Yu Changwu Gao Chao Wang Lin, . ADSORPTION PERFORMANCE OF MOLYBDENUM ONTO HUMUS[J]. ENVIRONMENTAL ENGINEERING , 2015, 33(6): 10-14. doi: 10.13205/j.hjgc.201506003
Citation:
Yu Changwu Gao Chao Wang Lin, . ADSORPTION PERFORMANCE OF MOLYBDENUM ONTO HUMUS[J]. ENVIRONMENTAL ENGINEERING , 2015, 33(6): 10-14. doi: 10.13205/j.hjgc.201506003
Yu Changwu Gao Chao Wang Lin, . ADSORPTION PERFORMANCE OF MOLYBDENUM ONTO HUMUS[J]. ENVIRONMENTAL ENGINEERING , 2015, 33(6): 10-14. doi: 10.13205/j.hjgc.201506003
Citation:
Yu Changwu Gao Chao Wang Lin, . ADSORPTION PERFORMANCE OF MOLYBDENUM ONTO HUMUS[J]. ENVIRONMENTAL ENGINEERING , 2015, 33(6): 10-14. doi: 10.13205/j.hjgc.201506003
ADSORPTION PERFORMANCE OF MOLYBDENUM ONTO HUMUS
Abstract
The adsorption of molybdenum onto humus was studied by simulation． pH，time，temperature，dosing quantity and
competitive anions were investigated during adsorption process． The adsorption mechanism was researched by the method of
adsorption isotherm and kinetic model． The results showed that the removal efficiency of molybdenum from solution attached
90% at least，with pH ＜ 3，adsorptim time of 30 min，humus dosage 1 g，and a temperature of 25 ～ 30 ℃． The equilibrium
adsorption capacity was 1. 014 mg/g at the optimum conditions． Phosphate appeared to compete strongly with MoO2 －
4 and the
removal efficiency of molybdenum decreased from over 90% to 60% or so． Silicate and sulfate did a negligible effect on the
sorption of MoO2 －
4 ． The Langmuir isotherm adsorption model and the pseudo second-order rate equation could fit the
experimental data well． It meant that adsorption molybdenum onto humus was chemical adsorption and was controlled by
chemical reactor． The conclusion showed that humus could be applied in adsorption of molybdenum in the future．
References
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