Managing Taste and Odour Metabolite Production in Drinking Water Reservoirs: the Importance of Ammonium As a Key Nutrient Trigger T
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Evaluation of Ozonation on Levels of the Off-Flavor Compounds Geosmin and 2-Methylisoborneol in Water and Rainbow Trout Oncorhyn
Aquacultural Engineering 43 (2010) 46–50 Contents lists available at ScienceDirect Aquacultural Engineering journal homepage: www.elsevier.com/locate/aqua-online Evaluation of ozonation on levels of the off-flavor compounds geosmin and 2-methylisoborneol in water and rainbow trout Oncorhynchus mykiss from recirculating aquaculture systems Kevin K. Schrader a,∗, John W. Davidson b, Agnes M. Rimando a, Steven T. Summerfelt b a United States Department of Agriculture, Agricultural Research Service, Natural Products Utilization Research Unit, National Center for Natural Products Research, Post Office Box 8048, University, MS 38677-8048, USA View metadata, citation and similar papers at core.ac.uk brought to you by CORE b The Conservation Fund Freshwater Institute, 1098 Turner Road, Shepherdstown, WV 25443, USA provided by Elsevier - Publisher Connector article info abstract Article history: Common “off-flavors” in fish cultured in recirculating aquaculture systems (RAS) are “earthy” and “musty” Received 29 January 2010 due to the presence of the off-flavor metabolites geosmin and 2-methylisoborneol (MIB), respectively. Accepted 17 May 2010 Previously, ozone addition has been applied to RAS at relatively low doses to break refractory organic molecules (i.e., reducing color), microflocculate fine particulate matter (i.e., increasing solids removal), Keywords: and oxidize nitrite to nitrate, but the effect of ozone addition at these dosing rates on levels of off-flavor Aquaculture compounds was unknown. Ozonation has been used in municipal drinking water facilities to reduce the Geosmin levels of these compounds, to improve water taste, and to subsequently reduce consumer complaints. In 2-Methylisoborneol Off-flavor this study, the effects of ozone addition to the inlet water of the RAS culture tanks on levels of geosmin Ozone and MIB in the culture water and fish flesh were evaluated. -
Geosmin and 2-MIB Removal by Full-Scale Drinking Water Treatment Processes in the Republic of Korea
water Article Geosmin and 2-MIB Removal by Full-Scale Drinking Water Treatment Processes in the Republic of Korea Keug Tae Kim 1 and Yong-Gyun Park 2,* 1 Department of Environmental & Energy Engineering, Suwon University, 17 Wauan-gil, Bongdam-eup, Hwaseong-si 18323, Korea; [email protected] 2 Pioneer Team Research Institute, GS Engineering &Construction, 33, Jong-ro, Jongro-gu, Seoul 03159, Korea * Correspondence: [email protected] Abstract: Due to climate change, population growth, industrialization, urbanization, and water contamination, it is becoming more difficult to secure and supply clean and safe drinking water. One of the challenges many water utilities often face is the taste and odor (T&O) problem in drinking water treatment plants, mostly associated with geosmin and 2-MIB. These representative T&O compounds are mainly produced by the metabolism of blue-green algae (cyanobacteria), especially in summer. In this study, the correlation between algae blooms and T&O compounds was identified in the intake and raw water of a large-scale water treatment plant in the Republic of Korea. The removal efficiency of geosmin and 2-MIB by each treatment process was intensively evaluated. According to the obtained results, ozonation and granular activated carbon (GAC) adsorption were more effective for removing the troublesome compounds compared to other water treatment processes, such as coagulation/flocculation, filtration, and chlorination. Because of their seasonal concentration variation and different removal rates, optimal operation methods need to be developed and implemented for drinking water treatment plants to solve the T&O problems. Citation: Kim, K.T.; Park, Y.-G. -
Environment Agency Plan Local
