Effect of chemical modification on dye adsorption capacity of peanut hull

Gong, Renmin; Sun, Yufa; Chen, Jian; Liu, Huijun; Yang, Chao

doi:10.1016/j.dyepig.2004.12.003

Cited by 226 publications

(108 citation statements)

References 34 publications

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“…About 10,000 different commercial dyes and pigments exist and over 7 x 10 5 tones are produced annually worldwide (Gong et al, 2005). In textile dyeing processes, a large volume of dye contaminated effluent is discharged and it is estimated that 10-15% of the dye is lost in the dye effluent.…”

Section: Introductionmentioning

confidence: 99%

Chemical and physical preparation of activated carbon using Raw bagasse for cationic dye adsorption

2016

Issue 2

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Agriculture wastes like sugarcane bagasse are available in large quantities in Egypt. Various adsorbents from natural materials, industrial waste materials, agricultural by-products, and biomass based activated carbon can be used in the removal of various dyes. Raw Bagasse pith (RBP) was used to prepare activated carbon (AC) using phosphoric acid (H3PO4) as a chemical activating agent. C The raw BP and the synthesized adsorbent were characterized by Fourier transform infrared (FTIR) spectroscopy and scanning electron microscope (SEM). The effectiveness of AC prepared in adsorption of methylene blue (MB) has been studied as a function of adsorbent type, initial dye concentration and contact time. The effects of the initial dye concentration and contact time were evaluated. Adsorption isotherm models -Langmuir, Freundlich and Temkin were used to simulate the equilibrium data. Langmuir equation was found to have the highest value of R 2 compared with other models. Furthermore, it was found that sugarcane bagasse have a high adsorptive capacity towards MB.

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Section: Introductionmentioning

confidence: 99%

Chemical and physical preparation of activated carbon using Raw bagasse for cationic dye adsorption

2016

Issue 2

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“…Moreover, the difference between calculated adsorption capacity (q e cal) and experimental adsorption capacity (q e (exp) ) values of second order is little when compared to the first order kinetic model. Statistically it is tested with a tool 'Sum of error squares' (SSE %) [27]. Low SSE value of pseudo second order kinetic model infers that this model is more appropriate.…”

Section: Figure 6 D-r Isotherm 43 Kinetic Studymentioning

confidence: 99%

Kinetics and isotherm studies on the adsorption of hexavalent chromium onto phosphoric acid activated Mimusops elengi leaves carbon

Nandhakumar¹,

A²,

Chandramohan³

et al. 2017

Int. J. Curr. Res. Chem. Pharm. Sci

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Hexavalent chromium [(Cr (VI))] ion is toxic and therefore, its removal from wastewater is extremely important. This study re ports on the adsorption of Hexavalent Chromium from aqueous solutions using activated carbon prepared from leaves of Mimusops elengi by phosphoric acid activation. Adsorption experiments were carried out in a batch process with various experimental parameters such as effect of contact time, initial chromium ion concentration, carbon dosage and pH. Kinetics of the system was studied with linearised forms of Lagergren, Ho and Webber Morris models. Equilibrium data were fitted with Langmuir, Freundlich, Temkin and Dubinin-Raduskevich isotherms.

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“…The FTIR spectrograms of EG and EGK are shown in Figure 5. Special functional groups corresponding to the absorption position were analyzed according to the literatures [18,19]. In the FTIR analysis, the strong peak near3418.…”

Section: Surface Characteristicsmentioning

confidence: 99%

Porous Properties and Surface Chemical Properties of the Modified Biomass Materials

Zhang¹,

Zeng²,

Zhang³

et al. 2016

EESRJ

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Porous material was prepared bycarbonization and modification treatmentof the residues extracted from tobacco stems. The preparation process of the adsorption material was optimized by response surface method. The structure and properties of the product were characterizedby scanning electron microscopy, N2 adsorption-desorption, infrared spectroscopy. The results showed that: the excellent produced conditions for the adsorption materials are as follows: the temperature is 707.40 ℃ , the ratio is 1:3 and the time is 17.20 min. The surface of material modified by KOH wasat typicalporousstructurewhich mainlybasedona large number of cavities and pores. The material had high specific surface areas and pore volumes. The material surface was a typical porous structure with a moderate pore size and uniform distribution. The pore structure is mainly based on the larger mesoporous structure and a certain microporous structure. Thematerialwith the specific surface areas and pore volumesas high as 1513.27 m 2 /gand 0.67cm 3 /g were obtained. The pore size is concentrated between 6 ~ 15 nm, which belongs to mesoporous materials. The modified material possesses more abundant functional groups, s such as -OH, -CH and other functional groups, so that the material has a certain pro -organic. The material can effectively adsorb the tar, CO and phenol in the cigarette smoke, which decreased by 20.5%, 19.2%, 49.66%, respectively. The preparation method is simple and easy to operate, and the raw materials are easy to get. The materialhas a strong industrialapplication prospect.

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Effect of chemical modification on dye adsorption capacity of peanut hull

Cited by 226 publications

References 34 publications

Chemical and physical preparation of activated carbon using Raw bagasse for cationic dye adsorption

Chemical and physical preparation of activated carbon using Raw bagasse for cationic dye adsorption

Kinetics and isotherm studies on the adsorption of hexavalent chromium onto phosphoric acid activated Mimusops elengi leaves carbon

Porous Properties and Surface Chemical Properties of the Modified Biomass Materials

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