An Amorphous Coordination Polymer with High Adsorption Ability for Anionic Dyes from Aqueous Solution

2013 ◽  
Vol 5 (4) ◽  
pp. 341-345 ◽  
Author(s):  
Bing Li ◽  
Yan-Long Feng ◽  
Jian-Zhong Guo ◽  
Li-Qun Bai ◽  
Jie Chen ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Coordination Polymer ◽  
High Adsorption ◽  
Anionic Dyes ◽  
Adsorption Ability

Improving barium ion adsorption on two-dimensional titanium carbide by surface modification

2018 ◽  
Vol 47 (25) ◽  
pp. 8375-8381 ◽  
Author(s):  
Wanjun Mu ◽  
Shenzhen Du ◽  
Qianhong Yu ◽  
Xingliang Li ◽  
Hongyuan Wei ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Surface Modification ◽  
Titanium Carbide ◽  
Ion Adsorption ◽  
Two Dimensional ◽  
High Adsorption ◽  
Adsorption Ability ◽  
Barium Ion

To capture radioactive barium from wastewater, the Ti3C2Tx material was modified by activation treatment and it exhibited high adsorption ability for removal of Ba2+ from aqueous solution.

Enhanced catalytic ability of chitosan–Cu–Fe bimetal complex for the removal of dyes in aqueous solution

RSC Advances ◽  
2015 ◽  
Vol 5 (110) ◽  
pp. 90731-90741 ◽  
Author(s):  
Sadia Rashid ◽  
Chensi Shen ◽  
Xiaoguang Chen ◽  
Su Li ◽  
Yanhong Chen ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Catalytic Activity ◽  
Metal Complex ◽  
High Adsorption ◽  
Adsorption Ability

In this study, despite the high adsorption ability, efficient catalytic activity of a chitosan–metal complex has been developed through the chelation of chitosan polymer with bimetals Cu(ii) and Fe(iii).

scholarly journals Toxic Metal Adsorption from Aqueous Solution by Activated Biochars Produced from Macadamia Nutshell Waste

2020 ◽  
Vol 12 (19) ◽  
pp. 7909
Author(s):  
Minh Trung Dao ◽  
T. T. Tram Nguyen ◽  
X. Du Nguyen ◽  
D. Duong La ◽  
D. Duc Nguyen ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Metal Ions ◽  
Environmental Remediation ◽  
Toxic Metal ◽  
High Adsorption ◽  
Adsorption Ability ◽  
Toxic Metal Ions ◽  
Activated Biochar ◽  
Effects Of Ph ◽  
H3po4 Activation

Abundantly available biomass wastes from agriculture can serve as effective environmental remediation materials. In this study, activated biochar was fabricated from macadamia nutshell (MCN) through carbonization and chemical modification. The resultant biochars were used as adsorbents to remove toxic metal ions such as Cu2+ and Zn2+ from aqueous solutions. The results showed that the activated MCN biochar has a high adsorption capacity for toxic metal ions. When MCN biochar was activated with K2CO3, the adsorption efficiencies for Cu2+ and Zn2+ were 84.02% and 53.42%, respectively. With H3PO4 activation, the Cu2+- and Zn2+-adsorption performances were 95.92% and 67.41%, respectively. H2O2-modified MCN biochar had reasonable Cu2+- and Zn2+-adsorption efficiencies of 79.33% and 64.52%, respectively. The effects of pH, adsorbent concentration and adsorption time on the removal performances of Cu2+ and Zn2+ in aqueous solution were evaluated. The results exhibited that the activated MCN biochar showed quick adsorption ability with an optimal pH of 4 and 4.5 for both Cu2+ and Zn2+, respectively.

Effects of Surface Properties and Solvent PH Values on the Adsorption/Desorption Abilities of Mesoporous SBA-15 to Methylene Blue Molecules

2012 ◽  
Vol 518-523 ◽  
pp. 352-355
Author(s):  
Hui Liu ◽  
Hong Liang Li ◽  
Meng Xue Wang ◽  
Jing Jing Sang ◽  
Xiu Song Zhao
Keyword(s):  
Aqueous Solution ◽  
Methylene Blue ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Surface Properties ◽  
Weak Base ◽  
Adsorption Ability ◽  
Ph Values ◽  
Model Molecule ◽  
Adsorption Desorption

Methylene blue (MB) was used as model molecule to investigate the effects of surface properties and solvent pH values on the adsorption and desorption (or release) behaviors of mesoporous SBA-15 materials. It was found that the treatment of SBA-15 with a pH 7.8 aqueous solution can enhance the adsorption rate and capacity in comparison with the pristine SBA-15. The effect of pH values on MB releasing from the weak base treated SBA-15 and the pristine one have been studied and been compared in pH values range from 0.5 to 7.0. Both of them showed a maximum releasing rate at about pH 2 and all of the treated SBA-15 samples showed a higher releasing quantity than the pristine ones. The influence mechanisms of base treatment on the adsorption ability and that of pH values on the releasing properties of SBA-15 samples have been analyzed and been discussed based on the composition, the morphology, the surface area and pore size distribution and adsorption/desorption measurements.

