Activated carbons prepared from biogas residue: characterization and methylene blue adsorption capacity

2010 ◽  
Vol 86 (3) ◽  
pp. 361-366 ◽  
Author(s):  
Xianzheng Yuan ◽  
Xiaoshuang Shi ◽  
Shujuan Zeng ◽  
Yueli Wei
2019 ◽  
Vol 276 ◽  
pp. 570-576 ◽  
Author(s):  
Hugo H.C. Lima ◽  
Rogério S. Maniezzo ◽  
Maria E.G. Llop ◽  
Vincente L. Kupfer ◽  
Pedro A. Arroyo ◽  
...  

2015 ◽  
Vol 6 (2) ◽  
pp. 9-14 ◽  
Author(s):  
Surajudeen Olawale Adegboyega ◽  
Ayoola Ajayi Olusegun ◽  
Sunday Olakunle Michael ◽  
Thaddeus Ityokumbul Mku ◽  
Sunday Adefila Sam

2020 ◽  
Vol 841 ◽  
pp. 273-277
Author(s):  
Ariany Zulkania ◽  
Muhammad Iqbal ◽  
Syamsumarlin

In this study, two types of adsorbent including activated carbon and bio-sorbent were produced from Palm fiber wastes (PFW), which were activated by phosphoric acid. The influence of adsorbent type and phosphoric acid concentration on methylene blue adsorption was investigated. The most optimum adsorbent was determined based on adsorption capacity and removal percentage of each adsorbent. The result shows that 9.984 mg/g of adsorption capacity and 99.84% of removal percentage were achieved in 90 minutes’ adsorption, which demonstrates the huge potential of bio-sorbent and was chosen to be the most optimum adsorbent based on methylene blue removal. The characterization of bio-sorbent was then investigated using FTIR and SEM. FTIR result shows that bio-sorbent contains cellulose which affected the adsorption process while SEM result shows the cleaner pores and surface compared to bio-sorbent before activation.


2011 ◽  
Vol 92 (6) ◽  
pp. 1203-1212 ◽  
Author(s):  
M. Benadjemia ◽  
L. Millière ◽  
L. Reinert ◽  
N. Benderdouche ◽  
L. Duclaux

Author(s):  
Trần Quang Ngọc ◽  
Hoang Thi Trang Nguyen ◽  
Vo Nhat Thang

Chitosan obtained from shrimp shells and SiO2 nanoparticles obtained from rice husk ash were used to synthesize chitosan - SiO2 composite materials. In order to obtain a porous chitosan adsorbent, the SiO2 particles in the chitosan - SiO2 composite material were removed with NaOH solution. With the orientation of applying adsorbent in wastewater treatment of textile industry, the ability of methylene blue adsorption of chitosan with porous structure has been investigated. Survey results show that chitosan has porous structure with good adsorption capacity of methylene blue. The adsorption capacity of materials depends on many factors such as: structure of particles; pH of adsorption medium and temperature. Adsorbent material is made of composite chitosan - SiO2 with the ratio of chitosan/SiO2 equal to 1/1 (w/w) with the best adsorption capacity. Materials with good adsorption capacity at pH = 6, at low pH, the adsorption capacity of the material is significantly reduced. Temperature has a great influence on the adsorption capacity of the material. The suitable temperature for adsorption of materials is 40 oC. With a higher temperature, the desorption process will be accelerated. This makes the adsorption capacity of the material decrease. The maximum methylene blue adsorption capacity of the material is determined about 7.25 mg/g after 40 minutes of adsorption time.


2013 ◽  
Vol 5 (23) ◽  
pp. 12654-12662 ◽  
Author(s):  
Miao Feng ◽  
Wen You ◽  
Zhongsheng Wu ◽  
Qidi Chen ◽  
Hongbing Zhan

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