Nitrobenzene-adsorption capacity of NaOH-modified spent coffee ground from aqueous solution

Dai, Yingjie; DanFeng, Zhang; Zhang, Kexin

doi:10.1016/j.jtice.2016.08.042

Cited by 29 publications

(8 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…From the data presented in Table 5, it was evident that adsorption of all studied sorbates was endothermic since the value of ∆H is positive. Similar results for endothermic adsorption were also observed on adsorption on chitosan [21], bentonite [12], alkaline pretreated spent coffee grounds [22]. The positive value of ΔS corresponding to the randomness rising at the solid-solution interface during the adsorption process [22].…”

Section: Resultssupporting

confidence: 74%

Investigation of sorption mechanism of methylene blue, congo red and tannic acid from aqueous solutions onto magnetic composite sorbent obtained from alkaline pretreated spent coffee grounds

Thanh

Van

2021

BIO Web Conf.

View full text Add to dashboard Cite

In this article, a novel magnetic composite material obtained from alkaline pretreated spent coffee grounds was used for investigating of the sorption mechanism of methylene blue, congo red and tannic acid from aqueous solutions. In order to clarify mechanisms were analyzed the adsorption kinetics models (external and internal diffusion; chemical kinetics (pseudo-first order, pseudo-second order); intraparticle diffusion) and the adsorption thermodynamics. The results showed that the sorption of all studied sorbates was controlled by a mixed diffusion model and a pseudo-second order and diffusion rate revealed three stage of the mass transfer. The adsorption process of methylene blue, congo red and tannic acid onto Fe3O4/PVA/APSCGs sorbent was spontaneous and endothermic. Based on the results, it was concluded that the mechanism for removal of the studied sorbates by adsorption onto Fe3O4/PVA/APSCGs sorbent may be assumed both physisorption and chemisorption.

show abstract

Section: Resultssupporting

confidence: 74%

Investigation of sorption mechanism of methylene blue, congo red and tannic acid from aqueous solutions onto magnetic composite sorbent obtained from alkaline pretreated spent coffee grounds

Thanh

Van

2021

BIO Web Conf.

View full text Add to dashboard Cite

show abstract

“…As already mentioned, Oliveira et al and Dia Y. et al reported activated carbon materials fabricated from coffee waste with similar behaviors. 16,20 As the adsorption capacities of carbon materials depend on surface area and porosity, as well as the organic molecule (mainly oxygen complexes at the surface) content, charge and hydrophobicity are expected to be critical.…”

Section: Crystal Structurementioning

confidence: 99%

“…18,19 NaOH-modied SCG has been prepared for nitrobenzene adsorption, and a removal efficiency of 98.2% was demonstrated. 20 Yun et al, reported the preparation of a porous carbon supercapacitor material from coffee waste with KOH, 21 and Ilnicka et al, prepared nitrogen-doped carbon via a urea treatment for electrochemical applications. 22 Likewise, many other carbon materials have been prepared by alternative chemical activation.…”

Section: Introductionmentioning

confidence: 99%

Metal-free high-adsorption-capacity adsorbent derived from spent coffee grounds for methylene blue

2021

View full text Add to dashboard Cite

show abstract

“…In 2011, in the whole world 4.0 million tons spent coffee waste was produces (U.S. Department of Agriculture (USDA)) [22]. There are a few studies that coffee waste can be used as an adsorbent for the removal of pollutants from aqueous solutions [23]. In this study the aim was to remove cationic dye pollutants from synthetic wastewater using filter coffee waste as an adsorbent with the batch method.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2020

NWSA

View full text Add to dashboard Cite

In this study, removal of a cationic dye methylene blue by filter coffee grounds as a potential waste was investigated. Systematically, the effect of initial dye concentration, pH and contact time on the adsorption efficiency were determined. Isotherm and kinetic models were studied. Langmuir and Freundlich model were calculated for adsorption of methylene blue. Langmuir model is better fit than Freundlich model (R 2 =0.9892). The maximum adsorption capacity of filter coffee waste were 312.515 mg/g. Scanning electron microscope (SEM) images were used to record the surface characteristics and morphological features of filter coffee waste. This study emphases that filter coffee waste can effectively remove methylene blue from aqueous solution.

show abstract

Nitrobenzene-adsorption capacity of NaOH-modified spent coffee ground from aqueous solution

Cited by 29 publications

References 36 publications

Investigation of sorption mechanism of methylene blue, congo red and tannic acid from aqueous solutions onto magnetic composite sorbent obtained from alkaline pretreated spent coffee grounds

Investigation of sorption mechanism of methylene blue, congo red and tannic acid from aqueous solutions onto magnetic composite sorbent obtained from alkaline pretreated spent coffee grounds

Metal-free high-adsorption-capacity adsorbent derived from spent coffee grounds for methylene blue

Untitled

Contact Info

Product

Resources

About