Nitro-oxidation process for fabrication of efficient bioadsorbent from lignocellulosic biomass by combined liquid-gas phase treatment

Chen, Hui; Chi, Kai; Cao, Rangjian; Sharma, Sunil K.; Bokhari, Syed M.Q.; Johnson, Ken I.; Li, Duning; Sharma, Priyanka R.; Hsiao, Benjamin S.

doi:10.1016/j.carpta.2022.100219

Cited by 2 publications

(2 citation statements)

References 52 publications

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“…The primary C-6 and the secondary C-2 and C-3 hydroxyl groups on the D-glucose monosaccharide units allow a variety of reactive mechanisms to be employed [ 310 , 311 , 312 , 313 ]. To be used for water purification and treatment, cellulose has been modified using esterification [ 314 ], etherification [ 315 ], halogenation [ 316 ], phosphorylation [ 317 ], xanthation [ 318 ], oxidation [ 319 ], sulfonation [ 320 ], carboxymethylation [ 321 ], hydrolysis [ 322 ], nitro-oxidation [ 323 ], and polymer surface functionalization [ 324 , 325 ] methods. These modifications can help fine tune their affinity towards specific contaminates and/or add beneficial features [ 314 , 324 , 326 , 327 , 328 , 329 ].…”

Section: Incorporation Of Nps In Tfncs/mmmsmentioning

confidence: 99%

Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review

Sahu¹,

Dosi

Kwiatkowski

et al. 2023

Polymers

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Nanomaterials have been extensively used in polymer nanocomposite membranes due to the inclusion of unique features that enhance water and wastewater treatment performance. Compared to the pristine membranes, the incorporation of nanomodifiers not only improves membrane performance (water permeability, salt rejection, contaminant removal, selectivity), but also the intrinsic properties (hydrophilicity, porosity, antifouling properties, antimicrobial properties, mechanical, thermal, and chemical stability) of these membranes. This review focuses on applications of different types of nanomaterials: zero-dimensional (metal/metal oxide nanoparticles), one-dimensional (carbon nanotubes), two-dimensional (graphene and associated structures), and three-dimensional (zeolites and associated frameworks) nanomaterials combined with polymers towards novel polymeric nanocomposites for water and wastewater treatment applications. This review will show that combinations of nanomaterials and polymers impart enhanced features into the pristine membrane; however, the underlying issues associated with the modification processes and environmental impact of these membranes are less obvious. This review also highlights the utility of computational methods toward understanding the structural and functional properties of the membranes. Here, we highlight the fabrication methods, advantages, challenges, environmental impact, and future scope of these advanced polymeric nanocomposite membrane based systems for water and wastewater treatment applications.

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Section: Incorporation Of Nps In Tfncs/mmmsmentioning

confidence: 99%

Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review

Sahu¹,

Dosi

Kwiatkowski

et al. 2023

Polymers

View full text Add to dashboard Cite

show abstract

“…However, most of these methods contain multiple steps including the pulping pretreatment (i.e., remove lignin and hemicellulose, and subsequent cellulose oxidation process.) In our lab, we combined the treatments of pulping and cellulose oxidation [ 48 , 49 ] in a simple approach, termed nitro-oxidation process (NOP), using nitric acid (HNO 3 ) or nitric acid-sodium nitrite (NaNO 2 ) mixtures to extract CNF from any untreated biomass. The CNF obtained NOP is termed as NOCNF.…”

Section: Introductionmentioning

confidence: 99%

Effective Thallium(I) Removal by Nanocellulose Bioadsorbent Prepared by Nitro-Oxidation of Sorghum Stalks

Chen

Sharma

et al. 2022

Nanomaterials

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Thallium(I) (Tl(I)) pollution has become a pressing environmental issue due to its harmful effect on human health and aquatic life. Effective technology to remove Tl(I) ions from drinking water can offer immediate societal benefits especially in the developing countries. In this study, a bio-adsorbent system based on nitro-oxidized nanocellulose (NOCNF) extracted from sorghum stalks was shown to be a highly effective Tl(I) removal medium. The nitro-oxidation process (NOP) is an energy-efficient, zero-waste approach that can extract nanocellulose from any lignocellulosic feedstock, where the effluent can be neutralized directly into a fertilizer without the need for post-treatment. The demonstrated NOCNF adsorbent exhibited high Tl(I) removal efficiency (>90% at concentration < 500 ppm) and high maximum removal capacity (Qm = 1898 mg/g using the Langmuir model). The Tl(I) adsorption mechanism by NOCNF was investigated by thorough characterization of NOCNF-Tl floc samples using spectroscopic (FTIR), diffraction (WAXD), microscopic (SEM, TEM, and AFM) and zeta-potential techniques. The results indicate that adsorption occurs mainly due to electrostatic attraction between cationic Tl(I) ions and anionic carboxylate groups on NOCNF, where the adsorbed Tl(I) sites become nuclei for the growth of thallium oxide nanocrystals at high Tl(I) concentrations. The mineralization process enhances the Tl(I) removal efficiency, and the mechanism is consistent with the isotherm data analysis using the Freundlich model.

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Nitro-oxidation process for fabrication of efficient bioadsorbent from lignocellulosic biomass by combined liquid-gas phase treatment

Cited by 2 publications

References 52 publications

Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review

Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review

Effective Thallium(I) Removal by Nanocellulose Bioadsorbent Prepared by Nitro-Oxidation of Sorghum Stalks

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