Volume 1, Issue 3最新文献_第7页

Kinetics Study of The Ability of Compost Material for Removing 〖Cu〗^(2+) from Wastewater 堆肥材料去除废水中〖Cu〗^(2+)的动力学研究

Volume 1, Issue 3 Pub Date : 2018-09-26 DOI: 10.30955/gnj.002865

M. Al-Alawi

引用次数: 1

Treatment of tannery wastewater using aluminium formate: influence of the formate over sulphate based coagulant 用甲酸铝处理制革厂废水:甲酸对硫酸盐基混凝剂的影响

Volume 1, Issue 3 Pub Date : 2018-09-26 DOI: 10.30955/gnj.002528

{"title":"Treatment of tannery wastewater using aluminium formate: influence of the formate over sulphate based coagulant","authors":"","doi":"10.30955/gnj.002528","DOIUrl":"https://doi.org/10.30955/gnj.002528","url":null,"abstract":"Tannery industries provoke the conspicuous quantity of deleterious effluent which has to be treated prior to discharge into the environment. Pre-treatment of tannery wastewater with aluminium sulphate is well known over decades, but due to the corrosive nature of sulphate this pre-treated water causes several issues in the biological treatment system. To overcome this issue a study was performed to understand the coagulant activity of aluminium formate and aluminium sulphate. The effect of coagulant activity as a function of pH and coagulant dose of Aluminium formate was studied and found that it surpassed aluminium sulphate in terms of Cr(VI), sulphate and COD removal by 10%, 6% and 10% respectively, while turbidity removal for both coagulants was found approximately equal. Possible mechanistic approach to the coagulation property of aluminium formate and aluminium sulphate could be inter particle bridging and sweep coagulation respectively. Formate [HCOO-] can be utilized as a counter anion in the place of commonly used sulphate anions as it is biodegradable, non-toxic and corrosive free compound. Therefore, Aluminium formate can be a promising coagulant for the pre-treatment of tannery wastewater. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89983868","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: 9

A sample study on nitrogen removal from polluted streams by using hybrid natural wastewater treatment systems 混合自然污水处理系统去除污水中氮的样本研究

Volume 1, Issue 3 Pub Date : 2018-09-26 DOI: 10.30955/gnj.002715

{"title":"A sample study on nitrogen removal from polluted streams by using hybrid natural wastewater treatment systems","authors":"","doi":"10.30955/gnj.002715","DOIUrl":"https://doi.org/10.30955/gnj.002715","url":null,"abstract":"The ecological structure and function of the water reservoirs deteriorate dramatically because of streams fed by the excess nitrogen-containing wastewater. To protect the water reservoirs from polluted streams, structures such as natural wastewater treatment (NWT) systems to be created inside or outside streams may be a most suitable and economical solution method to overcoming the problem. In this study, a hybrid NWT system was installed to remove nitrogenous pollutants in Karasu creek (Nigde city, Turkey) in 2014. The system built near the creek consisted of feeding basin (FB), settlement basin (SB), free water surface-constructed wetland (FWS-CW), and overland flow (OF) system respectively. Despite quite high nitrogen loading rates, the system managed to reduce NH4+-N from average 29 mg/L to 12 mg/L and TN from 44 mg/L to 19 mg/L with an average removal efficiency of 57 %. Results revealed that hydraulic and nitrogen loading rate, temperature and seasonal variation, BOD/TKN ratio, hydraulic residence time (HRT), and the use of the filter material were effective on nitrogen removal. The results suggest that the hybrid NWT systems can be used as a low-cost wastewater treatment alternative to improve water quality in streams contaminated by nitrogenous pollutants in the similar areas. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82641162","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

Fugitive Methane and Odour Emission Characterization at a Composting Plant using Remote Sensing Measurements 利用遥感测量对堆肥厂的逸散甲烷和气味排放进行表征

Volume 1, Issue 3 Pub Date : 2018-09-26 DOI: 10.30955/gnj.002802

And Kranert

{"title":"Fugitive Methane and Odour Emission Characterization at a Composting Plant using Remote Sensing Measurements","authors":"And Kranert","doi":"10.30955/gnj.002802","DOIUrl":"https://doi.org/10.30955/gnj.002802","url":null,"abstract":"Gaseous emissions of biowaste treatment facilities have several adverse effects. In Germany, a law to collect biological waste separately was introduced in January 2015. Since then there is a discussion about greenhouse gases which could be emitted in a significant rate and exceed the positive aspects. Default factors for methane and nitrous oxide from biological treatments given by the Intergovernmental Panel on Climate Change (IPPC) suggests that fugitive emissions even from composting processes should not be neglected. The research work presents an innovative method to quantify fugitive methane and odour emissions at a composting plant. The proposed method uses a combination of a remote sensing measurements and the application of a backwards Lagrangian stochastic (bLs) based micrometeorological dispersion modelling. The remote sensing technology is based on the absorption of infrared light with a wavelength sensitive to the substance to be determined. With the downwind measured methane concentration deducted by the upwind measured background concentration and the known wind conditions, a gas dispersion is simulated back in time to estimate the gas emission rate of a plant. Using the methane emissions as a tracer for dispersion characteristics in the atmosphere it is even possible to estimate a more accurate odour emission rate from passive sources at composting plants. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87557190","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 of number of total mortality, cardiovascular and Respiratory mortality attributed to air pollutants of Tehran in 2005-2014 2005-2014年德黑兰空气污染物导致的总死亡率、心血管和呼吸系统死亡率研究

