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Mårtensson, LennartORCID iD iconorcid.org/0000-0003-3940-366X
Publications (10 of 16) Show all publications
Wendin, K. & Mårtensson, L. (2019). Sensory quality of drinking water in relation to chemical and microbiological composition. In: 13th Pangborn Sensory Scinece Symposium: . Paper presented at 13th Pangborn Sensory Scinece Symposium.
Open this publication in new window or tab >>Sensory quality of drinking water in relation to chemical and microbiological composition
2019 (English)In: 13th Pangborn Sensory Scinece Symposium, 2019Conference paper, Poster (with or without abstract) (Refereed)
Abstract [en]

It is well known that tap water tastes different due to where the water is tapped, ie its chemical and microbiological compositions. Taste competitions have been performed in different countries to find out the most preferred tap water. With some few exceptions, no studies have been performed in which the taste of tap water is objectively described by analytical sensory methods. The purpose of this study was to evaluate quality of Swedish drinking water from different dwells with emphasis on sensory, chemical and microbiological analyses.

 

Tap water origin from surface water and from groundwater was collected from the Swedish municipalities Svalöv and Kristianstad. The water samples were collected in 3 points in each municipality: 1. waterworks; 2. near waterworks; 3. far from waterworks. In addition the commercial water Evian was included in the analyses. Analytical sensory analyses (triangle test and quantitative descriptive analysis) were performed along with chemical and microbiological standard analyses according to Swedish drinking water standards.

 

The results from the triangle test showed significant sensory differences between tap water from surface water and groundwater, as well as in surface water samples collected in different points. The descriptive analysis showed large differences in the perception of bitterness, minerals and off flavours. The perceived differences are in line with earlier studies pointing out inorganic ions as responsible for the taste sensations. The chemical analyses showed that the major difference between the two types of tap water was a higher mineral content and higher alkalinity in the groundwater compared to the surface water. The microbiological analyses did not show any measurable concentrations in any of the samples. There is a need for further research of chemical and microbiological effects on the flavour of tap water, with focus on microorganisms and chemical compounds in low concentrations.

Keywords
tap water sensory chemistry microbiology
National Category
Food Science
Identifiers
urn:nbn:se:hkr:diva-19733 (URN)
Conference
13th Pangborn Sensory Scinece Symposium
Available from: 2019-07-30 Created: 2019-07-30 Last updated: 2019-08-19Bibliographically approved
Persson, C. & Mårtensson, L. (2018). Hållbar samhällsutveckling: en utmaning för den högre utbildningen. In: Stefan Larsson (Ed.), Lärarlärdom 2018: Högskolan Kristianstad. Paper presented at Lärarlärardom, 15 augusti, 2018. Kristianstad
Open this publication in new window or tab >>Hållbar samhällsutveckling: en utmaning för den högre utbildningen
2018 (Swedish)In: Lärarlärdom 2018: Högskolan Kristianstad / [ed] Stefan Larsson, Kristianstad, 2018Conference paper, Published paper (Other academic)
Place, publisher, year, edition, pages
Kristianstad: , 2018
Series
Skrifter utgivna vid Högskolan Kristianstad, ISSN 1404-9066
Keywords
Högskolepedagogik, pedagogik, lärande, högre utbildning, studenter, hållbar utveckling, hållbar samhällsutveckling
National Category
Pedagogy
Identifiers
urn:nbn:se:hkr:diva-19268 (URN)
Conference
Lärarlärardom, 15 augusti, 2018
Available from: 2019-05-06 Created: 2019-05-06 Last updated: 2019-05-06
Persson, C., Mårtensson, L., Korostenski, J. & Halling, A. (2017). Mänskliga avtryck för hållbar utveckling: hur kan de synliggöras, beskrivas och förstås i relation till förskolans uppdrag?. Högskolepedagogisk debatt (1), 25-34
Open this publication in new window or tab >>Mänskliga avtryck för hållbar utveckling: hur kan de synliggöras, beskrivas och förstås i relation till förskolans uppdrag?
2017 (Swedish)In: Högskolepedagogisk debatt, ISSN 2000-9216, no 1, p. 25-34Article in journal (Other academic) Published
Place, publisher, year, edition, pages
Kristianstad: , 2017
National Category
Pedagogy
Identifiers
urn:nbn:se:hkr:diva-16797 (URN)
Available from: 2017-05-24 Created: 2017-05-24 Last updated: 2018-04-23Bibliographically approved
Svensson, H., Marquez, M., Svensson, B.-M., Mårtensson, L., Bhatnagar, A. & Hogland, W. (2015). Treatment of wood leachate with high polyphenols content by peat and carbon-containing fly ash filters. Desalination and Water Treatment, 53(8), 2041-2048
Open this publication in new window or tab >>Treatment of wood leachate with high polyphenols content by peat and carbon-containing fly ash filters
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2015 (English)In: Desalination and Water Treatment, ISSN 1944-3994, E-ISSN 1944-3986, Vol. 53, no 8, p. 2041-2048Article in journal (Refereed) Published
Abstract [en]

