Advances in Environmental Research最新文献_第2页

Stage by stage design for primary, conventional activated sludge, SBR and MBBR units for residential wastewater treatment and reusing 对生活污水处理和回用的初级、常规活性污泥、SBR和MBBR装置进行分阶段设计

Advances in Environmental Research Pub Date : 2020-12-01 DOI: 10.12989/AER.2020.9.4.233

S. Aziz, Imad A. Omar, M. Bashir, A. Mojiri

{"title":"Stage by stage design for primary, conventional activated sludge, SBR and MBBR units for residential wastewater treatment and reusing","authors":"S. Aziz, Imad A. Omar, M. Bashir, A. Mojiri","doi":"10.12989/AER.2020.9.4.233","DOIUrl":"https://doi.org/10.12989/AER.2020.9.4.233","url":null,"abstract":"To date, there is no central wastewater (WW) treatment plant in Erbil city, Kurdistan region, Iraq. Therefore, raw WW disposes to the environment and sometimes it used directly for irrigation in some areas of Erbil city. Disposal of the untreated WW to the natural environment and using for irrigation it causes problems for the people and the environment. The aims of the current work were to study the characteristics, design of primary and different secondary treatment units and reusing of produced WW. Raw WW samples from Ashty city-Erbil city were collected and analyzed for twenty three quality parameters such as Total Suspended Solids (TSS), total dissolved solids, total volatile and non-volatile solids, total acidity, total alkalinity, total hardness, five-day Biochemical Oxygen Demand (BOD5), Chemical Oxygen Demand (COD), biodegradability ratio (BOD5/COD), turbidity, etc. Results revealed that some parameters such as BOD5 and TSS were exceeded the standards for disposal of WW. Design and calculations for primary and secondary treatment (biological treatment) processes were presented. Primary treatment units such as screening, grit chamber, and flow equalization tank were designed and detailed calculation were illustrated. While, Conventional Activated Sludge (CAS), Sequencing Batch Reactor (SBR) and Moving Bed Biofilm Reactors (MBBR) were applied for the biological treatment of WW. Results revealed that MBBR was the best and economic technique for the biological treatment of WW. Treated WW is suitable for reusing and there is no restriction on use for irrigation of green areas inside Ashty city campus.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"212 1","pages":"233"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79421174","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: 6

Natural resource management: A systematic literature review 自然资源管理:系统文献综述

Advances in Environmental Research Pub Date : 2020-12-01 DOI: 10.12989/AER.2020.9.4.295

M. Asif, K. Zaman, Khan Burhan Khan

引用次数: 0

Preliminary studies on the microplastic pollution in Dal lake, Kashmir (first report) 克什米尔达尔湖微塑料污染初步研究(首份报告)

Advances in Environmental Research Pub Date : 2020-12-01 DOI: 10.12989/AER.2020.9.4.275

Juhi Firdous, Y. K. Mathur, M. Jeelani, A. Aziz, Seema Azmat, Syeed Mudasir

引用次数: 1

Contribution to the development of tiles made of paper board sludge 为发展纸板污泥制瓦片作出贡献

Advances in Environmental Research Pub Date : 2020-12-01 DOI: 10.12989/AER.2020.9.4.285

P. Velumani, P. Manikandan

{"title":"Contribution to the development of tiles made of paper board sludge","authors":"P. Velumani, P. Manikandan","doi":"10.12989/AER.2020.9.4.285","DOIUrl":"https://doi.org/10.12989/AER.2020.9.4.285","url":null,"abstract":"Growth of any country rest in the consumption of industrial wastes for its infrastructure amenities. Countries like India positively desires a vital utilization of industrial waste resembling paper sludge in the construction industry to make various building materials. Also, it is the duty of all civil engineers or researchers to attach them in mounting new materials from the waste dumped as land fillings. In every construction project, about 70% of cost accounts for the procurement of materials. If this, can be minimized consequently the cost of construction will certainly be condensed. Research has established that the waste paper sludge can be reused in the construction field for a probable scope. The construction diligences munch through a massive quantity of non-renewable resources. On the additional dispense, more waste paper board sludge ends up in landfills or dumpsites than those recycled. Consequently, waste paper sludge for use as a construction material composes a step towards sustainable development. Keeping this in mind an endeavor has been made to utilize paper board sludge acquired from the paper board industry and used with several pozzolanic and cementitious materials for a specific purpose. The addition of paper sludge has been varied from 0% to 20% by weight of cement. The tests done with the samples expose that four samples showed significant outcomes with remarkable strength and durability properties which guide to move for the next phase of research for producing lightweight tiles.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"115 1","pages":"285"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76932347","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

The applications of ozone-based advanced oxidation processes for wastewater treatment: A review 臭氧深度氧化技术在污水处理中的应用综述

Advances in Environmental Research Pub Date : 2020-09-01 DOI: 10.12989/AER.2020.9.3.191

