【摘要】 以具有较高比表面积及较大孔径的介孔分子筛SBA-15、Rod-SBA-15为载体,利用物理吸附的方法吸附废水中的氨氮,Rod-SBA-15由于具有较大的比表面积及孔径而具有较高的脱除效率,还通过测定不同分子筛用量、不同pH值及不同静置时间条件下的吸附效率来确定优选吸附条件,结果表明,分子筛用量优选3 mg/mL,pH值优选6～7,吸附时间优选20 min。更多还原

【Abstract】 Mesoporous molecular sieve SBA-15 and Rod-SBA-15 with large pores and high surface area are used as the carrier to absorb ammonia nitrogen in wastewater by using physical adsorption as a method and the results show that Rod-SBA-15 has the higher absorbing efficiency because of larger BET surface area and larger average pore diameter.In this paper,the absorbing efficiency with different mesoporous molecular sieve mass,different pH value and different time have been measured to determine optimum absorption conditions.The results show that: the optimum mesoporous molecular sieve mass is 3 mg/mL,the optimum pH value is 6-7 and the optimum time is 20 min.更多还原