Adsorptive removal of phosphate by the bimetallic hydroxide nanocomposites embedded in pomegranate peel

This study aimed to fabricate new and effective material for the efficiency of phosphate adsorption. Two types of adsorbent materials, the zirconium hydroxides embedded in pomegranate peel (Zr/Peel) and zirconium-lanthanum hydroxides embedded in pomegranate peel (Zr–La/Peel) were developed. Scanning electronic microscopy (SEM), x-ray photoelectron spectroscopy (XPS) and x-ray diffraction (XRD) were evaluated to give insight into the physicochemical properties of these adsorbents. Zr–La/Peel exceeded the adsorption efficiency of Zr/Peel adsorbents in batch adsorption experiments at the same pH level. The peel as a host can strive to have a strong “shielding effect” to increase the steadiness of the entrenched Zr and La elements. La and Zr are hydroxide metals that emit many hydrogen ions during the hydrolysis reaction, which contribute to protonation and electrostatic attraction. The highest adsorption capacity of La–Zr/Peel for phosphate was calculated to be 40.21 mg/g, and pseudo second-order equation is very well fitted for kinetic adsorption. Phosphate adsorption efficiency was reduced by an increase of pH. With the background of coexisting Cl^?, little effect on adsorption efficiency was observed, while adsorption capacities were reduced by almost 20–30% with the coexistence of ${{\text{SO}}_4}^{2?}$, ${{\text{NO}}_3}^{?}$ and humic acid (HA).     

曲霉对水中重金属的吸附去除

利用2种曲霉A.sojae M146和A.oryzae M149的菌体，作为吸附剂对水中Pb^2＋和Cd^2 进行去除实验。结果表明，曲霉菌体的最佳培养时间为72h，吸附的最佳pH为5．5、温度为30℃、时间为1h。在最佳实验条件下，A.sojae M146对Pb^2 和Cd^2 的吸附率，分别为69．76％和72．28％；A.oryzae M149对Pb^2 和Cd^2 的吸附率，分别为60．64％和81．34％。使用稀碱溶液对曲霉菌体进行浸泡预处理后，可提高对重金属的吸附去除效果；而使用稀释、乙醇水溶液以及蒸馏水对菌体浸泡后，明显降低了重金属的去除效果。Na2CO3和EDTA溶液，可以有效地将重金属从曲霉体上解吸下来，从而达到重复利用菌体作为吸附剂的目的。     

沸石用于去除废水中的氨氮

天然沸石及改性沸石对氨氮有很强的选择性吸附能力。介绍了沸石去除废水中氨氮的应用研究,包括在O/A生物处理系统、二级氧化塘处理系统、土地处理系统、湿地系统和堆肥系统等中的应用。分析了氨氮在沸石上发生吸附和离子交换的主要影响因素和规律。为开拓沸石在废水处理中的应用提供科学与技术基础。     

活性焦的改性及其脱硫性能的研究

以褐煤为主要原料制备的活性焦 ,经过改性后的一系列特性及脱硫效果 ,与纯活性焦进行了比较 ,是一种机械性能好、脱硫效率高、易再生的改性活性焦。为烟气脱硫提供一种新的吸附剂     

活性氧化铁/石英砂吸附剂去除水体中的重金属

介绍了活性氧化铁／石英砂吸附剂的特点和制备方法。该吸附能有效去除水体中的重金属，包括阳离子、阴离子、重金属颗粒物及一些络离子，且容易再生，被吸附的金属可以回收。     

不同体系中黄河沉积物对Cd2+吸附能力的比较

以黄河包头段的沉积物为吸附剂,分别以Cd~(2 )单离子溶液体系和Pb~(2 )、Cu~(2 )、Zn~(2 )、Cd~(2 ) 4种离子的混合溶液体系为吸附质,开展了在不同体系中Cd~(2 )的吸附、形态转化及释放等的比较实验。结果表明,不同体系中,Cd~(2 )的吸附等温线类型、吸附量、pH突跃区域的差别均较大,但不同体系中Cd~(2 )被沉积物吸附后的形态转化趋势基本相同;多离子体系中Cd~(2 )被吸附后的释放百分率比对应时间的单离子体系大,且释放曲线的峰型亦不同。     

烟气脱硫工艺的选择

论述了现今国内外烟气脱硫的现状及烟气脱硫工艺的分类，国内外较为先进的烟气脱硫工艺的机理及特点，且对不同的脱硫技术的优缺点进行了全面的比较，对需要进行脱硫的装置现状了科学地分析，并最终提出选择合理的脱硫工艺的方法及注意的问题。     

改进型活性炭吸附法去除污水生化处理过程中的恶臭

采用二级生化处理工艺的生活污水处理系统,在运转一段时间后会产生氨气、硫化氢等有刺激性的气体,对环境造成污染。在臭气的各种处理方法中,改进型活性炭吸附法对污水生化处理过程中产生的氨气和硫化氢气体的去除有特别显著、持久的效果,有望推广应用到更多的实际处理过程。阐述了改进型活性炭吸附法的工艺、材料特点和除湿装置作用。     

离聚物（MPET）对水中铬离子的吸附性能研究

研究了离聚物（MPET）粉末对Cr^3 的吸附性能，探讨了不同的吸附温度、时间、pH值和不同的初始浓度对吸附性能的影响，实验发现Cr^3 在较低温度下和pH为4时能被MPETO分末很好地吸附，最大饱和吸附量为11.80mg/g，实验表明MPET废纤维很可能发展成为一种经济的吸附重金属离子的材料。     

Pore structure and adsorption properties of activated carbon prepared from granular molded waste paper

We have previously manufactured activated carbon using waste paper board, which was prepared by adding 8% phenol resin adhesive to torn waste newspaper and hot-pressing. In this study, the pretreatment process of the raw material was simplified; the waste paper was extruded to form granules. The activated carbon was manufactured by the carbon dioxide activation method using the granules as the raw material. The properties of the activated carbon were evaluated based on the pore structure, the iodine adsorption number, and the adsorption of toluene vapor in a sealed chamber. The activated carbon, which was manufactured at an activation temperature of 1100°C and a treatment time of 60min, exhibited a specific surface area of 1241m²/g and an iodine adsorption number of 1120mg/g. These results were similar to those obtained for two commercially available activated carbons. The extent of toluene vapor adsorption by this activated carbon was similar to that observed for the two commercial activated carbons over a period of 130min.