scholarly journals Scaled Synthesis of Polyamine-Modified Cellulose Nanocrystals from Bulk Cotton and Their Use for Capturing Volatile Organic Compounds

Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3060
Author(s):  
Beau R. Brummel ◽  
Chandima J. Narangoda ◽  
Mohamed F. Attia ◽  
Maria I. Swasy ◽  
Gary D. Smith, Jr. ◽  
...  

We have previously demonstrated that cellulose nanocrystals modified with poly(ethylenimine) (PEI-f-CNC) are capable of capturing volatile organic compounds (VOCs) associated with malodors. In this manuscript, we describe our efforts to develop a scalable synthesis of these materials from bulk cotton. This work culminated in a reliable protocol for the synthesis of unmodified cellulose nanocrystals (CNCs) from bulk cotton on a 0.5 kg scale. Additionally, we developed a protocol for the modification of the CNCs by means of sequential 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO) oxidation and 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC) coupling to modify their surface with poly(ethylenimine) on a 100 g scale. Subsequently, we evaluated the performance of the PEI-f-CNC materials that were prepared in a series of VOC capture experiments. First, we demonstrated their efficacy in capturing volatile fatty acids emitted at a rendering plant when formulated as packed-bed filter cartridges. Secondly, we evaluated the potential to use aqueous PEI-f-CNC suspensions as a spray-based delivery method for VOC remediation. In both cases, the PEI-f-CNC formulations reduced detectable malodor VOCs by greater than 90%. The facile scaled synthesis of these materials and their excellent performance at VOC remediation suggest that they may emerge as a useful strategy for the remediation of VOCs associated with odor.

2013 ◽  
Vol 19 (1) ◽  
pp. 25-32
Author(s):  
Sung Back Cho ◽  
Seung Hak Yang ◽  
Jun Yeop Lee ◽  
Jung Kon Kim ◽  
Jung Hwan Jeon ◽  
...  

2008 ◽  
Vol 42 (7) ◽  
pp. 2631-2636 ◽  
Author(s):  
Yu-Shao Chen ◽  
Yi-Chun Hsu ◽  
Chia-Chang Lin ◽  
Clifford Yi-Der Tai ◽  
Hwai-Shen Liu

2012 ◽  
Vol 51 (27) ◽  
pp. 9441-9445 ◽  
Author(s):  
Chia-Ying Chiang ◽  
Yi-Ying Liu ◽  
Yu-Shao Chen ◽  
Hwai-Shen Liu

2016 ◽  
Vol 15 (2) ◽  
pp. 269-278 ◽  
Author(s):  
Mohd Ariffin Abu Hassan ◽  
Abdullahi Mohammed Evuti ◽  
Zainura Zainon Noor ◽  
Raja Kamarulzaman Raja Ibrahim

Environments ◽  
2018 ◽  
Vol 5 (11) ◽  
pp. 115
Author(s):  
Yonhara García-Martínez ◽  
Judith Chirinos ◽  
Christophe Bengoa ◽  
Frank Stüber ◽  
Josep Font ◽  
...  

The present work explores the biodegradation of some emerging pollutants (EPs) in an anaerobic slowly-agitated up-flow packed-bed reactor (USPBR) filled with biological activated carbon (BAC). Chlorobenzene (CB) and 2,4-dichlorophenoxyacetic acid (2,4-D) were selected as volatile organic compounds (VOC) and major constituents of many pesticides. Experiments carried out in continuous operation showed that bioconversion up to 90% was achieved for CB and 2,4-D, at space times below 0.6 h and 1.2 h, respectively, at ambient temperature. Overall, removal rates of 0.89 g L−1 d−1 and 0.46 g L−1 d−1 were obtained for CB and 2,4-D, respectively. These results revealed that the degradation of CB and 2,4-D in this anaerobic configuration of bioreactor is an efficient and fast process. The Michaelis–Menten model properly describes the degradation process for CB. Above initial concentrations of 100 mg L−1, 2,4-D presented a considerable inhibitory effect over the biofilm. For this reason, a substrate inhibition factor was included in the Michaelis–Menten equation; the expanded model presented a good fitting to the experimental data, regardless of the inlet concentration. Therefore, USPBR-BAC combination showed to be a highly efficient system for the biodegradation of such compounds.


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