Volume 1, Issue 3最新文献_第5页

Remote monitoring and real-time abatement of odor emitted from sewer using odor sensors, wireless communication technique and microbial deodorant 利用气味传感器、无线通信技术和微生物除臭剂对下水道异味进行远程监测和实时治理

Volume 1, Issue 3 Pub Date : 2018-11-02 DOI: 10.30955/gnj.002740

{"title":"Remote monitoring and real-time abatement of odor emitted from sewer using odor sensors, wireless communication technique and microbial deodorant","authors":"","doi":"10.30955/gnj.002740","DOIUrl":"https://doi.org/10.30955/gnj.002740","url":null,"abstract":"In this study, a new technology was introduced to monitor the odor occurrence situation at the remote site in real time and the technology to reduce sewage odor by using microbial deodorant. Long-term monitoring and full-scale test was carried out to investigate the odor concentration in the combined sewer using the real - time odor monitoring device which consist of 3 odor sensors with the wireless communication technique, and to investigate the effect of the microbial deodorant on the reduction of sewer odor. The odor monitoring device, which was fabricated using metal oxide semiconductor sensors and code division multi access communication technique, was installed at three sites of the gravity-flow type combined sewer (depth 3m and width 5m) in Gangnam, Seoul. Odor monitoring in field was carried out at the interval of 10 minutes for 304 days over the autumn, winter and summer. The measured results were transmitted to Woosong odor research center about 100km away from the site. The measured sensor value was converted to olfactory odor concentration by the co-relation equation of the sensor value and the olfactory odor concentration. As the monitoring results, more than 40,000 sewage odor data were obtained. The average odor concentration of raw sewage in combined sewer was 464 OUk, which was 321 OUk in winter and 412 OUk in autumn and 659 OUk in summer. The commercial microbial deodorant used in this study was the mixture culture of 48 microbial strains, and the microbial deodorant of 1 m3 d-1 to 2 m3 d-1 was mixed with raw sewage at the 1.5 km upstream of the site where odor complaints occurred. As the experimental results, the average odor concentration of sewage mixed with microbial deodorant was 113 OUk, which was 102 OUk in winter and 298 OUk in autumn and 153 OUk in summer. It was estimated that the odor reduction effect of sewer odor by microbial deodorant is about 74%. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75060539","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

Impact of bioaugmentation of soil with n-hexadecane-degrading bacteria and phosphorus source on the rate of biodegradation in a soil-slurry system 正十六烷降解菌和磷源对土壤-泥浆系统生物降解速率的影响

Volume 1, Issue 3 Pub Date : 2018-10-31 DOI: 10.30955/gnj.002607

M. Dehghani

{"title":"Impact of bioaugmentation of soil with n-hexadecane-degrading bacteria and phosphorus source on the rate of biodegradation in a soil-slurry system","authors":"M. Dehghani","doi":"10.30955/gnj.002607","DOIUrl":"https://doi.org/10.30955/gnj.002607","url":null,"abstract":"In recent years, n-hexadecane, a component of diesel petroleum hydrocarbons, is frequently detected as the contaminant in many soils and water resources. The main aims of this study were focused on the feasibility of using the biodegradation for the removal of n-hexadecane from the soil-slurry system, by assessing the effects of phosphorus sources on biodegradation rate and determining the optimal conditions of the process. This study was carried out using an experimental method at the laboratory scale. The Taguchi method was used to optimize variables and their levels using the Qualitek-4 (w32b) software. We investigated the effects of initial concentration of n-hexadecane as the sole source of carbon (1-80 g/kg of soil), the role of phosphorus sources, at the concentration ranges from 10 to 600 g per Kg of soil, released by different bacterial species (Acinetobacter radioresistens, Pseudomonas aeruginosa, Bacillus subtilis, and the bacterial consortium) at the incubation time between 0 and 30 days. The optimum values of the response variables were predicted through signal-to-noise ratio (S/N). Results indicated that Bacillus subtilis were more effective in n-hexadecane degradation compared to the others (42%). Optimization process by Taguchi method suggested that the optimal conditions for the removal of n-hexadecane in a soil-slurry system are as follows: the initial n-hexadecane concentration as sole source of carbon in soil, Na2HPO4.12H2O as phosphorus source at the concentration of 300 mg per kg of soil and, finally, level of significance for the study parameters were 74.31, 6.48 and 8.51, respectively. In conclusion, bioaugmentation of soil with n-hexadecane-degrading bacteria providing an adequate supply of phosphorus source may enhance the biodegradation rate in a polluted soil. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75462872","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: 7

