Water retention and slow release studies of a salep-based hydrogel nanocomposite reinforced with montmorillonite clay

2018 ◽  
Vol 42 (4) ◽  
pp. 2758-2766 ◽  
Author(s):  
Ali Olad ◽  
Hamid Zebhi ◽  
Dariush Salari ◽  
Abdolreza Mirmohseni ◽  
Adel Reyhani Tabar
Keyword(s):  
Water Retention ◽  
High Efficiency ◽  
Slow Release ◽  
Montmorillonite Clay ◽  
Release Studies ◽  
Npk Fertilizer ◽  
Hydrogel Nanocomposite

The synthesized nanocomposites slowly release fertilizer which can act as a high-efficiency NPK fertilizer formulation.

Slow-release NPK fertilizer encapsulated by carboxymethyl cellulose-based nanocomposite with the function of water retention in soil

2018 ◽  
Vol 90 ◽  
pp. 333-340 ◽  
Author(s):  
Ali Olad ◽  
Hamid Zebhi ◽  
Dariush Salari ◽  
Abdolreza Mirmohseni ◽  
Adel Reyhani Tabar
Keyword(s):  
Carboxymethyl Cellulose ◽  
Water Retention ◽  
Slow Release ◽  
Npk Fertilizer

scholarly journals Kinetika Slow Release Pupuk Urea Berlapis Chitosan Termodifikasi

2017 ◽  
Vol 1 (2) ◽  
Author(s):  
YC Danarto ◽  
Anggita Nugrahey ◽  
Sela Murni Noviani
Keyword(s):  
Water Retention ◽  
Slow Release ◽  
Zero Order ◽  
Release Profile ◽  
Nitrogen Release ◽  
Diffusion Kinetic ◽  
Urea Fertilizer ◽  
First Order ◽  
Modified Chitosan ◽  
Urea Content

<p>During this time, the use of urea is not efficient, because about 40-70% of nitrogen in the fertilizer is not absorbed by plants. In order to increase the effectivity of nitrogen release in urea fertilizer, it needs to be coated with modified chitosan as slow releasing agent to form a hydrogel material by forming a cross linking with glutaraldehyde cross-linker.The aims of this research is to study the mechanism and the appropriate kinetic model of nitrogen release in slow releasing fertilizer of modified chitosan. This research was conducted by analyzing the ability of bio-hydrogel by calculating the percentage of swelling ratio and water retention of hydrogel and the nitrogen release in slow releasing fertilizer both in the soil and water. The experiments were conducted by varying the amount of urea used which  30 gram, 40 gram, 50 gram, 60 gram and 70 gram of urea fertilizer. The The release profile is then plotted on several models of diffusion kinetic such as zero order, first order, higuchi and korsmeyer peppas. The appropriate model of diffusion kinetic is chosen by the largest correction factor (R2).The results showed that nitrogen release of the slow releasing fertilizer in the soil with 50% urea content  and  the  water  followed  korsmeyer  peppas  model  with  fickian  mechanism. Nitrogen release in the soil with urea content of 30%, 40%, 60%, and 70% followed the korsmeyer peppas model with nonfickian mechanism.</p>

Slow Release NPK Fertilizer Preparation from Natural Resources

2019 ◽  
Vol 948 ◽  
pp. 43-48 ◽  
Author(s):  
Windia Hanifah ◽  
Chandra Wahyu Purnomo ◽  
Suryo Purwono
Keyword(s):  
Slow Release ◽  
Nutrient Content ◽  
Release Profile ◽  
Chicken Manure ◽  
Equal Weight ◽  
Nutrient Sources ◽  
Slow Release Fertilizer ◽  
N Source ◽  
Npk Fertilizer ◽  
Release Method

Preparation of Natural multi-nutrient Slow Release Fertilizer (NSRF) aims to reduce the environmental burden from some waste and increase the efficiency of fertilizer in releasing nutrient content. In this study,slow-release fertilizer was prepared from all natural components from waste which aredried chicken manure (N source), struvite (P source), and palm empty fruit bunch ash (K source). The equal weight of the three main nutrient sources was used with the addition of starch powder as the binder by 10%, 15% and 20% of the total nutrient mixture. The mixture of all nutrient with binder was granulated using pan granulator. Dried NSRF granule was tested using sand bed release method to observe the release profile of the contained nutrient. Based on the results of a 30-day leaching study, it was found that increasing concentration of binder will reduce the release of the nutrient from NSRF granules.

Application of Slow-Release Fertilizer with the Function of Water-Absorption and Water-Retention in Position Engineering Camouflage

2011 ◽  
Vol 117-119 ◽  
pp. 1100-1102
Author(s):  
Shao Hong Li ◽  
Yue Guo Shen ◽  
Zhong Feng Shi
Keyword(s):  
Water Absorption ◽  
Water Retention ◽  
Slow Release ◽  
Rock Slopes ◽  
Slow Release Fertilizer ◽  
The Earth ◽  
Earth Slopes

The construction of position engineering causes a lot of naked earth slopes and rock slopes. Because the earth and rock lack of water absorption and water retention, traditional vegetation camouflage can not make it. The slow-release fertilizer with the function of water-absorption and water-retention make up it and which will be applied widely in vegetation camouflage of position engineering.

Preparation and Characterization of Bacterial Cellulose/TiO2 Hydrogel Nanocomposite

2016 ◽  
Vol 43 ◽  
pp. 73-80 ◽  
Author(s):  
Ricardo Brandes ◽  
Letícia de Souza ◽  
Vanessa Vargas ◽  
Eliana Oliveira ◽  
Alexandre Mikowski ◽  
...  
Keyword(s):  
Bacterial Cellulose ◽  
Water Retention ◽  
Morphological Analysis ◽  
Sol Gel ◽  
Absorption Capacity ◽  
Ex Situ ◽  
High Tensile Strength ◽  
Hydrogel Nanocomposite ◽  
High Absorption

Bacterial cellulose (BC) is a biopolymer with interesting properties, such as biocompatibility, high tensile strength, high absorption capacity, water retention and high crystallinity. Nanoparticles of titanium dioxide (TiO2) are extremely important in electrical applications, photocatalysis, sensors and biomedical areas. Multifunctional materials, based on bacterial cellulose, with differentiated properties can be designed from the BC/TiO2 nanocomposite by ex situ method of sol-gel immersion. It was manufactured as a nanocomposite consisting of BC/TiO2 hydrogel. Characterizations were carried out by scanning electron microscope (SEM), energy dispersive spectroscopy (EDS) and fourier transform infrared spectroscopy (FTIR). The morphological analysis of nanocomposite revealed the existence of molecular interaction and adhesion between TiO2 nanoparticles and cellulosic nanofibers matrix, where the presence of Ti peaks in EDS spectra was discovered, proving the successful incorporation of nanoparticles. The FTIR showed modification on the functional groups, suggesting interaction between the components. The manufacturing of a BC/TiO2 nanocomposite by method of sol-gel immersion has a great potential for future applications.

Sign in / Sign up

Export Citation Format

Share Document