aquaculture system Articles | Agriculture XPRT

CO2 Removal and Stripping Column Ventilation Rate at Bell Aquaculture

Monitoring and controlling CO2 level in Recirculating Aquaculture Systems (RAS) is crucial not only for fish health but it is used increasingly for efficient management. Under supervision of Steve Summerfelt, a joint project has studied costs savings with optimizing ventilation based on CO2 continuous monitoring. The CO2 probe used in that project came from ...

Jul. 15, 2015

By Franatech GmbH

Bioeconomic modelling and salmon aquaculture: an overview of the literature

Bioeconomic models can be used to assist producers and decision-makers in identifying optimal production system designs, operation management strategies, and alternative development and policy approaches. This paper reviews the literature on bioeconomic modelling in aquaculture since 1993 and builds on an earlier article by Leung (1994) which examines this literature for the 1974-1993 period. In ...

Sep. 30, 2008

By Inderscience Publishers

Simulations of nutrient emissions from a net cage aquaculture system in a Brazilian bay

Hydrodynamics and transport simulations were conducted with the modeling software TELEMAC-2D on Icó-Mandantes bay, a branch of the Itaparica reservoir. The bay has a maximal operational water level amplitude of 5 m and is suffering from eutrophication and algae bloom. Therefore, we investigated low and high water level scenarios with two different high resolution meshes, with the purpose to ...

Feb. 24, 2016

By IWA Publishing

Cultivation of microalgae (<italic>Oscillatoria okeni</italic> and <italic>Chlorella vulgaris</italic>) using tilapia-pond effluent and a comparison of their biomass removal efficiency

Cultivation of microalgae (Oscillatoria okeni and Chlorella vulgaris) using tilapia-pond effluent and a comparison of their biomass removal efficiency

The uptake of dissolved nutrients by microalgae is the primary way to remove nitrogen in aquaculture systems. Many authors have studied the use of microalgae to treat wastewater from aquaculture. However, excessive microalgae accumulation may cause high levels of organic matter and suspended solids in the final effluent. Thus, an efficient way to remove excess algae is needed in wastewater ...

Nov. 19, 2012

By IWA Publishing

Carbon footprint of aquaculture in eastern India

The present study was conducted to determine the carbon (C) footprint of different aquaculture production systems in India. The total input (kg CE/ha) in different cultures, respectively, was 1,811 to 4,144 for scampi, 4,417 to 5,913 for polyculture, 4,090 to 8,873 for shrimp and 2,417 to 2,786 for carp. Of the total inputs, feed accounts for around 90% of carbon equivalent (CE), in all ...

Dec. 12, 2013

By IWA Publishing

Biological water treatment in aquaculture by means of “Mutag BioChip™ RAS Process“

Aquaculture or fish farming means the artificial breeding and raising of aquatic creatures. They include fish as well as crustaceans and shellfish, which are raised and stocked under controlled conditions by using techniques and technologies offering an increased level of productivity which cannot be realized under natural conditions. Due to the increased demand for freshly caught fish and ...

Aug. 4, 2016

By Multi Umwelttechnologie AG

Aquaculture and sustainable development: a regulatory or governance system?

Governance is defined as a process allowing actors to contextualise the regulatory system and, as a result, to transform sustainable development (SD) into an instrument of action. It will be all the easier for actors to familiarise themselves with SD and its implementation measures if these measures are similar to their representation on SD and its consequences on their activity and social life. ...

Jun. 17, 2009

By Inderscience Publishers

Water budgets for freshwater fish ponds of Andhra Pradesh, Orissa and West Bengal, India

The water budgets for some aquaculture systems in three states viz. Andhra Pradesh, Orissa and West Bengal were determined in the present study. The average evaporation and seepage loss from the aquaculture ponds throughout the year in Cuttack, Kendrapara, Jajpur, and Puri districts of Orissa were 164 ± 8.3 and 73 ± 16.5 cm, respectively; 152 ± 10 and 90 ± 16 cm, respectively, in South and ...

Nov. 14, 2016

By IWA Publishing

Pilot scale testing of advanced oxidation processes for degradation of geosmin and MIB in recirculated aquaculture

The presence of geosmin and 2-methylisoborneol (MIB) in recirculated aquaculture systems has a significant negative impact on the fish production due to poor flavour quality of produced fish and increased risk of rejection by fish processers. Advanced Oxidation Processes has a high potential for removal of geosmin and MIB in water and in this study UV/H2O2 and UV/O3 has been tested in pilot scale ...