Fabrication of cellulosic paper containing zeolitic imidazolate framework and its application in removal of anionic dye from aqueous solution

BioResources ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. 2644-2654
Author(s):  
Zicheng Chen ◽  
Huiwen Zhang ◽  
Xiangyang He ◽  
Guangyuan Fan ◽  
Xiaosong Li ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Functional Materials ◽  
Anionic Dyes ◽  
Zeolitic Imidazolate Framework ◽  
Cellulosic Fibers ◽  
Simple Filtration ◽  
Metal Organic ◽  
Potential Strategy ◽  
Cellulosic Paper

The combination of metal organic frameworks (MOFs) with other functional materials is a potential strategy for the preparation of advanced MOF-based materials. In this study, a simple approach is reported for the fabrication of cellulosic paper containing zeolitic imidazolate framework (ZIF-8) through in-situ loading in the papermaking process. The results showed that the ZIF-8 was evenly distributed in the paper substrate owing to the multi-layers structure of the cellulosic fibers, although the loading of the ZIF-8 particles on the single cellulosic fiber was nonuniform. The as-prepared ZIF-8 composites can be used as a highly efficient adsorbent material for anionic dyes in aqueous solution thanks to the positive charge on the surface of the ZIF-8 particles. More than 92% of the methyl orange (MO-) dye in the aqueous solution was rapidly removed through a simple filtration process using the ZIF-8 composite cellulosic paper (hand-sheets made in lab) when the content of ZIF-8 in cellulosic paper was high as 25.1%. In addition, the ZIF-8 composite paper had acceptable flexibility and could be reused at least 4 cycles by washing out the adsorbed dye.

Facile and large-scale synthesis of poly(m-phenylenediamine) nanobelts with high surface area and superior dye adsorption ability

RSC Advances ◽  
2014 ◽  
Vol 4 (85) ◽  
pp. 45244-45250 ◽  
Author(s):  
Yun Meng ◽  
Liyuan Zhang ◽  
Liyuan Chai ◽  
Wanting Yu ◽  
Ting Wang ◽  
...  
Keyword(s):  
Surface Area ◽  
Large Scale ◽  
High Surface ◽  
High Surface Area ◽  
Dye Adsorption ◽  
High Adsorption ◽  
Adsorption Ability ◽  
Adsorption Performance ◽  
Large Scale Synthesis

PmPD nanobelts with high adsorption performance have been synthesized by using CTAP as oxidants.

scholarly journals Simultaneous removal of cationic and anionic dyes from aqueous solution by double functional groups modified bagasse

2020 ◽  
Vol 82 (10) ◽  
pp. 2159-2167
Author(s):  
Ru-yi Zhou ◽  
Jun-xia Yu ◽  
Ru-an Chi
Keyword(s):  
Aqueous Solution ◽  
Functional Groups ◽  
Order Kinetic ◽  
Anionic Dyes ◽  
Adsorption Capacities ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Amine Groups ◽  
Modified Adsorbents ◽  
Zeta Potential Analysis

Abstract Double functional groups modified bagasse (DFMBs), a series of new zwitterionic groups of carboxyl and amine modified adsorbents, were prepared through grafting tetraethylenepentamine (TEPA) onto the pyromellitic dianhydride (PMDA) modified bagasse using the DCC/DMAP method. DFMBs' ability to simultaneously remove basic magenta (BM, cationic dye) and Congo red (CR, anionic dye) from aqueous solution in single and binary dye systems was investigated. FTIR spectra and Zeta potential analysis results showed that PMDA and TEPA were successfully grafted onto the surface of bagasse, and the ratio of the amount of carboxyl groups and amine groups was controlled by the addition of a dosage of TEPA. Adsorption results showed that adsorption capacities of DFMBs for BM decreased while that for CR increased with the increase of the amount of TEPA in both single and binary dye systems, and BM or CR was absorbed on the modified biosorbents was mainly through electrostatic attraction and hydrogen bond. The adsorption for BM and CR could reach equilibrium within 300 min, both processes were fitted well by the pseudo-second-order kinetic model. The cationic and anionic dyes removal experiment in the binary system showed that DMFBs could be chosen as adsorbents to treat wastewater containing different ratios of cationic and anionic dyes.

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