Biodegradable Water Retention Polymer for Long-Lasting Soil Moisture
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Solution Overview
Problem
Existing super absorbent polymers (SAPs) used in agriculture are chemically made, causing adverse effects on crops, soil, and soil's moisture and fertilizer capacity, and are not fully biodegradable or degrade too slowly, leading to pollution and inefficiency.
Innovation Solution
A fully biodegradable water retention polymer made from natural polysaccharides like linseed gum, xanthan gum, and tragacanth gum, cross-linked with pectin derived from biological waste and sulfosuccinic acid, which retains water for long durations and reduces water and fertilizer requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If chemically made super absorbent polymers are used, then water absorption capacity is improved, but environmental pollution and harm to crops increase
Solution Approach 1:
The patent changes the chemical composition parameters from synthetic polymers to natural polysaccharides (pectin, chitosan, starch, cellulose, glycogen). This parameter change maintains water absorption capacity while eliminating chemical pollution, as natural polysaccharides are biodegradable and non-toxic to crops and soil.
Solution Approach 2:
The patent uses biodegradable natural polysaccharides that can be safely degraded in the environment, replacing persistent synthetic polymers. These natural polymers decompose into harmless substances, eliminating long-term environmental pollution while maintaining functional performance.
2Duration of action of moving object
If chemically made super absorbent polymers are used, then water retention is improved, but biodegradability deteriorates
Solution Approach 1:
The patent modifies the chemical structure parameters by using cross-linking agents to create a three-dimensional network structure within natural polysaccharides. This structural modification enhances water retention duration while preserving biodegradability, as the cross-linked natural polymer network can be degraded by microorganisms unlike synthetic polymers.
3Strength
If synthetic cross-linking agents are used, then polymer strength is improved, but soil contamination increases
Solution Approach 1:
The patent changes the cross-linking agent parameters from synthetic chemicals to natural substances (metal ions like Ca2+, Mg2+, Al3+, or natural cross-linkers). This parameter change maintains polymer network strength and water retention capacity while avoiding soil contamination, as natural cross-linkers are non-toxic and biodegradable.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The eco-friendly polymer minimizes water use by 60-80%, reduces fertilizer needs by 40-60%, and increases plant growth by 100-300%, while being cost-effective and environmentally safe.
Implementation Method 1
They have a water uptake potential as high as 100,000% of its own weight in a short period of time by osmosis
Implementation Method 2
absorbent polymers... absorb water through capillary action
Implementation Method 3
a cross-linker capable of cross-linking the at least one polysaccharide to the polysaccharide derived from biological waste
Data Source
AI summary
The present invention provides for a water retention polymer capable of retaining water for long durations and in huge amounts and the method of preparing the same. The polymer is capable of releasing the retained water slowly and as per the requirements of the crop and soil. Thus, the water retention polymer minimizes the water requirement during irrigation and other purposes. Further, the said polymer is eco-friendly, pollution free and completely biodegradable. The polymer can be used to grow plants on barren lands and marble slurry. The use of this polymer also minimizes the requirement of fertilizer for the crops. Further, the said water retention polymer is low-priced and hence affordable by farmers. The reduction in water requirement and fertilizer due to the use of this water retention polymer reduces 60% overall production cost for the farmers and hence results in more income generation from agriculture.