Volume 1, Issue 3 Pub Date : 2018-09-26 DOI: 10.30955/gnj.002459

J. JafariA., R. R. Kalantari

{"title":"Study of number of total mortality, cardiovascular and Respiratory mortality attributed to air pollutants of Tehran in 2005-2014","authors":"J. JafariA., R. R. Kalantari","doi":"10.30955/gnj.002459","DOIUrl":"https://doi.org/10.30955/gnj.002459","url":null,"abstract":"Over the last few decades, the evidence on the adverse effects on the health of air pollution has been raised. Mortality is the most important health effect of ambient air pollution. We studied the relation between mortality and criteria pollutant air in Tehran, one of the highly industrialized, densely populated area and most polluted cities of the reign, during 2005-2014. For this purpose, we applied the approach proposed by the World Health Organization using the AirQ 2.2.3 model. Hourly concentrations of pollutants were taken from the Tehran environmental protection agency and Air Quality Control Company. In this model, the attributable proportion of health outcome, the annual number of excess cases of mortality for all causes were estimated. According to results, the number of total mortality caused by exposure to O3, NO2, SO2, PM10, PM2.5 in the past decade was 8042, 15141, 8136, 17776 and 20015 cases, respectively. The number of cumulative total mortality was 53110 cases in ten years. Furthermore, the number of cumulative cardiovascular and respiratory mortality 33887 and 8168 cases was estimated in last decade. A large number of residents of Tehran have died as a result of exposure to air pollutants; therefore for control and management of air pollution, appropriate actions on health and the environment should be performed. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80750971","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

Optimization of process variables for treatment of food industry effluents by electrocoagulation 电凝法处理食品工业废水工艺变量的优化

Volume 1, Issue 3 Pub Date : 2018-09-26 DOI: 10.30955/gnj.002640

引用次数: 4

Assessment of the biodegradation capacity of Azolla on polycyclic aromatic hydrocarbons in crude oil 杜鹃对原油中多环芳烃的生物降解能力评价

Volume 1, Issue 3 Pub Date : 2018-09-26 DOI: 10.30955/gnj.002544

T. Kösesakal

{"title":"Assessment of the biodegradation capacity of Azolla on polycyclic aromatic hydrocarbons in crude oil","authors":"T. Kösesakal","doi":"10.30955/gnj.002544","DOIUrl":"https://doi.org/10.30955/gnj.002544","url":null,"abstract":"In this study, the potential use of Azolla filiculoides Lam. for the bioremediative solution to polycyclic aromatic hydrocarbon (PAH) pollution due to crude oil spills in freshwater was investigated. The plants were grown in nitrogen-free Hoagland nutrient solution media containing 0.05%, 0.1%, 0.2%, 0.3%, 0.4% and 0.5% crude oil by volume for 15 days under greenhouse conditions. Relative growth rates of A. filiculoides decreased in the presence of crude oil in a concentration-dependent manner. The probable influence of A. filiculoides on the biodegradation of polycyclic aromatic hydrocarbons was measured by using synchronous UV fluorescence spectroscopy. GC-MS analysis were also carried out to elucidate the behavior of the oil in experimental and control samples. Although 1-2 rings PAHs have not been encountered in control or plant samples, the measured intensity for 3-4 ring PAHs in plant samples was remarkably lower in comparison to the control. Furthermore, these results demonstrated that the predominant efficacy of the A. filiculoides was for 3-4 ring PAHs at the range 0.05 to 0.2% crude oil concentrations. It could be concluded that the bioremediative potential of A. filiculoides for the removal of polycyclic aromatic hydrocarbons strongly depends on the amount of oil in the contaminated water resource. In other words, A. filiculoides could be used more effectively after the removal of excess crude oil in the spilled freshwater areas. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85438145","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

Uncertainty analysis in sizing rainwater harvesting tanks in an isolated island with limited water resources 水资源有限的孤岛集雨池规模的不确定性分析

Volume 1, Issue 3 Pub Date : 2018-09-26 DOI: 10.30955/gnj.002535

Koumoura K.Α, F. E.G

引用次数: 10

Treatment of textile wastewater using a novel electrocoagulation reactor design 新型电絮凝反应器处理纺织废水

Volume 1, Issue 3 Pub Date : 2018-08-29 DOI: 10.5772/INTECHOPEN.76876

A. Naje, M. A. Ajeel, P. Alaba, Shreeshivadasan Chelliapan

{"title":"Treatment of textile wastewater using a novel electrocoagulation reactor design","authors":"A. Naje, M. A. Ajeel, P. Alaba, Shreeshivadasan Chelliapan","doi":"10.5772/INTECHOPEN.76876","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.76876","url":null,"abstract":"This study explored the best-operating conditions for a novel electrocoagulation (EC) reactor with the rotating anode for textile wastewater treatment. The influence of operating parameters like inter-electrode distance (IED), current density (CD), temperature, pH, operating time (RT), and rotation speed on the removal efficiency of the contaminant was studied. A comparative study was done using conventional model with static electrodes in two phases under same textile wastewater The findings revealed that the optimal conditions for textile wastewater treatment were attained at RT = 10 min, CD = 4 mA/cm2, rotation speed = 150 rpm, temperature = 25oC, IED = 1cm, and pH = 4.57. The removal efficiencies of colour, biological oxygen demand (BOD), turbidity, chemical oxygen demand (COD), and total suspended solid (TSS) were 98.50%, 95.55%, 96%, 98% and 97.10% within the first 10 min of the reaction. The results of the experiment reveal that the newly designed reactor incorporated with cathode rings and rotated anode impellers provide a superior treatment efficiency within a short reaction time. The novel EC reactor with a rotating anode significantly enhanced textile wastewater treatment compared to the conventional model. The values of adsorption and passivation resistance validated the pollutants removal rate. \u0000","PeriodicalId":23539,"journal":{"name":"Volume 1, Issue 3","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2018-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72850366","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