local environment agency plan BRUE & AXE THIRD ANNUAL REVIEW E n v ir o n m e n t Ag e n c y - SoufcV' ViesV > E n v ir o n m e n t Ag e n c y NATIONAL LIBRARY & INFORMATION SERVICE HEAD OFFICE Rio House. Waterside Drive, Aztec West. Almondsbury. Bristol BS32 4UD CONTENTS Map: The River Brue Catchment Page 1 Introduction 1 1.1. Brue & Axe Third Annual Review 1 1.2. The Environment Agency 1 1.3. Local Environment Agency Plans 2 1.4. The LEAP Steering Group 3 1.5. Making It Happen - Local Contributions 3 1.6. Catchment Overview 4 1.7. Resources 5 1.8. Priorities 5 1.9. Department for Environment, Food & Rural Affairs (DEFRA) 6 2 Legislation 7 2.1. The Habitats Directive 7 2.2. The Countryside and Rights of Way Act . 9 2.3. The Water Framework Directive 10 2.4. The Landfill Directive 10 3 Summary of Progress 11 3.1. Development Pressure 11 3.2. Flood Defence 12 3.3. Catchment Flood Management Plans 12 3.4. Flood Warning 12 4 Action Plan Monitoring Report 14 Water Resources 14 Biodiversity 18 Fisheries 22 Integrated River-Basin Management - Somerset Levels & Moors 24 Water Quality 28 Bathing Water Quality 30 Waste 33 Integrated Pollution Prevention and Control 35 Air Quality 36 Recreation 37 Climate Change 37 List of Figures Fig 1: Area budgets for 2001/2001 5 Fig 2: The assessment process under the Habitats & Birds Directives 7 Fig 3: Natura 200 sites in the Brue & Axe catchment 8 Fig 4: GQA Grade definitions 28 Fig 5: Percentage length of watercourse by chemical GQA 29 Fig 6: Bathing water survey results 30 Fig 7: Environmental performance -
Water Quality and Relation to Taste-And-Odor Compounds in the North Fork Ninnescah River and Cheney Reservoir South-Central Kans
Prepared in cooperation with the City of Wichita, Kansas Water Quality and Relation to Taste-and-Odor Compounds in the North Fork Ninnescah River and Cheney Reservoir, South-Central Kansas, 1997–2003 Scientific Investigations Report 2006−5095 U.S. Department of the Interior U.S. Geological Survey Water Quality and Relation to Taste-and- Odor Compounds in the North Fork Ninnescah River and Cheney Reservoir, South-Central Kansas, 1997–2003 By Victoria G. Christensen, Jennifer L. Graham, Chad R. Milligan, Larry M. Pope, and Andrew C. Ziegler Prepared in cooperation with the City of Wichita, Kansas Scientific Investigations Report 2006–5095 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior P. Lynn Scarlett, Acting Secretary U.S. Geological Survey P. Patrick Leahy, Acting Director U.S. Geological Survey, Reston, Virginia: 2006 For sale by U.S. Geological Survey, Information Services Box 25286, Denver Federal Center Denver, CO 80225 For more information about the USGS and its products: Telephone: 1-888-ASK-USGS World Wide Web: http://www.usgs.gov/ Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted materials contained within this report. Suggested citation: Christensen, V.G., Graham, J.L., Milligan, C.R., Pope, L.M., and Ziegler, A.C., 2006, Water quality and relation to taste- and-odor compounds in the North Fork Ninnescah River and Cheney Reservoir, south-central Kansas, 1997–2003: U.S. -
River Axe Biomass of Fish (All Species) 1991 Biomass (Gms/Square Metre) Iue 1 Figure
NRA/SLFAC/92/14 FISHERY SURVEY OF THE RIVER AXE CATCHMENT 1. INTRODUCTION This fishery survey of the River Axe was started in April 1991 and concluded in October 1991. The watercourses surveyed were the River Axe itself together with its major tributaries, namely the River Cheddar Yeo and the Hixham Rhyne. 2. TOPOGRAPHY AND GEOLOGY 2.1 The headwaters of the River Axe are actually on top of Mendip and enter swallet holes. The recognised source of the river is Wookey Hole, which is one of the main springs arising from the Mendip limestone. The river falls progressively for the first 2 kilometres and then divides artificially into two branches. The most southerly, known as the Lower River Axe is in fact higher following the contour line through several villages and historically feeding several mills with water. Burcott Mill has been restored and still functions as a water mill. The northerly branch runs through Wookey and creates two fords before reuniting with the southerly branch at the top of Vestbury Moor. 2.2 The Axe valley part of the Somerset Moors and Levels is underlain primarily by alluvial clay of freshwater, marine and brackish origin. Where the river crosses this alluvial valley it has been straightened and widened since 1800. In the early 19th century there was a major scheme which cut off numerous meanders. The Cheddar Yeo was also realigned at the same time. These alterations were so dramatic that what are now the lowest reaches of the Yeo were once part of the course of the Axe. -
