TREATMENT OF METHYLENE BLUE IN WASTEWATER USING Scirpus grossus

Abstract

Phytoremediation is an emerging technology that should be considered for the remediation of contaminated sites because of its aesthetic advantages and long-term applicability. The possibility of Scirpus grossus for degradation of a basic dye, methylene blue (MB) was investigated. The effect of the operational parameter of different dye concentrations (0, 200, 400, 600, 800 and 1000 mg/L) was determined, and the water quality parameters namely pH, dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD) and total organic carbon (TOC) were monitored. The UV-Visible absorption confirmed the degradation of MB within 72 days. The removal efficiency of methylene blue dye from synthetic wastewater was determined to be in the range of 86 -38% for all treatments at different concentrations (200 -1000 mg/L) respectively. Furthermore, the highest removals for BOD, COD in 400 mg/L and TOC in 200 mg/L MB were 69, 58 and 63% respectively. Keywords: phytoremediation, Scirpus grossus, methylene blue, decolourisation, water quality AbstrakFitopemulihan merupakan teknologi baru yang perlu dipertimbangkan untuk pemulihan tapak tercemar kerana kelebihan estetik dan kebolehgunaan bagi jangka panjang. Kemungkinan Scirpus grossus untuk degradasi pewarna asas, metilena biru (MB) telah dikaji. Kesan parameter operasiiaitu kepekatan pewarna yang berbeza (0, 200, 400, 600, 800 dan 1000 mg/L) ditentukan dan parameter kualiti air iaitu pH, oksigen terlarut (DO), permintaan oksigen biokimia (BOD), permintaan oksigen kimia (COD) dan jumlah karbon organic (TOC) dipantau. Penyerapan UV cahaya nampak mengesahkan degradasi MB dalam masa 72 hari. Kecekapan penyingkiran pewarna metilena biru daripada air sisa sintetik telah ditentukan dalam lingkungan 38 -86% untuk semua rawatan dalam kepekatan yang berbeza (200 -1000 mg/L) masing-masing. Tambahan pula, penyingkiran tertinggi bagi BOD, COD dalam 400 mg/L dan TOC dalam 200 mg/L MB masing-masing adalah 69, 58 dan 63%.

Life-Cycle Assessment of Gingko-Wood Three-Dimensional Membrane for Wastewater Treatment

“…The 3D Pd NPs/wood membrane was used as a filter for this MB-contaminated aqueous solution. Ultraviolet-visible (UV–vis) spectroscopy measurements were conducted before and after filtration by employing a LAMBDA 650 UV–vis spectrophotometer. , The MB concentration was monitored with an absorption peak at 664 nm, and the MB degradation efficiency was calculated as follows where C 0 is the initial MB concentration, and C is the MB concentration after filtration. Scanning electron microscopy (SEM-Quanta FEG-250) was used to study the internal structure of the 3D wood.…”

“…Ultraviolet-visible (UV− vis) spectroscopy measurements were conducted before and after filtration by employing a LAMBDA 650 UV−vis spectrophotometer. 4,36 The MB concentration was monitored with an absorption peak at 664 nm, and the MB degradation efficiency was calculated as follows…”

Phytoremediation of Ex Mining Lake Water in Constructed Wetland by Perennial Plants

“…This species often found growing and spreading open in large colonies and tight clusters in water. It has been proven to remediate heavy metal of Pb (Tangahu et al, 2013), Fe and Al (Ismail et al, 2017), dye (Almaamary et al, 2017), colour (Ahmad et al, 2017) and hydrocarbon (Al-Baldawi et al, 2015) effectively. E. dulcis (Chinese water chestnut) is also an annual plant which grows in swamps or ponds (Minh, 2014).…”