M. Hussain, M. S. Mahtab, I. Farooqi

{"title":"The applications of ozone-based advanced oxidation processes for wastewater treatment: A review","authors":"M. Hussain, M. S. Mahtab, I. Farooqi","doi":"10.12989/AER.2020.9.3.191","DOIUrl":"https://doi.org/10.12989/AER.2020.9.3.191","url":null,"abstract":"The rise in population and industrialization accounts for the generation of a huge amount of wastewaters. The treatment of this wastewater is obligatory to safeguard the environment and various life forms. Conventional methods for high strength wastewater treatment coming out to be ineffective. Advanced oxidation processes (AOPs) for such wastewater treatment proved to be very effective particularly for the removal of various refractory compounds present in the wastewater. Ozone based AOPs with its high oxidizing power and excellent disinfectant properties is considered to be an attractive choice for the elimination of a large spectrum of refractory compounds. Furthermore, it enhances the biodegradability of wastewaters after treatment which favors subsequent biological treatments. In this review, a detailed overview of the AOPs (like the Fenton process, photocatalysis, Electrochemical oxidation, wet air oxidation, and Supercritical water oxidation process) has been discussed explicitly focusing on ozone-based AOPs (like O3, O3/H2O2, O3/UV, Ozone/Activated carbon process, Ozone/Ultrasound process, O3/UV/H2O2 process). This review also comprises the involved mechanisms and applications of various ozone-based AOPs for effective municipal/industrial wastewaters and landfill leachate treatment. Process limitations and rough economical analysis were also introduced. The conclusive remarks with future research directions also underlined. It was found that ozonation in combination with other effective AOPs and biological methods enhances treatment efficacies. This review will serve as a reference document for the researchers working in the AOPs field particularly focusing on ozone-based AOPs for wastewater treatment and management systems.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"2 1","pages":"191-214"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75200235","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: 16

Comparative assessment of surface and ground water quality using geoinformatics 地表水和地下水水质的地理信息学比较评价

Advances in Environmental Research Pub Date : 2020-09-01 DOI: 10.12989/AER.2020.9.3.151

Giridhar M.V.S.S, S. Mohan, D. Kumar

引用次数: 1

The impact of municipal waste disposal of heavy metals on environmental pollution: A case study for Tonekabon, Iran 城市废物处理重金属对环境污染的影响:伊朗托内卡邦的个案研究

Advances in Environmental Research Pub Date : 2020-09-01 DOI: 10.12989/AER.2020.9.3.175

Aziz Azizpour, Mohammad Azarafza, H. Akgün

{"title":"The impact of municipal waste disposal of heavy metals on environmental pollution: A case study for Tonekabon, Iran","authors":"Aziz Azizpour, Mohammad Azarafza, H. Akgün","doi":"10.12989/AER.2020.9.3.175","DOIUrl":"https://doi.org/10.12989/AER.2020.9.3.175","url":null,"abstract":"unicipal solid waste disposal is considered as one of the most important risks for environmental contamination which necessitates the development of strategies to reduce destructive consequences on the ecosystem as related especially to heavy metal accumulation. This study investigates heavy metal (i.e., As, Cd, Co, Cr, Cu, Mn, Ni, Pb, Zn) accumulation in the Tonekabon region, NW of Iran that is related to city waste disposal and evaluates the environmental impact in the Caspian Sea coastal region. For this purpose, after performing field studies and collecting 50 soil specimens from 5 sites of the study area, geochemical tests (i.e., inductively coupled plasma mass spectrometry, atomic absorption spectroscopy and x-ray fluorescence) were conducted on the soil specimens collected from the 5 sites (named as Sites A1, A2, A3, A4 and A5) and the results were used to estimate the pollution indices (i.e., geo-accumulation index, normalized enrichment factor, contamination factor, and pollution load index). The obtained indices were utilized to assess the eco-toxicological risk level in the landfill site which indicated that the city has been severely contaminated by Cu, Mn, Ni, Pb and Zn. These levels have been developed along the stream towards the nearshore areas indicating uptake of soil degradation. The heavy metal contamination was classified to range from unpolluted to highly polluted, which indicated serious heavy metal pollution in the study area as related to municipal solid waste disposal in Tonekabon.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"36 1","pages":"175"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91185498","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

In situ isolation and characterization of the biosurfactants of B. Subtilis 枯草芽孢杆菌生物表面活性剂的原位分离与鉴定

Advances in Environmental Research Pub Date : 2020-09-01 DOI: 10.12989/AER.2020.9.3.215

