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| Authors | Viswanthan, SP; Neelamury, SP; Parakkuzhiyil, S; Njazhakunnathu, GV; Sebastian, A; Padmakumar, B; Ambatt, TP |
| Author Full Name | Viswanthan, Shanthi Prabha; Neelamury, Sreekanth Prakasan; Parakkuzhiyil, Shahala; Njazhakunnathu, Gopika Vijayakumar; Sebastian, Anu; Padmakumar, Babu; Ambatt, Thomas Paili |
| Title | Removal efficiency of methylene blue from aqueous medium using biochar derived from Phragmites karka, a highly invasive wetland weed |
| Source | BIOMASS CONVERSION AND BIOREFINERY |
| Language | English |
| Document Type | Article; Early Access |
| Author Keywords | Wetland weed; Biochar; Methylene blue; Pyrolysis; Adsorption; Desorption |
| Keywords Plus | ACTIVATED CARBON; SEWAGE-SLUDGE; WASTE-WATER; RICE HUSK; BIO-CHAR; BATCH ADSORPTION; TEA WASTE; DYE; EQUILIBRIUM; KINETICS |
| Abstract | The potential of biochar derived from pyrolysis ofPhragmites karka-an invasive wetland plant biomass-for the adsorption of methylene blue (MB) dye from the aqueous medium was studied. The physico-chemical properties of the resultant char were studied using SEM-EDS, FTIR, TGA, ICP-MS, and Brunauer-Emmett-Teller (BET). Batch adsorption experiments were carried out to investigate the effect of different operational parameters on MB adsorption. Experimental data were analyzed by adsorption isotherm and kinetic models. Study results revealed that dye adsorption increased with biochar dosage, contact time, initial dye concentration, and solution pH. Contrary to the monovalent NaCl salt system, the presence and increase of the FeCl trivalent salt system increased the adsorption process. The process of adsorption followed the pseudo-second-order kinetic model. The equilibrium data was found well fitted by the Langmuir model, with a maximum dye adsorption capacity of 438.2 mg g(-1). Interactions including surface precipitation, physical and electrostatic attraction, cation exchange, intermolecular hydrogen boding and n-pi interactions are proposed to be the combined adsorption mechanisms behind the MB adsorption. The reusability of the spent adsorbent was comparatively high even after several adsorption-desorption cycles. The better dye adsorption capacity could be attributed to the innate properties of biochar as revealed through the characterization study. The study result indicated that the preparation of biochar fromP. karkaplant biomass and its further utilization as an effective adsorbent is a viable strategy towards wastewater treatment and wetland weed management. |
| Author Address | [Viswanthan, Shanthi Prabha; Neelamury, Sreekanth Prakasan; Njazhakunnathu, Gopika Vijayakumar; Sebastian, Anu; Padmakumar, Babu; Ambatt, Thomas Paili] Mahatma Gandhi Univ, Adv Ctr Environm Studies & Sustainable Dev, Sch Environm Sci, Kottayam 686560, Kerala, India; [Parakkuzhiyil, Shahala] Marcaz Arts & Sci Coll, Malappuram 679571, India |
| Reprint Address | Viswanthan, SP (corresponding author), Mahatma Gandhi Univ, Adv Ctr Environm Studies & Sustainable Dev, Sch Environm Sci, Kottayam 686560, Kerala, India. |
| E-mail Address | shanthiprabhav@gmail.com |
| Funding Agency and Grant Number | University Grant Commission (UGC), New DelhiUniversity Grants Commission, India |
| Funding Text | This research work has been conducted under the financial support of the University Grant Commission (UGC), New Delhi. |
| Publisher | SPRINGER HEIDELBERG |
| Publisher City | HEIDELBERG |
| Publisher Address | TIERGARTENSTRASSE 17, D-69121 HEIDELBERG, GERMANY |
| ISSN | 2190-6815 |
| 29-Character Source Abbreviation | BIOMASS CONVERS BIOR |
| ISO Source Abbreviation | Biomass Convers. Biorefinery |
| Digital Object Identifier (DOI) | 10.1007/s13399-020-00877-w |
| Page Count | 17 |
| Web of Science Category | Energy & Fuels; Engineering, Chemical |
| Subject Category | Energy & Fuels; Engineering |
| Document Delivery Number | MU3QF |
| Unique Article Identifier | WOS:000555586200002 |
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