The Open Chemical Engineering Journal最新文献_第8页

Soil Heavy Metal Pollution Around Iron Tailing Areas at Different UsingStatus 不同利用状态下铁尾矿区周边土壤重金属污染

The Open Chemical Engineering Journal Pub Date : 2015-10-09 DOI: 10.2174/1874123101509010113

Song Fengmin, Xingchang Zhang, Wang Yanmin, Chen Li

{"title":"Soil Heavy Metal Pollution Around Iron Tailing Areas at Different UsingStatus","authors":"Song Fengmin, Xingchang Zhang, Wang Yanmin, Chen Li","doi":"10.2174/1874123101509010113","DOIUrl":"https://doi.org/10.2174/1874123101509010113","url":null,"abstract":"Heavy metal pollution was a dynamic changing process for a long period and on large spatial scale. The heavy metal content in tailing soil varied with time changing. The distribution and cumulative characteristics of heavy metals in different time and surrounding soil caused by ore dressing and smelting activities were different. The aim of this study was to assess the geochemical characteristics and pollution status of heavy metals in soil around 2 iron tailing areas at different using status. Samples were collected around the 2 different iron tailing and sieved through nylon sieves. Metals were measured in digested solutions by a atomic emission spectrometer. The concentration of all heavy metals (Fe, Mn, V, Cu, Ni) in the soil around using M tailing area exceeded local soil background value; however, the content of all metals except Fe in soil around closed W tailing areas were lower than background value. BCR results showed that average exchangeable fraction of Mn in soil around W and M accounted for 11.87%, 11.78% of the total concentration, respectively; average exchangeable and reducible fractions of Ni accounted for 26.97% and 13.59%, respectively; average oxidizable fraction of Cu accounted for 18.6%, 31.63% in soil around W and M, respectively, which were higher than other metals; residual fraction of Fe, V accounted for more than 80% of the total concentration. The results indicate the soil was moderately contaminated by heavy metal around M and unpolluted around W. However, the risk assessment results performed that Mn showed moderate potential ecological risk and other metals showed low potential risk.","PeriodicalId":22933,"journal":{"name":"The Open Chemical Engineering Journal","volume":"224 1","pages":"113-120"},"PeriodicalIF":0.0,"publicationDate":"2015-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80055347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

New Water Treatment Chemical PFZSS Preparation and Application 新型水处理化学品PFZSS的制备与应用

The Open Chemical Engineering Journal Pub Date : 2015-10-09 DOI: 10.2174/1874123101509010121

Qilin Liu

{"title":"New Water Treatment Chemical PFZSS Preparation and Application","authors":"Qilin Liu","doi":"10.2174/1874123101509010121","DOIUrl":"https://doi.org/10.2174/1874123101509010121","url":null,"abstract":"Nowadays global water quality pollution has become extremely serious, and solving water pollution has been extremely urgent, so researches on water pollution solutions have become even urgent. And flocculating method is the most traditional water purification method, research and create new high performance flocculating agent is one of floccu- lating method inherent problems. The paper mainly describes adding iron, zinc two kinds of metal captions together in polysyllabic acid, well controlling all aspects requirements in technology, researching and creating new water purification substance—poly iron and zinc silicate sulfate flocculants (PFZSS). PFZSS making method is weighting proper amount sodium silicate into container, and meanwhile putting it into water to dissolve, then utilizing dilute euphoric acid and so- dium hydroxide to adjust silicic acid solution pH value and arrive at regulated scope, letting it to activate and arrive at cer- tain time, slowly importing activated proper silica acid solution into moderate iron sulfate and zinc sulfate on the condi- tion of fully blending, and finally putting and curing for a while. And implement experiment research on how mixed solu- tion metal cations matching; making method, pH value, and silicon dioxide concentration these factors affect PFZSS overall performance. PFZSS application mainly takes catering industry sewage solution as an example to get PFZSS has very strong absorption capacity, owns good cleaning effects on extremely turbid catering industry treatment sewage COD and turbidity acquiring, its reaction formed flock density is great, sedimentation rate is very fast, so PFZSS will have great application prospects in the aspect of treating urban sewage.","PeriodicalId":22933,"journal":{"name":"The Open Chemical Engineering Journal","volume":"93 1","pages":"121-124"},"PeriodicalIF":0.0,"publicationDate":"2015-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73409290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on Particles Wetted by the Calcium-Based Slurries and the SlurriesViscosity with the Wetting Agents 钙基浆料润湿颗粒及润湿剂对浆料粘度的影响研究

