泥炭对重金属废水中Cu^2＋、Pb^2＋最佳吸附条件的研究

泥炭中富含有机质与腐植酸,其中含有大量的极性基团,对金属离子有较强的吸附性能。本试验通过对泥炭吸附重金属废水中Cu^2＋、Pb^2＋种离子的吸附条件进行研究,得出最佳吸附条件为：当重金属离子浓度为30mg／L时,泥炭投加量分别为7g／L和5g／L,最佳吸附pH值分别为5和8,吸附时间均为30min．且离子浓度越高,表观吸附量越大,但除金属率越低。最佳条件下Cu^2＋、Pb^2＋的表观吸附量分别为4．24mg／g和6．00mg／g,除铜率和除铅率分别为98．8％和999％。     

泥炭水解-氧化产物的组成性质及其利用前景

本文评述了国内外和中国科学院山西煤炭化学研究所有关泥炭水解和氧化研究及开发工作的进展情况;对几种泥炭制剂的化学组成和性质进行了对比,指出我国低位中分解度泥炭制备生物活性制剂的可能性。     

滇池泥炭的工程特性

泥炭是第四系嗜湿性植物在洼地内堆积的结果，分布范围小，在我省也为一种特殊土。笔者根据在昆明地区所搜集的大量资料，对滇池周围的泥炭，从物理力学性质方面进行了总结，并对不同地质时期形成的泥炭，进行了分析比较。     

Peat Pyrolysis and the Analytical Semi-empirical Model

Abstract

Pyrolysis of peat could convert this material into useful fuels and valuable hydrocarbons. A study of peat pyrolysis can also serve as a useful bridge between studies of coal pyrolysis and biomass pyrolysis. Using an analytical model of pyrolysis that has previously been applied to biomass and to coal, we present here the results of applications of this model to a representative peat. The analysis suggests means of organizing and processing rate and yield data that should be useful in applications of pyrolysis for the production of fuels and chemicals.     

新型有机-无机BB肥料的生产工艺技术及发展前景

在倡导清洁化农业发展的今天，迫切要求改进和提高肥料品质，确保可持续生态农业发展、食品安全和人类健康。新型有机-无机BB肥料是实现测土施肥、提高肥料利用率、增产增收的重要途径。其中泥炭有机质颗粒是这种肥料生产中的关键技术，经多年的研发，现采用湿法挤压-整型-干燥-筛分新工艺技术，成功地实现有机-无机BB肥料的规模化生产。     

水泥搅拌止水帷幕桩不成桩原因及成功解决途径

该文结合实例,介绍了水泥搅拌止水帷幕桩用普通水泥﹑湿法工艺在泥碳土地质条件下不成桩的原因以及成功解决的案例。案例表明,在不同的地质条件下,必须先搞清楚土质成份,然后再选择工艺和水泥品种,方可解决水泥搅拌止水帷幕桩的成桩问题。     

烟梗草炭在烟草漂浮育苗基质中的应用

为探索废弃烟梗作为烟草漂浮育苗基质原料的可行性,用自制的烟梗草炭(TSP)为烟草栽培基质,进行了烟草漂浮育苗试验.结果表明:TSP 1号(烟梗草炭50％+天然草炭50％)、TSP 2号(烟梗草炭50％+椰糠50％)、TSP 3号(烟梗草炭50％+天然草炭25％+椰糠25％)均可替代天然草炭用于烟草漂浮育苗基质中,其中TSP 3号替代的效果较好,烟苗综合长势优于天然草炭配方基质;烟梗草炭l号和2号替代天然草炭育苗,其烟苗长势均与天然草炭配方基质相当.因此,利用废弃烟梗替代天然草炭作为烟草漂浮育苗基质的方法可行.     

改良剂对重金属复合污染土壤的钝化修复研究

研究了泥炭、凹凸棒土及不同施用方式对土壤重金属有效态的影响。结果表明:各处理对土壤溶液的pH值影响不大;泥炭的钝化效果明显比凹凸棒土好,但在和凹凸棒土配合施用后,其钝化效果有所下降,而表施处理对DTPA提取态重金属的钝化效果并不明显。     

Sorption of copper by a highly mineralized peat in batch and packed‐bed systems

BACKGROUND: The performance of peat for copper sorption was investigated in batch and fixed‐bed experiments. The effect of pH was evaluated in batch experiments and the experimental data were fitted to an equilibrium model including pH dependence. Hydrodynamic axial dispersion was estimated by tracing experiments using LiCl as a tracer. Six fixed‐bed experiments were carried out at copper concentrations between 1 and 60 mg dm^?3 and the adsorption isotherm in dynamic mode was obtained. A mass transport model including convection–dispersion and sorption processes was applied for breakthrough curve modelling. RESULTS: Maximum uptake capacities in batch mode were 22.0, 36.4, and 43.7 mg g^?1 for pH values of 4.0, 5.0, and 6.0, respectively. Uptake capacities in continuous flow systems varied from 36.5 to 43.4 mg g^?1 for copper concentrations between 1 and 60 mg dm^?3. Dynamic and batch isotherms showed different shapes but a similar maximum uptake capacity. Sorbent regeneration was successfully performed with HCl. A potential relationship between dispersion coefficient and velocity was obtained with dispersion coefficients between 5.00 × 10^?8 and 2.95 × 10^?6 m² s^?1 for water velocities ranging between 0.56 × 10^?4 and 5.03 × 10^?4 m s^?1. The mass transport model predicted both the breakpoints and the shape of the breakthrough curves. CONCLUSIONS: High retention capacities indicate that peat can be used as an effective sorbent for the treatment of wastewater containing copper ions. Copyright © 2009 Society of Chemical Industry     

泥炭腐植酸类物质在洁净煤技术中的应用

介绍了泥炭腐植酸类物质用作水煤浆添加剂和型煤粘结剂的理论基础和实际应用效果。结果表明,将泥炭中含有的大量腐植酸类物质经过改性,用作水煤浆添加剂,在新汶煤、八一煤、邢台煤、兖州煤、鹤岗煤、抚顺煤、神华煤、双鸭山煤等煤种上使用,制浆浓度在65%～69%,粘度在1000mPa·s左右;用作型煤粘结剂,添加量在7%～10%,单个球的冷强度为55～88kg,热强度为50～70kg,常温下耐水性好,对灰分无增加,对环境无污染。