CO2 Sequestration by Mineral Carbonation: A Review 矿物碳酸化封存CO2的研究进展

Volume 1, Issue 3 Pub Date : 2018-10-25 DOI: 10.30955/gnj.002597

Saran R.K

{"title":"CO2 Sequestration by Mineral Carbonation: A Review","authors":"Saran R.K","doi":"10.30955/gnj.002597","DOIUrl":"https://doi.org/10.30955/gnj.002597","url":null,"abstract":"The mineral sequestration, one of the methods of CO2 sequestration, is considered advantageous, as it not only facilitates permanent and leakage free storage of CO2 but also obviates the need for regular monitoring. Mineral sequestration involves the dissolution of minerals and subsequently carbonation of dissolved minerals. In the direct mineral sequestration all the processes occur within a single reactor, whereas in the cases of indirect mineral sequestration, they take place in separate reactors. The main aim of the present study is to investigate the efficacy of these mineral sequestration methods and examine their suitability for industrial application and ensuring environmental friendliness. For this purpose, literature pertaining to these methods was extensively reviewed, and observations made by several researchers were collected, collated and compared based on the various parameters such as reaction pathways, reaction kinetics and cost of the process. The process cost was found to depend on the type of the process, process parameters, input materials and additives. It was noted that the direct mineral sequestration suffers from the sluggish reaction kinetics, thereby becomes economically unviable. The success of direct mineral sequestration process is yet to be achieved despite research carried out for several years. The problem of sluggish reaction kinetics was overcome by using multi-steps indirect carbonation routes, where separate reactors were used for dissolution and precipitation processes. The indirect sequestration method was noted to be most efficient as it offered several advantages such as improved reaction kinetics and recovery of the market value of by-product due to the better quality control of the product. Hence, based on interpretation of an extensive review of literature it can be concluded that the indirect mineral sequestration may be a viable option to carry out the CO2 sequestration and may be proved as a guiding light to ensure the clean environment for future generation. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81623255","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: 33

Removal of Methylene Blue from Aqueous Solutions Using Luffa Adsorbent Modified with Sodium Dodecyl Sulfate Anionic Surfactant 阴离子表面活性剂十二烷基硫酸钠改性丝瓜吸附剂去除水溶液中的亚甲基蓝

Volume 1, Issue 3 Pub Date : 2018-10-25 DOI: 10.30955/gnj.002722

{"title":"Removal of Methylene Blue from Aqueous Solutions Using Luffa Adsorbent Modified with Sodium Dodecyl Sulfate Anionic Surfactant","authors":"","doi":"10.30955/gnj.002722","DOIUrl":"https://doi.org/10.30955/gnj.002722","url":null,"abstract":"Methylene blue is one of the most widely used dyes in various industries such as textiles and dyeing which, due to toxicity, causes several environmental problems as well as difficulties in wastewater treatment process. Therefore, many studies have been carried out on the removal of the dye from industrial wastewater and aqueous solutions using various adsorbents. In the present study, a Luffa adsorbent surface was first modified by sodium dodecyl sulfate anionic surfactant and then methylene blue dye removal from aqueous solution was studied under various operating conditions in batch experiments. The parameters addressed included of the dye solution pH, adsorbent amount, initial methylene blue concentration in the dye medium, and the duration of adsorption. The use of anionic surfactant changed the adsorbent surface charge and thus increasing absorbent ion exchange capacity. The results showed that the highest removal efficiency occurs in mediums with an initial concentration of 50 mg L-1 and pH 6-9, where 99% of the dye was removed from the medium using 1 gr modified adsorbent in 60 minutes. Since the obtained pH range covered the neutral and near neutral media, the adsorbent can be used in a variety of industries. Finally, the dye adsorption process was modeled and examining the adsorption isotherms, it was observed that the empirical data appropriately followed the Freundlich model. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91123732","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: 11