University of the Third Age Newsletter May 2019 Sheptonmalletu3a.Org.Uk
U3A Newsletter May 2019 University of the Third Age Newsletter May 2019 sheptonmalletu3a.org.uk Contents 1. Chat from the Chair 4. U3A Regional and National News 2. What’s On 5. Group News Events, speaker meetings, Monthly activities, featured groups, coffee mornings, outings, reports contacts 3. Members’ Corner 6. Committee Members Local interest and activities, articles, reminiscences, photographs 1. Chat from the Chair "Some old-fashioned things like fresh air and sunshine are hard to beat," writes Laura Ingalls Wilder. Enjoy the coming month of May, it is an opportunity to be out and about and having celebrated the Easter holiday in April, we now have two Bank holidays to look forward to. It really feels like Spring has arrived at last. Thank you to everyone who came along to the renewal days in March. We have 182 members at present but if you have not yet renewed your membership and wish to do so, please complete your forms as soon as possible and send or give to Maggie Fowle with your cheque or bank details. This will ensure that all our records for the Third Age Trust, insurance and for us are up to date and correct. Amongst all the boxes to Racing Success be ticked and completed on renewal day was one asking 'what Wincanton Races Outing new activity would you like to see?' Dancing, board games and Page 4 exercise were listed, if this was you and you would like to come along to a coffee morning with a view to progressing these then please get in touch with me or anyone on the committee. -
Safety Data Sheet
SAFETY DATA SHEET According to JIS Z 7253:2019 Revision Date 16-Feb-2021 Version 7.01 Section 1: PRODUCT AND COMPANY IDENTIFICATION Product name (±)-Geosmin-d3 Standard Solution (1mg/mL Methanol Solution) Product code 072-06081 Manufacturer FUJIFILM Wako Pure Chemical Corporation 1-2 Doshomachi 3-Chome Chuo-ku, Osaka 540-8605, Japan Phone: +81-6-6203-3741 Fax: +81-6-6203-5964 Supplier FUJIFILM Wako Pure Chemical Corporation 1-2 Doshomachi 3-Chome, Chuo-ku, Osaka 540-8605, Japan Phone: +81-6-6203-3741 Fax: +81-6-6203-2029 Emergency telephone number +81-6-6203-3741 / +81-3-3270-8571 Recommended uses and For research use only restrictions on use Section 2: HAZARDS IDENTIFICATION GHS classification Classification of the substance or mixture Flammable liquids Category 2 Acute toxicity - Oral Category 4 Serious eye damage/eye irritation Category 2A Reproductive Toxicity Category 1B Specific target organ toxicity (single exposure) Category 1, Category 3 Category 1 central nervous system, Visual organ, systemic toxicity Category 3 Narcotic effects Specific target organ toxicity (repeated exposure) Category 1 Category 1 central nervous system, Visual organ Pictograms Signal word Danger Hazard statements H225 - Highly flammable liquid and vapor H319 - Causes serious eye irritation H302 - Harmful if swallowed H360 - May damage fertility or the unborn child H336 - May cause drowsiness or dizziness H370 - Causes damage to the following organs: central nervous system, Visual organ, systemic toxicity H372 - Causes damage to the following organs through -
Cheddar Gorge Walk Guide
CHEDDAR GORGE DIFFICULTY & TRAIL TYPE INFORMATION & WALK HIGHLIGHTS Walking | Moderate At almost 400ft (122m) deep and 3 miles long, this is England’s largest gorge, and with its weathered crags and pinnacles, one of our most spectacular natural sites. It plays host to DISTANCE & OS MAP a varied community of specialized plants and wildlife, many of which you’ll get to spot on 8km (5 miles) this exhilarating circular walk. Explorer: 141 TERRAIN Landranger: 182 This is a moderate 5 mile (8km) route along paths. Several stiles and kissing gates, rough HOW TO GET THERE walking in sections and some steep climbs. It is not advisable to