Aquaponics for resource recovery and organic food productions

Wongkiew, Sumeth; Hu, Zhen; Nhân, Hứa Thái; Khanal, Samir Kumar

doi:10.1016/b978-0-444-64309-4.00020-9

Cited by 7 publications

(11 citation statements)

References 41 publications

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“…Aquaponics is a sustainable food and/or biomass production NBS_u in which aquatic organisms (aquaculture) are coupled with horticultural soilless crop production (hydroponics), with the metabolic wastes produced by the fish being transformed via nitrification (bioremediation) for use as fertilizers (nutrients) for plants. These processes were recently investigated in depth [30][31][32][33]. A case study in Berlin (Germany) showed that the total demand for fish and vegetable production (tomato and lettuce) could be provided by aquaponics [34].…”

Section: The Current Sectoral View Against a Much-needed Holistic/systemic Approach To Circular Management Of Resources In Citiesmentioning

confidence: 99%

Towards a Cross-Sectoral View of Nature-Based Solutions for Enabling Circular Cities

Langergraber

Castellar

Andersen

et al. 2021

Water

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A framework developed by the COST Action Circular City (an EU-funded network of 500+ scientists from 40+ countries; COST = Cooperation in Science and Technology) for addressing Urban Circularity Challenges (UCCs) with nature-based solutions (NBSs) was analyzed by various urban sectors which refer to different fields of activities for circular management of resources in cities (i.e., reducing use of resources and production of waste). The urban sectors comprise the built environment, urban water management, resource recovery, and urban farming. We present main findings from sector analyses, discuss different sector perspectives, and show ways to overcome these differences. The results reveal the potential of NBSs to address multiple sectors, as well as multiple UCCs. While water has been identified as a key element when using NBSs in the urban environment, most NBSs are interconnected and also present secondary benefits for other resources. Using representative examples, we discuss how a holistic and systemic approach could facilitate the circular use of resources in cities. Currently, there is often a disciplinary focus on one resource when applying NBSs. The full potential of NBSs to address multifunctionality is, thus, usually not fully accounted for. On the basis of our results, we conclude that experts from various disciplines can engage in a cross-sectoral exchange and identify the full potential of NBSs to recover resources in circular cities and provide secondary benefits to improve the livelihood for locals. This is an important first step toward the full multifunctionality potential enabling of NBSs.

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Section: The Current Sectoral View Against a Much-needed Holistic/systemic Approach To Circular Management Of Resources In Citiesmentioning

confidence: 99%

Towards a Cross-Sectoral View of Nature-Based Solutions for Enabling Circular Cities

Langergraber

Castellar

Andersen

et al. 2021

Water

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“…Microbial communities in the biofilter, membrane surface, sedimentation tank sludge zone, and mechanical filter media are involved in biological processes under both aerobic and anoxic conditions . Attached-growth biofilters are typically used due to their high stability and simplicity in operation. − Microbial communities in the biofilter vary with aerobic and anoxic conditions; the environments in the system can be controlled to some extent by adjusting operating parameters (e.g., pH levels, dissolved oxygen (DO) concentrations, and hydraulic loading rates (HLR)). , However, even when air is supplied to the biofilter, anoxic conditions may prevail in the inner part of the biofilm because of the poor mass transfer of oxygen .…”

Section: Applications Of Aquaponics–bioponics For Nitrogen Recoverymentioning

confidence: 99%

“…Combinations of aquaponics and bioponics using several waste streams or using a nutrient equalization tank may reduce the risk of nitrogen deficiency. Several studies suggested two useful strategies to achieve 100% NUE, namely, (1) balancing nitrogen input and outputs using an optimal plant-to-waste ratio (e.g., plant-to-feed ratio in aquaponics) and (2) implementing sensors and automations with Internet of Things (IoT) for the aquaponic–bioponic system process control (section ). − However, the first approach requires experimental studies to obtain optimal plant-to-waste ratio, while the second strategy needs more optimization studies on nutrient sensors, process control, and artificial intelligence (section ).…”

