Simultaneous and Efficient Capture of Inorganic Nitrogen and Heavy Metals by Polyporous Layered Double Hydroxide and Biochar Composite for Agricultural Nonpoint Pollution Control

2018 ◽  
Vol 10 (49) ◽  
pp. 43013-43030 ◽  
Author(s):  
Lixun Zhang ◽  
Shengyin Tang ◽  
Chaojin Jiang ◽  
Xiaoqian Jiang ◽  
Yuntao Guan
Keyword(s):  
Heavy Metals ◽  
Layered Double Hydroxide ◽  
Pollution Control ◽  
Inorganic Nitrogen ◽  
Nonpoint Pollution ◽  
Double Hydroxide

Efficient, stable and selective adsorption of heavy metals by thio-functionalized layered double hydroxide in diverse types of water

2018 ◽  
Vol 332 ◽  
pp. 387-397 ◽  
Author(s):  
Jawad Ali ◽  
Huabin Wang ◽  
Jerosha Ifthikar ◽  
Aimal Khan ◽  
Ting Wang ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Layered Double Hydroxide ◽  
Selective Adsorption ◽  
Double Hydroxide

Highly Selective and Efficient Removal of Heavy Metals by Layered Double Hydroxide Intercalated with the MoS42– Ion

2016 ◽  
Vol 138 (8) ◽  
pp. 2858-2866 ◽  
Author(s):  
Lijiao Ma ◽  
Qing Wang ◽  
Saiful M. Islam ◽  
Yingchun Liu ◽  
Shulan Ma ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Layered Double Hydroxide ◽  
Efficient Removal ◽  
Removal Of Heavy Metals ◽  
Double Hydroxide

Simultaneous adsorption of trace sulfamethoxazole and hexavalent chromium by biochar/MgAl layered double hydroxide composites

2019 ◽  
Vol 16 (1) ◽  
pp. 68 ◽  
Author(s):  
Guowan Li ◽  
Zhujian Huang ◽  
Chengyu Chen ◽  
Hongcan Cui ◽  
Yijuan Su ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Human Health ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Metal Species ◽  
Simultaneous Removal ◽  
Simultaneous Adsorption ◽  
Potential Risks ◽  
Double Hydroxide ◽  
Double Hydroxides

Environmental contextWater contamination by antibiotics and heavy metals entails potential risks to both the environment and human health. Composite materials based on MgAl-layered double hydroxides and biochar simultaneously adsorbed the toxic sulfamethoxazole and CrVI metal species. These findings indicate that biochar/metal hydroxide composites could be valuable adsorbents for the simultaneous removal of trace antibiotics and metals from water. AbstractWater contamination by antibiotics and heavy metals has drawn wide attention because of the potential risks it poses to both the environment and human health. In this study, a series of adsorbents was successfully synthesised based on MgAl-layered double hydroxides (LDHs) and biochar (BC) derived from Pennisetum sinese Roxb. The batch adsorption experiment results showed that the obtained composites could effectively adsorb trace sulfamethoxazole (SMX) and CrVIsimultaneously. The simultaneous adsorption of trace SMX and CrVI are well described by the pseudo-second-order kinetics and Freundlich isotherm models. Characterisation of the composites after adsorption showed that the composites adsorbed SMX mainly by π-π bonds, hydrophobic interactions and hydrogen bonds. Electrostatic interaction, anion exchange, intraparticle diffusion and hydrogen bonding are the main mechanisms for CrVI adsorption onto the composites. This study indicates that the biochar/MgAl layered double hydroxide composites are promising adsorbents for the simultaneous removal of trace antibiotics and CrVI.

CO2-effervescence assisted dispersive micro solid-phase extraction based on a magnetic layered double hydroxide modified with polyaniline and a surfactant for efficient pre-concentration of heavy metals in cosmetic samples

2020 ◽  
Vol 12 (40) ◽  
pp. 4867-4877
Author(s):  
Maryam Rajabi ◽  
Zohreh Mollakazemi ◽  
Maryam Hemmati ◽  
Somayeh Arghavani-Beydokhti
Keyword(s):  
Heavy Metals ◽  
Solid Phase Extraction ◽  
Layered Double Hydroxide ◽  
Solid Phase ◽  
Extraction Procedure ◽  
Phase Extraction ◽  
Solid Phase Extraction Procedure ◽  
Double Hydroxide

CO2-effervescence assisted dispersive micro solid-phase extraction procedure (CO2-EA-DμSPE) using a magnetic layered double hydroxide modified with polyaniline and a surfactant (Zn–Al–LDH–PA–DBSNa–Fe3O4) was applied for the pre-concentration of heavy metals.

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