- and binary-metal systems...
December 2016: Environmental Pollution
https://www.readbyqxmd.com/read/27386980/model-of-an-aquaponic-system-for-minimised-water-energy-and-nitrogen-requirements
#11
D Reyes Lastiri, T Slinkert, H J Cappon, D Baganz, G Staaks, K J Keesman
Water and nutrient savings can be established by coupling water streams between interacting processes. Wastewater from production processes contains nutrients like nitrogen (N), which can and should be recycled in order to meet future regulatory discharge demands. Optimisation of interacting water systems is a complex task. An effective way of understanding, analysing and optimising such systems is by applying mathematical models. The present modelling work aims at supporting the design of a nearly emission-free aquaculture and hydroponic system (aquaponics), thus contributing to sustainable production and to food security for the 21st century...
2016: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/26783143/effects-of-ph-on-nitrogen-transformations-in-media-based-aquaponics
#12
Yina Zou, Zhen Hu, Jian Zhang, Huijun Xie, Christophe Guimbaud, Yingke Fang
To investigate the effects of pH on performance and nitrogen transformations in aquaponics, media-based aquaponics operated at pH 6.0, 7.5 and 9.0 were systematically examined and compared in this study. Results showed that nitrogen utilization efficiency (NUE) reached its maximum of 50.9% at pH 6.0, followed by 47.3% at pH 7.5 and 44.7% at pH 9.0. Concentrations of nitrogen compounds (i.e., TAN, NO2(-)-N and NO3(-)-N) in three pH systems were all under tolerable levels. pH had significant effect on N2O emission and N2O conversion ratio decreased from 2...
June 2016: Bioresource Technology
https://www.readbyqxmd.com/read/26645232/attempts-to-improve-nitrogen-utilization-efficiency-of-aquaponics-through-nitrifies-addition-and-filler-gradation
#13
Yina Zou, Zhen Hu, Jian Zhang, Huijun Xie, Shuang Liang, Jinhe Wang, Runxin Yan
Aquaponics has attracted worldwide attention in recent years and is considered as an alternative technology for conventional aquaculture. In this study, common carp (Cyprinus carpio) and pakchoi (Brassica chinensis) were cultured in lab-scale aquaponics, and attempts were conducted to enhance its nitrogen utilization efficiency (NUE) through two optimization methods, i.e., nitrifies addition (NA) and filler gradation (FG). Results showed that NA and FG could improve the NUE of aquaponics by 8.8 and 16.0%, respectively, compared with control...
April 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/26509157/perspective-for-aquaponic-systems-omic-technologies-for-microbial-community-analysis
#14
REVIEW
Perla Munguia-Fragozo, Oscar Alatorre-Jacome, Enrique Rico-Garcia, Irineo Torres-Pacheco, Andres Cruz-Hernandez, Rosalia V Ocampo-Velazquez, Juan F Garcia-Trejo, Ramon G Guevara-Gonzalez
Aquaponics is the combined production of aquaculture and hydroponics, connected by a water recirculation system. In this productive system, the microbial community is responsible for carrying out the nutrient dynamics between the components. The nutrimental transformations mainly consist in the transformation of chemical species from toxic compounds into available nutrients. In this particular field, the microbial research, the "Omic" technologies will allow a broader scope of studies about a current microbial profile inside aquaponics community, even in those species that currently are unculturable...
2015: BioMed Research International
https://www.readbyqxmd.com/read/25650140/effect-of-plant-species-on-nitrogen-recovery-in-aquaponics
#15
Zhen Hu, Jae Woo Lee, Kartik Chandran, Sungpyo Kim, Ariane Coelho Brotto, Samir Kumar Khanal
Nitrogen transformations in aquaponics with different edible plant species, i.e., tomato (Lycopersicon esculentum) and pak choi (Brassica campestris L. subsp. chinensis) were systematically examined and compared. Results showed that nitrogen utilization efficiencies (NUE) of tomato- and pak choi-based aquaponic systems were 41.3% and 34.4%, respectively. The abundance of nitrifying bacteria in tomato-based aquaponics was 4.2-folds higher than that in pak choi-based aquaponics, primarily due to its higher root surface area...
