Advances in Environmental Research最新文献_第9页

Adsorption/desorption of uranium on iron-bearing soil mineral surface 含铁土壤矿物表面对铀的吸附/解吸

Advances in Environmental Research Pub Date : 2015-06-25 DOI: 10.12989/AER.2015.4.2.135

S. Ha, D. Kyung, Woojin Lee

引用次数: 5

Functionalized magnetite / silica nanocomposite for oily wastewater treatment 功能化磁铁矿/二氧化硅纳米复合材料处理含油废水

Advances in Environmental Research Pub Date : 2015-06-12 DOI: 10.12989/AER.2015.4.2.069

S. G. Hakimabadi, A. Ahmadpour, M. H. Mosavian, T. R. Bastami

{"title":"Functionalized magnetite / silica nanocomposite for oily wastewater treatment","authors":"S. G. Hakimabadi, A. Ahmadpour, M. H. Mosavian, T. R. Bastami","doi":"10.12989/AER.2015.4.2.069","DOIUrl":"https://doi.org/10.12989/AER.2015.4.2.069","url":null,"abstract":"A new magnetite-silica core/shell nanocomposite (Fe3O4@nSiO2@mSiO2) was synthesized and functionalized with trimethylchlorosilane (TMCS). The prepared nanocomposite was used for the removal of diesel oil from aqueous media. The characterization of magnetite-silica nanocomposite was studied by X-ray diffraction (XRD), Fourier transform infrared (FTIR), transmission electron microscopy (TEM), surface area measurement, and vibrating sample magnetization (VSM). Results have shown that the desired structure was obtained and surface modification was successfully carried out. FTIR analysis has confirmed the presence of TMCS on the surface of magnetite silica nanocomposites. The lowangle XRD pattern of nanocomposites indicated the mesoscopic structure of silica shell. Furthermore, TEM results have shown the core/shell structure with porous silica shell. Adsorption kinetic studies indicated that the nanocomposite was able to remove 80% of the oil contaminant during 2 h and fit well with the pseudo-second order model. Equilibrium studies at room temperature showed that the experimental data fitted well with Freundlich isotherm. The magnetic property of nanocomposite facilitated the separation of solid phase from aqueous solution.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"21 1","pages":"69-81"},"PeriodicalIF":0.0,"publicationDate":"2015-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89075198","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: 3

Numerical study of CO 2 hydrate dissolution rates in the ocean: Effect of pressure, temperature, and salinity 海洋中二氧化碳水合物溶解速率的数值研究:压力、温度和盐度的影响

Advances in Environmental Research Pub Date : 2015-03-25 DOI: 10.12989/AER.2015.4.1.017

D. Kyung, Sukwon Ji, Woojin Lee

引用次数: 2

Allelopathic effects of red pepper ( Capsicum annuum L.) and coriander ( Coriandrum sativum L.) on early seedling growth of wheat ( Triticum aestivum L.)

Advances in Environmental Research Pub Date : 2015-03-01 DOI: 10.12989/AER.2015.4.1.001

M. Iqbal, Lubna Ahmed, M. Shafiq, M. Athar

{"title":"Allelopathic effects of red pepper ( Capsicum annuum L.) and coriander ( Coriandrum sativum L.) on early seedling growth of wheat ( Triticum aestivum L.)","authors":"M. Iqbal, Lubna Ahmed, M. Shafiq, M. Athar","doi":"10.12989/AER.2015.4.1.001","DOIUrl":"https://doi.org/10.12989/AER.2015.4.1.001","url":null,"abstract":"A pot experiment was conducted to assess the effects of red pepper (Capsicum annuum) and coriander (Coriandrum sativum) on seedling growth of wheat (Triticum aestivum). The aqueous extracts treatment of red pepper and coriander showed a significant (p < 0.05) reduction in root, shoot and seedling length, number of leaves and seedling dry weight of wheat (T. aestivum) as compared to control. The inhibitory different effect on growth of wheat (T. aestivum) was directly proportional to the increasing concentration (1, 2, 3, 4 and 5%) of aqueous extracts of red pepper and coriander as compared to control treatment (0%). The root, shoot, seedling length and number of leaves of T. aestivum significantly p < 0.05 decreased at 5% concentration of red pepper as compared to control. The root, shoot and seedling growth of T. aestivum was also significantly reduced at 1, 2, 3, 4 and 5% concentration of coriander as compared to control. The root, shoot and leaves dry weight of T. aestivum at 5% coriander extract treatment concentration decreased as compared to control. The tolerance in seedlings of T. aestivum to red pepper and coriander extract treatment was dose dependent as compared to control. The seedlings of T. aestivum showed low percentage of tolerance to pepper extract treatment than coriander extract treatment.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"18 1","pages":"1-15"},"PeriodicalIF":0.0,"publicationDate":"2015-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85090203","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: 4

