3D printed porous chitosan/metal–organic framework composites as effective adsorbents to remove heavy metals from wastewater

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 493, P. 152780 - 152780

Published: June 2, 2024

Language: Английский

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Bolivian natural zeolite as a low-cost adsorbent for the adsorption of cadmium: Isotherms and kinetics

Heliyon, Journal Year: 2024, Volume and Issue: 10(1), P. e24006 - e24006

Published: Jan. 1, 2024

Population growth in recent years has led to increased wastewater production and pollution of water resources. This situation also heavily affects Bolivia, so treatment methods materials suitable for Bolivian society should be explored. study investigated the natural Zeolite (BZ) its NaCl-modified structure (NaBZ) as adsorbents cadmium removal from water. The BZ modified form NaBZ were by different physicochemical characterization techniques. Furthermore, XPS FT-IR techniques used investigate adsorption mechanisms. on was analyzed using various mathematical models, Langmuir model provided a better description experimental data with capacities 20.2 25.6 mg/g NaBZ, respectively. followed pseudo-second order kinetics. effect parameters, such initial concentration pH studied. In addition, results regeneration test indicated that both can regenerated hydrochloric acid (HCl). Finally, experiment real sample (brine Salar de Uyuni salt flat) containing mixture heavy metals carried out. obtained this demonstrate effectiveness wastewater.

Language: Английский

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Comparing Conventional and Advanced Approaches for Heavy Metal Removal in Wastewater Treatment: An In-Depth Review Emphasizing Filter-Based Strategies

Polymers, Journal Year: 2024, Volume and Issue: 16(14), P. 1959 - 1959

Published: July 9, 2024

Various industrial activities release heavy metal ions into the environment, which represent one of major toxic pollutants owing to their severe effects on humans, and all living species. Despite several technological advances breakthroughs, wastewater treatment remains a critical global issue. Traditional techniques are dedicated extracting from diverse origins, encompassing coagulation/flocculation, precipitation, flotation, ion exchange. Their cost, side toxicity, or ineffectiveness often limit large-scale use. Due adaptable design, simple operation, reasonable membrane filtration adsorption have proven efficiency in removing metals wastewater. Recently, adsorption-based filters appeared promising treating water. Within this range, incorporating natural, synthetic, hybrid adsorbents present an appealing alternative conventional approaches. This review aims list describe advanced methods by comparing efficiency, environmental impact. Adsorption-based were highlighted due significant advantages they can provide.

Language: Английский

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Biochar-based adsorption for heavy metal removal in water: a sustainable and cost-effective approach

Environmental Geochemistry and Health, Journal Year: 2024, Volume and Issue: 46(11)

Published: Sept. 24, 2024

Language: Английский

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Zeolites in wastewater treatment: A comprehensive review on scientometric analysis, adsorption mechanisms, and future prospects

Environmental Research, Journal Year: 2024, Volume and Issue: 260, P. 119782 - 119782

Published: Aug. 12, 2024

Language: Английский

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Exploring the Application of Zeolite Technology in Ethiopia: A Path to Sustainable Agriculture Development

Journal of Plant Nutrition and Soil Science, Journal Year: 2025, Volume and Issue: 188(1), P. 17 - 30

Published: Jan. 5, 2025

ABSTRACT Ethiopia faces significant agricultural challenges, including soil degradation, nutrient depletion, and water scarcity, which threaten food security sustainable development. Addressing these issues requires innovative solutions to enhance health, conserve resources, improve crop productivity. This bibliographic review systematically explores the potential of zeolite technology as a tool for tackling challenges in Ethiopia. Studies sourced from databases, such Google Scholar, PubMed, Scopus, AGRIS, were analyzed, with 123 articles selected on basis relevance, credibility, data support. Zeolite offers multiple benefits, reducing leaching by 65%–86%, increasing pH levels 7.05 8.12 7.5 t ha −1 application, improving grain yields 15.9%–31.8% across crops like rice, barley, maize 10 application. Despite advantages, adoption remains limited. highlights need field trials assess crop‐specific responses socio‐economic impacts. If identified research gaps are addressed, could become an essential component Ethiopia's toolkit, enabling farmers productivity, adapt climate variability, achieve security. Its transform farming systems, contributing resilience against environmental stresses supporting long‐term

Language: Английский

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Advances in Graphene-Based Materials for Metal Ion Sensing and Wastewater Treatment: A Review

