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Liu M, Li J, Ren B, Liu Y, Liu Z, Zhou T, Cheng D. The water-retaining functional slow-release fertilizer modified by carboxymethyl chitosan. Carbohydr Polym 2024; 328:121744. [PMID: 38220354 DOI: 10.1016/j.carbpol.2023.121744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Revised: 12/02/2023] [Accepted: 12/26/2023] [Indexed: 01/16/2024]
Abstract
To solve the problem of shortage of agricultural water resources and low utilization rate of fertilizer, a slow-release fertilizer based on chitosan modified water retention function was developed. Solution polymerization and semi-interpenetrating network technology were used to load urea aldehyde into carboxymethyl chitosan superabsorbent resin network. This technology realizes the simultaneous slow release of nutrients and water by using modified chitosan, which has important implications for the application of chitosan in agriculture to regulate the soil water and fertilizer conditions. The optimal preparation conditions were: MBA 0.07 %, KPS 0.8 %, AM to AA mass ratio of 0.3:1, CMC content of 10 %, AA neutralization degree 85 %, UF 20 %, AA+AM mass sum of 10 g, reaction temperature 70 °C and reaction time 2 h. The maximum water absorption rate of the optimized NC reached 172.3 g/g. The cumulative release of nitrogen in 30 days was 83.67 %. The application of NC in sandy soil promoted seed germination and growth. The comprehensive results indicate that NC has broad application prospects in arid areas based on its excellent water retention and nutrient release performance.
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Affiliation(s)
- Mingshang Liu
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, National Engineering & Technology Research Center for Slow and Controlled Release Fertilizers, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Jinxi Li
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, National Engineering & Technology Research Center for Slow and Controlled Release Fertilizers, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Bincheng Ren
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, National Engineering & Technology Research Center for Slow and Controlled Release Fertilizers, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Yan Liu
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, National Engineering & Technology Research Center for Slow and Controlled Release Fertilizers, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Zihan Liu
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, National Engineering & Technology Research Center for Slow and Controlled Release Fertilizers, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Tongtong Zhou
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, National Engineering & Technology Research Center for Slow and Controlled Release Fertilizers, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China
| | - Dongdong Cheng
- National Engineering Research Center for Efficient Utilization of Soil and Fertilizer Resources, National Engineering & Technology Research Center for Slow and Controlled Release Fertilizers, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, PR China.
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Li J, Nie Z, Fan Z, Li C, Liu B, Hua Q, Hou C. Biochemical Fulvic Acid Modification for Phosphate Crystal Inhibition in Water and Fertilizer Integration. MATERIALS 2022; 15:ma15031174. [PMID: 35161118 PMCID: PMC8840660 DOI: 10.3390/ma15031174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2021] [Revised: 01/23/2022] [Accepted: 01/24/2022] [Indexed: 02/04/2023]
Abstract
Biochemical fulvic acid (BFA), produced by organic wastes composting, is the complex organic matter with various functional groups. A novel modified biochemical fulvic acid (MBFA) which possessed stronger chelating ability had been synthesized by the grafting copolymerization of BFA and acrylic acid (AA). Results showed that MBFA effectively inhibited the crystallization of calcium phosphate and increased the concentration of phosphate in water solution. The optimum reaction conditions optimized by Box–Behnken design and response surface methodology were reaction temperature 69.24 °C, the mass of monomer to fulvic acid ratio 0.713, the initiator dosage 19.78%, and phosphate crystal-inhibition extent was 96.89%. IR spectra demonstrated AA was grafted onto BFA. XRD data and SEM images appeared the formation and growth of calcium phosphate crystals was effectively inhibited by MBFA.
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Affiliation(s)
- Jianyun Li
- School of Civil Engineering and Architecture, Zhengzhou University of Aeronautics, Zhengzhou 450046, China; (J.L.); (C.L.)
| | - Zihan Nie
- School of Chemical Engineering, National Center for Research and Popularization on Calcium, Magnesium, Phosphate & Compound Fertilizer Technology, Zhengzhou University, Zhengzhou 450001, China; (B.L.); (Q.H.); (C.H.)
- Correspondence:
| | - Zhao Fan
- School of Environmental Economics, Henan Finance University, Zhengzhou 450046, China;
| | - Chunguang Li
- School of Civil Engineering and Architecture, Zhengzhou University of Aeronautics, Zhengzhou 450046, China; (J.L.); (C.L.)
| | - Bingbing Liu
- School of Chemical Engineering, National Center for Research and Popularization on Calcium, Magnesium, Phosphate & Compound Fertilizer Technology, Zhengzhou University, Zhengzhou 450001, China; (B.L.); (Q.H.); (C.H.)
| | - Quanxian Hua
- School of Chemical Engineering, National Center for Research and Popularization on Calcium, Magnesium, Phosphate & Compound Fertilizer Technology, Zhengzhou University, Zhengzhou 450001, China; (B.L.); (Q.H.); (C.H.)
| | - Cuihong Hou
- School of Chemical Engineering, National Center for Research and Popularization on Calcium, Magnesium, Phosphate & Compound Fertilizer Technology, Zhengzhou University, Zhengzhou 450001, China; (B.L.); (Q.H.); (C.H.)
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