Section: Generation and Utilization Of Major Nutrients In Aquaponics–...mentioning

confidence: 99%

“…Organic compost fertilizer used in bioponics can supplement aquaponics to improve the nutrient availability for plants. Thus, aquaponics–bioponics could eliminate the cost of organic waste treatment by diverting it to production of high-value organic foods. , Aquaponics–bioponics also has potential for sustainable crop production to meet the global food demand under extreme weather conditions. , …”

Section: Introductionmentioning

confidence: 99%

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Nitrogen Recovery via Aquaponics–Bioponics: Engineering Considerations and Perspectives

Wongkiew

Lee

et al. 2021

ACS EST Eng.

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Nitrogen, a critically important nutrient that boosts yields in agriculture and food production, is currently overused to meet the rising demand for food. Surplus nitrogen ends up in the environment in excess of the capacity of natural nitrogen cycle, thereby leading to serious environmental pollutions, such as eutrophication of water bodies and emission of nitrous oxide (a highly potent greenhouse gas) to atmosphere. Aquaponics− bioponics is an emerging soilless technology for nitrogen recovery that links organic vegetable production to aquaculture effluent remediation (aquaponics) or organic waste recycling (bioponics). This Review presents the concept of aquaponics−bioponics for nitrogen recovery. Nitrogen transformations and nitrogen mass distributions in aquaponic−bioponic systems are critically discussed, along with the nutrient availability of several organic composts that can be integrated with the systems, and the microbial communities involved. This discussion is followed by a dynamic nitrogen modeling for managing nitrogen from different wastes in aquaponics−bioponics. Various emerging engineering technologies that could improve aquaponics−bioponics are presented, including aeration with microbubbles and/or nanobubbles, cocultivation with algae, process automation with Internet of Things, and integration with indoor vertical farming (plant factory with artificial light). Overall, the Review lays out the state-of-art in aquaponics−bioponics and highlights potential approaches for developing highly efficient nitrogen recovery technologies from diverse organic waste streams.

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“…Aquaponics is considered a model of sustainable food production (Goddek et al 2015), an innovative farming technique with the potential to produce food to cope with the population growth and the impacts of climate change on food security (Wongkiew et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Characterisation of aquaponic producers and small-scale facilities in Spain and Latin America

et al. 2021

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Aquaponics is a sustainable food production system combining hydroponics and aquaculture. Although the domestic/small-scale aquaponic production has proliferated worldwide, there is scarce knowledge about how it is performed. The objective of this study was to determine the profile and motivations of aquaponic producers, the characteristics of the facilities and the performance of the production. The average aquaponic producer is a middle-aged man, with a certain level of studies and a moderate household income. The main motivations reported were the production of high-quality, healthy food, the concern for the environment and the autonomy gained. These motivations conditioned the purposes of the aquaponic facilities (mainly education, production of food for self-consumption and as a hobby), which, excepting small sales, did not have an economic motive. Due to their characteristics, aquaponic facilities are particularly adapted for urban agriculture (many of them were located on rooftops) and most of those studied were constructed recently. The nutrient film technique was the most used hydroponic subsystem, followed by media beds, where mostly a polyculture of leaf and fruit vegetables and aromatics are produced. Tilapia was the most common fish species used. In general, there is a lack of proper knowledge and expertise about these complex systems in order to efficiently operate them.

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Aquaponics for resource recovery and organic food productions

Cited by 7 publications

References 41 publications

Towards a Cross-Sectoral View of Nature-Based Solutions for Enabling Circular Cities

Towards a Cross-Sectoral View of Nature-Based Solutions for Enabling Circular Cities

Nitrogen Recovery via Aquaponics–Bioponics: Engineering Considerations and Perspectives

Characterisation of aquaponic producers and small-scale facilities in Spain and Latin America

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