Journal
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
Volume 2, Issue 7, Pages 1871-1878Publisher
AMER CHEMICAL SOC
DOI: 10.1021/sc500204z
Keywords
Mulberry branch; Sodium alginate; Urea slow-release; Water retention; Eco-friendly fertilizer
Categories
Funding
- National Natural Science Foundation of China [51172207, 61179034]
- Science and Technology Program of Zhejiang Province of China [2013C33011, 2014C31132]
- Open-ended Fund of Zhejiang Provincial Top Key Discipline of New Materials and Process Engineering [20110946]
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Development of a compound fertilizer for agricultural and horticultural applications remains an important challenge in the field of biomass synthesis on account of its raw material source and biodegradability. In this work, an eco-friendly slow-release urea fertilizer (SRUF) employing mulberry branch-g-poly(acrylic acid-co-acrylamide) (MB/P(AA-co-AM)) superabsorbent was prepared. The MB/P(AA-co-AM) superabsorbent was blended with sodium alginate, urea, and CaCl2 solutions to accomplish this synthesis process. The synthesis conditions of the SRUF and its application performance were examined. The results showed that under the optimal synthesis conditions the water absorbency and water absorbency rate of the SRUF reached 420.0 g/g and 60.0 (g/g)/min in deionized water, respectively. The water retention of the SRUF was 7.2 wt % after 25 d. The urea release in deionized water and soil both exhibited a typical slow release behavior. A degradation rate of 32.0 wt % was attained for the SRUF while it was buried for 90 d in soil.
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