Abstract
Sandy soil has a low ability to absorb and store low water, low nutrient content, and a high water evaporation rate, so it is not suitable to be used as agricultural land. Superabsorbents can be used to overcome these weaknesses. The purpose of this study was to measure the abilities of the superabsorbents, including water holding, swelling, and water retention of sandy soil enriched with superabsorbent, and to analyze the chitosan-graft-poly(acrylic acid) superabsorbent characteristics. The superabsorbent was prepared by mixing a chitosan solution with ammonium persulfate as an initiator and acrylic acid, which had been neutralized with KOH. Then, the mixture was cross-linked with N,N′-methylenebisacrylamide (MBA). The resulting superabsorbent gel was dried in an oven and then crushed for analysis. The results showed that an increase in chitosan concentration increased the gel fraction, swelling, reusability, and water holding. Meanwhile, an increase in chitosan concentration decreased water retention in sandy soils. The swelling kinetics can be predicted using the pseudo-second-order model with high accuracy (R2 value of 0.99).
Funder
Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia
Subject
Polymers and Plastics,General Chemistry
Reference43 articles.
1. Mycorrhizae and a Soil Ameliorant on Improving the Characteristics of Sandy Soil;Herawati;Sains Tanah,2021
2. Soil and Environmental Issues in Sandy Soils;Huang;Earth-Sci. Rev.,2020
3. Synthesis of Superabsorbent Copolymers as Water Manageable Materials;Mohana Raju;Polym. Int.,2003
4. Synthesis of Cellulose-Based Superabsorbent Hydrogel from Rice Husk Using a Microwave;Abdulhameed;Am. J. Mater. Sci.,2020
5. Superabsorbent Hydrogels Based on Cellulose for Smart Swelling and Controllable Delivery;Chang;Eur. Polym. J.,2010
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