抚仙湖流域磷矿开采区不同植被类型水土流失的对比研究

通过对抚仙湖流域磷矿开采区内不同植被类型在同一降雨下水土流失的对比研究，筛选出磷矿开采区内水土保持能力较好的植被类型，研究表明：在所选8种植被类型中，竹林植物群落的水土保持能力最强，旱冬瓜林植物群落次之。     

应用混合-澄清槽萃取炼油厂碱渣中和酸性水工艺研究

实验确定了采用有机胺萃处理碱渣中和酸性水时，达到传质平衡时的萃取、反萃混合槽单位体积能耗，以及无相夹带时萃取、反萃澄清槽停留时间。原水CODcr11993～28000mg／L，CODcr去除率85％～90％。     

大型磷酸－磷铵企业环境风险的防范

运用工程分析，物料衡算，综合判断等方法对大型磷酸－磷铵企业的重点污染风险因子进行筛选只别，根据磷石膏库暴雨满溢时氟化物对地表水环境的污染影响，含氟废气（事故）排放对大气环境及农作物的污染影响，氨贮罐泄漏及燃爆对大气环境及健康影响的风险评价结果，重点研究了磷酸－磷铵企业环境风险的防范措施。针对广西鹿化肥公司及国内同类厂的一般情况，提出了保证库周排洪导流沟渠通畅，建设备用磷石膏库等防止暴雨满溢污染地染地表水，改造磷酸尾气洗涤吸收系统防止含氟废气（事故）排放，加强氨系统的安全管理以杜绝氨泄漏等防范措施。     

二段净化渣综合利用

通过对二段净化渣浸出锌的试验研究，探索出了二段净化渣处理的最佳工艺技术控制条件，在生产实际中效果良好     

VAE废水和废渣的利用

介绍了 VAE废水和废渣在涂料、粘合剂、水泥改性以及保温材料加工中的应用情况。     

Prenatal diagnosis of zellweger's syndrome by chorionic villus sampling-and a caveat

At 7·5 weeks gestation, two small chorionic villous biopsies were obtained from a woman at risk for Zellweger's cerebro-hepato-renal syndrome, and were separately established in culture. After 3 weeks, dihydroxyacetone phosphate acyltransferase (DHAP-AT) activity was measured in both cultures. The enzyme was markedly deficient in one cell strain and this was subsequently shown to have a male karyotype. However, the second culture had normal enzyme activity and a female karyotype. The pregnancy was terminated at 11·5 weeks gestation, and follow-up studies on fetal tissues confirmed a male fetus with markedly deficient DHAP-AT activity.     

高温厌氧处理后炼厂浮选渣过滤性能的研究

本文考察了高温厌氧消化处理炼油厂浮选的过滤脱水效果，得出在污泥停留时间为１０天的条件下，厌氧过程能较好地进行；高温消化后的污泥过滤脱水性能有较大的改善；过滤后的滤饼含水率明显降低，由新鲜浮渣的９１％可降到５７％。     

浅谈烟气脱硫渣的利用

介绍了国内外脱硫渣综合利用的情况，分析了国内脱硫渣利用的形式。对脱硫今后的研究方向进行了展望。     

Chemical fixation of toxic metals in stainless steel pickling residue by Na2S∙xH2O, FeSO4∙6H2O and phosphoric acid for beneficial uses

The leaching concentrations of different metals in stainless steel pickling residue(SSPR)were determined and the toxic metals were treated using Na_2 S·xH_2 O,FeSO_4·6 H_2 O,and phosphoric acid.A modified European Community Bureau of Reference(BCR) sequential extraction was used to identify the speciation of the concerned metals.Results showed that SSPR contains a large amount of Ca(58.41%),Fe(29.44%),Cr(3.83%),Ni(2.94%),Mn(2.82%) and some of Al,Cu,Mg,Zn.Among them,Cr and Ni were the most toxic metals in SSPR,thus the raw SSPR falls into hazardous waste category due to the leaching amount of Cr.In addition,the leached Cr was identified as Cr6+(MgCr04) in the waste.BCR test revealed that risk assessment code(RAC) of Cr and Ni were 33.29% and 61.7%,indicating they posed "high" and "very high" risk to the environment,respectively.After fixing by Na_2 S·xH_2 O and FeSO_4·6 H_2 O,the leaching concentrations of Cr and Ni were less than 1.5 and 0.5 mg/L,respectively.After fixing by Na_2 S·xH_2 O and FeSO_4·6 H_2 O the tre ated SSPR can be safely reused as roadbed materials,concrete and cement aggregates.This study provides a useful implication in treatment and beneficial reuse of heavy metal-containing hazardous wastes.     

The dynamic development of bacterial community following long-term weathering of bauxite residue

Bauxite residue is the industrial waste generated from alumina production and commonly deposited in impoundments. These sites are bare of vegetation due to the extreme high salinity and alkalinity, as well as lack of nutrients. However, long term weathering processes could improve residue properties to support the plant establishment. Here we investigate the development of bacterial communities and the geochemical drivers in bauxite residue, using Illumina high-throughput sequencing technology. Long term weathering reduced the pH in bauxite residue and increased its nutrients content. The bacterial community also significantly developed during long term weathering processes. Taxonomic analysis revealed that natural weathering processes encouraged the populations of Proteobacteria, Chloroflexi, Acidobacteria and Planctomycetes, whereas reducing the populations of Firmicutes and Actinobacteria. Redundancy analysis (RDA) indicated that total organic carbon (TOC) was the dominant factors affecting microbial structure. The results have demonstrated that natural weathering processes improved the soil development on the abandoned bauxite residue disposal areas, which also increased our understanding of the correlation between microbial variation and residue properties during natural weathering processes in Bauxite residue disposal areas.