Abstract: Choosing the coconut shell activated carbon and Zn2+,Cd2+,Pb2+ and Cu2+ this 4 kinds of heavy metal ions as the research object,the activated carbon adsorption of heavy metal ions in waste water was studied.The difference of adsorption capacity was analyzed under different pH,the dosage of activated carbon,the oscillation time and temperature conditions for heavy metal ions.Under simulated wastewater condition,the experimental results showed that:(1)With the increase of pH,the adsorption volume of activated carbon increased.When pH value increased to alkaline,the adsorption subsided.Activated carbon adsorption ability of heavy metal ions in pH value of 7 solution was strongest.(2)Activated carbon additive quantity was 6g,its adsorption ability of four kinds of heavy metal ions saturated,and the most significant changes in the adsorption of Zn2+.(3)When the oscillation time was 200min,activated carbon adsorption was saturated.Among them,the adsorption capacity from strong to weak on four kinds of heavy metal ions were:Zn2+>Cd2+>Pb2+>Cu2+.(4)The adsorption ability on four kinds of metal ions was best at the 30℃ temperature.
邓志华, 刘佩琪, 邓清, 李春阳. 椰壳活性炭对水中重金属离子的吸附研究[J]. 化工新型材料, 2018, 46(3): 273-276.
Deng Zhihua, Liu Peiqi, Deng Qing, Li Chunyang. Research on the adsorption of coconut shell activated carbon for heavy metal ion in the water. New Chemical Materials, 2018, 46(3): 273-276.