In the present study, two combinations of filter materials in filter/columns were examined for removal of total organic carbon (TOC) and polyphenols (PP) found in storm water runoff from wood storage areas in a wooden floor industry. One filter/column was packed with peat mixed with carbon-containing fly ash, while another filter/column contained only peat (without ash). The mixture of peat and ash has shown faster and higher removal capacity for TOC and faster removal with the same final removal capacity for PP (in grams of pollutant per kg of sorbent) at the saturation point. The superiority observed for the peat and ash filter is presumably due to the unique characteristics of peat and ash, which enhanced the treatment efficiency when used together in a mixture. Based on the observed results, filters formed by peat and carbon-containing ashes proved to be a potentially low-cost option for the treatment of storm water generated at storage areas of wood materials such as logs, sawdust and wood chips.

Keywords
Fly ash; Peat, Adsorption, Polyphenols, TOC, Industrial storm water, Wood
National Category
Water Treatment
Identifiers
urn:nbn:se:hkr:diva-11372 (URN)10.1080/19443994.2013.860883 (DOI)000349000700003 ()
Available from: 2013-12-06 Created: 2013-12-06 Last updated: 2017-12-06Bibliographically approved
Svensson, B.-M., Mårtensson, L., Punzi, M., Svensson, H. & Yermakovych, I. (2014). Determination of  acute toxicity of different types of waste waters. In: : . Paper presented at Linnaeus ECO-TECH 2014 24-26 November, 2014, KALMAR, SWEDEN. (pp. 185).
Open this publication in new window or tab >>Determination of  acute toxicity of different types of waste waters
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2014 (English)Conference paper, Oral presentation with published abstract (Other academic)
National Category
Water Treatment
Identifiers
urn:nbn:se:hkr:diva-16024 (URN)
Conference
Linnaeus ECO-TECH 2014 24-26 November, 2014, KALMAR, SWEDEN.
Available from: 2016-09-15 Created: 2016-09-15 Last updated: 2016-09-26Bibliographically approved
Bo, M., Mårtensson, L. & Nilsson, A. (2014). FoU-strategi för biogas: ett uppdrag inom ramen för Skånes färdplan för biogas. [Kristianstad]: Region Skåne
Open this publication in new window or tab >>FoU-strategi för biogas: ett uppdrag inom ramen för Skånes färdplan för biogas
2014 (Swedish)Report (Other academic)
Place, publisher, year, edition, pages
[Kristianstad]: Region Skåne, 2014. p. 16
National Category
Other Environmental Biotechnology
Identifiers
urn:nbn:se:hkr:diva-17492 (URN)
Funder
Region Skåne, projekt BO11
Available from: 2017-10-15 Created: 2017-10-15 Last updated: 2017-10-16Bibliographically approved
Yermakovych, I., Mårtensson, L., Svensson, B.-M. & Samoilenko, N. (2014). Investigation of Hard Biodegradable Pharmaceuticals Pollutants Treatment of Hospital Wastewaters. In: Book of abstracts: . Paper presented at Linnaeus ECO-TECH 2014 24-26 November, 2014 KALMAR, SWEDEN (pp. 173).
Open this publication in new window or tab >>Investigation of Hard Biodegradable Pharmaceuticals Pollutants Treatment of Hospital Wastewaters
2014 (English)In: Book of abstracts, 2014, p. 173-Conference paper, Oral presentation with published abstract (Other academic)
Abstract [en]