The Open Chemical Engineering Journal Pub Date : 2015-09-30 DOI: 10.2174/1874123101509010103

Xiaowen Hao, Zhijun Zhang, Ran Liu

{"title":"Study on Particles Wetted by the Calcium-Based Slurries and the SlurriesViscosity with the Wetting Agents","authors":"Xiaowen Hao, Zhijun Zhang, Ran Liu","doi":"10.2174/1874123101509010103","DOIUrl":"https://doi.org/10.2174/1874123101509010103","url":null,"abstract":"Chemical agglomeration can reduce the particulates (including PM2.5) concentration emitted from fly ash par- ticulates and the wet flue gas desulfurization (WFGD) system. However, the calcium-based slurries affect the regulation of agglomeration compare to water, in particular, the wettability of the particulates and the viscosity of the calcium-based slurry. The wettability and the viscosity are of the important factors affecting agglomeration, conversely. This manuscript studied the two factors in the calcium-based slurries. The sessile drop method was used to measure the contact angle. Four kinds of calcium-based slurries (CaCO3, CaSO3, CaSO4, Ca(OH)2) respectively mixed with five kinds of wetting agents wet particles, and the wetting regulation was studied. The viscometer was used to measure the viscosity of the calcium- based slurry with the wetting agents, and the variation of the viscosity was analysed as well. The results showed that the smaller the particle size was, the more difficult to be wet, and the wetting agents could enhance the wettability greatly, but the effect was related to the properties of the calcium-based material and the wetting agents. There were variable viscosi- ties for different calcium-based slurries after adding the wetting agents. Overall, the Compound No. 3 had the optimal qualities in improving particle wettability and maintaining the calcium-based slurry with a high viscosity. Thereby the Compound No. 3 is optimal in facilitating chemical agglomeration.","PeriodicalId":22933,"journal":{"name":"The Open Chemical Engineering Journal","volume":"20 1","pages":"103-108"},"PeriodicalIF":0.0,"publicationDate":"2015-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85586387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Variations Regularity of Soil Nitrate Nitrogen in Hebei Piedmont Plain 河北山前平原土壤硝态氮变化规律

The Open Chemical Engineering Journal Pub Date : 2015-09-10 DOI: 10.2174/1874123101509010098

Huiyan Gao, Lu-Hua Yang

引用次数: 1

Establishment of Mathematical Model and Sensitivity Analysis of PluggingCapacity of Multi-Component Foam Flooding 多组分泡沫驱堵塞能力数学模型的建立及敏感性分析

The Open Chemical Engineering Journal Pub Date : 2015-08-31 DOI: 10.2174/1874123101509010084

Chengli Zhang, Dezhi Liang, Hai-qing Cui, D. Yin, Guoliang Song

{"title":"Establishment of Mathematical Model and Sensitivity Analysis of PluggingCapacity of Multi-Component Foam Flooding","authors":"Chengli Zhang, Dezhi Liang, Hai-qing Cui, D. Yin, Guoliang Song","doi":"10.2174/1874123101509010084","DOIUrl":"https://doi.org/10.2174/1874123101509010084","url":null,"abstract":"Based on mass conservation, foam total amount balance thought and foam properties characterization model, a foam flooding mathematical model with three-phase and five components is established and numerically solved, the ex- plicit is used to solve the saturation equation and the implicit is used to solve the pressure equation in this model. By fit- ting the results of foam plugging capacity experiments and numerical calculation, the correctness of the model is verified. On this basis, the conceptual model is established to simulate and evaluate the sensitivity of influencing parameters of foam flooding plugging ability. The results show that: the plugging ability of foam system increases with the increase of foaming agent concentration. When the concentration of foaming agent is more than 0.3%, the resistance coefficient tends to steady; when gas-liquid ratio is 2:1, the foam plugging ability is the strongest. The plugging ability of foam system in- creases with the increase of permeability showing good permeability selectivity. If the permeability in the reservoir is higher then the profile control capability will also be stronger.","PeriodicalId":22933,"journal":{"name":"The Open Chemical Engineering Journal","volume":"38 1","pages":"84-89"},"PeriodicalIF":0.0,"publicationDate":"2015-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80153989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Study of Water-rock Interaction with Hydrochemical and Isotopic Datum in Laizhou Bay 莱州湾水岩相互作用与水化学和同位素基准面研究

