Sri Lanka is an agricultural country, it is important to use water efficiently due to the scarcity of good quality water. The project introduced a novel watering device made from the waste plastic water bottles installed by the side of the plants adapting the drip irrigation system to irrigate to the root zone. The research proved that seawater irrigation with solar evaporation techniques can also be used in modern agriculture especially for low water-required crops. At the same time, farmers will be able to conserve water and reduce the operational cost of cultivation and, when practiced at a large scale, bring salt as a by-product.
Water is an inevitable aspect of not only humans but all living beings. On the other hand, contamination of water results in many acute and chronic illnesses in humans, and environmental pollution. In this study, the iron oxide particles were synthesized in a simple aqueous-based technique using the seed extract of Syzygium cumini as the source of both reducing and capping agent. These particles show the magnetic character therefore, an external magnetic field was applied to separate the particle from the solution. The kinetic study showed that particles removed 92% of Cd ion in 30 minutes from wastewater. Moreover, this research revealed that the synthesized particles could be a very promising material to remove Cd ion from the wastewater.