Ultra-high Rhodamine B adsorption capacities from an aqueous solution by activated carbon derived from Phragmites australis doped with organic acid by phosphoric acid activation

RSC Advances ◽  
2016 ◽  
Vol 6 (47) ◽  
pp. 40818-40827 ◽  
Author(s):  
Zizhang Guo ◽  
Jian Zhang ◽  
Hai Liu
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Oxalic Acid ◽  
Phosphoric Acid ◽  
Phragmites Australis ◽  
Rhodamine B ◽  
Activated Carbons ◽  
Acid Activation ◽  
Adsorption Capacities ◽  
Phosphoric Acid Activation

This study shows that oxalic acid (OA) and succinic acid (SA) were employed to modify Phragmites australis (PA)-based activated carbons (ACs) during phosphoric acid activation to improve Rhodamine B (RhB) removal from aqueous solutions.

Activated Carbons derived by Phosphoric acid Activation of Agricultural waste and their Adsorption of Methylene Blue

2021 ◽  
pp. 435-440
Author(s):  
Amira Ouakkaf ◽  
Fatiha Chelgham ◽  
Rekia Cherbi ◽  
Mounira Chelgham ◽  
Mustapha Houhoune ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Activated Carbon ◽  
Phosphoric Acid ◽  
Activated Carbons ◽  
Bet Surface Area ◽  
Ziziphus Mauritiana ◽  
Acid Activation ◽  
Preferred Temperature ◽  
Carbon Production ◽  
Phosphoric Acid Activation

Agricultural wastes can be considered as suitable raw materials for activated carbon production, as activated carbon is considered as an economical adsorption material. Seeds from biomass of Ziziphus mauritiana Lam, grown in Algerian have been valorized for activated carbon production by the phosphoric acid, activation method with pyrolysis temperatures of 400, 500 and 600 °C. The effect of changes in pyrolysis temperatures on the yield and quality of the prepared activated carbon was studied. The obtained activated carbons were characterized by FT-IR and MB adsorption, a good yield of 38,625 %, a high BET surface area of 915,58 m2/g. The removal rate of methylene blue was strongly influenced by contact time, adsorbent mass and pH. An excellent removal % of methylene blue (MB) was obtained at the preferred temperature of 500 °C (AC 500).

Renewable bio-phenols fromin situandex situcatalytic pyrolysis ofDouglas firpellet over biobased activated carbons

2018 ◽  
Vol 2 (4) ◽  
pp. 894-904 ◽  
Author(s):  
Zixu Yang ◽  
Hanwu Lei ◽  
Kezhen Qian ◽  
Yayun Zhang ◽  
Elmar Villota
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Activated Carbons ◽  
Acid Activation ◽  
Carbon Catalyst ◽  
Phosphoric Acid Activation

Activated carbon catalyst prepared by phosphoric acid activation of biomass significantly promoted the production of phenolics free of methoxy substitutes.

Preparation of bamboo-based mesoporous activated carbon by phosphoric acid activation

Carbon ◽  
2014 ◽  
Vol 72 ◽  
pp. 429 ◽  
Author(s):  
Motohide Hata ◽  
Yoshimasa Amano ◽  
Masami Aikawa ◽  
Motoi Machida ◽  
Fumio Imazeki
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Acid Activation ◽  
Mesoporous Activated Carbon ◽  
Phosphoric Acid Activation

scholarly journals Synthesis of Activated Carbon Mesoporous from Coffee Waste and Its Application in Adsorption Zinc and Mercury Ions from Aqueous Solution

2012 ◽  
Vol 9 (2) ◽  
pp. 938-948 ◽  
Author(s):  
Liliana Giraldo ◽  
Juan Carlos Moreno-Piraján
Keyword(s):  
Aqueous Solution ◽  
Activated Carbon ◽  
Activated Carbons ◽  
Mercury Ions ◽  
Natural Properties ◽  
Coffee Waste ◽  
Adsorption Capacities ◽  
Coffee Residues ◽  
Large Pore Size ◽  
Nitrogen Conditions

We obtain activated carbons with high portion of meso pores using coffee residues as precursor for the application of adsorption of large adsorbates. Because of its natural properties, the coffee residue exhibited a large pore size. In this work, the coffee residue were impregnated with ZnCl2and KOH, and then carbonized under the nitrogen conditions and activated with CO2respectively. Obtained activated carbons are used in the adsorption of ions Hg(II) and Zn(II). These adsorbents are efficacious to remove these ions from aqueous solution, with monocomponent equilibrium adsorption capacities ranging from from 0.002 to 0.380 mmol∙g-1for Hg on ACK3 and from 0.002 to 0.330 mmol∙g-1for ACZ3. For Zn(II) on ACK2 from 0.002 to 0.300 mmol∙g-1, and from 0.001 to 0.274 mmol∙g-1for ACZ2.

Development of carbon adsorbents with high surface acidic and basic group contents from phosphoric acid activation of xylitol

RSC Advances ◽  
2015 ◽  
Vol 5 (99) ◽  
pp. 81220-81228 ◽  
Author(s):  
Hai Liu ◽  
Jian Zhang ◽  
Li Jiang ◽  
Yan Kang ◽  
Cheng Cheng ◽  
...  
Keyword(s):  
Phosphoric Acid ◽  
Activated Carbons ◽  
High Surface ◽  
Carbon Adsorbents ◽  
Acid Activation ◽  
Basic Group ◽  
Phosphoric Acid Activation

The present paper evaluated the feasibility of synthetizing activated carbons from xylitol with phosphoric acid activation at mild temperatures.

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