Ultrafiltration as an advanced tertiary treatment of anaerobically digested swine manure liquid fraction: A practical and theoretical study

Fernández, Raquel López; Aristizábal, Carolina; Irusta, R.

doi:10.1016/j.memsci.2011.03.051

Cited by 23 publications

(14 citation statements)

References 17 publications

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“…Similarly to MF, the flux through the UF PVDF membrane (150 kDa) decreased by 29% from 7.5 to 6.0 l•m -2• h -1 within the first 8 h until it became relatively stable. The obtained permeate fluxes are lower than those previously reported for both undigested and digested manure, namely 15-20 l•m -2• h -1 and 20 l•m -2• h -1 , respectively [37,38].…”

Section: Feed Solutions 311 Manure Pretreatment With Mf and Ufcontrasting

confidence: 76%

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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Section: Feed Solutions 311 Manure Pretreatment With Mf and Ufcontrasting

confidence: 76%

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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“…Since a wide range of animal waste treatment based on the experience in treating other concentrated industrial waste were applied in pig slurry treatment the engineered animal waste treatment systems require reclamation of chemical and biologically safe nutrient-rich solids, processed water, biogas for energy, and reduction of odor. To address this requirement, many researchers focused on developing efficient unit processes for alternative treat-ment schemes instead of traditional methods [2][3][4][5]. The most recent approach includes integrated microalgal culture system to treat livestock wastewater which is an efficient implication to reduce the cost of biodiesel production and provide an environmental benefit of microalgal bioremediation [34].…”

Section: Introductionmentioning

confidence: 99%

“…Superficial velocity in EGSB is higher than in UASB due to a high height to diameter ratio and a high recirculation rate. Consequently, these characteristics improve the mixing and the contact between the wastewater and the sludge in the EGSB reactor [3,11,12].…”

Section: Introductionmentioning

confidence: 99%

Waste treatment with the pilot scale ATAD and EGSB pig slurry management system followed by sequencing batch treatment

Lee

Han

2015

Environmental Engineering Research

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Experiments for highly concentrated contaminants in pig waste slurry were carried out for the feasibility test of a pilot-scale innovative process scheme of engaging autothermal thermophilic aerobic digestion (ATAD) and expended granular sludge bed (EGSB) followed by sequencing batch reactor (SBR) system. Contaminants in pig waste slurry such as organic substance, total nitrogen (TN), ammonia nitrogen and total phosphorus (TP) contents were successfully reduced in the system. Total volatile solids (TVS) and chemical oxygen demands (COD) for organic matter in the feed were 32.92 g/L and 42.55 g/L respectively, and they were reduced by about 98.7% and 99.2%, respectively in the system. The overall removal efficiencies for TN and ammonium nitrogen were found to be 98.1 and 98.5%, respectively. The overall removal efficiency for total phosphorus was also found to be 92.5%. Faecal coliform density was reduced to < 1.2×10 4 CFU/g total solids. Biogas and CH4 were produced in the range of 0.39-0.85 and 0.25-0.62 m 3 /kg [VS removed], respectively. The biogas produced in the system comprised of 295±26 ppm (v/v) [H2S].

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“…As large centralized livestock production leads to large production of manure, centralized biogas production by anaerobic digestion is of growing interest as a green energy solution in areas with industrialized livestock production. Anaerobic digestion stabilizes and converts about 20-25% of the organic matter present in animal manure into biogas; it is considered a reliable source of bioenergy and it minimizes greenhouse gas (GHG) emissions and odors [2][3][4]. Anaerobic digestion mineralizes some of the organic nitrogen and increases the NH 3 /NH 4 + content by about 15%.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have already proved that membrane separation is suitable for concentrating digestate liquid fractions [2,[10][11][12]. Microfiltration has proved to be a reliable technique for treating digestate liquid fractions and removing suspended solids from the liquid stream [10].…”

Section: Introductionmentioning

confidence: 99%

Microfiltration and ultrafiltration as a post-treatment of biogas plant digestates for producing concentrated fertilizers

Rumbau

Norddahl

Wei³

et al. 2014

Desalination and Water Treatment

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Biogas plant digestate liquid fractions from biogas plants can be concentrated by microfiltration and ultrafiltration. Two types of microfiltration membranes (polysulphone (PS) and surface modified polyvinylidene fluoride (PVDF)) were used to process digestate liquid fractions, and to assess their applicability in the recovery of particulate phosphorus compared to an ultrafiltration membrane (polyethersulphone (PES)). Results show that membrane material, operational conditions and pore diameter influenced the permeate flux pattern during microfiltration. The PS membranes initially had a higher tendency to foul than PVDF membranes. However, during the filtration process, as fouling built up, the permeate flux behaviour of the two membranes became very similar. During the concentration of digestate liquid fractions, the microfiltration PS membrane and the ultrafiltration 19 PES membrane achieved the highest phosphorus rejection (80 % w/w.), suggesting that there was a 20 correlation between the membrane material and both the fouling trend and phosphorus rejection. A 21 two-step basic-acidic cleaning was unable to recover the initial water flux for the fouled 22 microfiltration membranes. In conclusion, the PS microfiltration membranes might be a good 23 strategy for recovering phosphorus from digestate liquid fractions. Further research leading to 24 2 adequate cleaning procedures for microfiltration PS and PVDF membranes treating digestate liquid fractions though are needed.

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Ultrafiltration as an advanced tertiary treatment of anaerobically digested swine manure liquid fraction: A practical and theoretical study

Cited by 23 publications

References 17 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

Waste treatment with the pilot scale ATAD and EGSB pig slurry management system followed by sequencing batch treatment

Microfiltration and ultrafiltration as a post-treatment of biogas plant digestates for producing concentrated fertilizers

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