Abatement of odour emissions by UV/Ozone oxidation process 紫外线/臭氧氧化法减少气味排放

Volume 1, Issue 3 Pub Date : 2018-10-25 DOI: 10.30955/gnj.002798

{"title":"Abatement of odour emissions by UV/Ozone oxidation process","authors":"","doi":"10.30955/gnj.002798","DOIUrl":"https://doi.org/10.30955/gnj.002798","url":null,"abstract":"The growing expectations of the population and the increasingly stringent regulations about air pollution have resulted in the need to minimize and conveniently treat the waste gas from different emission sources. The emissions from a large variety of plants, including waste and wastewater treatment plants, result mainly from the degradation of organic matter. These emissions are composed of a complex of substances emitted at low concentrations from diffusive sources. These characteristics make complex their treatment in economically efficient conditions. The design and management of environmental protection and industrial plants, therefore, require the implementation of focused processes for the control of the target compounds. The present study shows the applicability of an UV-Ozone lab-scale system for odours and VOCs removal. An artificial gaseous stream contaminated by toluene, at different incoming concentrations, was treated evaluating the abatement efficiencies in terms of odours and total VOCs as a function of power and contact time. The residue ozone concentrations was determined in order to optimize the set-up conditions. The results were discussed with the aim of evaluating the feasibility of the investigated solution for the advanced treatment of the waste gas from environmental facilities. Removal efficiencies up tp 91% were reached for the investigated conditions. Lower inlet concentrations resulted in high residue ozone outgoing the processes and, thus, it resulted over dimensioned for inlet load lower than 1,22 mg per minute. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81559774","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: 7

Investigation of adsorptive properties of Ag2CO3-polyaniline composite for environmental pollution control 环境污染治理用ag2co3 -聚苯胺复合材料吸附性能研究

Volume 1, Issue 3 Pub Date : 2018-10-15 DOI: 10.30955/gnj.002808

{"title":"Investigation of adsorptive properties of Ag2CO3-polyaniline composite for environmental pollution control","authors":"","doi":"10.30955/gnj.002808","DOIUrl":"https://doi.org/10.30955/gnj.002808","url":null,"abstract":"In this research, the Ag2CO3-PANI composite was synthesized with a simple precipitation method and then used as an effective adsorbent for adsorption of Methylene Blue cationic dyes from aqueous solution. Characterization of the adsorbent was carried out using UV–visible diffuse reflectance spectroscopy (UV–Vis DRS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and scanning electron microscopy (SEM). The various parameters such as pH, contact time, sorbent dosage, initial dye concentration, and dye solution temperature were investigated. The optimum photo-catalytic activity of Ag2CO3-PANI at a weight content of 50% PANI for the degradation of MB was almost 86% that is much higher than the pure Ag2CO3 and PANI. The results showed an efficient removal at pH 10.0, within 60 min, and by using 1 g L-1 Ag2CO3-PANI composite at the temperature of 32˚C. The kinetic and equilibrium data fit into pseudo-second-order kinetic (R2> 0.84) and Freundlich isotherm (R2> 0.99) models, respectively. Adsorption capacity (q0) calculated from Langmuir isotherm was found to be 55 mg/g. Thermodynamic studies indicated that the adsorption process was endothermic (ΔH°˃0). The adsorption/desorption experiments were carried out attaining regenerations of up to 97% from MB, using distilled water and 0.1N HCl. The composite indicated high efficiency adsorptive properties and high reusability. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86503851","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