Photocatalytic degradation of textile dye CI Basic Yellow 28 wastewater by Degussa P25 based TiO 2 德固赛P25 tio2光催化降解纺织染料CI碱性黄28废水

Advances in Environmental Research Pub Date : 2015-03-01 DOI: 10.12989/AER.2015.4.1.025

Gülhan Köneçoğlu, Toygun Safak, Y. Kalpaklı, M. Akgün

引用次数: 14

Bisphenol A and the related alkylphenol contaminants in crustaceans and their potential bioeffects 甲壳类动物体内双酚A及相关的烷基酚污染物及其潜在生物效应

Advances in Environmental Research Pub Date : 2015-03-01 DOI: 10.12989/AER.2015.4.1.039

Y. Zuo, Zhuo Zhu, Mohammed Alshanqiti, Joseph P. Michael, Yiwei Deng

{"title":"Bisphenol A and the related alkylphenol contaminants in crustaceans and their potential bioeffects","authors":"Y. Zuo, Zhuo Zhu, Mohammed Alshanqiti, Joseph P. Michael, Yiwei Deng","doi":"10.12989/AER.2015.4.1.039","DOIUrl":"https://doi.org/10.12989/AER.2015.4.1.039","url":null,"abstract":"Bisphenol A is widely used in plastic and other industrial consumer products. Release of bisphenol A and its analogues into the aquatic environment during manufacture, use and disposal has been a great scientific and public concern due to their toxicity and endocrine disrupting effects on aquatic wildlife and even human beings. More recent studies have shown that these alkylphenols may affect the molting processes and survival of crustacean species such as American lobster, crab and shrimp. In this study, we have developed gas chromatography with flame ionization detection (GC-FID) and gas chromatography- mass spectrometric (GC-MS) methods for the determination of bisphenol A and its analogues in shrimp Macrobrachium rosenbergii, blue crab Callinectes sapidus and American lobster Homarus americanus samples. Bisphenol A, 2,4-bis-(dimethylbenzyl)phenol and 4-cumylphenol were found in shrimp in the concentration ranges of 0.67-5.51, 0.36-1.61, and < LOD (the limit of detection)-1.96 ng/g (wet weight), and in crab of 0.10-0.44, 0.13-0.62, and 0.26-0.58 ng/g (wet weight), respectively. In lobster tissue samples, bisphenol A, 2-t-butyl-4-(dimethylbenzyl)phenol, 2,6-bis-(t-butyl)-4-(dimethylbenzyl)phenol, 2,4-bis- (dimethybenzyl)phenol, 2,4-bis-(dimethylbenzyl)-6-t-butylphenol and 4-cumylphenol were determined at the concentration ranges of 4.48-7.01, 1.23-2.63, 2.71-9.10, 0.35-0.91, 0.64-3.25, and 0.44-1.00 ng/g (wet weight), respectively. At these concentration levels, BPA and its analogs may interfere the reproduction and development of crustaceans, such as larval survival, molting, metamorphosis and shell hardening.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"32 1","pages":"39-48"},"PeriodicalIF":0.0,"publicationDate":"2015-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77749643","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: 8

