【摘 要】
：
Low-cost activated carbon was prepared from Polygonum orientale Linn.(PL)by phosphoric acid activation.Its ability to adsorb Pb(Ⅱ)ions from aqueous solutio
【机 构】
：
SchoolofEnvironmentalScienceandEngineering,ShandongUniversity,Jinan250100,China
论文部分内容阅读
Low-cost activated carbon was prepared from Polygonum orientale Linn.(PL)by phosphoric acid activation.Its ability to adsorb Pb(Ⅱ)ions from aqueous solutions was examined.Through SEM,XRD,BET,and FT1R analyses,the PL-activated carbon(PLAC)was found to have a porous structure with a surface area of about 1400 m2/g.Carboxyl groups played an important role in the adsorption of Pb(Ⅱ)through blocking studies.The sorption system followed a pseudo second-order kinetic model,and the equilibrium time was obtained after 30 min.The adsorption isotherms were simulated well by the Langmuir model.The adsorption of Pb(Ⅱ)on PLAC was strongly dependent on pH and ionic strength,indicating an ionexchange mechanism.Regeneration studies showed that PLAC could be used several times by desorption with an HCl reagent.
其他文献
烟草青枯病是为害烟叶生产的主要病害之一,为了更好地利用烟草青枯病拮抗茵防治烟草青枯病的研究,本文采用微生物保守区域扩增、构建文库、生物信息比对的方法初步分析烟草青
本项研究于2010年9月和2011年6～9月,在全国9个省和1个直辖市采集烟草根围土壤样本68份,分离计算胞囊检出率,同时,以山东省潍坊诸城市辛兴烟草农场作为固定调查点,系统研究胞囊
线虫是烟草根围土壤中一类重要的生物,许多植物线虫可侵染烟草,为烟草重要的病原物,因此,明确我国烟草根围土壤中的线虫种类,具有理论和现实意义.本文于2010-2011年对中国部
2011年在湖北马里兰烟产区,采集了57份烟草病毒病样本.对病毒病外观症状进行统计,划分为花叶、畸形、脉坏死、疱斑等7种症状类型;室内采用DAS-ELISA方法进行病毒种类的鉴定,
为了明确引起河南省烟草低头黑病的病原菌,试验采用组织分离与单孢分离法相结合获得单孢菌株,通过培养性状的观察,形态学和分子生物学鉴定.病原茵在PDA培养基上茵落正面初期
针对南水北调东线工程南四湖流域入湖河流和湖泊水体污染严重、湖滨湿地功能退化等问题,设计了新薛河入湖口人工湿地水质净化工程,采用生态滞留塘+多级表面流人工湿地工艺.运
River water pollution is increasingly widespread in northern China and can lead to problems with the drinking water for the residents if not properly treate
Constructed wetlands were widely used for the treatment of effluents rich in ammonia,but wetland plants might be affected under high ammonia concentration.E
将芦竹、芦苇、香蒲3种湿地常见水生植物分别在250、300、400、500、600℃下进行热裂解,研究热解所得生物油对中肋骨条藻的抑制作用结果表明,3种水生植物在不同温度下所得的1
There has been much debate on the topic of whether stricter environmental regulations can promote environmental performance and economic performance at the