attempt this walk in foggy or very windy weather. BY BIKE: Strawberry Line (National Cycle Network Route 26) an 8 mile route linking Cheddar to Kings Wood, Winscombe and Yatton. SAFETY IN CHEDDAR GORGE: Please do not stand under cliffs as small rocks may fall at www.sustrans.org.uk any time. Use only footpaths signed for the gorge walk at the top and bottom of Cheddar BY BUS: Service 668, Street to Lower Langford. Gorge – it is dangerous to depart from these paths. Service 126, Weston-super-Mare to Wells. BY CAR: Take A371 and follow signs to Cheddar. FACILITIES • Pay and Display car parks on both sides of the gorge (not National Trust) RESPECT - PROTECT - ENJOY Sections of this circular walk travel through wildlife friendly areas. Please be aware of this and know your Countryside Code: • Leave gates and property as you find them and keep to paths • Leave no trace of your visit and take your litter home • Keep dogs under effective control • Be considerate of locals and others enjoying the outdoors • Follow advice and local signs CONTACT DETAILS Tel: 01761 462338 [email protected] mendiphillsaonb.org.uk CHEDDAR GORGE DIRECTIONS & INFORMATION (1) Take the track called Crufic lane, which is off Cheddar High Street, opposite the National (5) Bear Right rather than taking the route marked to Draycott, and continue until you see a Trust Information Centre. -
Chapter I : General Introduction
Sorbonne Université Ecole doctorale 129 Science de l’environnement INRA UMR 1402 ECOSYS Écologie fonctionnelle et écotoxicologie des agroécosystèmes Study of the effect of organic waste products amendments and microbial diversity on volatile organic compounds emissions by soil Par Letizia ABIS Thèse de doctorat de Science de l’environnement Dirigée par Benjamin Loubet Présentée et soutenue publiquement le 1 Février 2019 Devant un jury composé de : Rapporteur Michael Staudt HDR CEFE/CRNS Montpellier Rapporteur Françoise Binet HDR ECOBIO Rennes Examinatrice Engracia Madejón DR IRNAS-CSIC Séville Examinateur Thomas Eglin IR ADEME Angers Examinateur Jean-Marie Mouchel PR UPMC Paris Directeur de thèse Benjamin Loubet HDR INRA Grignon Co-directrice de thèse Sophie Bourgeteau-Sadet MC AgrosupDijon/INRA Dijon A mia madre, con tutto l’amore del mondo Acknowledgements Summary BACKGROUND 1 CHAPTER I 3 I. GENERAL INTRODUCTION 5 I.1 What are Volatile Organic Compounds (VOCs)? 5 I.2 The regulatory context 6 I.2.1 VOCs affect human health and crop productions 6 I.2.2 The regulatory context 6 I.3 The role of VOCs in air pollution and climate change 7 I.3.1 The atmosphere composition 7 I.3.2 Tropospheric air pollution 8 I.3.2.1 VOCs lifetime 8 I.3.2.2 The role of VOCs in ozone formation 9 I.3.2.3 VOCs as precursor of particulate matter (or secondary organic aerosol – SOA) 11 I.3.2.3 VOCs effects on air quality and climate change 12 I.4 Biogenic Volatile Organic Compounds 13 I.4.1 Main sources and sinks 13 I.4.2 Feedbacks effects of bVOC on climate 14 -
Evaluation of the Impact of Nitrate-Nitrogen Levels in Recirculating Aquaculture Systems on Concentrations of the Off-Flavor
Aquacultural Engineering 57 (2013) 126–130 View metadata, citation and similar papers at core.ac.uk brought to you by CORE Contents lists available at ScienceDirect provided by Elsevier - Publisher Connector Aquacultural Engineering journal homepage: www.elsevier.com/locate/aqua-online Short communication Evaluation of the impact of nitrate-nitrogen levels in recirculating aquaculture systems on concentrations of the off-flavor compounds geosmin and 2-methylisoborneol in water and rainbow trout (Oncorhynchus mykiss) Kevin K. Schrader a,∗, John W. Davidson b, Steven T. Summerfelt b a United States Department of Agriculture, Agricultural Research Service, Natural Products Utilization Research Unit, National Center for Natural Products Research, Post Office Box 8048, University, MS 38677-8048, USA b The Conservation Fund Freshwater Institute, 1098 Turner Road, Shepherdstown, WV 25443, USA article info abstract Article history: Aquatic animals raised in recirculating aquaculture systems (RAS) can develop preharvest “off-flavors” Received 19 May 2013 such as “earthy” or “musty” which are caused by the