Heavy Metals in the Environment and Health Impact

Ati-Hellal, Myriam El; Hellal, Fayçal

doi:10.5772/intechopen.97204

Cited by 19 publications

(6 citation statements)

References 47 publications

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“…Cu is crucial for plants and microbes in a very small concentration, but in high concentrations, the metal is toxic [51]. In human beings, the metal is toxic, and it can cause Wilson's disease, hepatocellular degeneration, necrosis, brain damage, and death [52]. It afects plants' physiological activities such as photosynthesis, gaseous exchange, and nutrient absorption; thus, it causes reduction in plant growth and yield [53].…”

Section: Textile Industry's Treated and Untreated Wastewatermentioning

confidence: 99%

Isotherms and Kinetic Studies of Copper Removal from Textile Wastewater and Aqueous Solution Using Powdered Banana Peel Waste as an Adsorbent in Batch Adsorption Systems

Seleman,

Sime,

Ayele

et al. 2023

International Journal of Biomaterials

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Heavy metals that are present in surface water and wastewater are becoming a severe environmental problem. Because of its toxicity, heavy metal removal has become the main priority for environmental concerns. Banana peels are low-cost agricultural waste that could be used for heavy metal adsorption in wastewater. The main objective of this study is to evaluate the effective powdered banana peel for the removal of copper (II) from aqueous solutions and real wastewater. The banana peels were collected from domestic waste and ground to get a particle size of 150 µm. Powdered banana peel waste adsorbent (PBPWA) contained moisture content, ash content, volatile matter, and bulk density of 3.8%, 3.5%, 37.5%, and 0.02 g/cm3, respectively. The Fourier-transform infrared spectroscopy (FTIR) results showed that the alkyne, aldehyde, and amide functional groups were dominant in the powdered banana peel surface, and the scanning electron microscope showed the morphology of the adsorbent. Physicochemical characteristics of the raw wastewater revealed that the concentration of Cu (II), Pb (II), COD, BOD5, and Cd (II) were 2.75 mg/L, 2.02 mg/L, 612.16 mg/L, 185.35 mg/L, and 0.01 mg/L, respectively. At pH 5, adsorbent dose of 2g/100 mL, initial copper (II) concentration of 80 mg/L, and contact time of 90 min, the maximum removal efficiency of synthetic wastewater was 96.8% and textile wastewater was 69.0%. The adsorption isotherm fitted well with the Langmuir isotherm model at R2 = 0.99. The kinetics of copper (II) adsorption followed the second-order kinetic model better. Finally, these studies showed that banana peel bio-adsorbent is a potential adsorbent for heavy metal removal from synthetic and textile wastewater.

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Section: Textile Industry's Treated and Untreated Wastewatermentioning

confidence: 99%

Isotherms and Kinetic Studies of Copper Removal from Textile Wastewater and Aqueous Solution Using Powdered Banana Peel Waste as an Adsorbent in Batch Adsorption Systems

Seleman,

Sime,

Ayele

et al. 2023

International Journal of Biomaterials

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“…Its hexavalent counterpart, Cr(VI), is highly soluble, mobile, and toxic, inflicting severe harm on animals and humans, causing issues such as kidney and liver failure, dermatitis in humans, and cellular disorganization damage to epithelial cells in aquatic organisms. − Industrial activities such as chemical manufacturing, mineral processing, steel production, metal plating, electroplating, and cement production are major contributors to the environmental release of Cr. , Similarly, vanadium is widespread in the environment and living organisms. It finds applications in heavy industries for producing pesticides, sulfuric acid, hardened steel, and as a catalyst in various reactions, such as reducing NOx with ammonia or urea from power plants, and facilitating the oxidation of alkylpyridines to nicotinic acid in the production of B-complex vitamins − Around 85% of the manufactured V is employed as ferrovanadium or as a steel additive . Excessive exposure to V could potentially threaten ecological safety by poisoning soil and water, and human health as it could, for example, affect both neurons and glial cells …”

Section: Introductionmentioning

confidence: 99%

A Review of Traditional and Intensified Hydrometallurgy Techniques to Remove Chromium and Vanadium from Solid Industrial Waste

Saidi,

El Khawaja,

Boffito

2023

ACS Eng. Au

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The continuous growth of industrial activities, driven by economic expansion and technological advancements, has increased industrial waste generation. These wastes often contain hazardous substances, including heavy metals. Their improper disposal has become a significant environmental and health concern, necessitating global attention. To address this issue and mitigate the scarcity and cost of raw materials, recycling waste materials has emerged as a viable solution, particularly in the synthesis of construction materials. Various methods, such as pyrometallurgical and hydrometallurgical techniques, have been established for recycling industrial waste. This Review focuses on hydrometallurgical techniques, specifically targeting the separation of two highly toxic heavy metals: chromium and vanadium. It comprehensively explores various hydrometallurgical methods, including acid, alkaline, organic, and oxidative leaching, for solid waste materials. Additionally, this Review highlights several intensified leaching processes assisted by electrical fields, supercritical fluids, plasma, microwaves, and ultrasound. The presented methods offer promising approaches to effectively manage industrial waste.

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“…Some heavy metals are persistent and irreversible degrading the quality of water, atmosphere, and agriculture [20][21][22]. They also raise significant concerns regarding the health of humans, plants, animals, and microorganisms due to contamination and accumulation in their respective food chains [23][24][25]. Owing to these characteristics, heavy metals are non-biodegradable and persist in the environment for extended periods [26,27].…”

Section: Introductionmentioning

confidence: 99%

Research on the Closure and Remediation Processes of Mining Areas in Romania and Approaches to the Strategy for Heavy Metal Pollution Remediation

Radu,

Vîjdea,

Ivanov

et al. 2023

Sustainability

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Mining activities often generate important amounts of extractive waste, and, as a consequence, environmental impacts that affect all factors to a greater or lesser extent. Depending on a variety of variables, the impact can be permanent or temporary, reversible or irreversible, negative or positive. This study conducted research on the status of closure and remediation processes of mining areas in Romania, specifically in the counties of Maramureș, Suceava, Harghita, Alba, Hunedoara and Caraș-Severin. Furthermore, based on the type and level of pollution, the degree of application of remediation techniques for water and soil pollution in the investigated mining areas was studied. From the analysed information, it is evident that although the closure and remediation process started in Romania over 20 years ago, unfortunately, to this day, the technical projects, technical assistance, and execution of closure and remediation works have not yet completely solved the complex environmental issues in the mining sector. Most of the tailing ponds and waste piles of former mines continue to pose permanent specific risks to the environment and the population. This study concludes that the mining sector in Romania, although it has the necessary techniques and technologies for the ecological rehabilitation of degraded lands related to the Extractive Waste Facilities and the elimination of negative impacts on the environment and public health, has not yet been able to fully concretize its remediation efforts.

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Heavy Metals in the Environment and Health Impact

Cited by 19 publications

References 47 publications

Isotherms and Kinetic Studies of Copper Removal from Textile Wastewater and Aqueous Solution Using Powdered Banana Peel Waste as an Adsorbent in Batch Adsorption Systems

Isotherms and Kinetic Studies of Copper Removal from Textile Wastewater and Aqueous Solution Using Powdered Banana Peel Waste as an Adsorbent in Batch Adsorption Systems

A Review of Traditional and Intensified Hydrometallurgy Techniques to Remove Chromium and Vanadium from Solid Industrial Waste

Research on the Closure and Remediation Processes of Mining Areas in Romania and Approaches to the Strategy for Heavy Metal Pollution Remediation

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