Removal of Pb (II) by immobilized and free filaments of marine Oscillatoria sp. NTMS01 and Phormidium sp. NTMS02.
Removal of Pb (II) by immobilized and free filaments of marine Oscillatoria sp. NTMS01 and Phormidium sp. NTMS02.
复制标题
通过海洋颤藻的固定和游离丝去除 Pb (II)。
DOI：
10.1007/s00128-011-0348-2
复制
发表时间：
2011
影响因子：
2.7
通讯作者：
Gunasekaran,Muthukumaran
中科院分区：
文献类型：
--
作者：
Kumar,MuthukannanSatheesh;Rajeshwari,Kamaraj;Johnson,Shani;Thajuddin,Nooruddin;Gunasekaran,Muthukumaran
Pb2+removal ability of the immobilized and free filaments of marine cyanobacteriaOscillatoriasp. NTMS01 andPhormidiumsp. NTMS02 was studied using batch experiments. Biosorption of lead by immobilized filaments was studied as a function of pH (2, 4, 6, 8, 10), contact time (5–180 min) and initial lead concentration (1, 3, 5, 7 mg/L) and the removal efficiency of free filaments was studied by culturing in the marine medium with the initial concentration (1, 3, 5, 7 mg/L) at pH 7 and incubated for 10 days. The maximum percentage removal was observed at 25 min for immobilizedOscillatoriasp. NTMS01 and 30 min for immobilizedPhormidiumsp. NTMS02. At 4th and 6th day of incubation, 89% and 77% removal was observed at 1 mg/L of initial lead concentration by free filaments ofOscillatoriasp. NTMS01 andPhormidiumsp.NTMS02 respectively and further the removal was decreased with increasing concentration. Chlorophyll-acontent was decreased in a dose dependent manner. About 40 and 50% reduction of chlorophyll-awas observed at higher concentration inOscillatoriasp. NTMS01 andPhormidiumsp.NTMS02 respectively. The adsorption capacity of immobilizedOscillatoriasp.NTMS01 was found to be (Qmax) 217.39 which is comparatively higher than other sorbents. The Pb2+removal efficiency was performed as described in terms of Langmuir and Freundlich isotherms. These organisms is found to fit better by the Langmuir isotherms.
