Effect of azo dye on ammonium oxidation process and ammonia-oxidizing bacteria (AOB) in soil

Ammonia-oxidizing bacteria (AOB) play a key role in the production of nitrate-N (NO3 �-N) in terrestrial ecosystems. A study was planned with the aim of assessing the effect of azo dyes released by textile and dyestuff industries on the NH4 +-N oxidation process in soil. The data was analyzed statis...

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Main Authors:	Batool, Samavia, Khalid, Azeem, Khan Chowdhury, Ahmed Jalal, Sarfraz, Maliha, Khaled S., Balkhair, Ashraf, Muhammad Aqeel
Format:	Article
Language:	English
Published:	Royal Society of Chemistry 2015
Subjects:	Q Science (General)
Online Access:	http://irep.iium.edu.my/43196/ http://irep.iium.edu.my/43196/ http://irep.iium.edu.my/43196/ http://irep.iium.edu.my/43196/1/jalal_paper_RSC_advances_8th_april_2015.pdf

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spelling	iium-431962017-12-06T05:09:07Z http://irep.iium.edu.my/43196/ Effect of azo dye on ammonium oxidation process and ammonia-oxidizing bacteria (AOB) in soil Batool, Samavia Khalid, Azeem Khan Chowdhury, Ahmed Jalal Sarfraz, Maliha Khaled S., Balkhair Ashraf, Muhammad Aqeel Q Science (General) Ammonia-oxidizing bacteria (AOB) play a key role in the production of nitrate-N (NO3 �-N) in terrestrial ecosystems. A study was planned with the aim of assessing the effect of azo dyes released by textile and dyestuff industries on the NH4 +-N oxidation process in soil. The data was analyzed statistically using a two factorial completely randomized design (CRD). The results of the study demonstrated that higher doses of reactive black 5 (RB5) significantly suppressed the NH4 +-N oxidation process throughout incubation. Average percent inhibition rates (%) were in the following order: coarse > fine > medium soil. Overall average percent inhibition rates (%) of nitrification in soils exposed to 30 mg-N kg�1 soil ammonium sulfate [(NH4)2SO4] were 46–53% higher than those from 90 mg-N kg�1 soil. This may be attributed to (NH4)2SO4 that acts as a substrate for the proliferation of AOB. NO3 �-N concentration was strongly negatively correlated (r ¼ �0.86) with various amounts of RB5, whereas a strong positive response was observed for the inhibition rate (r ¼ 0.92). A considerable decrease in AOB population (up to 92.58%) was detected for >200 mg kg�1 soil plus N fertilizer, which differed with soil type. This study could be helpful to investigate the effect of contaminants on biochemical processes occurring in soil. Furthermore, the inhibitory effect of azo dye on the NH4 +-N oxidation process suggests that critical concentrations of organic dyes may be used as an inhibitor to release NO3 �-N in soil at a slow rate in order to further reduce NO3 �-N contamination in terrestrial and aquatic ecosystems and to allow less frequent application of ammonium fertilizer in soil as well. Royal Society of Chemistry 2015-04 Article PeerReviewed application/pdf en http://irep.iium.edu.my/43196/1/jalal_paper_RSC_advances_8th_april_2015.pdf Batool, Samavia and Khalid, Azeem and Khan Chowdhury, Ahmed Jalal and Sarfraz, Maliha and Khaled S., Balkhair and Ashraf, Muhammad Aqeel (2015) Effect of azo dye on ammonium oxidation process and ammonia-oxidizing bacteria (AOB) in soil. RSC Advances, 5 (44). pp. 34812-34820. ISSN 2046-2069 http://pubs.rsc.org/en/content/articlelanding/2015/ra/c5ra03768a#!divAbstract 10.1039/C5RA03768A
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Batool, Samavia Khalid, Azeem Khan Chowdhury, Ahmed Jalal Sarfraz, Maliha Khaled S., Balkhair Ashraf, Muhammad Aqeel Effect of azo dye on ammonium oxidation process and ammonia-oxidizing bacteria (AOB) in soil
description	Ammonia-oxidizing bacteria (AOB) play a key role in the production of nitrate-N (NO3 �-N) in terrestrial ecosystems. A study was planned with the aim of assessing the effect of azo dyes released by textile and dyestuff industries on the NH4 +-N oxidation process in soil. The data was analyzed statistically using a two factorial completely randomized design (CRD). The results of the study demonstrated that higher doses of reactive black 5 (RB5) significantly suppressed the NH4 +-N oxidation process throughout incubation. Average percent inhibition rates (%) were in the following order: coarse > fine > medium soil. Overall average percent inhibition rates (%) of nitrification in soils exposed to 30 mg-N kg�1 soil ammonium sulfate [(NH4)2SO4] were 46–53% higher than those from 90 mg-N kg�1 soil. This may be attributed to (NH4)2SO4 that acts as a substrate for the proliferation of AOB. NO3 �-N concentration was strongly negatively correlated (r ¼ �0.86) with various amounts of RB5, whereas a strong positive response was observed for the inhibition rate (r ¼ 0.92). A considerable decrease in AOB population (up to 92.58%) was detected for >200 mg kg�1 soil plus N fertilizer, which differed with soil type. This study could be helpful to investigate the effect of contaminants on biochemical processes occurring in soil. Furthermore, the inhibitory effect of azo dye on the NH4 +-N oxidation process suggests that critical concentrations of organic dyes may be used as an inhibitor to release NO3 �-N in soil at a slow rate in order to further reduce NO3 �-N contamination in terrestrial and aquatic ecosystems and to allow less frequent application of ammonium fertilizer in soil as well.
format	Article
author	Batool, Samavia Khalid, Azeem Khan Chowdhury, Ahmed Jalal Sarfraz, Maliha Khaled S., Balkhair Ashraf, Muhammad Aqeel
author_facet	Batool, Samavia Khalid, Azeem Khan Chowdhury, Ahmed Jalal Sarfraz, Maliha Khaled S., Balkhair Ashraf, Muhammad Aqeel
author_sort	Batool, Samavia
title	Effect of azo dye on ammonium oxidation process and ammonia-oxidizing bacteria (AOB) in soil
title_short	Effect of azo dye on ammonium oxidation process and ammonia-oxidizing bacteria (AOB) in soil
title_full	Effect of azo dye on ammonium oxidation process and ammonia-oxidizing bacteria (AOB) in soil
title_fullStr	Effect of azo dye on ammonium oxidation process and ammonia-oxidizing bacteria (AOB) in soil
title_full_unstemmed	Effect of azo dye on ammonium oxidation process and ammonia-oxidizing bacteria (AOB) in soil
title_sort	effect of azo dye on ammonium oxidation process and ammonia-oxidizing bacteria (aob) in soil
publisher	Royal Society of Chemistry
publishDate	2015
url	http://irep.iium.edu.my/43196/ http://irep.iium.edu.my/43196/ http://irep.iium.edu.my/43196/ http://irep.iium.edu.my/43196/1/jalal_paper_RSC_advances_8th_april_2015.pdf
first_indexed	2023-09-18T21:01:33Z
last_indexed	2023-09-18T21:01:33Z
_version_	1777410657318076416

Effect of azo dye on ammonium oxidation process and ammonia-oxidizing bacteria (AOB) in soil

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