Hydroxyapatite-Modified Zeolite for Fluoride Removal from Drinking Water: Adsorption Mechanism Investigation and Column Study

Water, Journal Year: 2025, Volume and Issue: 17(6), P. 908 - 908

Published: March 20, 2025

This study investigates the synthesis and application of hydroxyapatite (HAp)-modified zeolite materials for efficient fluoride removal from groundwater-based drinking water. Characterization confirmed successful incorporation HAp onto surface formation a stable composite. EDS analysis revealed presence Ca P after modification, while FTIR XRD structural integrity during adsorption. ZH8 exhibited highest F-removal efficiency 92.23% at pH 3, 30 °C, [F−] = 6 ppm dose 10 g/L. Meanwhile, HAp-modified showed high F-selectivity, competing ions had limited interference. The Langmuir model best described adsorption process, suggesting monolayer with maximum capacity 39.38 mg/g ZH8. process followed pseudo-first-order kinetics, equilibrium achieved within 4 h. Regeneration studies demonstrated that maintained over 85% three cycles, highlighting its reusability. Column validated material’s practical applicability, breakthrough times up to 23 h under optimal conditions (flow rate: 8 cm3 min−1, bed depth: cm, feed concentration: 7.5 ppm) yield 99% 5 Vb 10.8 L. Thomas column indicating chemical as dominant mechanism. These findings demonstrate potential zeolite, particularly ZH8, an effective adsorbent in real-world applications.

Language: Английский

Optimizing Viticulture Sustainability Through Foliar Zeolite Treatments: An In‐Depth Analysis of Their Impact on Gas Exchange, Yield, and the Composition of Sangiovese Grapes and Wine

Australian Journal of Grape and Wine Research, Journal Year: 2025, Volume and Issue: 2025(1)

Published: Jan. 1, 2025

In response to increasingly hot and dry summers driven by climate change, grapevines ( Vitis vinifera L.) can utilize adaptive mechanisms that often prioritize survival over yield grape quality. The efficiency of the vine canopy, particularly in terms gas exchange net assimilation, declines with water scarcity, underscoring importance mitigating strategies such as emergency irrigation. However, Mediterranean vineyards, shortages render irrigation impractical. An alternative approach is application minerals, zeolites, mitigate negative effects summer stress. This study aimed evaluate physiological, vegetative–productive, qualitative chabazite‐rich zeolite treatments on potted subjected both heat stress, field‐grown vines exposed only research was conducted a 3‐year period (2021–2023) Sangiovese grapevines, divided into two distinct trials: first (2021) second (2022–2023). trial involved 12 plants placed lysimeters, restriction (50% restitution lost through transpiration), treatments: stress (WS) WS treated natural (WS + ZEO). field 24 nonirrigated untreated control treatment Microclimatic conditions were monitored during ripening, assessed canopy physiology, yield, sunburn damage, composition. Grapes from microvinified, resulting wine color analyzed twice, after 3 months 1 year. results showed effectively reduced temperature degrees Celsius, enhancing photosynthetic activity vines. vines, these significantly improved composition, boosting total anthocyanin levels 19% berries 10% wine, compared control. conclusion, zeolite‐based appear be valuable tool for improving productive performance environments characterized multiple stresses.

Language: Английский

Zeolite application and irrigation during ripening reduced berry sunburn damage and yield loss in cv. Sangiovese (Vitis vinifera L.)

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15

Published: July 26, 2024

Climate change poses significant challenges to the grapevine cultivation for wine production. In last years, occurrence of extreme weather events such as intense heat waves and prolonged period drought increased sunburn damage with negative consequences yield berry composition. Short-term adaptation strategies are urgently needed mitigate these effects. this light, our study aimed evaluate efficacy zeolite application on canopy irrigation during ripening damage, yield, composition in cv. Sangiovese (Vitis vinifera L.). Over 3 years (2021-2023), management treatments were arranged a strip-plot design. Canopy included leaf removal cluster zone, without application, no defoliated control; comprised from softening irrigation. Both reduced thus mitigating loss. Regarding composition, did not alter main parameters whereas led reductions sugar anthocyanin concentrations. These findings suggest that represent promising cost-effective solutions grape growers facing climate change-induced challenges. However, further studies necessary optimize timing avoid detrimental effects accumulation.

Language: Английский