Aqueous phase removal of ofloxacin using adsorbents from Moringa oleifera pod husks 用吸附剂水相法去除辣木豆荚壳中的氧氟沙星

Advances in Environmental Research Pub Date : 2015-03-01 DOI: 10.12989/AER.2015.4.1.049

R. Wuana, R. Sha’Ato, Shiana Iorhen

{"title":"Aqueous phase removal of ofloxacin using adsorbents from Moringa oleifera pod husks","authors":"R. Wuana, R. Sha’Ato, Shiana Iorhen","doi":"10.12989/AER.2015.4.1.049","DOIUrl":"https://doi.org/10.12989/AER.2015.4.1.049","url":null,"abstract":"Chemically activated and carbonized adsorbents were prepared from Moringa oleifera pod husks (MOP), characterized and evaluated for their ability to remove a common antibiotic - ofloxacin (OFX) from aqueous solution. The pulverized precursor was steeped in a saturated ammonium chloride solution for a day to give the chemically activated adsorbent (AMOP). A portion of AMOP was pyrolyzed in a muffle furnace at 623 K for 30 min to furnish its carbonized analogue (CMOP). The adsorbents showed favorable physicochemical attributes. The effects of operational parameters such as initial OFX solution pH and concentration, adsorbent dosage, temperature and contact time on OFX removal were investigated. At equilibrium, optimal removal efficiencies of 90.98% and 99.84% were achieved at solution pH 5 for AMOP and CMOP, respectively. The equilibrium adsorption data fitted into both the Langmuir and Freundlich isotherms. Gibbs free energy change (ΔGo), enthalpy change (ΔHo) and entropy change (ΔSo) indicated that the adsorption of OFX was feasible, spontaneous, exothermic and occurred via the physisorption mode. Adsorption kinetics obeyed the Blanchard pseudo-second-order model. The results may find applications in the adsorptive removal of micro-contaminants of pharmaceutical origin from wastewater.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"61 1","pages":"49-68"},"PeriodicalIF":0.0,"publicationDate":"2015-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84806134","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: 24

Effect of SO 2 - NO 2 fumigation on wooden tree seedlings in open top chamber system so2 - no2熏蒸对开顶室木树幼苗的影响

Advances in Environmental Research Pub Date : 2014-12-25 DOI: 10.12989/AER.2014.3.4.355

V. Katiyar

{"title":"Effect of SO 2 - NO 2 fumigation on wooden tree seedlings in open top chamber system","authors":"V. Katiyar","doi":"10.12989/AER.2014.3.4.355","DOIUrl":"https://doi.org/10.12989/AER.2014.3.4.355","url":null,"abstract":"The present study has been performed on one year old tree saplings of Azadirachta indica (L.), Cassia siamea (L.), Dalbergia sissoo (Roxb.), Eucalyptus rostrata (L.), Mangifera indica (L.) and Schyzygium cumini (L.) in order to assess the effect of exposure of SO2-NO2, alone and combination of two gases. Tree saplings have been exposed to an average of 495 g m SO2 and 105 g m NO2 for 40 d at the rate of 4 h d during 10:00 am to 01:00 pm in OTC. Total chlorophyll, specific leaf area (SLA), nitrate reductase (NR) activity, foliar protein, free proline content and free amino acids (AAs) of foliage have been the plant parameters, taken into consideration to evaluate the effect of gaseous exposure. Exposure of two gases has caused reduction in total chlorophyll content (P < 0.05, 0.01). Physiological and biochemical process has been seemed to be altered noticeable due to the combined effect of SO2 + NO2 followed by SO2 alone (P < 0.05, 0.01). NO2 mediated stress has produced, stimulatory and inhibitory responses in tree saplings. Results reveal that tree saplings have been attempted to absorb the NO2 through N assimilation pathway. E. rostrata, C. siamea have been emerged as moderate tolerant to SO2 mediated stress followed by A. indica. Response pattern of S. cumini, M. indica and D. sissoo set them as good indicators of SO2 NO2 exposure. Effects of two gases on tree saplings have been found to be synergistic.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"1 1","pages":"355-365"},"PeriodicalIF":0.0,"publicationDate":"2014-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90162257","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: 3

