A comprehensive review on zinc(II) sequestration from wastewater using various natural/modified low-cost agro-waste sorbents

Rahman, Zunaithur; Jegan, J.; Thivya, J.

doi:10.1007/s13399-021-01822-1

Cited by 8 publications

(3 citation statements)

References 153 publications

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“…Hydrochar attributes appeal to many and highlight effective heavy metal mitigation in wastewater treatment. Zinc is often mentioned in literature as a heavy metal found in water systems [82] . Additionally, ZnO nanoparticles and ZnCl 2 have been effectively utilized to create modified biochar that shows significant improvement in removing heavy metals [83] , [84] .…”

Section: Bibliometric Analysismentioning

confidence: 99%

Utilization of biochar for remediation of heavy metals in aqueous environments: A review and bibliometric analysis

Phiri,

Moja,

Nkambule

et al. 2024

Heliyon

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Section: Bibliometric Analysismentioning

confidence: 99%

Utilization of biochar for remediation of heavy metals in aqueous environments: A review and bibliometric analysis

Phiri,

Moja,

Nkambule

et al. 2024

Heliyon

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“…The predominant components in the composition of grain shells are hard hydrolysable polysaccharides, including cellulose, hemicellulose, pentosans, and lignin [1], which determine their ability to physical sorption. The advantages of using grain wastes as sorption materials are their availability, low cost, comparative efficiency, and ease of processing technology, as well as the possibility of regeneration [2]. Factors that significantly affect the sorption capacity of materials from waste grain processing are the concentration of sorbate and time of interaction with it, particle size, dosage, initial humidity of raw materials [3,4].…”

Section: Introductionmentioning

confidence: 99%

Heavy metal sorption by native shells of pea grain

Shelepina

2023

E3S Web of Conf.

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One of the current problems of the agricultural and industrial complex is the increase in the volume of waste generated, with a low level of recycling. A promising way to recycle waste from enterprises engaged in grain processing is to produce sorbents for purification of polluted water. The aim of this work was to study the degree of sorption of heavy metal ions, which are one of the main pollutants of surface and industrial wastewater, native shells of pea grains. The raw materials investigated were crushed and infused in distilled water. Then solutions of heavy metals in a certain concentration were added, followed by filtration, mineralisation of the obtained samples, and determination of the residual concentration of heavy metal ions by inversion voltammetry. It was found that the sorption activity of pea grain shells varies depending on the variety of this crop and the type of heavy metals. The lowest residual concentration of cadmium in the model solutions after exposure indicates the highest sorption capacity of the native shells of the pea grains in relation to the ions of this metal. The best ability to bind heavy metal ions were the shells of pea variety Temp. However, native shells of pea grains are not able to fully extract heavy metal ions from aqueous solutions. Modification of pea grain shells will increase their sorption activity.

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“…Despite the many advantages of using rice husk as a ready-made adsorbent or lignocellulosic raw material to produce adsorbents (availability and renewability of biopolymeric raw materials, low cost, high adsorption capacity and affinity for different adsorbtives, possibility of regeneration and reuse, and lack of ecotoxicity), the existing gaps in the study of this issue become apparent. Studies are developing; however, the problems mentioned in [78] ten years ago remain. Any scientific research, whether short or long term, should be orientated toward economic output.…”

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confidence: 99%

Rice Husk-Based Adsorbents for Removal of Metals from Aqueous Solutions

Yefremova,

Kablanbekov,

Satbaev

et al. 2023

Materials

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Adsorption is one of the main methods of water purification. Novel advanced, eco-friendly, cost-effective adsorbents with high adsorption capacity and selectivity are required to remove pollutants from aqueous solutions. Plant polymers are viewed as both prospective adsorbents and as raw materials to produce them instead of conventional adsorption materials. There is widespread interest in using rice husk as a universal sorbent to remove different contaminants from aqueous media because of its surplus availability, low cost, and high content of oxygen containing functional and silanol groups as active sites for adsorptive extraction. Different methods of heat and chemical treatments have been developed to improve the sorption properties of raw rice husk. Unmodified rice husk and rice-husk-based sorbents have been tested to uptake non-ferrous, ferrous, minor, precious, rare, and rare-earth metals and radionuclides from artificial and industrial solutions, natural contaminated water, and industrial wastewater. This review summarizes the results of numerous studies and characterizes the current state of work in this area, with recommendations for further development.

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A comprehensive review on zinc(II) sequestration from wastewater using various natural/modified low-cost agro-waste sorbents

Cited by 8 publications

References 153 publications

Utilization of biochar for remediation of heavy metals in aqueous environments: A review and bibliometric analysis

Utilization of biochar for remediation of heavy metals in aqueous environments: A review and bibliometric analysis

Heavy metal sorption by native shells of pea grain

Rice Husk-Based Adsorbents for Removal of Metals from Aqueous Solutions

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