Work

Recovery of Ammonium onto Wheat Straw To Be Reused as a Slow-Release Fertilizer

Year: 2013

Type: article

Abstract: With the aim of improving fertilizer use efficiency and minimizing the negative impact of nitrogen pollution, a new multifunctional slow-release fertilizer was prepared by recovery of ammonium from aqueous solutions onto a superabsorbent composite. An eco-friendly superabsorbent composite based on wheat straw (WS) was synthesized and used as the carrier to control the release of nutrients. The adsorption studies with NH₄⁺ indicated that the superabsorbent composite showed good affinity for NH₄⁺, with an adsorption capacity of 7.15 mmol g⁻¹ when 20 wt % of WS was incorporated and that the adsorption system can reach equilibrium within 40 min. Afterward, the feasibility of reusing the composite as a multifunctional slow-release nitrogen fertilizer was investigated. The results showed that the product with good water-retention and slow-release capacities could regulate soil acidity and was economical and eco-friendly for application in agriculture and horticulture.

Source: Journal of Agricultural and Food Chemistry

DOI: 10.1021/jf4004016

Authors: Lihua Xie, Shaoyu Lü, Mingzhu Liu, Chunmei Gao, Xinggang Wang, Lan Wu

Institutions: State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Northwest Minzu University

Language: English

Topic: Polymer-Based Agricultural Enhancements

Subfield: Agronomy and Crop Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDGs: Responsible consumption and production, Zero hunger

Open Access status: green

OpenAlex ID: W1978375648

FWCI: 4.442

Cites: 39

Cited by: 36

Related to: 10