Environments, Journal Year: 2025, Volume and Issue: 12(2), P. 43 - 43

Published: Feb. 2, 2025

Graphene-based materials, including graphene oxide (GO) and functionalized derivatives, have demonstrated exceptional potential in addressing environmental challenges related to heavy metal detection wastewater treatment. This review presents the latest advancements graphene-based electrochemical fluorescence sensors, emphasizing their superior sensitivity selectivity detecting ions, such as Pb2⁺, Cd2⁺, Hg2⁺, even complex matrices. The key focus of this is on use molecular dynamics (MD) simulations understand predict ion transport through membranes, offering insights into mechanisms efficiency removing contaminants. Particularly, article reviews effects external conditions, pore radius, functionalization, multilayers water purification provide comprehensive filtration membrane design. Functionalized membranes exhibit enhanced rejection tailored electrostatic interactions size exclusion effects, achieving up 100% rates for selected metals. Multilayered hybrid composites further improve performance structural stability, enabling sustainable, large-scale purification. However, fabrication scalability, impact, cost remain. also highlights importance computational approaches innovative material designs overcoming these barriers, paving way future breakthroughs technologies.

Language: Английский

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Chromium Removal from Aqueous Solution Using Natural Clinoptilolite

Water, Journal Year: 2023, Volume and Issue: 15(9), P. 1667 - 1667

Published: April 25, 2023

This work investigates the applicability of clinoptilolite, a natural zeolite, as low-cost adsorbent for removing chromium from aqueous solutions using fixed bed studies. To improve its removal performance inorganic pollutant, is pretreated with NaCl to prepare it in homoionic form Na+ before undertaking ion exchange Cr3+ solution. also evaluates if treated effluents could meet required effluent discharge standard set by legislation target pollutant. sustain cost-effectiveness wastewater treatment, spent regenerated NaOH. It was found that clinoptilolite has two-times higher Cr adsorption capacity (4.5 mg/g) than as-received (2.2 mg/g). Pretreatment enabled treat more volume (BV) (64 BV) at breakthrough point 0.5 mg/L concentration and achieve longer time (1500 min) first run, compared (32 BV; 250 min). suggests pretreatment rendered Na+. Although an initial 10 mg/L, were still unable limit less 0.05 US Environmental Protection Agency (EPA).

Language: Английский

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Modifying Natural Zeolites to Improve Heavy Metal Adsorption

Water, Journal Year: 2023, Volume and Issue: 15(12), P. 2215 - 2215

Published: June 12, 2023

Problems with increasing heavy metal contents in natural waters are becoming a global issue. At the same time, improved methods for water treatment increasingly important. In this context, zeolites can be used to purify polluted water. paper, we investigated how adsorption capacity of improved. Natural from Shankanay district, Almaty, Kazakhstan, were as adsorbent material experiments on improving metals. We found that metals was increased greatly by thermal activation using furnace treatment. The optimal condition about 550 °C duration 2 h. However, different varied depending heat temperature. Adsorption heat-treated at temperature 87% nickel, 99% copper and cadmium, 100% lead. 500 78% 98% copper, 83% 88% residual concentration filtered did not exceed maximum permissible concentrations drinking purposes. all experiments, intense took place during first 10 min representing 35 61% ions properties verified (BET), IR spectroscopy, scanning electron microscopy. study shows modified have great potential low-cost purifying

Language: Английский

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Natural zeolites and zeolite composites for heavy metal removal from contaminated water and their applications in aquaculture Systems: A review

The Egyptian Journal of Aquatic Research, Journal Year: 2023, Volume and Issue: 49(4), P. 431 - 443

Published: Dec. 1, 2023

Natural zeolites and composites containing zeolites, with their distinctive physicochemical properties, show great promise have been applied across various industries, including agriculture, aquaculture, water wastewater treatment, air purification, petrochemicals. Recent years witnessed significant advancements in the use of these inorganic adsorbents. The growing environmental concerns related to heavy metal contamination sources underscore need for effective remediation strategies protect ecosystems human health. This review explores diverse applications natural zeolite context removing metals from polluted water. A special focus is also given structural attributes, composition, effectiveness composites. delves into extensive utilization, insights adsorption capabilities mechanisms influencing performance. In addition, highlights potential significance materials aquaculture systems, particularly role mitigating waterborne contaminants enhancing sustainability. By synthesizing current research findings, this offers a comprehensive perspective on multifaceted roles relevance practices.

Language: Английский

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