Adsorption of Neutral Red from Solution by Bio-Chars Produced from Pyrolysis of Wheat Straw

Zhang, Li Juan; Ma, Dan; Mao, Gui Yun; Zhang, Man Man; Han, Run Ping

doi:10.4028/www.scientific.net/amr.322.72

Cited by 7 publications

(4 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it has unacceptable effects on the ecosystem because of the toxicological impacts on the environmental and human health. In recent years, the activated carbons have been investigated for the removal of NR dye, and they showed a mere adsorption capacity 22,23 …”

Section: Introductionmentioning

confidence: 99%

Superior adsorption of cationic dye on novel bentonite/carbon composites

Fathy

El-Khouly

Ahmed

et al. 2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

The principal objective of this work was to modify the surface of natural bentonite for enhanced adsorption of cationic dyes. In this regard, novel bentonite/carbon composites were synthesized through two routes. Ferrocene/p‐xylene mixture was used as carbon source through (1) hydrothermal decomposition and (2) spray routes during the calcination of sodium‐bentonite (Na‐B) to deposit carbons on the surface of Na‐B. Samples were characterized using scanning electron microscopy (SEM) with energy dispersive spectroscopy, X‐ray diffraction (XRD), Fourier‐transform infrared, and N2 adsorption at −196°C. Cationic neutral red (NR) dye was used to investigate the adsorption capacity of the samples. SEM and XRD profiles showed that the first route deposited carbon with orthorhombic structures, whereas the second yielded carbons with hexagonal shapes like rods on Na‐B. The specific surface areas and the total pore volumes of the composites were considerably increased in comparison with matrix of bentonite. The products gave superior adsorption of NR dye, for example, 145 mg/g onto B‐C2 and attained good reusability of adsorbent where 90% of NR dye was removed on the third run at pH 5 and temperature of 25°C. These results affirm that the prepared composites are promising as novel adsorbents for the purification of water containing cationic dyes.

show abstract

Section: Introductionmentioning

confidence: 99%

Superior adsorption of cationic dye on novel bentonite/carbon composites

Fathy

El-Khouly

Ahmed

et al. 2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

show abstract

“…It is available for this carbonaceous residue used as soil amendment [4]. The bio-char from pyrolytic process has been directly used as adsorbents for the removal of heavy metals [5] and dyes [6,7]. For enhancement its surface property, PC can be activated by chemical method.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of 4-Chloro-2,5-Dimethoxy Nitrobenzene by Activated Pyrolytic Char from Pine Sawdust

Xiao

Zhang

Song

et al. 2014

AMR

Self Cite

View full text Add to dashboard Cite

The adsorption studies of 4-chloro-2,5-dimethoxy nitrobenzene (CDNB) from aqueous solution on pyrolytic char activated by ammonium dihydrogen phosphate from pine sawdust have been performed. Several experimental parameters like initial pH, NaCl concentration, contact time solution temperature were evaluated. Solution pH within 2-7 is favor of adsorption and it is advantage of adsorption at higher temperature. Langmuir, Freundlich and Temkin isotherm models were used to fit the experimental data and Temkin model was better. The adsorption capacity was up to 33.8 mg·g1at 323 K. The process is spontaneous and endothermic and physical action is major mechanism.

show abstract

“…The bio-char from pyrolytic process has been directly used as adsorbents for the removal of heavy metals [4,5]. But there are few papers about the removal of dyes from solution [6,7]. One of the cationic dyes, Neutral Red (NR, C.I.50040, FW=288.8), is selected as the adsorbate.…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Neutral Red by Pyrolytic Char from Pine Sawdust

Shang

Zhang

et al. 2014

AMR

Self Cite

View full text Add to dashboard Cite

Pyrolytic-char, a by-product from the slow pyrolysis of pine sawdust, was characterized by FTIR, SEM and XRD, etc. Then it was used as an adsorbent for the removal of cationic dye, neutral red (NR) from solution in batch mode. Adsorption studies were performed at different pH, salt concentration, contact time and dye concentration in the batch mode. Solution pH 6 is favor of adsorption and it is disadvantage of adsorption with common salt existed. Langmuir and Freundlich isotherm models were used to fit the experimental data and Freundlich was better. The adsorption quantity from experiment was up to 272 mg g1at 293 K. PR can effectively adsorb cationic dye from solution.

show abstract

Adsorption of Neutral Red from Solution by Bio-Chars Produced from Pyrolysis of Wheat Straw

Cited by 7 publications

References 11 publications

Superior adsorption of cationic dye on novel bentonite/carbon composites

Superior adsorption of cationic dye on novel bentonite/carbon composites

Adsorption of 4-Chloro-2,5-Dimethoxy Nitrobenzene by Activated Pyrolytic Char from Pine Sawdust

Adsorption of Neutral Red by Pyrolytic Char from Pine Sawdust

Contact Info

Product

Resources

About