The phytoremediation of Echinodorus palaefolius (Water Jasmine) in reducing BOD and COD of liquid waste - Batik Industry "X" in Pekalongan

Abstract

The "X" batik industry is a textile industry with industrial waste water discharged into water bodies which causes high pollution in the Lodji river. Data from the Environmental Office of Pekalongan on the status of biological oxygen demand (BOD) and chemical oxygen demand (COD) in the Lodji River are classified as high, namely between 2.741 -1.464 mg/l, exceeding the quality standard <45 mg. Phytoremediation technology is an effort to reduce Biological Oxygen Demand and Chemical Oxygen Demand pollutants. This study aims to determine the ability of phytoremediation with Enchinodorus palaefolius (water jasmine) in reducing levels of biological oxygen demand and chemical oxygen demand in batik industrial wastewater "X". The method used is a quasi experiment with a non-equivalent control group design approach. Analysis of biological oxygen demand and chemical oxygen demand content using the analytical titration method.

Effect of Mercury Stress on the Growth and Lipid Content of Euglena sp. and Echinodorus palaefolius

“…If the plants are in conditions where the mercury concentration exceeds the plant's tolerance ability, this will cause the plants to die. E. palaefolius can accumulate heavy metals in specific organs, such as roots, which will be translocated to the air tissue and enter the xylem, so it does not inhibit plant metabolism (Nur & Slamet, 2020). If the pollutant load is very high, it causes metabolic disturbances and can cause the death of these plants one by one .…”

“…Giving pollutant concen-trations that are too high for a long time can cause chlorosis in plants, inhibiting chloro-phyll synthesis. Heavy metals as pollutants can also inhibit the action of enzymes that catalyze chlorophyll synthesis (Nur & Slamet, 2020). If plant metabolism is disrupted for a long term, it will inhibit the growth of the plant and will fatally cause death in the plant.…”

“…Echinodorus palaefolius is a semi-aquatic plant that comes from the Alismataceae family. E. palaefolius is a herbaceous plant, that has hollow stems, broad leaves, and fibrous roots (Nur & Slamet, 2020). This plant is considered capable as a phytoremediator because of its ability to absorb heavy metals.…”

“…Besides that, E. palaefolius is easy to obtain, economical, and not consumed by people. It has a superior aspect compared to other plants in the purpose of phytoremediation by accumulating toxicants in specific organs so it does not interfere with the course of metabolism (Nur & Slamet, 2020). This plant can retain and accumulate mercury in the endodermis, passing through the Casparian band and entering the cell with an apoplast mechanism.…”

Penerapan Teknologi Constructed Wetland (CW) dalam Menurunkan Kadar Cemaran pada Air Limbah Domestik

“…Kontaminan organik diambil oleh akar tanaman sebagai ion yang larut di atmosfer dan mengambil nutrisi. Melalui saluran pengangkut (xilem), zat yang diterima oleh akar melalui batang menuju batang dan daun (Nur & Slamet, 2020). Banyaknya tanaman juga menentukan penurunan konsentrasi BOD.…”