According to the results of the research performed in the different modern research laboratories the remnants of drugs and their derivatives are found in surface waters in France, USA, UK, Germany, Denmark and Sweden. These substances also can be found in sewage sludge, river and ocean sediments and in the municipal landfills filtrates. Some species have been found even in drinking water and ice, grou nd and ocean waters. Many studies confirmed the data of the annual drug releasing into the environment, which counts several hundred of kilograms. Thus, the investigations of negative impact of pharmaceutical substances and their derivatives on aquatic organisms have been performed  during more  than 20 years and showed an extremely negative presence of any drugs in the waters. Now, they are still  considering  as  emerging organic contaminants in the different type of waters. The main sources of water pollution by pharmaceuticals and their derivatives are wastewater from hospitals, clinics, pharmaceutical industries and domestic sewage as well. However, the main percentage of pharmaceuticals dumped into wastewaters is coming from the hospitals. This is typical for large cities, where is situated a great n um ber of hospitals and health care institutions. In the opinion of one study hospital wastewaters have been found in a 15 times higher potential ecotoxicity than the general urban have. The negative effect of pharmaceuticals influence into environment can be decrease due to application of different kinds of additional wastewater treatment as Advanced Oxidation Processes (AOPs). The main approaches of hospitals wastewater treatment in Ukraine and Sweden by implementation of AOPs method were considered in this study. The main data of this research will be presented. 

Keywords
Hospitals, Swage waters, Pharmaceuticals, Waters, Treatment, Advanced Oxidation Processes
National Category
Water Treatment
Identifiers
urn:nbn:se:hkr:diva-16025 (URN)
Conference
Linnaeus ECO-TECH 2014 24-26 November, 2014 KALMAR, SWEDEN
Available from: 2016-09-15 Created: 2016-09-15 Last updated: 2017-02-15Bibliographically approved
Hallgren, P., Mårtensson, L. & Mathiasson, L. (2012). A new spectrophotometric method for improved indirect measurement of low levels of vitellogenin using malachite green. International Journal of Environmental Analytical Chemistry, 92(7), 894-908
Open this publication in new window or tab >>A new spectrophotometric method for improved indirect measurement of low levels of vitellogenin using malachite green
2012 (English)In: International Journal of Environmental Analytical Chemistry, ISSN 0306-7319, E-ISSN 1029-0397, Vol. 92, no 7, p. 894-908Article in journal (Refereed) Published
Abstract [en]

Vitellogenin (VTG) is a well-known biomarker for endocrine disruption and the measurement of alkali-labile protein bound phosphate (ALP) has been used as an indirect quantification method for VTG in fish, clam and mussel. One limitation of the ALP method has been the insufficient detection limit but with the method presented here this obstacle has been overcome, enabling measurement in fish species with very low background levels and hence a wider usage of ALP measurements in the future. In a previous publication, relying on spectrophotometric measurement with molybdate, we presented an improved protocol for ALP measurement in fish plasma. The sample preparation in that paper has here been combined with an improved spectrophotometric determination using malachite green as colour reagent. The spectrophotometric measurement was optimised with respect to acidity and reagent concentration. The validated method has a detection limit of 0.3?µg? ?ml?1 plasma, which is 10 times lower than previous spectrophotometric methods using molybdate reagent, and an intra-assay variation of 7%. The new method was used for screening of endocrine effects by placing juvenile rainbow trout at three locations along the Vallkärra brook, Lund Sweden, which receives leachate water from a nearby covered landfill. In comparison with reference fish, ALP was significantly higher (66%) at the 99% confidence level in fish placed close to the landfill. ALP was also significantly higher (33%) at the 95% confidence level in fish from the group placed further downstream. Fish placed in a brook branch not receiving leachate were unaffected. The low levels of ALP in reference fish (5.5?±?0.7 SD ?µg/ml plasma) could not have been quantified with such precision with another method for ALP measurement. The indirect quantification of VTG as ALP is a more economic alternative compared to quantification with immunological methods.

Keywords
vitellogenin, alkali-labile phosphate, endocrine disruptors, biomarker, malachite green, Oncorhynchus mykiss
National Category
Chemical Sciences
Identifiers
urn:nbn:se:hkr:diva-9348 (URN)10.1080/03067319.2010.496051 (DOI)000304039300010 ()
Available from: 2012-06-07 Created: 2012-06-07 Last updated: 2017-12-07Bibliographically approved
Svensson, B.-M., Mathiasson, L., Mårtensson, L. & Kängsepp, P. (2011). Evaluation of filter material for treatment of different types of wastewater. Journal of Environmental Protection, 2(7), 888-894
Open this publication in new window or tab >>Evaluation of filter material for treatment of different types of wastewater
2011 (English)In: Journal of Environmental Protection, ISSN 2152-2197, E-ISSN 2152-2219, Vol. 2, no 7, p. 888-894Article in journal (Refereed) Published
Abstract [en]

