Malaysian Journal of Analytical Sciences Vol 25 No 6 (2021): 977 - 986

 

 

 

 

POTENTIAL OF Epipremnum aureum IN REDUCTION OF CHEMICAL OXYGEN DEMAND IN WASTEWATER

 

(Potensi Epipremnum aureum dalam Pengurangan Permintaan Oksigen Kimia dalam Air Sisa Buangan)

 

Lee Shi Qing, Rozidaini Mohd Ghazi*, Marinah Muhammad

 

Faculty of Earth Science,

Universiti Malaysia Kelantan Jeli Campus, 17600 Jeli, Kelantan, Malaysia

 

*Corresponding author:  rozidaini@umk.edu.my

 

 

Received: 15 September 2021; Accepted: 28 October 2021; Published:  27 December 2021

 

 

Abstract

High chemical oxygen demand (COD) levels in water indicate a vast amount of oxidizable matter that consumes a lot of dissolved oxygen in water. This has an adverse impact on both aquatic ecosystems and human health. Wastewater from the fish cracker industry typically has high organic content and high COD value. This study focuses on the potential of Epipremnum aureum as a new plant for reducing COD in fish cracker industry wastewater. Due to its relative abundance and cost-effectiveness, Epipremnum aureum (E. aureum) was selected as a phytoremediation plant. The parameters affecting COD reduction, such as pH of wastewater, retention time, initial COD concentration, and plant number used in phytoremediation were investigated. After ten days of retention time with two E. aureum plants, the highest COD reduction was 99.42% in pH 6 of 75% wastewater. E. aureum produced new shoots in 50% (v/v) wastewater concentration after 14 days of retention time, indicating that the plant is suitable for planting in polluted water or industrial effluent. Therefore, E. aureum can be categorized as a pollution resistance plant. This study proves that E. aureum can be utilized as an alternative method for COD reduction in wastewater.

 

Keywords:  chemical oxygen demand, phytoremediation, Epipremnum aureum

 

Abstrak

Tahap permintaan oksigen kimia tinggi (COD) dalam air menunjukkan sebahagian besar bahan teroksida yang menggunakan banyak oksigen terlarut di dalam air. Ini mengakibatkan kesan buruk terhadap ekosistem akuatik dan kesihatan manusia. Air sisa dari industri keropok ikan biasanya mempunyai kandungan organik yang tinggi dan nilai COD yang tinggi. Kajian ini memberi tumpuan kepada potensi Epipremnum aureum sebagai pokok baharu untuk pengurangan COD dalam air sisa industri keropok ikan. Epipremnum aureum (E. aureum) dipilih sebagai pokok untuk fitoremediasi kerana ianya banyak dan menjimatkan. Parameter yang mempengaruhi pengurangan COD seperti pH air buangan, masa hubungan, kepekatan awal COD dan jumlah pokok yang digunakan dalam fitoremediasi telah diselidik. Selepas sepuluh hari masa hubungan menggunakan dua pokok E. aureum, penurunan COD tertinggi adalah 99.42% pada pH 6 dalam 75% air sisa. E. aureum menghasilkan pucuk baru dalam air sisa pada kepekatan 50% setelah 14 hari masa hubungan, menunjukkan bahawa pokok itu sesuai untuk ditanam dalam air tercemar atau air buangan industri. Oleh itu, E. aureum boleh dikategorikan sebagai pokok yang ada ketahanan pencemaran. Berdasarkan kajian ini, E. aureum terbukti menjadi kaedah alternatif untuk pengurangan COD dalam air sisa.

 

Kata kunci:  permintaan oksigen kimia, fitoremediasi, Epipremnum aureum

 

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