Mar. 31, 2010

By IWA Publishing

Modifications of macrobenthos assemblages on land–based fish farm phytotreatment basins in the Orbetello lagoon

In the Orbetello lagoon basin there are some intensive land–based fish–farming facilities which contribute to cause a significant cyclic development of the opportunistic chorophycea Ulva laetevirens, and consequent serious decay events in spring and summer. To minimise the nutrients' impact, fish farming was supplied with phytotreatment system. The purpose of this study was to ...

Feb. 8, 2015

By Inderscience Publishers

Model of an aquaponic system for minimised water, energy and nitrogen requirements

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 ...

Mar. 23, 2016

By IWA Publishing

Open sea-based Aquaculture case study

Salmon farming is a multi-billion dollar global industry facing considerable difficulties posed by growing pressure from environmental regulatory bodies. Because marine organisms grow on and “foul” synthetic nets, oxygen available to fish is reduced and infectious diseases and parasites can spread among the fish. A test to study the reduction of fouling formation on netting of fish ...

Dec. 26, 2011

By LG Sonic

Phosphatase activity and specific methanogenic activity in an anaerobic reactor treating sludge from a brackish recirculation aquaculture system

Anaerobic treatment of high salinity sludge from marine/brackish recirculation aquaculture systems is potentially limited by inhibition of enzymatic activities and cell lysis resulting from high osmotic pressures. To further address these limitations the following investigations were conducted: effect of salinity on phosphatase activity (PA), soluble microbial products (SMP) production, and ...

Jul. 18, 2013

By IWA Publishing

Effects of different management regimes on mangrove ecosystem services in Java, Indonesia

This new report, published by Wageningen University and Wetlands International, seeks to fill a significant gap in mangrove ecosystem service estimates. While several studies have sought to measure and value the ecosystem services provided by mangrove ecosystems in general, this new piece of research has for the first time conducted separate evaluations for zones that are characterised by ...

Aug. 19, 2015

By Wetlands International

The treatment of (fish) ponds on an environmentally friendly manner with the usage of the LG Sonic case study

Aquaculture, or aqua farming, is the cultivation of aquatic organisms, such as fish or shrimps, in a controlled environment. Where this happens in a closed water container, algae may occur that pollute the water and may damage the organisms grown. Many of the traditional methods to fight algae are either insufficient, cumbersome, environmentally unfriendly, or all of these. LG Sonic uses ...

Dec. 26, 2011

By LG Sonic

Fishing for a Solution

As writer Rowan Jacobsen explores in our recent feature “Has Meat Met Its Match?,” animal agriculture’s hefty environmental footprint is creating interest in exploring ways to meet humans’ growing appetite for animal protein that extend beyond beef, chicken and pork. In some places, that ...

Jul. 31, 2014

By Ensia

MULTIHOP RADIO WITH BUILT IN I/O CONNECTS DIRECTLY TO SENSORS AND PROBES

MULTIHOP RADIO WITH BUILT IN I/O CONNECTS DIRECTLY TO SENSORS AND PROBES DX80DR radios from Banner Engineering reduce need for ancillary equipment at remote monitoring or control sites The data radio from Banner Engineering combines wireless transceiver, power supply and I/O circuits in one compact housing. The DX80DR MultiHop Radio connects sensors directly to the network, eliminating need for ...

May 16, 2013

By Banner Engineering Corp.

An Ideal Aeration System for Aquaculture Corporations - Case study

Successful aquaculture corporations know that there are many variables that need to be accounted for in order for the bottom line to be "in the black", let alone grow annually by 10-20%. Just to get started, a corporation must at least have the funding, the right location with good weather, good access to water (the list goes on) and most importantly, the right people to manage day-to-day ...

May 29, 2019

By Aeration Industries International (AII)

Scottish Sea Farms - Case Study

Addfield supply a Mobile Aquaculture machine that enables the farming of fish to be sustainable. The Challenge The challenge was to build a bespoke aquaculture incineration machine for Scottish Sea Farms Being located in Northern Scotland means that ...

Mar. 26, 2018

By Addfield Environmental Systems Ltd.

The Scoop on Shellfish Aquaculture

The centerpiece of many culinary gurus''stunning' dishes, a shellfish’s journey often begins on a farm. Found on the coastal shores or in freshwater lakes, you’ll discover suspended shellfish aquaculture systems. Fixed on ropes, plastic trays or in mesh bags, these shelled, aquatic invertebrates are raised in a controlled environment ...

Nov. 24, 2016

By Deep Trekker Inc.

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