Title of article :
Adsorption of Copper (II) onto activated carbons from sewage sludge by microwave-induced phosphoric acid and zinc chloride activation Original Research Article
Author/Authors :
Xuejiang Wang، نويسنده , , Xia Liang، نويسنده , , Yin Wang، نويسنده , , Xin Wang، نويسنده , , Mian Liu ، نويسنده , , Daqiang Yin، نويسنده , , Siqing Xia، نويسنده , , Jianfu Zhao، نويسنده , , Yalei Zhang، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
7
From page :
231
To page :
237
Abstract :
Sewage sludge-based activated carbons were prepared with microwave-induced activation process using phosphoric (SP) or zinc chloride (SZ) as the chemical activating agents. The physicochemical properties of the carbons were carried out. The effectiveness of the carbons prepared in adsorption of Cu(II) has been studied as a function of pH, agitation time and temperature. The results showed that the adsorption of Cu(II) onto SP and SZ was maximal at about pH 5.0. The rates of adsorption were found to conform to the pseudo-second-order kinetic model. The intra-particle diffusion was identified to be the rate-limiting step. Langmuir isotherm showed better fit than Freundlich isotherm for all activated carbon samples and the maximum adsorption capacities of Cu(II) were 7.73 and 10.56 mg/g for SP and SZ, respectively. The thermodynamics parameters such as △G0, △H0, △S0 were also evaluated. The SZ carbon was found to be both effective and economically viable.
Keywords :
Microwave , Sewage sludge , Adsorption , Heavy metal , Activated carbon
Journal title :
Desalination
Serial Year :
2011
Journal title :
Desalination
Record number :
1114794
Link To Document :
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