The Open Chemical Engineering Journal Pub Date : 2015-08-31 DOI: 10.2174/1874123101509010090

Liu Feng, Ma Fengshan, Guo Jie, Ding-Yuan Kuo

引用次数: 3

Antioxidant Activities and the In Vitro Effects on K562 Cell Viability ofFlavonoids Obtained from Onion Skin by Different Extraction Methods 不同提取方法洋葱皮中黄酮类化合物的抗氧化活性及对K562细胞活力的影响

The Open Chemical Engineering Journal Pub Date : 2015-08-25 DOI: 10.2174/1874123101509010071

S. Guoqing, Xiang Qisen, Zhao Wenen, Fang Yichao, Ma Tiantian, L. Ke, Li Yanqi

{"title":"Antioxidant Activities and the In Vitro Effects on K562 Cell Viability ofFlavonoids Obtained from Onion Skin by Different Extraction Methods","authors":"S. Guoqing, Xiang Qisen, Zhao Wenen, Fang Yichao, Ma Tiantian, L. Ke, Li Yanqi","doi":"10.2174/1874123101509010071","DOIUrl":"https://doi.org/10.2174/1874123101509010071","url":null,"abstract":"In order to effectively extract specific flavonoids with high biological activity from onionskin, NaNO 2 - Al(NO 3 ) 3 -NaOH coloration method, spectrophotometry and MTT method were adopted to study the yield rate and content of flavonoids obtained from alcohol water and alkali water extraction processes, and the antioxidant activities and the in vitro effects on K562 cell viability. The results indicate that yield rates of flavonoids obtained by alcohol water and alkali water extraction methods was 3.76% and 2.37% respectively, solid flavonoids contents were 42.20% and 76.21%; under the same concentration of total flavonoids, alkali water extract has weaker effect in removing superoxide anions and DPPHradicals, they have similar effect in removing nitrite and hydroxyl free radicals; in the test concentration range (40 ~ 200 µg / mL), they have similar effect in inhibiting the proliferation activity of K562 cells, the maximum inhibition rate of flavonoids obtained by alkali water extraction method is 77.71%, while maximum inhibition rate of flavonoid obtained by alcohol water extraction method is 70.64%. Both the flavonoids obtained from onionskins by alcohol water extraction method and alkali water extraction method have good biological activity. The alkali water extraction method is simple without any alcohol consumption, and the product purity is high, although the yield rate and certain biological activity of flavonoids obtained by alkali water extraction method are lower than those obtained by alcohol water extraction method, it still has certain significance in industrial production.","PeriodicalId":22933,"journal":{"name":"The Open Chemical Engineering Journal","volume":"47 1","pages":"71-77"},"PeriodicalIF":0.0,"publicationDate":"2015-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77144980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of Lignosulphonate Mannich Bases as Corrosion Inhibitors 木质素磺酸曼尼希碱缓蚀剂的研究

The Open Chemical Engineering Journal Pub Date : 2015-08-25 DOI: 10.2174/1874123101509010078

Hua-rui Hao, Yanqing Miao

引用次数: 0

A New Acetophenone Trimer From Roots of Euphorbia ebracteolata 大戟根中一个新的苯乙酮三聚体

The Open Chemical Engineering Journal Pub Date : 2015-07-31 DOI: 10.2174/1874123101509010067

Geng Di, Xuan Ma, L. Weng, Yi Litao, Y. Han, Xin Yang

引用次数: 1

Using Fenton Oxidation Method to Advanced Treatment of Landfill Leachate Fenton氧化法深度处理垃圾渗滤液

The Open Chemical Engineering Journal Pub Date : 2015-07-31 DOI: 10.2174/1874123101509010058

Gao Yanjiao, Huang Runzhu, Song Tiehong

引用次数: 1