Heavy Metal Removal from Wastewater Using Adsorbents

Malik, Reena; Bhaskaran,; Meena, .; Lata, Suman

doi:10.1007/978-3-030-52421-0_13

Cited by 6 publications

(2 citation statements)

References 128 publications

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“…Wool's ability to retain various chemicals has been exploited for centuries, the legend of "the golden fleece" being based on the real fact of the utilization of wool in screening gold particles from flowing rivers. This property is now used for making wool filters for purifying waters used in the food or pharmaceutical industry, wool filters being able to absorb even the traces of heavy metals present in waters [234,235]. Raw wool is also a good metal adsorbent for metal ions like Zn and Cu, with a sorption efficiency of over 90% [236].…”

Section: Materials For Industrial Applicationsmentioning

confidence: 99%

Eco-Friendly Processing of Wool and Sustainable Valorization of This Natural Bioresource

Popescu,

Stanescu

2024

Sustainability

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The environmental invasion of plastic waste leads to, among other things, a reassessment of natural fibers. Environmental pollution has shown the importance of the degradability, among other properties, of the raw materials used by the textile industry or other industrial fields. Wool seems to be a better raw material than the polymers that generate large quantities of micro- and nano-plastics, polluting the soil, water, and air. However, the usual processing of raw wool involves a number of chemically very polluting treatments. Thus, sustainable procedures for making wool processing environmentally friendly have been considered, leading to the reappraisal of wool as a suitable raw material. Besides their applications for textile products (including smart textiles), new directions for the valorization of this natural material have been developed. According to the recent literature, wool may be successfully used as a thermal and phonic insulator, fertilizer, or component for industrial devices, or in medical applications, etc. In addition, the wool protein α-keratin may be extracted and used for new biomaterials with many practical applications in various fields. This review makes a survey of the recent data in the literature concerning wool production, processing, and applications, emphasizing the environmental aspects and pointing to solutions generating sustainable development.

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Section: Materials For Industrial Applicationsmentioning

confidence: 99%

Eco-Friendly Processing of Wool and Sustainable Valorization of This Natural Bioresource

Popescu,

Stanescu

2024

Sustainability

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“…A wide variety of biomaterials have been studied to prepare adsorbents with suitable properties to absorb heavy metal ions. Food waste biomass is an attractive source of biomaterials that mitigate municipal solid waste disposal problems [MALIK et al 2021]. Waste disposal on the northern coast of Colombia represents a severe problem for the environment and public health because agriculture has a significant impact on the total volume of solid waste generation, and dispersed agricultural sources contribute 84% of the biochemical oxygen demand of surface waters [BIGDELOO et al 2021;TOBÓN-OROZCO, VASCO CORREA 2021].…”

Section: Introductionmentioning

confidence: 99%

Journal of Water and Land Development

Villabona-Ortíz,

Tejada-Tovar,

Ortega-Toro

et al. 2022

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The objective of this research was to evaluate the adsorption capacity of the shell biomass (Dioscorea rotundata), taking into account the impact of temperature, bed height, and particle size on the removal of nickel(II) ions in aqueous solution in a continuous fixed-bed column system; performing the modelling of the break curve. The biomass was characterised by SEM-EDS analysis. The analysis found that it represents a rough, heterogeneous structure, rich in carbon and oxygen, with mesopores, and is suitable for removing heavy metals. It also determined the optimum parameters of the bed height, particle size, and temperature, keeping the pH and the initial concentration of the solution constant. The results revealed that the bed height and the particle size are the two most influential variables in the process. Ni(II) removal efficiencies range between 85.8 and 98.43%. It was found that the optimal conditions to maximise the efficiency of the process are temperature of 70°C, 1.22 mm particle size, and 124 mm bed height. The break curve was evaluated by fitting the experimental data to the Thomas, Adams-Bohart, Dose-Response, and Yoon-Nelson models, with the Dose-Response model showing the best affinity with a coefficient of determination R 2 of 0.9996. The results obtained in this research showed that yam shell could be suggested as an alternative for use in the removal of Ni(II) ions present in an aqueous solution in a continuous system.

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