本文選題：牡蠣殼 + 改性材料�。� 參考：《化工進(jìn)展》2017年05期

【摘要】：以硫酸亞鐵為鐵源,通過硼氫化鉀原位還原-負(fù)載制得納米鐵改性牡蠣殼材料,并對其微觀結(jié)構(gòu)進(jìn)行表征,探討改性后的牡蠣殼材料對持久性有機(jī)物多氯聯(lián)苯(PCBs)的吸附性能。實(shí)驗(yàn)結(jié)果表明:改性牡蠣殼材料中納米鐵顆粒粒徑均勻且分散度較高,改性后的牡蠣殼材料具有很好的PCBs廢水處理能力;當(dāng)處理時間為180min,溶液溫度和初始PCBs濃度分別為25℃和5mg/L時,改性材料對PCBs的吸附率達(dá)96%,吸附量為2.97mg/g。改性材料可作為一種廉價(jià)、高效的持久性有機(jī)廢水吸附劑,具有很好的工業(yè)應(yīng)用前景。吸附等溫線研究表明,Langmuir方程能較好地描述改性材料的PCBs吸附行為,吸附較容易,升高溫度有利于吸附;從吸附動力學(xué)角度分析,吸附過程符合準(zhǔn)二級動力學(xué)模型(R20.99),以化學(xué)吸附為主,吸附速率由表面擴(kuò)散與顆粒內(nèi)擴(kuò)散聯(lián)合控制。
[Abstract]:Using ferrous sulfate as Tie Yuan, nano-iron modified oyster shell material was prepared by in-situ reduction-loading of potassium borohydride. The microstructure of modified oyster shell material was characterized, and the adsorption properties of modified oyster shell material for PCBsof persistent organic substance PCBswere investigated.The experimental results show that the modified oyster shell material has uniform particle size and high dispersion, and the modified oyster shell material has good treatment ability of PCBs wastewater.When the treatment time is 180 min, the solution temperature and initial PCBs concentration are 25 鈩，

本文編號：1734109