Natural polysaccharides as potential biosorbents for heavy metal removal

Maity, Sourav; Biswas, Rimi; Verma, Sujeet Kumar; Sarkar, Angana

doi:10.1016/b978-0-12-819239-9.00012-9

Cited by 13 publications

(4 citation statements)

References 149 publications

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“…Hence, biopolymers represent a great workbench for the development of new materials with the ability to remove mercury, including polysaccharides which, due to their capacity to create physical and electrostatic forces, are considered excellent sorbents for heavy metals, with the potential for improvement through the introduction of coordinating moieties [ 21 , 22 , 23 , 24 , 25 , 26 , 27 ]. Among the materials designed and used in this sense, hydrogels and xerogels are considered the best choice due to their porous structure, which increases the surface area and enhances the contact between the hydrogel and the metal ions in the solution, improving recovery efficiency [ 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

Citryl-Imino-Chitosan Xerogels as Promising Materials for Mercury Recovery from Waste Waters

Ailincai,

Andreica

2023

Polymers

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The present study reported the obtention of xerogels based on chitosan and citral and their use as materials for mercury ion recovery from aqueous solutions, this being a serious problem related to the environment. The systems were prepared by the acid condensation of chitosan with citral, followed by the lyophilization of the resulting hydrogels, in order to obtain highly porous solid materials. The structural, morphological and supramolecular characterization of the systems was performed using 1H-NMR and FTIR spectroscopy, scanning electron microscopy and wide-angle X-ray diffraction. The ability of the obtained materials to be used for the recovery of mercury from aqueous solutions revealed the high potential of the xerogels to be used in this sense, the analysis of the materials post mercury absorption experiments revealing that this ability is predominantly conferred by the imine linkages which act as coordinating moieties for mercury ions.

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Section: Introductionmentioning

confidence: 99%

Citryl-Imino-Chitosan Xerogels as Promising Materials for Mercury Recovery from Waste Waters

Ailincai,

Andreica

2023

Polymers

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“…The drilling of wells for irrigational purposes has increased rapidly because water levels in several parts of the country have declined. The growing population, industrialization, and urbanization, integrated with intense competition between industries, agriculture, and domestic sectors, severely affect the groundwater (Maity, Biswas, et al., 2021). The above factors add up to lowering the groundwater level and its quality.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive review of arsenic contamination in India with an emphasis on its detection through biosensors and bioremediation from the aqueous system

Maity,

Bose,

Dokania

et al. 2023

Environmental Quality Mgmt

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In India, where millions of people use groundwater for drinking, arsenic pollution in groundwater is a major environmental and public health issue. The review begins by analyzing the sources and causes of groundwater arsenic pollution, including natural geological processes and anthropogenic activities like mining and industrial discharge. It emphasizes India's most arsenic‐contaminated regions and the health risks of long‐term exposure. The review's second section focuses on the use of biosensors to find arsenic in groundwater. A potential method is provided by biosensors because of their great sensitivity, selectivity, and quick response. The benefits and drawbacks of several types of biosensors, including optical, electrochemical, and microbiological biosensors, are discussed. The utilization of nanomaterials, biomolecular recognition components, and miniature devices are only a few of the most recent developments in biosensor technology for arsenic detection that are studied. The review's last section discusses methods for bio‐remediating aqueous systems that have been contaminated with arsenic. Various bioremediation techniques are covered in detail, including microbial degradation, phytoremediation, and biosorption. The promise for removing arsenic using native microbes and plant species is highlighted, along with the difficulties of widespread application and long‐term sustainability. Overall, focusing on the detection of arsenic using biosensors and investigating bioremediation techniques, this review offers a thorough grasp of the arsenic poisoning in groundwater in India. In order to combat arsenic contamination and protect the health and wellbeing of the impacted populations in India, it emphasizes the need for interdisciplinary research and collaboration among scientists, engineers, policymakers, and local communities.

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“…These interesting characteristics allow the agricultural waste to exhibit more adsorption capacity than living biomass [23]. It is important to mention that natural polysaccharides from different sources, among them agricultural waste, are a better alternative as adsorbents for wastewater treatment to remove heavy metals [24,25]. In this sense Phuengphai et al [26] used fruit peels to remove copper (II) from an aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Pitahaya Fruit (Hylocereus spp.) Peels Evaluation for Removal of Pb(II), Cd(II), Co(II), and Ni(II) from the Waters

et al. 2022

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The present study investigated the performance of Pitahaya (Hylocereus spp.) peel (PP) as a low-cost biosorbent in the removal of Co(II), Cd(II), Pb(II), and Ni(II) from single and multi-component solutions. The characterization of the samples was carried out by pHpzc, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDS). Biosorption was carried out by batch experimental procedure to examine the effects of contact time, solution pH, initial concentration of metal ions, and biosorbent dosage. The results indicate that the biosorption of Pb(II), Cd(II), Co(II), and Ni(II) Pitahaya peels followed pseudo-second-order kinetics, and equilibrium adsorption followed the Langmuir model. The maximum sorption capacities of PP for the metallic species were found to be as follows: Pb (82.64 mg g−1) > Cd (17.95 mg g−1) > Co (6.013 mg g−1) > Ni (5.322 mg g−1). However, the efficiency of the biosorption change when the metallic species are mixed. The re-generation of the PP after the adsorption of the metallic species was done using 0.1 M HNO3 solution, and the reusability of the biomass was carried out using two adsorption and desorption cycles.

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Natural polysaccharides as potential biosorbents for heavy metal removal

Cited by 13 publications

References 149 publications

Citryl-Imino-Chitosan Xerogels as Promising Materials for Mercury Recovery from Waste Waters

Citryl-Imino-Chitosan Xerogels as Promising Materials for Mercury Recovery from Waste Waters

A comprehensive review of arsenic contamination in India with an emphasis on its detection through biosensors and bioremediation from the aqueous system

Pitahaya Fruit (Hylocereus spp.) Peels Evaluation for Removal of Pb(II), Cd(II), Co(II), and Ni(II) from the Waters

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