Adsorption of Cationic Dyes on Dacryodes edulis Seeds Activated Carbon Modified Using Phosphoric Acid and Sodium Chloride

2020 ◽  
Vol 7 (4) ◽  
pp. 1151-1171 ◽  
Author(s):  
Chinenye Adaobi Igwegbe ◽  
Okechukwu Dominic Onukwuli ◽  
Joshua O. Ighalo ◽  
Patrick Ugochukwu Okoye
Keyword(s):  
Activated Carbon ◽  
Sodium Chloride ◽  
Phosphoric Acid ◽  
Cationic Dyes ◽  
Dacryodes Edulis

Activated carbon from molasses efficiency for Cr(VI), Pb(II) and Cu(II) adsorption: A mechanistic study

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Sugar Industry ◽  
Chemical Activation ◽  
High Surface ◽  
High Surface Area ◽  
Mechanistic Study ◽  
Acid Mixture ◽  
Maximum Adsorption Capacity ◽  
Good Potential

Activated carbon was prepared from molasses, which are natural precursors of vegetable origin resulting from the sugar industry. A simple elaboration process, based on chemical activation with phosphoric acid, was proposed. The final product, prepared by activation of molasses/phosphoric acid mixture in air at 500°C, presented high surface area (more than 1400 m2/g) and important maximum adsorption capacity for methylene blue (625 mg/g) and iodine (1660 mg/g). The activated carbon (MP2(500)) showed a good potential for the adsorption of Cr(VI), Cu(II) and Pb(II) from aqueous solutions. The affinity for the three ions was observed in the following order Cu2+ Cr6+ Pb2+. The process is governed by monolayer adsorption following the Langmuir model, with a correlation coefficient close to unity.

Preparation and Characterization of Activated Carbon Fibers from Jute Fibers by Phosphoric Acid Activation

2012 ◽  
Vol 184-185 ◽  
pp. 1110-1113 ◽  
Author(s):  
Li Fen He ◽  
Qi Xia Liu ◽  
Tao Ji ◽  
Qiang Gao
Keyword(s):  
Activated Carbon ◽  
Carbon Fiber ◽  
Phosphoric Acid ◽  
Carbon Fibers ◽  
Activated Carbon Fibers ◽  
Optimum Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Jute Fibers ◽  
Activating Agent

Various jute-based activated carbon fibers were prepared by using jute fibers as raw materials and phosphoric acid as activating agent. The effects of three main factors such as concentration of activating agent, activation temperature and activation time on the yield and adsorptive properties of active carbon fibers were investigated via orthogonal experiments. The surface physical morphology of jute-based activated carbon fiber was also observed by using Scanning Electron Microscope. Results showed that the optimum conditions were phosphoric acid concentration of 4 mol/L, activation temperature of 600 °C and activation time of 1h. The yield, iodine number and amount of methylene blue adsorption of the active carbon fiber prepared under optimum conditions were 37.99 %, 1208.87 mg/g and 374.65 mg/g, respectively.

Dihydroxybenzene isomers electrochemical sensor based on activated carbon sensitive material activated by mechanochemistry and low-dosage phosphoric acid

2021 ◽  
Author(s):  
Xuan Yang ◽  
Chenlu He ◽  
Yu Lin ◽  
Yijuan Qiu ◽  
Pengfei Li ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Phosphoric Acid ◽  
Electrochemical Sensor ◽  
Sensitive Material ◽  
Dihydroxybenzene Isomers ◽  
Low Dosage

Dihydroxybenzene isomers electrochemical sensor based on bamboo activated carbon (MCPBAC) sensitive material activated by mechanochemistry and low-dosage phosphoric acid was fabricated in this work. The sensor modified by MCPBAC with...

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 KARAKTERISTIK KARBON AKTIF DARI CANGKANG BUAH KARET MENGGUNAKAN AKTIVATOR H3PO4

2018 ◽  
Vol 2 (2) ◽  
pp. 1
Author(s):  
Meilianti Meilianti
Keyword(s):  
Activated Carbon ◽  
Optimum Condition ◽  
Phosphoric Acid

This research is purposed to determine the characteristic and adsorbtion ability of activated carbon which is made from rubber fruit shell with ativator phosphoric acid ( H3PO4 ). The carbonisation of activated carbon was carried out using furnace for 1 hour with temperature of 750oC. The next mashed and sieved with a size of 100 mesh. Then activated for 24 hours with H3PO4 solution with variation of concentration , 8%,  8.5%,  9%,  9.5% and    10%. As the result of characterisation, the lowest water degree wash content 10% with the value  3,25 % and lowest volatille metter from sample 10 % with the value 3,15 %. the lowest ash degree was from sample 8 % with the value 3,36 %. Maximum adsorbtion of iodine with sample 10  % with the value 947,25  mg/g . The optimum condition of activated carbon with activator phosphoric acis, which is produced in concentration 10%. Which at this concentration has moisture water degree of 3,25%, ash degree of 3,36%, volatille metter degree 3,15%, absorption iodine of 947.25 mg / g, and absorption metilene blue 98,95 mg/g.

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