Removal of Sulfur Dioxide from Flue Gas Using the Sludge Sodium Humate

This study shows the ability of sodium humate from alkaline treatment sludge on removing sulfur dioxide (SO2) in the simulated flue gas. Experiments were conducted to examine the effect of various operating parameters, like the inlet SO2 concentration or temperature or O2, on the SO2 absorption effi...

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Main Authors: Yu Zhao, Guoxin Hu
Format: Article
Language:English
Published: Wiley 2013-01-01
Series:The Scientific World Journal
Online Access:http://dx.doi.org/10.1155/2013/573051
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author Yu Zhao
Guoxin Hu
author_facet Yu Zhao
Guoxin Hu
author_sort Yu Zhao
collection DOAJ
description This study shows the ability of sodium humate from alkaline treatment sludge on removing sulfur dioxide (SO2) in the simulated flue gas. Experiments were conducted to examine the effect of various operating parameters, like the inlet SO2 concentration or temperature or O2, on the SO2 absorption efficiency and desulfurization time in a lab-scale bubbling reactor. The sludge sodium humate in the supernatant after alkaline sludge treatment shows great performance in SO2 absorption, and such efficiency can be maintained above 98% with 100 mL of this absorption solution at 298 K (flue gas rate of 0.12 m3/h). The highest SO2 absorption by 1.63 g SHA-Na is 0.946 mmol in the process, which is translated to 0.037 g SO2 g−1 SHA-Na. The experimental results indicate that the inlet SO2 concentration slightly influences the SO2 absorption efficiency and significantly influences the desulfurization time. The pH of the absorption solution should be above 3.5 in this process in order to make an effective desulfurization. The products of this process were characterized by Fourier transform infrared spectroscopy and X-ray diffraction. It can be seen that the desulfurization products mainly contain sludge humic acid sediment, which can be used as fertilizer components.
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spelling doaj-art-6095153160df4c3b83d2df0c4de7820e2025-02-03T01:27:42ZengWileyThe Scientific World Journal1537-744X2013-01-01201310.1155/2013/573051573051Removal of Sulfur Dioxide from Flue Gas Using the Sludge Sodium HumateYu Zhao0Guoxin Hu1School of Mechanical and Power Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaSchool of Mechanical and Power Engineering, Shanghai Jiao Tong University, Shanghai 200240, ChinaThis study shows the ability of sodium humate from alkaline treatment sludge on removing sulfur dioxide (SO2) in the simulated flue gas. Experiments were conducted to examine the effect of various operating parameters, like the inlet SO2 concentration or temperature or O2, on the SO2 absorption efficiency and desulfurization time in a lab-scale bubbling reactor. The sludge sodium humate in the supernatant after alkaline sludge treatment shows great performance in SO2 absorption, and such efficiency can be maintained above 98% with 100 mL of this absorption solution at 298 K (flue gas rate of 0.12 m3/h). The highest SO2 absorption by 1.63 g SHA-Na is 0.946 mmol in the process, which is translated to 0.037 g SO2 g−1 SHA-Na. The experimental results indicate that the inlet SO2 concentration slightly influences the SO2 absorption efficiency and significantly influences the desulfurization time. The pH of the absorption solution should be above 3.5 in this process in order to make an effective desulfurization. The products of this process were characterized by Fourier transform infrared spectroscopy and X-ray diffraction. It can be seen that the desulfurization products mainly contain sludge humic acid sediment, which can be used as fertilizer components.http://dx.doi.org/10.1155/2013/573051
spellingShingle Yu Zhao
Guoxin Hu
Removal of Sulfur Dioxide from Flue Gas Using the Sludge Sodium Humate
The Scientific World Journal
title Removal of Sulfur Dioxide from Flue Gas Using the Sludge Sodium Humate
title_full Removal of Sulfur Dioxide from Flue Gas Using the Sludge Sodium Humate
title_fullStr Removal of Sulfur Dioxide from Flue Gas Using the Sludge Sodium Humate
title_full_unstemmed Removal of Sulfur Dioxide from Flue Gas Using the Sludge Sodium Humate
title_short Removal of Sulfur Dioxide from Flue Gas Using the Sludge Sodium Humate
title_sort removal of sulfur dioxide from flue gas using the sludge sodium humate
url http://dx.doi.org/10.1155/2013/573051
work_keys_str_mv AT yuzhao removalofsulfurdioxidefromfluegasusingthesludgesodiumhumate
AT guoxinhu removalofsulfurdioxidefromfluegasusingthesludgesodiumhumate