This paper presents an evaluation of the suitability of a mixed absorbent based on peat and carbon-containing ash for treatment of wastewaters, such as wastewater from professional car washes, landfill leachate and stormwater. This mixture is very attractive, since it is a low-cost material which has a capability to simultaneously remove inorganic as well as organic pollutants. Since any filter material eventually needs to be replaced either due to saturation of pollutants or reduced infiltration capacity, it is important that the residual can be handled at low cost and that the environment will be not impaired. The tested mixture, used in filter beds, showed low leaching values and high simultaneous removal efficiency of metals as Cu, Cd and Pb, non-polar organic compounds such as PCBs. Polar organic compounds as phenols were also efficiently removed by microbial and/or chemical degradation in the studied treatment plants with the filter bed acted as a biofilter. Filter material used for three years in a full-scale plant for leachate treatment and four years in treatment plants for wastewater from car washes, had sufficiently high energy content indicating that energy recovery is a good alternative for handling after its usage. Results show that the presented filter material is excellent for both small scale applications (e.g. treatment systems for car wash wastewater with capacity between 250 - 3000 m3 per year) as well as large-scale applications (e.g. filter systems for landfill leachates with capacity above 30,000 m3 per year).

Keywords
Wastewater Treatment, Industrial Landfill, Car Wash, Batch Test, Leaching Test, Peat, Carbon-Containing Ash
National Category
Water Treatment
Identifiers
urn:nbn:se:hkr:diva-8621 (URN)10.4236/jep.2011.27101 (DOI)
Available from: 2011-10-20 Created: 2011-10-20 Last updated: 2017-12-08Bibliographically approved
Larsson, G., Sahlén, J., Mårtensson, L. & Khanal, S. N. (2010). A case study of municipal solid waste in Nepal compared to the situation in the European Union and Sweden. In: Proceedings Linnaeus ECO-TECH´10, Kalmar,  Sweden, Nov 22-24, 2010: . Paper presented at Linnaeus ECO-TECH´10, Kalmar, Sweden, Nov 22-24, 2010 (pp. 429-438).
Open this publication in new window or tab >>A case study of municipal solid waste in Nepal compared to the situation in the European Union and Sweden
2010 (English)In: Proceedings Linnaeus ECO-TECH´10, Kalmar,  Sweden, Nov 22-24, 2010, 2010, p. 429-438Conference paper, Published paper (Refereed)
Abstract [en]

Nepal, situated in the Himalayan belt has a rapidly growing population together with high

urbanisation rate. These factors are currently causing problems connected to municipal solid

waste (MSW). E.g. leakage of hazardous substances to soil and surrounding aquatic systems,

spread of odour and naturally unfamiliar materials to natural biotopes, all of which generate

environmental damage and health problems. There are certain differences in waste generation

and waste composition between urban areas of Nepal. In order to retrieve a broad picture of

the current waste management situation, three population differentiated municipalities in

different areas of the country were investigated. Studies of the MSW regarding composition

and generation were conducted. Moreover, waste management in Nepal was compared with

the basic waste management in the European Union (EU) and Sweden. Landfill sites (LFS) in

Ghorahi Municipality, Pokhara Sub-metropolitan City and Kathmandu Metropolitan City

were studied. Our studies show differences in waste composition, generation and management

between the three locations. The differences are somewhat interconnected with population

size and tourism. Cities with higher population and more tourism tend to have a higher

generation and more diverse MSW. Nevertheless, the urban areas of Nepal are very much in

need of a more structured waste management system, a system more alike the waste

management of EU. Apart from structural problems, there are attitude and behavioural issues

that needs to be dealt with. Further studies regarding social patterns, attitude and behaviour,

as well as the economic flow of MSW, needs to be conducted in order to retrieve an even

broader picture and understand important underlying issues.

Keywords
Solid waste, waste generation, waste composition
National Category
Other Engineering and Technologies not elsewhere specified
Identifiers
urn:nbn:se:hkr:diva-16026 (URN)
Conference
Linnaeus ECO-TECH´10, Kalmar, Sweden, Nov 22-24, 2010
Available from: 2016-09-15 Created: 2016-09-15 Last updated: 2016-09-26
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0003-3940-366X

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