Laboratory Scale Evaluation of Fertiliser Factory Wastewater Treatment through Membrane Distillation and Reverse Osmosis

Tagliabue, Marco; Tonziello, Jacopo; Bottino, A.; Capannelli, G.; Comite, Antonio; Pagliero, Marcello; Boero, Federica; Cattaneo, Claudia

doi:10.3390/membranes11080610

Cited by 5 publications

(4 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As a further concentration step, a vacuum membrane distillation (VMD) was applied. The details of the laboratory plant for testing are reported in previously published papers [30,31]. A total of 15 hollow fiber membranes made of polypropylene (Accurel PP S6/2, Membrana, Germany) with a length of 30 cm were arranged in a module where the fiber extremities were potted with an epoxy resin in a PVC tube.…”

Section: Filtration Proceduresmentioning

confidence: 99%

Valorization and Potential Antimicrobial Use of Olive Mill Wastewater (OMW) from Italian Olive Oil Production

et al. 2022

Self Cite

View full text Add to dashboard Cite

The production of olive oil generates olive mill wastewater (OMW) which essentially derives from the processing, treatment and pressing of olives in mills. Traditional milling processes require a quantity of water varying between 40 and 120 L per quintal of pressed olives, generating a considerable amount of wastewater. It is thus necessary to reduce process water and enhance its use to implement the concept of a circular economy. To this end, our preliminary work was dedicated to water purification by means of suitable and efficient filtration systems. The microfiltered OMW was firstly concentrated through reverse osmosis. Then, an additional concentration step was carried out via vacuum membrane distillation using hydrophobic hollow fiber membranes. The application of the membrane-based processes allowed the recovery of a purified water and the concentration of valuable polyphenols in a smaller volume. The different fractions obtained from the purification have been tested for the determination of the antioxidant power (DPPH assay) and dosage of polyphenols (Folin–Ciocalteu assay) and were characterized using IR spectroscopy. All samples showed relevant antioxidant activity (percentage range: 10–80%) and total phenolic content in the 1.5–15 g GAE/L range. The obtained fractions were tested for their antimicrobial effect on numerous clinical isolates of Gram-positive and Gram-negative species, resistant and multi-resistant to current antibiotic drugs. OMW samples showed widespread activity against the considered (phyto)pathogens (MIC range 8–16 mg/mL) thus supporting the value of this waste material in the (phyto)pharmaceutical field.

show abstract

Section: Filtration Proceduresmentioning

confidence: 99%

Valorization and Potential Antimicrobial Use of Olive Mill Wastewater (OMW) from Italian Olive Oil Production

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…where m w and m d are the masses of impregnated and dry membrane, respectively; ρ oc and ρ pol are the 1-octanol density (0.83 g/cm 3 ) and the PVDF density (1.8 g/cm 3 ) at 25 • C. The infrared spectroscopy analyses were performed using a Vertex 70 (Bruker, Billerica, MA, USA) FT-IR spectrometer operated in ATR (attenuated total reflection) mode.…”

Section: Membrane Characterizationmentioning

confidence: 99%

“…In this context, membrane distillation (MD) has recently gained increasing attention because of its theoretical ability completely reject non-volatile solutes, even when treating highly concentrated feed streams such as reverse osmosis brines [1] and industrial wastewaters [2,3].…”

Section: Introductionmentioning

confidence: 99%

A Single Step Preparation of Photothermally Active Polyvinylidene Fluoride Membranes Using Triethyl Phosphate as a Green Solvent for Distillation Applications

et al. 2021

Self Cite

View full text Add to dashboard Cite

Membrane distillation is a growing technology that can address the growing problem of water shortage. The implementation of renewable energy and a reduction in the environmental impact of membrane production could improve the sustainability of this process. With this perspective, porous hydrophobic polyvinylidene fluoride (PVDF) membranes were prepared using triethyl phosphate (TEP) as a green solvent, using the non-solvent induced phase separation technique. Different amounts of carbon black were added to dope solutions to improve the photothermal properties of the membranes and to enable direct heating by solar energy. By optimizing the preparation conditions, membranes with porosity values as high as 87% were manufactured. Vacuum membrane distillation tests carried out using a concentrated NaCl solution at 50 °C showed distillate fluxes of up to 36 L/m2 h and a complete salt rejection. Some preliminary studies on the photothermal performance were also conducted and highlighted the possibility of using such membranes in a direct solar membrane distillation configuration.

show abstract

“…Many methods have been proposed to treat industrial wastewater. Tagliabue et al [25] used reverse osmosis to treat fertilizer factory wastewater with high solute content. Kang [26] used a biological method to treat wastewater from heavy crude oil recovery.…”

Section: Introductionmentioning

confidence: 99%

Efficient Industrial Wastewater and Leachate Evaporation Utilizing Heat Localization in Porous Media

Zaro,

Jones,

Languri

2023

J Energ Power Technol

View full text Add to dashboard Cite

In this paper, an efficient industrial wastewater and leachate evaporation method is proposed and tested experimentally. The goal of this study is to investigate whether the addition of a carbon foam (CF) porous layer can lead to energy savings by evaporating more water mass per unit of energy input. The standard boiling evaporator layout was redesigned by placing the heating element in the upper region of the tank and CF underneath the heat source. The CF purposed to localize the energy in an area by the water's surface and minimize conduction heat losses to the rest of the water. A 90.2% reduction in energy lost to regions outside of the CF isolated control volume, specifically during the evaporator preheating process was observed with the addition of 100 Pores Per Inch (PPI) CF. In addition, a reduction in evaporative energy intensity was observed yielding results of 3.344 , 3.441 , and 3.644 for the 100 PPI, 45 PPI, and 10 PPI tests, respectively. This new evaporation design provides a more energy- and cost-efficient method for reducing the volume of various industrial wastewater and leachate concentrations onsite.

show abstract

Laboratory Scale Evaluation of Fertiliser Factory Wastewater Treatment through Membrane Distillation and Reverse Osmosis

Cited by 5 publications

References 40 publications

Valorization and Potential Antimicrobial Use of Olive Mill Wastewater (OMW) from Italian Olive Oil Production

Valorization and Potential Antimicrobial Use of Olive Mill Wastewater (OMW) from Italian Olive Oil Production

A Single Step Preparation of Photothermally Active Polyvinylidene Fluoride Membranes Using Triethyl Phosphate as a Green Solvent for Distillation Applications

Efficient Industrial Wastewater and Leachate Evaporation Utilizing Heat Localization in Porous Media

Contact Info

Product

Resources

About