Modelling phosphorus removal efficiency of a reactive filter treating agricultural tile drainage water

Pugliese, Lorenzo; Biase, Michele De; Chidichimo, Francesco; Heckrath, G.; Iversen, Bo V.; Kjærgaard, Charlotte; Straface, Salvatore

doi:10.1016/j.ecoleng.2020.105968

Cited by 12 publications

(6 citation statements)

References 36 publications

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“…The high quantities of COD and BOD present in OMWs constitute a major problem, both for disposal and for the recovery of polyphenols, which would become much easier if the large percentage of suspended mucilage had been preliminarily separated. The adoption of a staged filtering process for OMW purification therefore appears very promising, using filtration methodologies which are notoriously cost-effective technologies for removing dissolved and suspended elements from water [10,11].…”

Section: Introductionmentioning

confidence: 99%

A New Approach for Bioremediation of Olive Mill Wastewaters: Combination of Straw Filtration and Nanofiltration

Chidichimo,

Basile,

Conidi

et al. 2024

Membranes

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A combination of straw filtration and nanofiltration was investigated for the first time as a sustainable approach aimed at valorizing olive mill wastewaters (OMWs) within a circular economy strategy. Ground straw filters with different granulometry (120, 250 and 500 μm) were tested in the first step to clarify the raw wastewater. The 500 μm filter offered the best performance due to a lower exposed surface of the filtering fibers and a shorter filtering time, allowing us to reduce about 70% of the chemical oxygen demand (COD) of the raw wastewater. Three different commercial membranes in a flat-sheet configuration with a molecular weight cut-off (MWCO) in the range 150–500 Da were tested to fractionate the clarified wastewater according to a dead-end configuration. Among the investigated membranes, a polymeric membrane of 500 Da (NFA-12A) exhibited the highest productivity in selected operating conditions (steady-state values of 11.4 L/m2 h at 20 bar and 24 ± 2 °C). In addition, flux decays for this membrane were lower than the other two tested membranes, indicating a lower propensity to fouling phenomena. Higher rejections towards total polyphenols and total antioxidant activity (TAA) (76.6% and 73.2%, respectively) were also observed for this membrane. Flavanols and hydroxycinnamic acids were retained by more than 99%. The combination of straw filtration and NF with the NFA-12A membrane allowed us to reduce the COD of raw OMWs up to 97.6%. The retentate fraction of this membrane exhibited a TAA of 18.9 ± 0.7 mM Trolox, supporting its propensity for the development of innovative formulations of interest in food and nutraceutical applications.

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Section: Introductionmentioning

confidence: 99%

A New Approach for Bioremediation of Olive Mill Wastewaters: Combination of Straw Filtration and Nanofiltration

Chidichimo,

Basile,

Conidi

et al. 2024

Membranes

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“…Porous metal membranes are sort of inorganic membranes with superior properties of the outstanding mechanical durability, corrosion resistance, withstanding high temperatures and high pressures, easily-welded and sealed and long service life [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Since intermetallic compound has a series of superior chemical, physical, and mechanical properties, recent years it attracts lots of attentions to researchers in the areas of porous metallic membranes [19][20][21][22][23][24]. Basing on mechanisms of preparation and pore formation, four common methods of porous intermetallic compounds were summarized and reviewed by Jiang Yao [6]: (1) sintering preparation based on physical process mechanism of pore formation; (2) violent reaction process to form pores; (3) the formation of Kirkendall pores; (4) the pore formation by phase transition process.…”

Section: Introductionmentioning

confidence: 99%

Effects of Fe doping on preparation of Ti-Si porous membrane via in-situ reactive process

Liu

Zhao

et al. 2023

Preprint

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Asymmetric porous filter element can reach a high filtering accuracy with larger filtration flux, which can enhance the filtration efficiency and reduce the energy consumption when it was applied in separation equipment. A novel porous material of Ti-Si intermetallic compound micro-porous membrane was successfully synthesized with Fe doped Ti mixed powder and SiO2 by the in-situ reactive sintering process. Effects of Fe doping, sintering temperature and the external load pressure on the formation of membrane were systemically studied. The results show that increasing Fe doping amount can celebrate the in-situ reactive process and promote the membrane formation. The synthesized granules on the membrane are well distributed with the size of 1∼3 µm, and the thickness of the membranes is 4∼7 µm. The relative air permeability coefficient of porous membrane reduces raptly with increasing either Fe doping amount, or sintering temperature and the external load pressure. All synthesized membranes show the presence of Ti5Si3 and Ti phases, with a little amount phase of FeTi and FeO. The membrane formation mechanism is due to the large reduction reactivity of Fe doped Ti powder with SiO2, and the asymmetric porous structure of Ti5Si3/Ti was obtained finally.

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“…Furthermore, many recent studies are focusing on the lter systems themselves, investigating the possibility of using natural polymers and eco-friendly materials to replace synthetic ones, in order to reach both comparable remediation efficiencies against several pollutant and plastic waste reduction at the end of their life cycle. [17][18][19][20][21] This review presents recent advances in understanding the impacts of MP on the environment and humans as well as the current state of the art on developing appropriate removal technologies. For this purpose, the major sources of MP pollution and their classication are reported.…”

Section: Introductionmentioning

confidence: 99%

Microplastics in aquatic systems, a comprehensive review: origination, accumulation, impact, and removal technologies

et al. 2022

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Modelling phosphorus removal efficiency of a reactive filter treating agricultural tile drainage water

Cited by 12 publications

References 36 publications

A New Approach for Bioremediation of Olive Mill Wastewaters: Combination of Straw Filtration and Nanofiltration

A New Approach for Bioremediation of Olive Mill Wastewaters: Combination of Straw Filtration and Nanofiltration

Effects of Fe doping on preparation of Ti-Si porous membrane via in-situ reactive process

Microplastics in aquatic systems, a comprehensive review: origination, accumulation, impact, and removal technologies

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