Adsorption of Cadmium, Manganese and Lead Ions from Aqueous Solutions Using Spent Coffee Grounds and Biochar Produced by Its Pyrolysis in the Fluidized Bed Reactor

The adsorption process of cadmium ions (Cd), manganese ions (Mn) and lead ions (Pb) onto the spent coffee grounds (SCG) and activated spent coffee grounds (biochar, A-SCG) was investigated. The SCG activation was carried out in the pyrolysis process in a fluidized bed reactor. scanning electron microscope (SEM) with energy dispersive X-ray spectroscopy (EDX), Fourier-transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET) measurements and CHN analysis were used in order to define the differences between biomaterials. In the study the different mass of materials (0.2–0.5 g) and constant heavy metal volume and concentration (20 cm3/100 ppm) were investigated on the adsorption process. In order to describe the sorption parameters the Langmuir, Freundlich and Temkin isotherms were used. The maximum adsorption for biochar reached 22.3 mg/g for Pb ions, 19.6 mg/g for Mn ions and 19.4 mg/g for Cd ions which were noticeably higher than the results obtained for spent coffee grounds which reached 13.6 mg/g for Pb ions, 13.0 mg/g for Mn ions and 11.0 mg/g for Cd ions. Metal ion adsorption on both SCG and A-SCG was best described by the Langmuir model, thus chemisorption was a dominant type of adsorption. Studying the kinetics of the sorption process, one can see that the process is of a chemical nature according to the best fit of the pseudo-second rate order model. The obtained results show that the chosen sorbents can be used for the removal of cadmium, manganese and lead compounds from aqueous solutions with high efficiency.

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On the performance of a spouted bed type device for feeding spent coffee grounds to a circulating fluidized bed reactor

Chemical Engineering Research and Design ◽

10.1016/j.cherd.2020.05.002 ◽

2020 ◽

Vol 160 ◽

pp. 31-38

Author(s):

L. Massaro Sousa ◽

M.C. Ferreira

Keyword(s):

Fluidized Bed ◽

Circulating Fluidized Bed ◽

Fluidized Bed Reactor ◽

Spouted Bed ◽

Spent Coffee Grounds ◽

Type Device ◽

Coffee Grounds

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Gasification of spent coffee grounds in a semi-fluidized bed reactor using steam and CO2 gasification medium

Journal of the Taiwan Institute of Chemical Engineers ◽

10.1016/j.jtice.2021.01.029 ◽

2021 ◽

Vol 119 ◽

pp. 115-127

Author(s):

Henok Atile Kibret ◽

Yu-Lin Kuo ◽

Ting-Yu Ke ◽

Yao-Hsuan Tseng

Keyword(s):

Fluidized Bed ◽

Fluidized Bed Reactor ◽

Spent Coffee Grounds ◽

Co2 Gasification ◽

Coffee Grounds

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Novel Adsorbent Used for Cesium Removal from Aqueous Solutions

Revista de Chimie ◽

10.37358/rc.17.3.5480 ◽

2017 ◽

Vol 68 (3) ◽

pp. 470-473

Author(s):

Corneliu Mircea Davidescu ◽

Andreea Gabor ◽

Adina Negrea ◽

Mihaela Ciopec ◽

Petru Negrea ◽

...

Keyword(s):

Aqueous Solutions ◽

Metal Ion ◽

Nuclear Power ◽

Adsorption Process ◽

Magnesium Silicate ◽

Polluted Water ◽

Order Kinetic ◽

Equilibrium Studies ◽

Removal Process ◽

Geological Formation

Cesium (Cs) removal from wastewater becomes an emerging issue after the Fukushima Daiichi Nuclear Power Plant disaster. Cs(I) is an metal ion present in high level radioactive waste and has to be removed for a better disposal in geological formation. The present study investigates the adsorption process of Cs(I) from aqueous solutions on an novel adsorbent material. The novelty of this material is that the solid support, magnesium silicate, is doped with a new extractant, thiourea dissolved in ethyl alcohol. In order to establish the adsorption capacities of the adsorbent material, it was used in the removal process of metal ions. Kinetically, the adsorption process of this metal ion has the best fit for the pseudo-second-order kinetic model. The removal process through adsorption is endothermic and spontaneous due to the thermodynamic studies. Equilibrium studies were also carried out for the Langmuir, Freundlich and Sips model. The new doped material proves to be favourable as adsorbent material in the removal of Cs(I) from polluted water.

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Spent Coffee Grounds as Adsorbents for Pesticide Paraquat Removal from Its Aqueous Solutions

International Conference on Civil, Biological and Environmental Engineering (CBEE-2014) May 27-28, 2014 Istanbul (Turkey) ◽

10.15242/iicbe.c514541 ◽

2014 ◽

Cited By ~ 1

Keyword(s):

Aqueous Solutions ◽

Spent Coffee Grounds ◽

Coffee Grounds

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Prediction the Breakthrough Curves of Lead Ions Biosorption in Fluidized Bed Reactor Using Artificial Neural Network

The Journal of Solid Waste Technology and Management ◽

10.5276/jswtm.2018.321 ◽

2018 ◽

Vol 44 (4) ◽

pp. 321-329

Author(s):

