Activated carbons prepared by physical activation from different pretreatments of amazon piassava fibers

Castro, Jonnys Paz; Nobre, João Rodrigo Coimbra; Bianchi, Maria Lúcia; Trugilho, Paulo Fernando; Napoli, Alfredo; Chiou, Bor‐Sen; Williams, Tina; Wood, Delilah F.; Avena‐Bustillos, Roberto J.; Orts, William J.; Tonoli, Gustavo Henrique Denzin

doi:10.1080/15440478.2018.1442280

Cited by 14 publications

(14 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…AP, Amazon piassava; BP, Bahia piassava; Ch, charcoal; AC, activated carbon; Un, untreated, no pretreatment; Co, Corona electrical discharge pretreatment; Ex, solvent extraction pretreatment. Piassava AC in this study was shown to have greater capacity to adsorb methylene blue (223-424 mg g −1 ) compared to other ACs found in literature [1,6,32,[39][40][41][42]. AC adsorption for phenol in this study (125-226 mg g −1 ) were similar to reported values in the literature (145-278 mg g −1 ) [1,6,43,44].…”

Section: Infrared Spectroscopy (Ftir)supporting

confidence: 84%

“…Castro et al [6] reported a qm of 388 for adsorption of methylene blue (Corona pretreatment), whereas, in the present work, a lower qm value of 385 is reported. The pretreatments for the two studies were slightly 1 ); KL = Langmuir constant (L mg −1 ); R 2 = correlation coefficient; K F = Freundlich constant (mg g −1 ) (L g −1 ) −1/n ; 1/n = Freundlich parameter.…”

Section: Adsorption Testscontrasting

confidence: 69%

“…Castro et al [6] reported a q m of 388 for adsorption of methylene blue (Corona pretreatment), whereas, in the present work, a lower q m value of 385 is reported. The pretreatments for the two studies were slightly different which is perhaps the reason for the numerical differences in adsorption of methylene blue.…”

Section: Adsorption Testscontrasting

confidence: 69%

“…The pretreatments for the two studies were slightly different which is perhaps the reason for the numerical differences in adsorption of methylene blue. In Castro et al [6], the fibers were Corona pretreated whole whereas, in this study, the fibers were ground prior to Corona pretreatment. Perhaps in the previous work, the application of Corona pretreatment on whole fibers was more homogeneous than grinding the fibers prior to pretreatment.…”

Section: Adsorption Testsmentioning

confidence: 93%

“…Piassava fibers have great economic importance in Brazil, mainly in the states of Bahia and Amazonas, where large-scale production generates large quantities of residues. The residues are typically discarded or burned in boilers for energy generation [6].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Pretreatment Affects Activated Carbon from Piassava

Castro

Nobre

Napoli³

et al. 2020

Polymers

Self Cite

View full text Add to dashboard Cite

The specificity of activated carbon (AC) can be targeted by pretreatment of the precursors and/or activation conditions. Piassava (Leopoldinia piassaba and Attalea funifera Martius) are fibrous palms used to make brushes, and other products. Consolidated harvest and production residues provide economic feasibility for producing AC, a value-added product from forest and industrial residues. Corona electrical discharge and extraction pretreatments prior to AC activation were investigated to determine benefits from residue pretreatment. The resulting AC samples were characterized using elemental analyses and FTIR and tested for efficacy using methylene blue and phenol. All resulting AC had good adsorbent properties. Extraction as a pretreatment improved functionality in AC properties over Corona electrical discharge pretreatment. Due to higher lignin content, AC from L. piassaba had better properties than that from A. funifera.

show abstract

Section: Infrared Spectroscopy (Ftir)supporting

confidence: 84%

Section: Adsorption Testscontrasting

confidence: 69%

“…Castro et al [6] reported a q m of 388 for adsorption of methylene blue (Corona pretreatment), whereas, in the present work, a lower q m value of 385 is reported. The pretreatments for the two studies were slightly different which is perhaps the reason for the numerical differences in adsorption of methylene blue.…”

Section: Adsorption Testscontrasting

confidence: 69%

Section: Adsorption Testsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations