Cr(VI) adsorption performance and mechanism of an effective activated carbon prepared from bagasse with a one-step pyrolysis and ZnCl2 activation method

Cellulose ◽  
2019 ◽  
Vol 26 (8) ◽  
pp. 4921-4934 ◽  
Author(s):  
Xiaogang Luo ◽  
Yixin Cai ◽  
Liming Liu ◽  
Jian Zeng
Keyword(s):  
Activated Carbon ◽  
Activation Method ◽  
Adsorption Performance ◽  
One Step ◽  
Zncl2 Activation ◽  
Performance And Mechanism

scholarly journals Desulfurization Activity of Cobalt-Blended into Activated Carbon by One-step Activation Method

2014 ◽  
Vol 26 (4) ◽  
pp. 1058-1062 ◽  
Author(s):  
Tian Huang ◽  
Ye Li ◽  
Jiaxiu Guo ◽  
Lu Fan ◽  
Wenju Jiang
Keyword(s):  
Activated Carbon ◽  
Activation Method ◽  
One Step ◽  
Desulfurization Activity

scholarly journals Optimizing the route for production of activated carbon from Casuarina equisetifolia fruit waste

2018 ◽  
Vol 5 (7) ◽  
pp. 171578 ◽  
Author(s):  
P. Ravichandran ◽  
P. Sugumaran ◽  
S. Seshadri ◽  
Altaf H. Basta
Keyword(s):  
Activated Carbon ◽  
Bulk Density ◽  
Surface Area ◽  
Activation Process ◽  
Casuarina Equisetifolia ◽  
Adsorption Performance ◽  
Physico Chemical ◽  
Fruit Waste ◽  
American Water Work Association ◽  
One Step

This work deals with optimizing the conditions of pyrolysis and type of activator to upgrade the use of Casuarina equisetifolia fruit waste (CFW) as available and a potential precursor, in production of activated carbon (AC). In this respect, the route of activation was carried out through one- and two-step pyrolysis processes, using different chemical activating agents, such as H 3 PO 4 , KOH and ZnCl 2 . The performance of the CFW-based ACs is assessed by estimating the physico-chemical characteristics (pH, electrical conductivity, bulk density and hardness), surface morphology and scanning electron microscopy, together with carbon yield, surface area and adsorption performance of pollutants in aqueous medium (methylene blue, iodine and molasses colour removal efficiencies). The results show that the two-step activation process was more effective than one-step activation for providing high adsorption performance CFW-based ACs. The maximum Brunauer–Emmett–Teller surface area 547.89 m 2  g −1 was produced by using H 3 PO 4 activating agents, and applied two-step pyrolysis. According to the American Water Work Association and based on bulk density of the investigated ACs, we recommend that most of produced ACs are suitable for treating waste water.

scholarly journals Preparation of Activated Carbon From Sunflower Straw by H3PO4 Activation and Its Application for Acid Fuchsin Adsorption

2021 ◽  
Author(s):  
Wende Zhao ◽  
Liping Chen
Keyword(s):  
Activated Carbon ◽  
Removal Rate ◽  
Activation Method ◽  
Raw Material ◽  
Isotherm Model ◽  
Maximum Adsorption Capacity ◽  
Acid Fuchsin ◽  
Impregnation Ratio ◽  
One Step ◽  
Sunflower Straw

Abstract In this work, sunflower straw (SS) was used as the raw material, H3PO4 was used as the activator, and the sunflower straw activated carbon (SSAC) was prepared by the one-step activation method under the impregnation ratio of 1:1, 1:2, 1:3, 1:5 (SS/H3PO4, g/g). The adsorption of acid fuchsin (AF) simulated dye wastewater by SSAC prepared under different immersion ratios has been studied. As the impregnation ratio increases, the pore structures of SSAC changed greatly. SSAC3 had the largest specific surface area (1794.01 m2/g), and SSAC4 had the smallest microporosity (0.0527 cm3/g) and the largest pore volume (2.549 cm3/g). The adsorption kinetics of four types of SSAC to AF were more in line with the quasi-second-order adsorption kinetic model. The Langmuir isotherm model was suitable for describing SSAC3 and SSAC4, and the Freundlich isotherm model was suitable for describing SSAC1 and SSAC2. Thermodynamics showed that the adsorption process was spontaneous and endothermic. At 303 K, SSAC4 showed a removal rate of 97.73% for 200 mg/L AF, and the maximum adsorption capacity of 2763.36 mg/g, which was the highest among the four types of SSAC. This study shows that the sunflower straw activated carbon prepared by the H3PO4 one-step activation method is a green and efficient carbon material and has great application potential in the treatment of dye-containing wastewater.

The Effect of Activation Method on the Adsorption Performance of Saw-Dust Activated Carbon

2015 ◽  
Vol 7 (3) ◽  
pp. 302-315 ◽  
Author(s):  
Amina Attia ◽  
Reham Aboelenin ◽  
Soheir Kheder ◽  
Ghada Mohmed ◽  
Shaymaa El-Shafey
Keyword(s):  
Activated Carbon ◽  
Activation Method ◽  
Adsorption Performance ◽  
Saw Dust

Desulphurization performance of TiO2-modified activated carbon by a one-step carbonization-activation method

2016 ◽  
Vol 37 (15) ◽  
pp. 1895-1905 ◽  
Author(s):  
Chuanjun Zhang ◽  
Danni Yang ◽  
Xia Jiang ◽  
Wenju Jiang
Keyword(s):  
Activated Carbon ◽  
Activation Method ◽  
Modified Activated Carbon ◽  
One Step
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