Universität zu Köln

Roshanizarmehri, Mohammadreza, Fotovat, Amir ORCID: 0000-0002-5551-7002, Emami, Hojat ORCID: 0000-0002-8437-8419, Kehl, Martin, Hirmas, Daniel R., Hosseinalizadeh, Mohsen ORCID: 0000-0001-7177-8117 and Ramezanian, Navid ORCID: 0000-0003-3266-4277 (2018). Combined effects of polyacrylamide and nanomagnetite amendment on soil and water quality, Khorasan Razavi, Iran. J. Environ. Manage., 223. S. 703 - 713. LONDON: ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD. ISSN 1095-8630

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Abstract

Nanotechnology is increasingly being used to remediate polluted soil and water. However, few studies are available assessing the potential of nanoparticles to bind surface particles, decrease erosion, and minimize the loading of water pollutants from agricultural surface discharge. To investigate this potential, we treated in situ field plots with two practical surface application levels of anionic polyacrylamide (PAM only) with and without nanomagnetite (PAM-NM), examined soil physical properties, and evaluated the impact of this amendment on contaminant sorption and soil erosion control. Polyacrylamide and PAM-NM treatments resulted in 32.2 and 151.9 fold reductions in Mn2+, 1.8 and 2.7 fold for PO43--P, and 2.3 and 1.6 fold for NH4+-N, respectively, compared to the control. Thus, we found that the combination of PAM and NM, had an important inhibitory effect on NH4+-N and PO43--P transport from soil-pollutants which can contribute substantially to the eutrophication of surface water bodies. Additionally, since the treatment, especially at a high concentration of NM, was effective at reducing Mn2+ concentrations in the runoff water, the combination of PAM and NM may be important for mitigating potential risks associated with Mn2+ toxicity. Average sediment contents in the runoff monitored during the rainfall simulation were reduced by 3.6 and 4.2 fold for the low and high concentration PAM-NM treatments when compared to a control. This treatment was only slightly less effective than the PAM-only applications (4.9 and 5.9 fold, respectively). We report similar findings for turbidity of the runoff (2.6-3.3 fold for PAM only and 1.8-2.3 fold for PAM-NM) which was caused by the effects of both PAM and NM on the binding of surface particles corresponding to an increase in aggregate size and stability. Findings from this field-based study show that PAM-modified NM adsorbents can be used to both inhibit erosion and control contaminant transport.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Roshanizarmehri, Mohammadreza UNSPECIFIED UNSPECIFIED UNSPECIFIED Fotovat, Amir UNSPECIFIED orcid.org/0000-0002-5551-7002 UNSPECIFIED Emami, Hojat UNSPECIFIED orcid.org/0000-0002-8437-8419 UNSPECIFIED Kehl, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Hirmas, Daniel R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hosseinalizadeh, Mohsen UNSPECIFIED orcid.org/0000-0001-7177-8117 UNSPECIFIED Ramezanian, Navid UNSPECIFIED orcid.org/0000-0003-3266-4277 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-172314
DOI:	10.1016/j.jenvman.2018.06.061
Journal or Publication Title:	J. Environ. Manage.
Volume:	223
Page Range:	S. 703 - 713
Date:	2018
Publisher:	ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Place of Publication:	LONDON
ISSN:	1095-8630
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language EROSION CONTROL; SIMULATED RAINFALL; MOLECULAR-WEIGHT; PARTICLE-SIZE; RUNOFF WATER; NANOPARTICLES; INFILTRATION; CARBON; SLOPE; STABILIZATION Multiple languages Environmental Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/17231