Introductory Chapter: Biosorption

Derco, Ján; Vrana, Branislav

doi:10.5772/intechopen.78961

Cited by 24 publications

(12 citation statements)

References 46 publications

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“…Biosorption is a kind of adsorption in which biological materials such as certain type of bacteria, algae or fungi act as adsorbents due to their intrinsic property to bind and mount up heavy metals, even from a very dilute aqueous solution or via metabolically mediated (by making use of ATP) or spontaneous physicochemical pathways of uptake (not at the cost of ATP). The process of biosorption principally involves microprecipitation, ion exchange and cell-surface complexation [ 36 , 37 , 38 , 39 ].…”

Section: Nanotechnology In Wastewater Managementmentioning

confidence: 99%

Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment

et al. 2021

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Clean and safe water is a fundamental human need for multi-faceted development of society and a thriving economy. Brisk rises in populations, expanding industrialization, urbanization and extensive agriculture practices have resulted in the generation of wastewater which have not only made the water dirty or polluted, but also deadly. Millions of people die every year due to diseases communicated through consumption of water contaminated by deleterious pathogens. Although various methods for wastewater treatment have been explored in the last few decades but their use is restrained by many limitations including use of chemicals, formation of disinfection by-products (DBPs), time consumption and expensiveness. Nanotechnology, manipulation of matter at a molecular or an atomic level to craft new structures, devices and systems having superior electronic, optical, magnetic, conductive and mechanical properties, is emerging as a promising technology, which has demonstrated remarkable feats in various fields including wastewater treatment. Nanomaterials encompass a high surface to volume ratio, a high sensitivity and reactivity, a high adsorption capacity, and ease of functionalization which makes them suitable for application in wastewater treatment. In this article we have reviewed the techniques being developed for wastewater treatment using nanotechnology based on adsorption and biosorption, nanofiltration, photocatalysis, disinfection and sensing technology. Furthermore, this review also highlights the fate of the nanomaterials in wastewater treatment as well as risks associated with their use.

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Section: Nanotechnology In Wastewater Managementmentioning

confidence: 99%

Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment

et al. 2021

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“…Algae are efficient and cheap biosorbents due to little nutrient requirement and their high productivities (i.e., high growth rate compared to the terrestrial 10 Journal of Chemistry plants and can complete an entire growing cycle in every few days) [167]. Based on statistical analysis on algae potentiality in biosorption, it has been reported that algae absorb about 15.3%-84.6% which is higher as compared to other microbial biosorbents [168]. Heavy metal uptake by microalgae encompasses passive biosorption by dead biomass and active biosorption by living microalgae cells.…”

Section: Microalgaementioning

confidence: 99%

Bioremediation of Chromium by Microorganisms and Its Mechanisms Related to Functional Groups

Ayele

Godeto

2021

Journal of Chemistry

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Heavy metals generated mainly through many anthropogenic processes, and some natural processes have been a great environmental challenge and continued to be the concern of many researchers and environmental scientists. This is mainly due to their highest toxicity even at a minimum concentration as they are nonbiodegradable and can persist in the aquatic and terrestrial environments for long periods. Chromium ions, especially hexavalent ions (Cr(VI)) generated through the different industrial process such as tanneries, metallurgical, petroleum, refractory, oil well drilling, electroplating, mining, textile, pulp and paper industries, are among toxic heavy metal ions, which pose toxic effects to human, plants, microorganisms, and aquatic lives. This review work is aimed at biosorption of hexavalent chromium (Cr(VI)) through microbial biomass, mainly bacteria, fungi, and microalgae, factors influencing the biosorption of chromium by microorganisms and the mechanism involved in the remediation process and the functional groups participated in the uptake of toxic Cr(VI) from contaminated environments by biosorbents. The biosorption process is relatively more advantageous over conventional remediation technique as it is rapid, economical, requires minimal preparatory steps, efficient, needs no toxic chemicals, and allows regeneration of biosorbent at the end of the process. Also, the presence of multiple functional groups in microbial cell surfaces and more active binding sites allow easy uptake and binding of a greater number of toxic heavy metal ions from polluted samples. This could be useful in creating new insights into the development and advancement of future technologies for future research on the bioremediation of toxic heavy metals at the industrial scale.

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“…The "green" subcategory of adsorption, biosorption, can be defined as the low-cost and low-tech concentration of pollutants from aqueous media on the solid surface of a biological matrix (biosorbent), achieved through a passive mechanism [54]. As a physico-chemical process, biosorption works by a combination of different interactions ranging from hydrogen forces to covalent bonds through which the targeted toxic species is retained on the biosorptive materials surface.…”

Section: Adsorption On Rape Waste Biomass 31 Adsorption/biosorption mentioning

confidence: 99%

“…Due to its quasi-perfect framing into the sustainable development coordinates, biosorption has received considerable acceptance in removing heavy metals and organic pollutants from wastewater [54,55]. Besides the ecologic and economic advantages, biosorption is also challenging by its applicability over a wide array of operational conditions, adaptability to varied designs of systems, possibility of sequential or simultaneous removal of pollutants from large volumes of wastewaters.…”

Section: Adsorption On Rape Waste Biomass 31 Adsorption/biosorption mentioning

confidence: 99%

Valorization of Rapeseed Waste Biomass in Sorption Processes for Wastewater Treatment

Morosanu¹,

Teodosiu²,

Tofan³

et al. 2021

Environmental Issues and Sustainable Development

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Circular economy provides an efficient framework for effective biomass valorization, through strategic use and processing of resources and waste reuse. Being the second largest energetic crop, rapeseed (RS) presents a high potential in this sense. However, good management of the large quantity of generated wastes from agro-industrial activities is required. The most common management strategies in this sense refer to the reuse of RS wastes (mainly stems and press-cake) for animal feed, compost, soil amendment and fertilizer. Valorization of RS wastes as adsorbent for wastewater treatment is attractive. Despite the fact that only few articles on this subject exist in literature, they are sufficient to reflect the potential of this adsorbent to remove both inorganic and organic compounds from aqueous phase. The rapeseed wastes were used in native form (for diluted effluents) or modified by chemical or thermal treatment (for concentrated effluents or large molecule contaminants). This chapter will provide a review on the RS wastes management strategies, highlighting the applications for removing contaminants from wastewater in single and multi-component systems, in static or continuous operation mode.

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Introductory Chapter: Biosorption

Cited by 24 publications

References 46 publications

Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment

Nanotechnology in Wastewater Management: A New Paradigm Towards Wastewater Treatment

Bioremediation of Chromium by Microorganisms and Its Mechanisms Related to Functional Groups

Valorization of Rapeseed Waste Biomass in Sorption Processes for Wastewater Treatment

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