Combined adsorption and degradation of the off-flavor compound 2-methylisoborneol in sludge derived from a recirculating aquaculture system

Azaria, Snir; Nir, Shlomo; Rijn, Jaap van

doi:10.1016/j.chemosphere.2016.11.051

Cited by 21 publications

(13 citation statements)

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“…Authors suggested that lower GSM and MIB levels reflect a reduction of these compounds in anaerobic compartments. The importance of submerged aerobic RAS parts in GSM and MIB production has been supported by Guttman and van Rijn (), Ma, Luo, Tan, Li, and Wang () and most recently by Azaria, Nir, and van Rijn ().…”

Section: Origin Of Off‐flavoursmentioning

confidence: 85%

“…There are a number of treatment methods developed and employed for the removal of GSM and MIB from water (e.g., Azaria et al, ; Liu et al, ). The traditional water treatment processes (coagulation, sedimentation and filtration) are not sufficient to remove these compounds (Watson & Ridal, ; Zoschke, Dietrich, Börnick, & Worch, ).…”

Section: Removal Of Off‐flavours In Rasmentioning

confidence: 99%

“…Guttman and van Rijn, () reported a 89% removal of GSM and 71% of MIB after 2 days and achieved a complete removal (initial levels between 10–250 000 ng/L in water) after 9 days. Additionally, MIB can be removed from the liquid phase in the presence of sludge by adsorption and biological processes (Azaria et al, ). Adsorption, however, is reversible by heating and at 65°C, 42% of adsorbed MIB is released (Azaria et al, ).…”

Section: Removal Of Off‐flavours In Rasmentioning

confidence: 99%

“…Additionally, MIB can be removed from the liquid phase in the presence of sludge by adsorption and biological processes (Azaria et al, ). Adsorption, however, is reversible by heating and at 65°C, 42% of adsorbed MIB is released (Azaria et al, ). Gradually, MIB degrades by bacterial degradation and the removal of MIB in sludge derived from RAS is mediated by adsorption and degradation processes.…”

Section: Removal Of Off‐flavours In Rasmentioning

confidence: 99%

“…Gradually, MIB degrades by bacterial degradation and the removal of MIB in sludge derived from RAS is mediated by adsorption and degradation processes. 2‐methylisoborneol removal by biodegradation progressively increases the MIB removal by adsorption (Azaria et al, ). However, biological methods to degrade GSM and MIB have not so far been applied in commercial RAS farms.…”

Section: Removal Of Off‐flavours In Rasmentioning

confidence: 99%

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Controlling of geosmin and 2‐methylisoborneol induced off‐flavours in recirculating aquaculture system farmed fish—A review

Lindholm‐Lehto

Vielma

2018

Aquac Res

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Recirculating aquaculture system (RAS) is an increasingly popular alternative to open aquaculture production systems. However, off-flavours and odours can accumulate in the fish flesh from the circulating water and decrease the fish meat quality. Offflavours are typically caused by geosmin (GSM) and 2-methylisoborneol (MIB) that are lipophilic compounds formed as secondary by-products of bacterial metabolism.Even though GSM and MIB are not toxic, they often are disliked by consumers, and both have very low human sensory detection limits. Multiple methods have been suggested to remove or decrease GSM and MIB in fish, including ozonation, advanced oxidation processes (AOP)s and adsorption removal from water using activated carbon and/or zeolites. So far, purging with fresh water is the only efficient method available to remove the off-flavours. There are multiple analytical methods available for the extraction and separation of GSM and MIB from fish flesh and water. This review discusses the current knowledge of GSM and MIB formation, the challenges faced by RAS farms due to these compounds and process solutions available for their removal. K E Y W O R D S2-methylisoborneol (MIB), geosmin (GSM), off-flavours, purging

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Section: Origin Of Off‐flavoursmentioning

confidence: 85%