Biomass higher heating value prediction analysis by ANFIS, PSO-ANFIS and GA-ANFIS models 基于ANFIS、PSO-ANFIS和GA-ANFIS模型的生物质高热值预测分析

Volume 1, Issue 3 Pub Date : 2018-10-04 DOI: 10.30955/gnj.002772

引用次数: 25

Odour impact assessment of a large municipal solid waste landfill under different working phases 某大型都市固体废物堆填区不同工程阶段的气味影响评估

Volume 1, Issue 3 Pub Date : 2018-10-04 DOI: 10.30955/gnj.002770

{"title":"Odour impact assessment of a large municipal solid waste landfill under different working phases","authors":"","doi":"10.30955/gnj.002770","DOIUrl":"https://doi.org/10.30955/gnj.002770","url":null,"abstract":"Odours are among the main causes of complaints in regards to environmental issues for a variety of plants, including landfills. The emissions from landfills can affect the quality of life and negatively influence the area nearby. To protect people living in the surroundings from excessive odour exposures, different environmental protection practices may be implemented. In order to optimize technical and economic aspects, various configurations should be taken into account. In this view, the odour dispersion modelling represents a suitable tool to simulate different scenarios. In the present study, the odour impact from a large landfill located in Borgo Montello (Lazio Region, Italy) has been assessed by a dispersion model. Different operating conditions were simulated, in view of minimizing the odour annoyance during the phase of temporary closure of an area of the investigated plant. The Calpuff model was selected as it is well recognized among the preferred models for assessing the long range transport of pollutants. The Odour Emission Rates, inputs to the model, were calculated based on the results of dynamic olfactometry. The outputs from the dispersion model were investigated to define the best measures for the control of the odour emissions during the most impactful operations. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85558515","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: 5

The Chemical and Biochemical Oxygen Demand Reduction By Armillaria tabescens In Malathion Supplemented Culture Medium 添加马拉硫磷培养基中蜜环菌的化学生化需氧量降低

Volume 1, Issue 3 Pub Date : 2018-09-27 DOI: 10.30955/gnj.002660

N. Yildirim, G. Erguven, E. Adar

{"title":"The Chemical and Biochemical Oxygen Demand Reduction By Armillaria tabescens In Malathion Supplemented Culture Medium","authors":"N. Yildirim, G. Erguven, E. Adar","doi":"10.30955/gnj.002660","DOIUrl":"https://doi.org/10.30955/gnj.002660","url":null,"abstract":"The extensive use of pesticides for controlling insects has been widely used in agricultural activities. However, the indiscriminate use of the pesticides has inflicted serious harmful problems to humans in the ecosystem. Our study aims to evaluating the capacity of Armillaria tabescens to remove the chemical oxygen demand (COD) and biochemical oxygen demand (BOD5) at different concentration of malathion insecticide (50, 100 and 150 ppm) under agitated (130 rpm) submerged culture conditions at 27 0C after 8 and 15 days. According to our results, A. tabescens has achieved COD reduction as 52.39, 27.24, and 38.30% at concentration of 50, 100 and 150 ppm respectively on 15 days. The BOD5 reduction rates were found as 78.2, 74.76 and 81.26% at 50, 100 and 150 ppm concentration respectively at the end of the 15th days. At the end of this time period, the dried biomass of A. tabescens was weighted and we have suggested that malathion in medium reduced the biomass production compared the control group (Sabouraud dextrose broth + A. tabescens). Our experiments have focused that; A. tabescens could be an alternative and useful fungus for bioremediation of wastewater containing malathion insecticide. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88240484","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

Improvement of sensory odour intensity scale using 1-butanol reference solutions for environmental odour evaluation 环境气味评价中1-丁醇参考溶液感官气味强度量表的改进

Volume 1, Issue 3 Pub Date : 2018-09-27 DOI: 10.30955/gnj.002779

引用次数: 1