scholarly journals High-Performance Hydrogel Adsorbent Based on Cellulose, Hemicellulose, and Lignin for Copper(II) Ion Removal

Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3063
Author(s):  
Shuang Shan ◽  
Xiao-Feng Sun ◽  
Yangyang Xie ◽  
Wenbo Li ◽  
Tiezheng Ji
Keyword(s):  
Photoelectron Spectroscopy ◽  
Metal Ion ◽  
High Performance ◽  
Economic Value ◽  
Spectroscopy Analysis ◽  
One Pot ◽  
Metal Ion Removal ◽  
Ion Removal ◽  
Cellulose Fibrils ◽  
Elovich Equation

Cellulose, hemicellulose, and lignin are three kinds of biopolymer in lignocellulosic biomass, and the utilization of the three biopolymers to synthesize hydrogel adsorbent could protect the environment and enhance the economic value of the biomass. A novel hydrogel adsorbent was prepared using cellulose, lignin, and hemicellulose of wheat straw by a one-pot method, and the adsorbent showed excellent adsorption performance for copper(II) ions. Scanning electron microscopy and Fourier transform infrared spectroscopy analysis showed that the prepared straw-biopolymer-based hydrogel had porous structure, and cellulose fibrils had crosslinked with lignin and hemicellulose by poly(acrylic acid) chains. The effects of contact time, initial concentration, and temperature on the copper(II) ion removal using the prepared hydrogels were investigated, and the obtained results indicated that the adsorption kinetics conformed to the pseudo-second-order and Elovich equation models and the adsorption isotherm was in accord with the Freundlich model. The adsorption thermodynamics study indicated that the adsorption process was spontaneous and accompanied by heat. X-ray photoelectron spectroscopy analysis revealed that the adsorption behavior resulted from ion exchange. The prepared hydrogel based on cellulose, hemicellulose, and lignin could be used for water treatment and soil remediation because of its high performances of excellent heavy metal ion removal and water retention.

Novel amino-functionalized lignin microspheres: High performance biosorbent with enhanced capacity for heavy metal ion removal

2020 ◽  
Vol 156 ◽  
pp. 1160-1173 ◽  
Author(s):  
Ana L. Popovic ◽  
Jelena D. Rusmirovic ◽  
Zlate Velickovic ◽  
Zeljko Radovanovic ◽  
Mirjana Ristic ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Metal Ion ◽  
High Performance ◽  
Heavy Metal Ion ◽  
Metal Ion Removal ◽  
Ion Removal ◽  
Heavy Metal Ion Removal

scholarly journals Preparation and characterization of andisol-zeolite-fly ash-activated carbon (AZFC) as potential adsorbent for metal ion removal

2020 ◽  
Author(s):  
Antonius Agus Bambang Haryanto ◽  
Ari Handono Ramelan ◽  
MTh Sri Budiastuti ◽  
Pranoto
Keyword(s):  
Activated Carbon ◽  
Fly Ash ◽  
Metal Ion ◽  
Metal Ion Removal ◽  
Ion Removal

Heavy and toxic metal ion removal by a novel polymeric ion-exchanger: synthesis, characterization, kinetics and equilibrium studies

2014 ◽  
Vol 90 (12) ◽  
pp. 2170-2179 ◽  
Author(s):  
Raja S. Azarudeen ◽  
Mohamed A. Riswan Ahamed ◽  
R. Subha ◽  
Abdul R. Burkanudeen
Keyword(s):  
Metal Ion ◽  
Toxic Metal ◽  
Ion Exchanger ◽  
Equilibrium Studies ◽  
Metal Ion Removal ◽  
Ion Removal

Lignin-based adsorbent materials for metal ion removal from wastewater: A review

2021 ◽  
Vol 167 ◽  
pp. 113510
Author(s):  
Paola Santander ◽  
Bryan Butter ◽  
Estefanía Oyarce ◽  
Mauricio Yáñez ◽  
Ling-Ping Xiao ◽  
...  
Keyword(s):  
Metal Ion ◽  
Metal Ion Removal ◽  
Ion Removal ◽  
Adsorbent Materials

scholarly journals Fabrication of mesoporous lignin-based biosorbent from rice straw and its application for heavy-metal-ion removal

2017 ◽  
Vol 53 ◽  
pp. 132-140 ◽  
Author(s):  
Fang Xu ◽  
Ting-Ting Zhu ◽  
Qing-Quan Rao ◽  
Sheng-Wen Shui ◽  
Wen-Wei Li ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Rice Straw ◽  
Metal Ion ◽  
Heavy Metal Ion ◽  
Metal Ion Removal ◽  
Ion Removal ◽  
Heavy Metal Ion Removal

Chelating water-soluble polymers associated with ultrafiltration membranes for metal ion removal

2012 ◽  
Vol 69 (8) ◽  
pp. 881-898 ◽  
Author(s):  
Bernabé L. Rivas ◽  
Sara Hube ◽  
Julio Sánchez ◽  
Eduardo Pereira
Keyword(s):  
Metal Ion ◽  
Water Soluble ◽  
Ultrafiltration Membranes ◽  
Water Soluble Polymers ◽  
Metal Ion Removal ◽  
Soluble Polymers ◽  
Ion Removal

scholarly journals Removal of barium, cobalt, strontium and zinc from solution by natural and synthetic allophane adsorbents

2018 ◽  
Author(s):  
Andre Baldermann ◽  
Andrea Cäcilia Grießbacher ◽  
Claudia Baldermann ◽  
Bettina Purgstaller ◽  
Ilse Letofsky-Papst ◽  
...  
Keyword(s):  
Metal Ions ◽  
Metal Ion ◽  
Physical Adsorption ◽  
Ion Concentration ◽  
Pseudo First Order Reaction ◽  
Uptake Mechanism ◽  
Nano Structure ◽  
Metal Ion Removal ◽  
Ion Removal ◽  
Transmission Electron

The capacity and the mechanism of the adsorption of aqueous barium (Ba), cobalt (Co), strontium (Sr) and zinc (Zn) by Ecuadorian (NatAllo) and synthetic (SynAllo-1 and SynAllo-2) allophanes were studied as a function of contact time, pH and metal ion concentration using kinetic and equilibrium experiments. The mineralogy, nano-structure and chemical composition of the allophanes were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy and specific surface area analyses. The evolution of adsorption fitted to a pseudo-first-order reaction kinetics, where equilibrium between aqueous metal ions and allophane was reached within < 10 min. The metal ion removal efficiencies varied from 0.7 to 99.7 % at pH 4.0 to 8.5. At equilibrium, the adsorption behavior is better described by the Langmuir model than by the Dubinin-Radushkevich model, yielding sorption capacities of 10.6, 17.2 and 38.6 mg/g for Ba^(2+), 12.4, 19.3 and 29.0 mg/g for HCoO_2^-, 7.2, 15.9 and 34.4 mg/g for Sr^(2+) and 20.9, 26.9 and 36.9 mg/g for Zn^(2+), respectively, by NatAllo, SynAllo-2 and SynAllo-1. The uptake mechanism is based on a physical adsorption process. Allophane holds great potential to remove aqueous metal ions and could be used instead of zeolites, montmorillonite, carbonates and phosphates for wastewater treatment.

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