Nanocellulose as a bioadsorbent for water and wastewater purification

Hakimi, Mohd Idham; Najmuddin, Syed Umar Faruq Syed; Yusuff, Soleha Mohamat; Norrrahim, Mohd Nor Faiz; Janudin, Nurjahirah; Yusoff, Mohd Zulkhairi Mohd; Ilyas, R.A.

doi:10.1016/b978-0-323-89909-3.00016-x

Cited by 5 publications

(2 citation statements)

References 102 publications

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“…Likewise, treatments such as bioremediation and phytoremediation are very efficient and environmentally friendly, while physical-chemical methods are techno-economic alternatives (Singh et al, 2022). Concerning alternative technologies, the use of bio adsorbents has increased in drinking water and wastewater treatment, as well as nanomaterials that have shown excellent performance due to their chemical properties (Hakimi et al, 2022), since the way they are prepared provides better absorption capacities, reduces costs and the magnetic collection system is more optimal (Xu et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Wastewater treatment using microbial enzymatic mixture

Povis

Pérez

2023

Rev. ambiente água

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The effectiveness of the use of microbial enzymes as a wastewater treatment method depends on factors such as temperature, pressure, and oxygenation level, among others. However, very few scientific studies have provided real data regarding the evaluation of the applicability of this type of treatment. This research was therefore carried out to evaluate the effect of temperature and aerobic treatment time on the level of treatment of wastewater pollutants, with a mixture composed of enzymes and aerobic microorganisms under environmental conditions in the city of Huancayo, Peru. For this purpose, synthetic wastewater samples were prepared, considering a value of CODinitial= 800 mg L-1. One group of experiments was conducted at a 20°C controlled temperature and another group without control. The following average kinetic constants were obtained as results (Ko= 1.662 d-1, Kc=2.53 mg COD mg-1 VSS) when the T°= 20°C. For the experiments where the T° was not controlled, the average constants were: Ko= 1.217 d-1, Kc=1.24 mg COD mg-1 SSV. We observed from the measurements that the pollutant removal was adjusted to the kinetic model proposed by Orozco, and the biomass production was adjusted to the stoichiometric equation of biomass production with endogenous respiration. Therefore, we concluded that the effect of temperature control and treatment time on the level of purification caused by the microbial enzymatic product is significant at a 95% confidence level. Keywords: aerobic purification, biomass, digesting bacteria, kinetics, microorganisms.

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Section: Introductionmentioning

confidence: 99%

Wastewater treatment using microbial enzymatic mixture

Povis

Pérez

2023

Rev. ambiente água

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“…Low toxicity and density, better tensile strength, and a high aspect ratio are just a few others of the unique qualities of nanocelluose. As cellulose nanocrystals (CNC) or cellulose nanofiber (CNF), nanocellulose is extracted from various biosources like wood, corn residues, cotton, sugar palm, bamboo, and rice straw [12,13]. The extraction and characterization of nanocellulose have been the focus of many researchers so far [14].…”

Section: Introductionmentioning

confidence: 99%

Nanocellulose-Based Nanocomposites for Sustainable Applications: A Review

et al. 2022

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Nanocellulose has emerged in recent years as one of the most notable green materials available due to its numerous appealing factors, including its non-toxic nature, biodegradability, high aspect ratio, superior mechanical capabilities, remarkable optical properties, anisotropic shape, high mechanical strength, excellent biocompatibility and tailorable surface chemistry. It is proving to be a promising material in a range of applications pertinent to the material engineering to biomedical applications. In this review, recent advances in the preparation, modification, and emerging application of nanocellulose, especially cellulose nanocrystals (CNCs), are described and discussed based on the analysis of the latest investigations. This review presents an overview of general concepts in nanocellulose-based nanocomposites for sustainable applications. Beginning with a brief introduction of cellulose, nanocellulose sources, structural characteristics and the extraction process for those new to the area, we go on to more in-depth content. Following that, the research on techniques used to modify the surface properties of nanocellulose by functionalizing surface hydroxyl groups to impart desirable hydrophilic–hydrophobic balance, as well as their characteristics and functionalization strategies, were explained. The usage of nanocellulose in nanocomposites in versatile fields, as well as novel and foreseen markets of nanocellulose products, are also discussed. Finally, the difficulties, challenges and prospects of materials based on nanocellulose are then discussed in the last section for readers searching for future high-end eco-friendly functional materials.

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