Encapsulated biochar-based sustained release fertilizer for precision agriculture: a review

DHH Sim, IAW Tan, LLP Lim, BH Hameed - Journal of Cleaner Production, 2021 - Elsevier
The excessive use of conventional fertilizers leads to environmental issues associated with
the loss of nutrient through leaching, volatilization, denitrification and surface run-off. Biochar …

Slow release fertilizer hydrogels: a review

RA Ramli - Polymer Chemistry, 2019 - pubs.rsc.org
In agriculture, there are problems such as the high porosity of soils, high irrigation of water
and low fertilizer retention. Therefore, materials with the ability to absorb a high amount of …

Superabsorbent hydrogels via graft polymerization of acrylic acid from chitosan-cellulose hybrid and their potential in controlled release of soil nutrients

HA Essawy, MBM Ghazy, F Abd El-Hai… - International journal of …, 2016 - Elsevier
Superabsorbent polymers fabricated via grafting polymerization of acrylic acid from chitosan
(CTS) yields materials that suffer from poor mechanical strength. Hybridization of chitosan …

Biodegradable superabsorbent hydrogel for water holding in soil and controlled‐release fertilizer

D Sarmah, N Karak - Journal of Applied Polymer Science, 2020 - Wiley Online Library
The bio‐based environment‐friendly functional polymers are the most desired materials for
the society. Thus, a superabsorbent hydrogel (SAH) of starch‐modified poly (acrylic acid) …

Superabsorbent polymers: A state-of-art review on their classification, synthesis, physicochemical properties, and applications

D Venkatachalam, S Kaliappa - Reviews in Chemical Engineering, 2023 - degruyter.com
Superabsorbent polymers (SAP) and modified natural polymer hydrogels are widely and
increasingly used in agriculture, health care textiles, effluent treatment, drug delivery, tissue …

The nitrogen slow-release fertilizer based on urea incorporating chitosan and poly (vinyl alcohol) blend

PT Vo, HT Nguyen, HT Trinh, VM Nguyen, AT Le… - … Technology & Innovation, 2021 - Elsevier
For mitigating environmental pollution caused by excess usage of urea fertilizer, this paper
reports a new fertilizer formulation, based on urea incorporating chitosan (CS) and poly …

Superabsorbent hydrogels as carriers for the controlled-release of urea: Experiments and a mathematical model describing the release rate

T Zheng, Y Liang, S Ye, Z He - Biosystems Engineering, 2009 - Elsevier
Hydrogel, prepared by swelling superabsorbent in a urea solution and used as carrier for
controlled-release, can significantly reduce the leaching losses of urea. Static release …

Preparation of superabsorbent slow release nitrogen fertilizer by inverse suspension polymerization

M Liu, R Liang, F Zhan, Z Liu, A Niu - Polymer international, 2007 - Wiley Online Library
A superabsorbent, slow release nitrogen fertilizer (SSRNF) was prepared by inverse
suspension polymerization of partially neutralized acrylic acid using N, N′‐methylene …

Synergistic Fertilizers Improved Chemical Properties of Soil in Wheat (Triticum aestivum L.) Field

S Chen, Y Wang, Y Shi - … in Soil Science and Plant Analysis, 2023 - Taylor & Francis
In this study, the efficiency of fertilizers was improved by coating the fertilizers with a
hydrogel formed by the polymerization of itaconic acid (IA), maleic acid (MA), acrylic acid …

Grafting polymerization of acrylic acid onto chitosan-cellulose hybrid and application of the graft as highly efficient ligand for elimination of water hardness: Adsorption …

X Zhou, HA Essawy, MF Mohamed, HS Ibrahim… - Journal of …, 2018 - Elsevier
Grafting copolymerization of acrylic acid from chitosan-cellulose hybrid ((CTS/Cell)-g-PAA)
was conducted and the grafting efficiency and crosslinking level were optimized at 86.5 …