Facile preparation of polyacrylamide/chitosan/Fe3O4 composite hydrogels for effective removal of methylene blue from aqueous solution

2020 ◽  
Vol 234 ◽  
pp. 115882 ◽  
Author(s):  
Cheng Zhang ◽  
Yankai Dai ◽  
Yinqiu Wu ◽  
Guangwei Lu ◽  
Zheng Cao ◽  
...  
Agriculture ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 114 ◽  
Author(s):  
Wen-Tien Tsai ◽  
Chien-Hung Hsu ◽  
Yu-Quan Lin

The use of biochar in the horticulture and crop fields is a recent method to improve soil fertility due to its porous features and rich nutrients. In the present study, dairy manure (DM) was used as a biomass precursor in the preparation of highly porous biochar (DM-BC) produced at specific conditions. Based on N2 adsorption-desorption isotherms and scanning electron microscopy (SEM) observations, the resulting biochar featured its microporous/mesoporous textures with a BET surface area of about 300 m2/g and total pore volume of 0.185 cm3/g, which could be a low-cost biosorbent for the effective removal of methylene blue (MB) from the aqueous solution. As observed by the energy dispersive X-ray spectroscopy (EDS), the primary inorganic nutrients on the surface of DM-BC included calcium (Ca), magnesium (Mg), potassium (K), phosphorus (P), silicon (Si), sulfur (S), sodium (Na) and aluminum (Al). Furthermore, the resulting biochar was investigated in duplicate for its biosorption performance of cationic compound (i.e., methylene blue, MB) from the aqueous solution with various initial MB concentrations and DM-BC dosages at 25 °C. The findings showed that the biosorption kinetic parameters fitted by the pseudo-second order rate model with high correlations were consistent with its porous features. These experimental results suggested that the porous DM-based biochar could be reused as a biosorbent, biofertilizer, or soil amendments due to the high porosity and the abundance in nutrient minerals.


2016 ◽  
Vol 115 ◽  
pp. 337-342 ◽  
Author(s):  
Kien Tiek Wong ◽  
Nguk Chin Eu ◽  
Shaliza Ibrahim ◽  
Hyunook Kim ◽  
Yeomin Yoon ◽  
...  

2019 ◽  
Vol 359 ◽  
pp. 1603-1616 ◽  
Author(s):  
Rui Zhao ◽  
Yanzi Li ◽  
Bolun Sun ◽  
Shen Chao ◽  
Xiang Li ◽  
...  

RSC Advances ◽  
2016 ◽  
Vol 6 (83) ◽  
pp. 79853-79858 ◽  
Author(s):  
Xiaowei Liu ◽  
Qingyun Wei

Porous starch-g-poly(acrylic acid) superadsorbents were prepared, which can be used for effective removal of methylene blue in water.


2015 ◽  
Vol 57 (41) ◽  
pp. 19301-19310 ◽  
Author(s):  
Shengbiao Li ◽  
Zhigang Jia ◽  
Zhiyu Li ◽  
Jianhong Liu

2015 ◽  
Vol 153 ◽  
pp. 67-75 ◽  
Author(s):  
Shanmuga Kittappa ◽  
Saravanan Pichiah ◽  
Jung Rae Kim ◽  
Yeomin Yoon ◽  
Shane A. Snyder ◽  
...  

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