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http://hdl.handle.net/10603/432476
Title: | Biosorption of 2 4 dichlorophenoxyacetic acid from its aqueous solution using eichhornia crassipes mart solms merremia vitifolia burm fil hall fil and hydrilla verticillata l f royle based biosorbents |
Researcher: | M T, Aswani |
Guide(s): | Pavan Kumar, M V |
Keywords: | Acetic acid Engineering Engineering and Technology Engineering Chemical |
University: | National Institute of Technology Calicut |
Completed Date: | 2021 |
Abstract: | 2,4-dichlorophenoxyacetic acid (2,4-D) is an important ingredient in many herbicide newlineand pesticide mixtures. 2,4-D is highly carcinogenic and enters the water bodies newlinethrough agriculture run-off. Although several advanced treatment techniques are newlineavailable for the removal of contaminants from wastewaters, adsorption is considered as newlinean easily employable and economical option. In this research work, biosorption newline(adsorption by biologically derived substances) of 2,4-D from its aqueous solution was newlinecarried out using the biosorbents prepared with five invasive plants, namely Eichhornia newlinecrassipes (Mart.) Solms (Water hyacinth), Merremia vitifolia (Burm. fil.) Hall. fil., newlineMikania micrantha, Mimosa diplotrica Sauvalle and Hydrilla verticillata (L.f.) Royle. newlineThe biomass derived from these plants are of no significant economic value (waste newlinebiomass). The physicochemical modifications such as ultrasound-acid treatment and newlineacid-thermal treatments of the virgin biomasses were systematically carried out and the newlinebest conditions for the chosen modification for each biomass were arrived for the newlinemaximum biosorption capacity for 2,4-D. newlineThe morphological and structural characterizations of selected biosorbents were newlinestudied using Scanning electron Microscopy (SEM), BET Surface area analyser, newlineFourier Transform Infrared Spectrometry (FTIR), X-Ray Diffraction analyser (XRD) to newlineunderstanding the affinity of the biosorbents for 2,4-D. The salient parameters such as newlineadsorbent particle size, stirring speed, contact time, biosorbent dosage, solution pH, newlineinitial 2,4-D concentrations and working temperature for 2,4-D biosorption were newlineoptimized in the batch studies. The biosorption kinetics, isotherms and thermodynamics newlinewere studied for the selected biosorbents. Also, with different solvents, the desorption newlinestudies were carried out to understand the feasibility and reusability. newline |
Pagination: | |
URI: | http://hdl.handle.net/10603/432476 |
Appears in Departments: | CHEMICAL ENGINEERING |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
01_title.pdf | Attached File | 142.17 kB | Adobe PDF | View/Open |
02_prelim pages.pdf | 319.52 kB | Adobe PDF | View/Open | |
03_content.pdf | 324.38 kB | Adobe PDF | View/Open | |
04_abstract.pdf | 131.56 kB | Adobe PDF | View/Open | |
05_chapter 1.pdf | 559.13 kB | Adobe PDF | View/Open | |
06_chapter 2.pdf | 721.34 kB | Adobe PDF | View/Open | |
07_chapter 3.pdf | 906.89 kB | Adobe PDF | View/Open | |
08_chapter 4.pdf | 1.82 MB | Adobe PDF | View/Open | |
09_chapter 5.pdf | 1.95 MB | Adobe PDF | View/Open | |
10_chapter 6.pdf | 1.67 MB | Adobe PDF | View/Open | |
11_chapter 7.pdf | 849.81 kB | Adobe PDF | View/Open | |
12-annexures.pdf | 219.75 kB | Adobe PDF | View/Open | |
80_recommendation.pdf | 165.15 kB | Adobe PDF | View/Open |
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