Pressure-driven membrane processes for boron and arsenic removal: pH and synergistic effects

Regis, Aina Orell; Vanneste, Johan; Acker, Sarah; Martínez, Gisella; Ticona, Juana; García, Vilma; Alejo, Francisco; Zea, Julia; Krahenbuhl, Richard; Vanzin, Gary; Sharp, Jonathan O.

doi:10.1016/j.desal.2021.115441

Cited by 24 publications

(10 citation statements)

References 46 publications

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“…For example, Tejada-Meza et al [ 109 ] recently documented high tannery-derived metal contents in surface waters draining directly into the Chili River (Arequipa Region), whose waters are used to irrigate thousands of hectares of agricultural crops. Additionally, mining and other human activities could affect metal concentrations in river waters used to irrigate agricultural fields in this arid region of Peru (e.g., [ 110 ]), not mentioning that rivers in this part of the Andes naturally contain metals (e.g., [ 111 ]); for example, Regis et al [ 112 ] reported high As concentrations in the Tambo river (Arequipa Region), and such metal has been reported in many food/medicinal products in that same region ( Table S4 ). Whatever the origin of the metal pollution is, the safest and most appropriate way to deal with this growing problem (metal bioaccumulation in plant-based food/medicinal products) is to treat polluted river waters before they are used for irrigation purposes, as suggested by Thomas et al [ 113 ] to decrease Cd concentrations in Peruvian cacao beans.…”

Section: Findings and Discussionmentioning

confidence: 99%

Heavy Metal Bioaccumulation in Peruvian Food and Medicinal Products

Tejada-Purizaca,

Garcia-Chevesich,

Ticona-Quea

et al. 2024

Foods

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To better query regional sources of metal(loid) exposure in an under-communicated region, available scientific literature from 50 national universities (undergraduate and graduate theses and dissertations), peer-reviewed journals, and reports published in Spanish and English were synthesized with a focus on metal(loid) bioaccumulation in Peruvian food and medicinal products utilized locally. The study considered 16 metal(loid)s that are known to exert toxic impacts on humans (Hg, Al, Sb, As, Ba, Be, Cd, Cr, Sn, Ni, Ag, Pb, Se, Tl, Ti, and U). A total of 1907 individual analyses contained within 231 scientific publications largely conducted by Peruvian universities were analyzed. These analyses encompassed 239 reported species classified into five main food/medicinal groups—plants, fish, macroinvertebrates and mollusks, mammals, and “others” category. Our benchmark for comparison was the World Health Organization (Codex Alimentarius) standards. The organisms most frequently investigated included plants such as asparagus, corn, cacao, and rice; fish varieties like trout, tuna, and catfish; macroinvertebrates and mollusks including crab and shrimp; mammals such as alpaca, cow, chicken eggs, and milk; and other categories represented by propolis, honey, lichen, and edible frog. Bioaccumulation-related research increased from 2 to more than 25 publications per year between 2006 and 2022. The results indicate that Peruvian food and natural medicinal products can have dangerous levels of metal(loid)s, which can cause health problems for consumers. Many common and uncommon food/medicinal products and harmful metals identified in this analysis are not regulated on the WHO’s advisory lists, suggesting the urgent need for stronger regulations to ensure public safety. In general, Cd and Pb are the metals that violated WHO standards the most, although commonly non-WHO regulated metals such as Hg, Al, As, Cr, and Ni are also a concern. Metal concentrations found in Peru are on many occasions much higher than what has been reported elsewhere. We conclude that determining the safety of food/medicinal products is challenging due to varying metal concentrations that are influenced not only by metal type but also geographical location. Given the scarcity of research findings in many regions of Peru, urgent attention is required to address this critical knowledge gap and implement effective regulatory measures to protect public health.

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Section: Findings and Discussionmentioning

confidence: 99%

Heavy Metal Bioaccumulation in Peruvian Food and Medicinal Products

Tejada-Purizaca,

Garcia-Chevesich,

Ticona-Quea

et al. 2024

Foods

Self Cite

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“…The presence of a ZIF-8 membrane enables freely moving water molecules, leading to increased permeability. Regis et al 166 explaining the effect of pH on the separation of boron (B)- and arsenic (As)-based samples using a pressure-driven membrane, it was also observed that in the presence of B, the As separation efficiency increased. Furthermore, he concluded that the developed membrane can be used for seawater desalination by optimizing the pressure and pH of a solution.…”

Section: D/3d Mofs For Water Purification and Desalination Applicationsmentioning

confidence: 99%

Recent progress in 2D and 3D metal–organic framework-based membranes for water sustainability

Banglani,

Chandio,

Ali

et al. 2024

Environ. Sci.: Water Res. Technol.

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“…In several volcanically active regions, such as southern Peru, the presence of arsenic is associated with high boron concentrations [ 89 ]. Higher arsenic and boron removal is obtained by an increase in pH.…”

Section: Removal Of Specific Compounds In Natural Watermentioning

confidence: 99%

Classical and Recent Developments of Membrane Processes for Desalination and Natural Water Treatment

Charcosset

2022

Membranes

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Water supply and water treatment are of major concern all around the world. In this respect, membrane processes are increasingly used and reported for a large range of applications. Desalination processes by membranes are well-established technologies with many desalination plants implemented in coastal areas. Natural water treatment is also well implemented to provide purified water for growing population. This review covers various aspects of desalination: membranes and modules, plants, fouling (scaling, biofouling, algal blooms), cleaning, pretreatment (conventional and membrane treatments), energy and environmental issues, renewable energies, boron removal and brine disposal. Treatment of natural water focuses on removal of natural organic matter, arsenic, iron, nitrate, fluoride, pesticides and herbicides, pharmaceutical and personal care products. This review underlines that desalination and natural water treatment require identical knowledge of membrane fouling, construction of large plants, cleaning procedures, energy and environmental issues, and that these two different fields can learn from each other.

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Pressure-driven membrane processes for boron and arsenic removal: pH and synergistic effects

Cited by 24 publications

References 46 publications

Heavy Metal Bioaccumulation in Peruvian Food and Medicinal Products

Heavy Metal Bioaccumulation in Peruvian Food and Medicinal Products

Recent progress in 2D and 3D metal–organic framework-based membranes for water sustainability

Classical and Recent Developments of Membrane Processes for Desalination and Natural Water Treatment

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