【摘要】 初步研究了东京根霉(Rhizopus tonkinenses)对重金属离子铜、镍的吸附性能.从东京根霉的预处理、溶液的pH值、离子初始浓度、吸附时间、吸附温度等方面对吸附能力的影响进行吸附试验,得出东京根霉对铜、镍离子吸附的最佳条件组合.研究结果显示,用NaOH处理后,能大大提高根霉干菌体的吸附能力.在pH=5、温度为25℃、吸附时间为6h对铜进行吸附,吸附率达到94.06%,最大吸附量为18.9 mg.g-1;在pH=6、温度为25℃、吸附时间为4h对镍进行吸附,吸附率达到80.2%,最大吸附量为16 mg.g-1.更多还原

【Abstract】 The primary objective of the investigation is to examine the factors affecting biosorption of Rhizopus tonkinenses to heavy metals ion Ni²⁺,Cu²⁺.These factors include chemical pretreatments of biomass,pH,initial concentration,absorption time and absorption temperature etc.Pretreatments of biomass with NaOH further increase its biosorption capacity under optimum biosorption conditions,the maximum uptake capacity of Cu²⁺ being 18.9mg·g¹at pH=5,25℃,6h,the rate of adsorption reaching 94.06%;The maximum uptake capacity of Ni²⁺is 16 mg·g^-1 at pH=6,25℃,4 h and the rate of adsorption reaches 80.2%.更多还原