bioaccumulation of the odorous compounds geosmin Accepted 16 July 2013 or 2-methylisoborneol (MIB), respectively, in their flesh. Tainted aquatic products cause large economic losses to producers due to the inability to market them. Certain species of actinomycetes, a group of fila- Keywords: mentous bacteria, have been attributed as the main sources of geosmin and MIB in RAS. Previous studies Actinomycetes have demonstrated that certain nutritional factors can stimulate or inhibit bacterial biomass and geosmin Geosmin production by certain actinomycetes. In the current study, the effects of two nitrate-nitrogen (NO −-N) 2-Methylisoborneol 3 Nitrate levels (20–40 mg/L and 80–100 mg/L) on geosmin and MIB levels in culture water and the flesh of rainbow Off-flavor trout (Oncorhynchus mykiss) raised in RAS were monitored. -
Corporate Branding Along The
Gorge walk – 5 miles Cheddar Gorge, Somerset www.nationaltrust.org.uk/walks At almost 400 feet deep and three miles long, this is England’s largest gorge, and with its weathered crags and pinnacles, one of our most spectacular natural sights. Peregrine falcons are just one It plays host to a varied community of specialised plants and wildlife, many of which of the birds that call the cliffs you’ll get the chance to spot on this exhilarating circular walk. home which, if you’re lucky, you may be able to spot Start: Cheddar Tourist Information Centre – grid ref: ST468543 – OS Landranger map 182 overhead. Buzzards, ravens and jackdaws also nest in the Getting there & local facilities… gorge. By bus: service 668 from Street to Lower Langford stops at Tweentown, Cheddar. © National Trust / David Palmer Service 126 from Weston-Super-Mare to Wells stops at Winscombe and Cheddar By bike: the Strawberry Line (National Cycle Network Route 26) is an 8 mile trail linking Cheddar to Kings Wood, leading to Wavering Down and Crook Peak By train: Weston-Super-Mare 9 miles By road: for Cheddar Cliffs take the A371 to Wells from Weston-Super-Mare The famous Cheddar pink, Pay & Display car parks on both sides of the gorge (not NT). WCs, shops and refreshments and other rare plants like rock (not NT) in town of Cheddar. Contact us on 01934 844518 for more information. stonecrop, grow on the cliff edges. Look out for rock rose and herbs such as thyme, wild Things to look out for… basil and marjoram on the lower slopes, which have a t Cheddar Gorge pleasant scent in hot weather. -
Geosmin-MSDS.Pdf
SAFETY DATA SHEET INTERNATIONAL FLAVORS & FRAGRANCES Product GEOSMIN NEAT Print Date 03.12.2013 Page 1 (9) 1. Identification of the substance/mixture and of the company/undertaking 1.1 Product identifier Trade name : GEOSMIN NEAT 1.2 Relevant identified uses of the substance or mixture and uses advised against Use of the Substance/Mixture : Ingredient used in Flavour and/or Fragrance preparations 1.3 Details of the supplier of the safety data sheet Company : IFF (GREAT BRITAIN) LTD. DUDDERY HILL CB9 8LG HAVERHILL Telephone : +441440715000 Telefax : +441440762199 E-mail address : [email protected] Responsible/issuing person 1.4 Emergency telephone number +44 1440 7 15000 2. Hazards identification 2.1 Classification of the substance or mixture Classification (REGULATION (EC) No 1272/2008) Not a hazardous substance or mixture according to Regulation (EC) No. 1272/2008. Classification (67/548/EEC, 1999/45/EC) In accordance with EC directives or respective national laws, the product does not need to be classified nor labelled. 2.2 Label elements Labelling (REGULATION (EC) No 1272/2008) Not a hazardous substance or mixture according to Regulation (EC) No. 1272/2008. 2.3 Other hazards None reasonably foreseeable. 3. Composition/information on ingredients 3.1 Substances Chemical name of the substance : octahydro-4,8a-dimethyl-4a(2H)-naphthol Version : 2.0 Revision Date : 02.08.2013 Telephone: +441440715000 Telefax: +441440762199 SAFETY DATA SHEET INTERNATIONAL FLAVORS & FRAGRANCES Product GEOSMIN NEAT Print Date 03.12.2013 Page 2 (9) Molecular formula : C12H22O Molecular Weight : 182,30 g/mol CAS-No. : 23333-91-7 EINECS-No. : 245-590-2 Remarks : For the full text of the R-phrases mentioned in this Section, see Section 16.