Paper Title
Phytoremediation of Laundry Waste Using Water Hyacinth Plants (Eichhornia crassipes) and Kayu Apu (Pistia stratiotes L.)

Abstract
Laundry waste is one of the contributors to the type of pollution that occurs in the aquatic environment. The majority of this waste is disposed of directly into drainage channels and has great potential to cause environmental damage if disposed of in large quantities. Pollution caused by laundry waste can cause damage to aquatic ecosystems, including eutrophication caused by excessive levels of detergent and phosphate in waters. Based on these problems, research is needed on household waste processing that is effective, efficient and does not require expensive costs, namely using phytoremediation techniques (using plants as a solution to clean polluted water). The plants used in this research were ludah mertua (Eichhornia crassipes) and kayu apu (Pistia stratiotes L). These plants can live in polluted environments and are suitable for use in waste processing. The research objectives are (1) Analyzing the quality of laundry wastewater produced and (2) Knowing the effectiveness of ludah mertua and kayu apu plants in reducing the pollutant content of laundry wastewater. The research was carried out by analyzing the quantity and quality of laundry wastewater. Parameters analyzed include BOD, surfactant, TSS, phosphate, temperature and pH. The research consisted of several stages including: acclimatization stage, water quality testing, range finding test (RFT), and phytoremediation testing. The main aim of this research is as a business step in exploiting the potential of lidah mertua (Eichhornia crassipes) and kayu apu (Pistia stratiotes L). in phytoremediation of laundry waste which up to now has only been thrown directly into water bodies. Utilizing kayu apu and ludah mertua plants is an effective processing method for reducing pollutant levels in laundry waste, including surfactants, phosphates, BOD and TSS. In kayu apu plants, the percent reduction in levels of each parameter was BOD of 83.79%, TSS of 93.81%, Surfactant of 96.22%, Phosphate of 98.38%. In ludah mertua plants, the percent reduction in levels of each parameter was BOD of 84.94%, TSS of 90.85%, Surfactant of 97.26%, Phosphate of 97.99%. The maximum parameter allowance occurs on day 9, which means the plant will work optimally in a certain time period. Keywords - Phytoremediation, Household Waste, Lidah Mertua, Kayu Apu.