Wasim S. Akthar, Mohamed Sheik Aadham, A. S. Nisha

{"title":"In situ isolation and characterization of the biosurfactants of B. Subtilis","authors":"Wasim S. Akthar, Mohamed Sheik Aadham, A. S. Nisha","doi":"10.12989/AER.2020.9.3.215","DOIUrl":"https://doi.org/10.12989/AER.2020.9.3.215","url":null,"abstract":"Crude oils are essential source of energy. It is majorly found in geographical locations beneath the earth's surface and crude oil is the main factor for the economic developments in the world. Natural crude oil contains unrefined petroleum composed of hydrocarbons of various molecular weights and it contains other organic materials like aromatic compounds, sulphur compounds, and many other organic compounds. These hydrocarbons are rapidly getting degraded by biosurfactant producing microorganisms. The present study deals with the isolation, purification, and characterization of biosurfactant producing microorganism from oil-contaminated soil. The ability of the microorganism producing biosurfactant was investigated by well diffusion method, drop collapse test, emulsification test, oil displacement activity, and blue agar plate method. The isolate obtained from the oil contaminated soil was identified as Bacillus subtilis. The identification was done by microscopic examinations and further characterization was done by Biochemical tests and 16SrRNA gene sequencing. Purification of the biosurfactant was performed by simple liquid-liquid extraction, and characterization of extracted biosurfactants was done using Fourier transform infrared spectroscopy (FTIR). The degradation of crude oil upon treatment with the partially purified biosurfactant was analyzed by FTIR spectroscopy and Gas-chromatography mass spectroscopy (GC-MS).","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"37 1","pages":"215-232"},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80618588","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

Synthesis of magnetite iron pumice composite for heterogeneous Fenton-like oxidation of dyes 磁铁矿铁浮石复合材料的合成及其非均相fenton类氧化染料的研究

Advances in Environmental Research Pub Date : 2020-07-01 DOI: 10.12989/AER.2020.9.3.161

D. Çifçi, Süreyya Meriça

{"title":"Synthesis of magnetite iron pumice composite for heterogeneous Fenton-like oxidation of dyes","authors":"D. Çifçi, Süreyya Meriça","doi":"10.12989/AER.2020.9.3.161","DOIUrl":"https://doi.org/10.12989/AER.2020.9.3.161","url":null,"abstract":"The removal of two dyes, namely Methylene Blue (MB) and Reactive Brillant Red (RR) from aqueous solution was investigated using magnetite iron coated pumice (MIP) composite in the Fenton-like oxidation process. A weight ratio of 2.5 g (with the molar ratio of Fe3+ to Fe2+ to be 2) (5%) of iron to the total pumice (50 g) was enabled during synthesis of catalyst. Surface composition and characteristics of the catalyst were assessed by SEM-EDX, FT-IR, Raman spectral analysis. The effect of the amount of pumice solely used or MIP, H2O2 concentration, pH and initial concentration of MB or RR dyes on Fenton-like process efficiency was investigated. EDAX spectrums of pumice and MIP showed that oxygen and silisium are the major elements. The Fe content of MIP increased to 2.24%. SEM, FT-IR and Raman spectrums confirmed the impregnation of Fe on pumice surface. The experimental results revealed that high removal rates of dyes could be obtained using MIP that demonstrated a higher stability for removal of MB dye. pH affected the removal efficiency of both dyes and the degradation of both dyes was sharply dropped when pH was increased above 4. The removal of dyes did not significantly change with increasing H2O2 concentration. Degradation rates of both MB and RR dyes increased 3.3 and 2.8 times with the use of MIP compared to pumice alone, respectively. Furthermore, MIP enabled a good removal efficiency at higher dye concentrations. It can be emphasized that MIP composite can be used in the heterogeneous Fenton-like systems considering the economic and easily separation aspects.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"5 1","pages":"161-173"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87909622","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

Water table: The dominant control on CH₄ and CO₂ emission from a closed landfill site 地下水位:对封闭填埋场nh4和CO 2排放的主要控制因素

Advances in Environmental Research Pub Date : 2020-06-01 DOI: 10.12989/AER.2020.9.2.123

A. Nwachukwu, N. Nwachukwu

{"title":"Water table: The dominant control on CH₄ and CO₂ emission from a closed landfill site","authors":"A. Nwachukwu, N. Nwachukwu","doi":"10.12989/AER.2020.9.2.123","DOIUrl":"https://doi.org/10.12989/AER.2020.9.2.123","url":null,"abstract":"A time series dataset was conducted to ascertain the effect of water table on the variability in and emission of CH₄ and CO₂ concentrations at a closed landfill site. An in-situ data of methane/carbon dioxide concentrations and environmental parameters were collected by means of an in-borehole gas monitor, the Gasclam (Ion Science, UK). Linear regression analysis was used to determine the strength of the correlation between ground-gas concentration and water table. The result shows CH₄ and CO₂concentrations to be variable with strong negative correlations of approximately 0.5 each with water table over the entire monitoring period. The R² was slightly improved by considering their concentration over single periods of increasing and decreasing water table, single periods of increasing water table, and single periods of decreasing water table; their correlations increased significantly at 95% confidence level. The result revealed that fluctuations in groundwater level is the key driving force on the emission of and variability in ground-gas concentration and neither barometric pressure nor temperature. This finding further validates the earlier finding that atmospheric pressure – the acclaimed major control on the variability/migration of CH₄ and CO₂ concentrations on contaminated sites, is not always so.","PeriodicalId":7287,"journal":{"name":"Advances in Environmental Research","volume":"03 1","pages":"123"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79569804","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