Bansiwal, Amit Kumar and Rayalu, Sadhana Suresh and Labhsetwar, Nitin and Juwarkar, Asha Ashok and Devotta, Sukumar (2006) Surfactant-Modified Zeolite as a Slow Release Fertilizer for Phosphorus. Journal of Agricultural and Food Chemistry (54). pp. 4773-4779.

[img] PDF - Published Version
Restricted to Registered users only
Available under License Creative Commons Attribution Non-commercial.

Download (347Kb) | Request a copy


The feasibility of using surfactant-modified zeolite(SMZ)as a carrier for fertilizer and for slow release of phosphorus (P)was investigated. Zeolite-A was modified by using hexadecytrimethylammonium bromide, a cationic surfactant, to modify its surface to increase its capacity to retainanion, namely, infrared, and scanning electron microscopy to study the effect of surfactant modification. Zeolite-A and SMZ were then subjected to P loading by treating them with fertilizer(KH2PO4). It was observed that the P loading on SMZ increased by a factor of 4.9 as compared to the unmodified Zeolite-A. A comparative study of the release of P from fertilizer-loaded unmodified zeolite-A and SMZ and from solid KH2PO4 was performed using the conatant flow percolation reactor. The result show that the P supply from fertilizer-loaded SMZ was available even after 1080 h of continuous percolation, whwreas P from KH2PO4 was exhausted within 264 h. The result indicate that SMZ is a good sorbent for PO4, and a slow release of P was achievable. These properties suggest that SMZ has a great potential as the fertilizer carrier for slow relese of P.

Item Type: Article
Subjects: Agriculture
Chemistry, Chemical Technology
Depositing User: Users 4 not found.
Date Deposited: 19 Oct 2011 07:38
Last Modified: 11 May 2017 09:44

Actions (login required)

View Item View Item