Yousif M. Yousif ◽

Shahlaa E. Ebrahim ◽

Nadhem H. Hyder

Keyword(s):

Neural Network ◽

Artificial Neural Network ◽

Fluidized Bed ◽

Fluidized Bed Reactor ◽

Breakthrough Curves ◽

Lead Ions ◽

Artificial Neural

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Pilot Scale Production of Activated Carbon Spheres Using Fluidized Bed Reactor and Its Evaluation for the Removal of Hexavalent Chromium from Aqueous Solutions

Journal of The Institution of Engineers (India) Series E ◽

10.1007/s40034-017-0100-5 ◽

2017 ◽

Vol 98 (2) ◽

pp. 141-147

Author(s):

Nagesh Kumar Tripathi ◽

Manisha Sathe

Keyword(s):

Activated Carbon ◽

Aqueous Solutions ◽

Fluidized Bed ◽

Hexavalent Chromium ◽

Fluidized Bed Reactor ◽

Pilot Scale ◽

Scale Production ◽

Carbon Spheres ◽

Pilot Scale Production ◽

Activated Carbon Spheres

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Removing lead ions from aqueous solutions by the thiosemicarbazide grafted multi-walled carbon nanotubes

Water Science & Technology ◽

10.2166/wst.2017.198 ◽

2017 ◽

Vol 76 (2) ◽

pp. 302-310 ◽

Cited By ~ 2

Author(s):

Ying Zhou ◽

Jingang Yu ◽

Xinyu Jiang

Keyword(s):

Carbon Nanotubes ◽

Aqueous Solutions ◽

Adsorption Process ◽

Lead Ions ◽

Maximum Adsorption Capacity ◽

Gravimetric Analysis ◽

Order Kinetic ◽

Order Kinetic Model ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

A novel multi-walled carbon nanotubes (MWCNTs) material functionalized with thiosemicarbazide was synthesized successfully and used to remove lead ions from aqueous solutions. The technologies of Fourier Transform Infrared Spectroscopy, scanning electron microscopy and thermal gravimetric analysis were used to characterize the structure and properties of thiosemicarbazide grafted MWCNTs. The adsorption conditions, such as pH, contact time and temperature, were investigated. The results showed pH affected the adsorption process greatly, and the adsorption process reached equilibrium within 60 min. The maximum adsorption capacity was 42.01 mg/g. The adsorption process fitted well with the pseudo-second-order kinetic model and the Langmuir model. The thermodynamic parameters indicated the adsorption process was endothermic and spontaneous in nature.

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Sorption of carbendazim and linuron from aqueous solutions with activated carbon produced from spent coffee grounds: Equilibrium, kinetic and thermodynamic approach

Journal of Environmental Science and Health Part B ◽

10.1080/03601234.2018.1550307 ◽

2019 ◽

Vol 54 (4) ◽

pp. 226-236 ◽

Cited By ~ 2

Author(s):

Ali Hgeig ◽

Mladenka Novaković ◽

Ivana Mihajlović

Keyword(s):

Activated Carbon ◽

Aqueous Solutions ◽

Thermodynamic Approach ◽

Spent Coffee Grounds ◽

Coffee Grounds

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Nickel ion removal from aqueous solutions through the adsorption process: a review

Reviews in Chemical Engineering ◽

10.1515/revce-2019-0047 ◽

2020 ◽

Vol 0 (0) ◽

Cited By ~ 3

Author(s):

Mohammadtaghi Vakili ◽

Mohd Rafatullah ◽

Jing Yuan ◽

Haider M. Zwain ◽

Amin Mojiri ◽

...

Keyword(s):

Aqueous Solutions ◽

Metal Ion ◽

Adsorption Process ◽

Negative Impact ◽

Ion Concentration ◽

Nickel Ion ◽

Nickel Ions ◽

Desorption Mechanism ◽

Ph Range ◽

Nickel Adsorption

AbstractRecently, removal of nickel ions has been gaining a lot of attention because of the negative impact of nickel ions on the environment. The aim of this review paper is to organize the scattered available information on removal of nickel ions from aqueous solutions through the adsorption process. Survey on investigated materials suggests that composite- and polymer-based adsorbents have the most effective capability for nickel adsorption. The composite material class, i.e. CaCO3-maltose, followed by biopolymer-based material showed the highest Ni(II) adsorption capacity of 769.23 and 500 mg/g, respectively. The importance of treatment parameters (i.e. pH, temperature, contact time, and metal ion concentration) is discussed, together with their effect on the underlying physicochemical phenomena, giving particular attention to the adsorption/desorption mechanism. It was ascertained that adsorption of nickel ions is pH dependent and the optimal pH range for adsorption of Ni(II) ions was in range of 6–8. In general, nickel adsorption is an endothermic and spontaneous process that mainly occurs by forming a monolayer on the adsorbent (experimental data are often fitted by Langmuir isotherms and pseudo-second-order kinetics). Regeneration (i.e. desorption) is also reviewed, suggesting that acidic eluents (e.g. HCl and HNO3) allow, in most of the cases, an efficacious spent adsorbent recovery. The percentage use of desorption agents followed the order of acids (77%) > chelators (8.5%) > alkalis (8%) > salts (4.5%) > water (2%). Helpful information about adsorption and desorption of nickel ions from aqueous solutions is provided.

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