Production of concrete paving blocks using electroplating waste - Evaluation of concrete properties and solidification/stabilization of waste 用电镀废料生产混凝土铺路砖。混凝土性能和废料固化/稳定的评价

Advances in Environmental Research Pub Date : 2014-12-25 DOI: 10.12989/AER.2014.3.4.337

J. G. Sgorlon, C. Tavares, J. Franco

{"title":"Production of concrete paving blocks using electroplating waste - Evaluation of concrete properties and solidification/stabilization of waste","authors":"J. G. Sgorlon, C. Tavares, J. Franco","doi":"10.12989/AER.2014.3.4.337","DOIUrl":"https://doi.org/10.12989/AER.2014.3.4.337","url":null,"abstract":"The determination of the effectiveness of the immobilization of blasting dust (waste generated in galvanic activities) in cement matrix, as well of mechanical, physical and microstructural properties of concrete paving blocks produced with partial replacement of cement was the objective of this work. The results showed that blasting dust has high percentage of silica in the composition and very fine particle size, characteristics that qualify it for replacement of cement in manufacturing concrete blocks. The replacement of Portland cement by up to 5% residues did not cause a significant loss in compressive strength nor increase in water absorption of the blocks. Chemical tests indicated that there is no problem of leaching or solubilization of contaminants to the environment during the useful life of the concrete blocks, since the solidification/stabilization process led to the immobilization of waste in the cement mass. Therefore, the use of blasting dust in the manufacture of concrete paving blocks is promising, thus being not only an alternative for proper disposal of such waste as well as a possibility of saving raw materials used in the construction industry.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"61 1","pages":"337-353"},"PeriodicalIF":0.0,"publicationDate":"2014-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83139016","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

Accumulation of Cd, Co, Cr, Cu, Mn, Ni, Pb and Zn in urban soil and their mobility characteristics 城市土壤中Cd、Co、Cr、Cu、Mn、Ni、Pb和Zn的积累及其迁移特征

Advances in Environmental Research Pub Date : 2014-12-25 DOI: 10.12989/AER.2014.3.4.321

K. Bhattacharyya, Mayur J. Mahanta

{"title":"Accumulation of Cd, Co, Cr, Cu, Mn, Ni, Pb and Zn in urban soil and their mobility characteristics","authors":"K. Bhattacharyya, Mayur J. Mahanta","doi":"10.12989/AER.2014.3.4.321","DOIUrl":"https://doi.org/10.12989/AER.2014.3.4.321","url":null,"abstract":"Eight trace metals, Cd, Co, Cr, Cu, Mn, Ni, Pb and Zn, were measured in the urban soil of Guwahati City, Assam, India from 31 sites representing five different types of land use, residential, commercial, industrial, public utilities, and roadside. Cd and Co occurred in very low concentrations (Cd << Co) in all types of land use without any significant variation from one type of land use to another. Ni concentrations were more than those of Co, and the concentrations depended on land use pattern. Average Cr and Cu concentrations were ≥ 100 mg/kg, but Cr had a significantly higher presence in industrial land use. Pb concentrations showed similar trends. The two metals, Mn and Zn, were present in much larger amounts compared to the others with values ≥ 300 mg/kg. Industrial and roadside soil contained much more Mn while commercial soil was enriched with Zn. Toxicity Characteristic Leaching Procedure (TCLP) was used for elucidating the mobility characteristics of the eight heavy metals. Mn suffered the highest leaching from commercial land (9.9 mg/kg on average) and also from other types of land. Co, Cu and Pb showed higher leachability from commercial soils but the leached concentrations were less than those of Mn. The two metals, Zn and Ni, were leached from residential land in considerable amounts. The TCLP showed Mn to be the most leachable metal and Cr the least.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"28 1","pages":"321-335"},"PeriodicalIF":0.0,"publicationDate":"2014-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82254192","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: 3