Impact of characteristic membrane parameters on the transfer rate of ammonia in membrane contactor application

Lauterböck, B.; Moder, Karl; Germ, T.; Fuchs, Werner

doi:10.1016/j.seppur.2013.06.010

Cited by 36 publications

(13 citation statements)

References 22 publications

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“…The performance of membrane distillation is influenced by membrane thickness, membrane porosity, mean pore size and membrane morphology [44][45][46][47][48].…”

Section: Influence Of Membrane and Feed Characteristics On MD Performmentioning

confidence: 99%

Fouling mitigation in membrane distillation processes during ammonia stripping from pig manure

Zarebska

Amor

Ciurkot

et al. 2015

Journal of Membrane Science

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Over time fouling leads to membrane wetting. This is the biggest obstacle to widespread use of membrane distillation (MD) for ammonia removal from animal slurry. Feed pretreatment and cleaning strategies of membrane surfaces are the most common methods to prevent or diminish fouling phenomena. This study investigates preliminary fouling of polypropylene (PP), and polytetrafluoroethylene (PTFE) membranes. A model manure solution was used as feed. In addition, cleaning efficiencies with deionized water, NaOH/citric acid, and Novadan agents were studied. Further microfiltration and ultrafiltration were examined as manure pretreatment to diminish fouling. To this end polyvinylidene fluoride membranes (PVDF 0.2 µm and 150 kDa respectively) were used. Organic fouling was shown to be dominant. For the model manure solution, the fouling comprised lipids, carbohydrates and proteins. For pig slurry the fouling additionally contained carboxylates, free fatty acids and lignin. Among the tested cleaning strategies, Novadan agents were the most successful in removing proteins and carbohydrates from the PTFE membrane while it only removed proteins from the PP membrane. Using microfiltration or ultrafiltration as a pretreatment prior to MD doubled the ammonia mass transfer coefficient for the PTFE membrane, while for the PP membrane, the ammonia mass transfer coefficient was increased 4-fold.

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“…The performance of membrane distillation is influenced by membrane thickness, membrane porosity, mean pore size and membrane morphology [44][45][46][47][48].…”

Section: Influence Of Membrane and Feed Characteristics On MD Performmentioning

confidence: 99%

Fouling mitigation in membrane distillation processes during ammonia stripping from pig manure

Zarebska

Amor

Ciurkot

et al. 2015

Journal of Membrane Science

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“…However, the membrane parameters (such as bubble point, breakthrough pressure, airflow, pore size, contact angle, thickness, etc.) must be evaluated to predict the performance process [21]. As concerns the membrane processes, an innovative solution based on a thermophilic aerobic membrane reactor for the treatment of sewage sludge and high strength aqueous waste [22] is able to increase the ammonia content in permeate and the precipitation of nutrients (nitrogen and phosphorus) in the form of salts.…”

Section: Introductionmentioning

confidence: 99%

The Valorization of Ammonia in Manure Digestate by Means of Alternative Stripping Reactors

et al. 2018

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The proper recovery of resources such as nitrogen and phosphorus present in the manure from intensive livestock farming is essential in order to allow environmental sustainable zootechny especially in densely populated areas where these activities are historically prevalent. The experiences at full-scale established that the ammonia stripping allows recovery from 35% to 50% of nitrogen depending on the type of substrate treated with anaerobic digestion and on the nitrogen content/form in the digestate. This study focuses on the ammonia stripping on digestate derived from anaerobic digestion of livestock manure and corn silage. Two different full-scale plants are studied including a packed column and an air bubble reactor without filling material with the aim to reduce fouling issues due to the content of suspended solids in digestate. The main results suggest that the use of an air bubble reactor could treat digestate with high concentration of suspended solids. A deeper study based on a two-level factorial experiment highlights that the temperature is an important parameter that influences the ammonia removal yields. Thus, a proper management of available thermal energy is very important.

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“…The difference in the NH 3 partial pressure between the two liquid phases is the driving force for the mass transfer. Hollow fiber membrane contactors have been used to remove NH 3 from anaerobic digestate [109] and also directly from an operating AD reactor [110].…”

Section: Membrane Separationmentioning

confidence: 99%

Nutrient recovery technologies for anaerobic digestion systems: An overview

Romero-Güiza

Mata‐Alvarez

Rivera

et al. 2016

rev.ion

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Impact of characteristic membrane parameters on the transfer rate of ammonia in membrane contactor application

Cited by 36 publications

References 22 publications

Fouling mitigation in membrane distillation processes during ammonia stripping from pig manure

Fouling mitigation in membrane distillation processes during ammonia stripping from pig manure

The Valorization of Ammonia in Manure Digestate by Means of Alternative Stripping Reactors

Nutrient recovery technologies for anaerobic digestion systems: An overview

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