High-performance low-cost solar collectors for water treatment fabricated with recycled materials, open-source hardware and 3d-printing technologies

Martín-Sómer, Miguel; Moreno-SanSegundo, José; Álvarez-Fernández, Carmen; Grieken, Rafael van; Marugán, Javier

doi:10.1016/j.scitotenv.2021.147119

Cited by 21 publications

(14 citation statements)

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“…In their review, Balogun et al [ 22 ] detailed the application of 3D printing in the manufacture of partitions and membranes for water treatment modules. Martin-Somer et al [ 23 ] developed a high-performance and low-cost solar collector for water treatment manufactured by 3D printing technology. Moreover, Hwa et al [ 24 ] reported a porous ceramic membrane made by 3D printing technology for water filtration.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Application of Photocatalytic Composites and Water Treatment Facility Based on 3D Printing Technology

et al. 2021

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Currently, the degradation of organic pollutants in wastewater by photocatalytic technology has attracted great attention. In this study, a new type of 3D printing material with photocatalytic activity was first prepared to print a water treatment equipment, and then a layer of silver-loaded TiO2 was coated on the equipment to further improve the catalytic degradation performance. The composite filaments with a diameter of 1.75 ± 0.05 mm were prepared by a melt blending method, which contained 10 wt% of modified TiO2 and 90 wt% of PLA. The silver-loaded TiO2 was uniformly coated on the equipment through a UV-curing method. The final results showed that those modified particles were uniformly dispersed in the PLA matrix. The stable printing composite filaments could be produced when 10 wt% TiO2 was added to the PLA matrix. Moreover, the photocatalytic degradation performance could be effectively improved after 5 wt% of silver loading was added. This novel facility showed good degradability of organic compounds in wastewater and bactericidal effect, which had potential applications for the drinking water treatment in the future.

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Section: Introductionmentioning

confidence: 99%

Fabrication and Application of Photocatalytic Composites and Water Treatment Facility Based on 3D Printing Technology

et al. 2021

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“…The latter is usually considered to be prohibitively expensive for adoption at the household level [ 107 , 108 , 109 ]. However, high-performance, low-cost solar collectors fabricated with recycled materials, open-source hardware, and 3D-printing technologies have been developed [ 110 ].…”

Section: Sodis: Variablesmentioning

confidence: 99%

Solar Water Disinfection to Produce Safe Drinking Water: A Review of Parameters, Enhancements, and Modelling Approaches to Make SODIS Faster and Safer

et al. 2021

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Solar water disinfection (SODIS) is one the cheapest and most suitable treatments to produce safe drinking water at the household level in resource-poor settings. This review introduces the main parameters that influence the SODIS process and how new enhancements and modelling approaches can overcome some of the current drawbacks that limit its widespread adoption. Increasing the container volume can decrease the recontamination risk caused by handling several 2 L bottles. Using container materials other than polyethylene terephthalate (PET) significantly increases the efficiency of inactivation of viruses and protozoa. In addition, an overestimation of the solar exposure time is usually recommended since the process success is often influenced by many factors beyond the control of the SODIS-user. The development of accurate kinetic models is crucial for ensuring the production of safe drinking water. This work attempts to review the relevant knowledge about the impact of the SODIS variables and the techniques used to develop kinetic models described in the literature. In addition to the type and concentration of pathogens in the untreated water, an ideal kinetic model should consider all critical factors affecting the efficiency of the process, such as intensity, spectral distribution of the solar radiation, container-wall transmission spectra, ageing of the SODIS reactor material, and chemical composition of the water, since the substances in the water can play a critical role as radiation attenuators and/or sensitisers triggering the inactivation process.

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“…A beaker containing 50 mL of the sample to be treated was placed under the irradiation source, and it was stirred magnetically. For photodegradation using solar light, an Original Hanau Suntest (Hanau, Germany) was used (the actual photon flux in the reaction beaker: 1.4 × 10 17 photons s −1 , which was measured by actinometry using ferrioxalate) [31]. For the treatment of the pollutants using UVC light, we used a homemade reflective reactor covered inside with aluminum foils and equipped with an Osram Puritec (HNS G5, 8W) lamp (Wilmington, MA, USA), having the main emission peak at 254 nm (the actual photon flux in the reaction beaker was 3.2 × 10 16 photons s −1 ; this was also determined by actinometry using ferrioxalate) [31].…”

Section: Reaction Systemsmentioning

confidence: 99%

“…For photodegradation using solar light, an Original Hanau Suntest (Hanau, Germany) was used (the actual photon flux in the reaction beaker: 1.4 × 10 17 photons s −1 , which was measured by actinometry using ferrioxalate) [31]. For the treatment of the pollutants using UVC light, we used a homemade reflective reactor covered inside with aluminum foils and equipped with an Osram Puritec (HNS G5, 8W) lamp (Wilmington, MA, USA), having the main emission peak at 254 nm (the actual photon flux in the reaction beaker was 3.2 × 10 16 photons s −1 ; this was also determined by actinometry using ferrioxalate) [31]. As the main focus of our work was on the comprehension of fundamental aspects, the degradations of the antibiotics and their ferric complexes were performed in deionized water.…”

Section: Reaction Systemsmentioning

confidence: 99%

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Understanding the Role of Complexation of Fluoroquinolone and β-Lactam Antibiotics with Iron (III) on the Photodegradation under Solar Light and UVC Light

Serna-Galvis

Martínez-Mena

Porras

et al. 2021

Water

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Antibiotics elimination by some photochemical processes involves ferric ions, but little is discussed about the fundamental aspects of complexation effects on their degradation. This study compares the photodegradation of two fluoroquinolones, three β-lactams, and their ferric complexes in deionized water. The complexed antibiotics were more recalcitrant than the free antibiotics to the solar light action (the photodegradation rate constants diminished by more than 50%). To better study the photodegradation, other experiments considering two representative cases (ciprofloxacin and dicloxacillin) were performed. For ciprofloxacin, as the iron amount was increased from 0 to 7.5 µmol L−1, its photodegradation rate constant decreased from 0.017 to 0.004 min−1. In contrast, for dicloxacillin, the increase in iron concentration (from 0 to 7.5 µmol L−1) accelerated its photodegradation (the rate constant augmented from 0 to 0.0026 min−1). When UVC light was used, the degradations of free and complexed antibiotics were very close, exhibiting values of degradation rate constants between 0.030 and 0.085 min−1. The antimicrobial activity (AA) was eliminated when 90% of ciprofloxacin and 90–95% of dicloxacillin were degraded. The AA removal was associated with structural changes in relevant moieties of antibiotics, such as fluorine and piperazyl ring for ciprofloxacin, or β-lactam ring for dicloxacillin.

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High-performance low-cost solar collectors for water treatment fabricated with recycled materials, open-source hardware and 3d-printing technologies

Cited by 21 publications

References 21 publications

Fabrication and Application of Photocatalytic Composites and Water Treatment Facility Based on 3D Printing Technology

Fabrication and Application of Photocatalytic Composites and Water Treatment Facility Based on 3D Printing Technology

Solar Water Disinfection to Produce Safe Drinking Water: A Review of Parameters, Enhancements, and Modelling Approaches to Make SODIS Faster and Safer

Understanding the Role of Complexation of Fluoroquinolone and β-Lactam Antibiotics with Iron (III) on the Photodegradation under Solar Light and UVC Light

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