2015: Bioresource Technology
https://www.readbyqxmd.com/read/25146120/the-use-of-vertical-constructed-wetland-and-ultrasound-in-aquaponic-systems
#16
A Krivograd Klemenčič, T Griessler Bulc
Treatment performance, fish production, crop plant biomass production, water consumption, and water use efficiency of a pilot aquaponic system for small-scale land-based cyprinid fish farms were evaluated. The system consisted of a 36 m(3) Pond A with an initial carp load of 0.6 kg/m(3); of a treatment chain with a lamellar settler, a roughing filter, a vertical constructed wetland filled with expanded clay and planted with tomatoes; and of a low power ultrasound unit installed in the corner of the pond. The average circulation of the water in the system was 1...
January 2015: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/25029125/an-international-survey-of-aquaponics-practitioners
#17
David C Love, Jillian P Fry, Laura Genello, Elizabeth S Hill, J Adam Frederick, Ximin Li, Ken Semmens
Aquaponics, a combination of fish farming and soilless plant farming, is growing in popularity and gaining attention as an important and potentially more sustainable method of food production. The aim of this study was to document and analyze the production methods, experiences, motivations, and demographics of aquaponics practitioners in the United States (US) and internationally. The survey was distributed online using a chain sampling method that relied on referrals from initial respondents, with 809 respondents meeting the inclusion criteria...
2014: PloS One
https://www.readbyqxmd.com/read/23035930/revisions-of-the-fish-invasiveness-screening-kit-fisk-for-its-application-in-warmer-climatic-zones-with-particular-reference-to-peninsular-florida
#18
Larry L Lawson, Jeffrey E Hill, Lorenzo Vilizzi, Scott Hardin, Gordon H Copp
The initial version (v1) of the Fish Invasiveness Scoring Kit (FISK) was adapted from the Weed Risk Assessment of Pheloung, Williams, and Halloy to assess the potential invasiveness of nonnative freshwater fishes in the United Kingdom. Published applications of FISK v1 have been primarily in temperate-zone countries (Belgium, Belarus, and Japan), so the specificity of this screening tool to that climatic zone was not noted until attempts were made to apply it in peninsular Florida. To remedy this shortcoming, the questions and guidance notes of FISK v1 were reviewed and revised to improve clarity and extend its applicability to broader climatic regions, resulting in changes to 36 of the 49 questions...
August 2013: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/22594516/nitrous-oxide-n2o-emission-from-aquaculture-a-review
#19
REVIEW
Zhen Hu, Jae Woo Lee, Kartik Chandran, Sungpyo Kim, Samir Kumar Khanal
Nitrous oxide (N(2)O) is an important greenhouse gas (GHG) which has a global warming potential 310 times that of carbon dioxide (CO(2)) over a hundred year lifespan. N(2)O is generated during microbial nitrification and denitrification, which are common in aquaculture systems. To date, few studies have been conducted to quantify N(2)O emission from aquaculture. Additionally, very little is known with respect to the microbial pathways through which N(2)O is formed in aquaculture systems. This review suggests that aquaculture can be an important anthropogenic source of N(2)O emission...
June 19, 2012: Environmental Science & Technology
https://www.readbyqxmd.com/read/19819130/a-study-on-the-optimal-hydraulic-loading-rate-and-plant-ratios-in-recirculation-aquaponic-system
#20
Azizah Endut, A Jusoh, N Ali, W B Wan Nik, A Hassan
The growths of the African catfish (Clarias gariepinus) and water spinach (Ipomoea aquatica) were evaluated in recirculation aquaponic system (RAS). Fish production performance, plant growth and nutrient removal were measured and their dependence on hydraulic loading rate (HLR) was assessed. Fish production did not differ significantly between hydraulic loading rates. In contrast to the fish production, the water spinach yield was significantly higher in the lower hydraulic loading rate. Fish production, plant growth and percentage nutrient removal were highest at hydraulic loading rate of 1...
March 2010: Bioresource Technology
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