Abstract：
:Activated carbon was prepared from an inexpensive and renewable carbon source, Typha orientalis, by H(3)PO(4) activation and then impregnated with different Mn salts and tested for its Neutral Red (NR) adsorption capacities. The amount of Mn impregnated in the activated carbon was influenced by the anion species. Impregnation with Mn decreased the surface area, changed the pore size and crystal structure, and introduced more acidic functional groups such as carboxyl, lactone and phenol groups. The optimum adsorption performance for all the activated carbons was obtained at pH 3.7, Mn-Carbon dose of 0.100g/100ml solution and contact time 4.5h. The adsorption isotherms fit the Langmuir isotherm equation. The kinetic data followed the pseudo-second-order model. The thermodynamic parameters indicated that the processes were spontaneous and endothermic. According to these results, the prepared Mn modified activated carbons are promising adsorbents for the removal of Neutral Red from wastewater.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Zhang J,Shi Q,Zhang C,Xu J,Zhai B,Zhang Bdoi
10.1016/j.biortech.2008.05.018subject
Has Abstractpub_date
2008-12-01 00:00:00pages
8974-80issue
18eissn
0960-8524issn
1873-2976pii
S0960-8524(08)00421-5journal_volume
99pub_type
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