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Add the result to your basketPerchloroetylene and Dibutyltin Dichloride Removal from Packed Column by Surfactant Solution / Seelawut Damrongsiri in Applied environmental research, Vol.36 No.3 (May-Aug) 2014 ([10/10/2014])
Title : Perchloroetylene and Dibutyltin Dichloride Removal from Packed Column by Surfactant Solution Material Type: printed text Authors: Seelawut Damrongsiri, Author ; Chantra Tongcumpou, Author ; Sabatini, David A., Author Publication Date: 2014 Article on page: p.1-15 Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.1-15Keywords: Surfactant.Solubilization.Organometallic compound. Abstract: Surfactant enhanced remediation is viewed as a potential method for removing organometallic compounds from contaminated aquifers. Dibutyltin dichloride (DBT), as a representative organometallic compound, was applied in sand packed columns to observe its solubilization behavior compared to that of perchloroetylene (PCE), a normal organic solvent. Ottawa sand was used as the porous media. A mixture of DBT and PCE was applied as the contaminant. The tracer study exhibited the plug flow condition with a retention time of 79.9 min. The surfactant solution was a mixture of 3.6 wt.% SDHS and 0.4 wt.% C16DPDS with various concentrations of CaCl2.The column experiments were carried out by single and gradient surfactant systems. The effluent exhibited a general solubilization pattern for PCE, governed by a rate limiting mechanism. However, the concentration of DBT in the effluent observed in every experiment was just a slice of its solubilization capacity. The adsorption of DBT on the sand was suspected to be the cause of the problem. The solubilization of DBT by a surfactant was ineffective at removing DBT from the contaminated media. It may be concluded that DBT exhibits the properties of both an organic and inorganic compound; it could be solubilized by a surfactant and absorbed strongly on sand. Nevertheless, the results indicate that trapped DBT could be removed by mobilization in the form of a PCE-DBT mixture and that adsorption could be prevented by a very low pH condition. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24029 [article] Perchloroetylene and Dibutyltin Dichloride Removal from Packed Column by Surfactant Solution [printed text] / Seelawut Damrongsiri, Author ; Chantra Tongcumpou, Author ; Sabatini, David A., Author . - 2014 . - p.1-15.
Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.1-15Keywords: Surfactant.Solubilization.Organometallic compound. Abstract: Surfactant enhanced remediation is viewed as a potential method for removing organometallic compounds from contaminated aquifers. Dibutyltin dichloride (DBT), as a representative organometallic compound, was applied in sand packed columns to observe its solubilization behavior compared to that of perchloroetylene (PCE), a normal organic solvent. Ottawa sand was used as the porous media. A mixture of DBT and PCE was applied as the contaminant. The tracer study exhibited the plug flow condition with a retention time of 79.9 min. The surfactant solution was a mixture of 3.6 wt.% SDHS and 0.4 wt.% C16DPDS with various concentrations of CaCl2.The column experiments were carried out by single and gradient surfactant systems. The effluent exhibited a general solubilization pattern for PCE, governed by a rate limiting mechanism. However, the concentration of DBT in the effluent observed in every experiment was just a slice of its solubilization capacity. The adsorption of DBT on the sand was suspected to be the cause of the problem. The solubilization of DBT by a surfactant was ineffective at removing DBT from the contaminated media. It may be concluded that DBT exhibits the properties of both an organic and inorganic compound; it could be solubilized by a surfactant and absorbed strongly on sand. Nevertheless, the results indicate that trapped DBT could be removed by mobilization in the form of a PCE-DBT mixture and that adsorption could be prevented by a very low pH condition. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24029
Title : Comparing Throughfall and Litterfall Nutrient Fluxes in a Rubber (Hevea brasiliensis Willd. Muell-Arg) Plantation Agro-ecosystem at Ikenne, South-west Nigeria Material Type: printed text Authors: Adedeji, O, H., Author ; Gbadegesin, Adeniyi S., Author Publication Date: 2014 Article on page: p.17-28 Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.17-28Keywords: Agro-ecosystem.Canopy interception.Nutrient cycling. Abstract: This study compares nutrient fluxes (throughfall and litterfall) in a rubber (Hevea brasiliensis Willd. Muell-Arg) plantation agro-ecosystem at Ikenne, SW Nigeria. Throughfall samples were collected bi-weekly under the rubber canopies (40-, 15-, and 5-year-old) using throughfall funnel collectors with 10 replicates. Litterfall was collected on a monthly basis in the three rubber stands using twenty-four 0.25 m2 litter traps (eight replicates in each of the three rubber stands) positioned randomly to estimate total annual litter production (dry biomass) and its main fractions. Throughfall and litterfall samples were analyzed for total nitrogen, sodium, phosphorus, calcium, potassium and magnesium. The annual means of throughfall in the different stands were compared by solution type using one-way analysis of variance (ANOVA), followed by a post-hoc separation of means by the Scheffe-test (p <0.05). The litterfall data were analyzed using one-way analysis of variance based on the representative of 12 months. The results revealed a clear pattern of increased levels of base cations and fluxes of throughfall compared to those occurring in precipitation. Fluxes of Ca2+ in throughfall are typically 1.5-2 times greater than those occurring in rainfall. Among the rubber stands, fluxes of K+ are also greater in throughfall, consistent with previous studies. The enrichment of elements in throughfall has been ascribed to the dissolution and washout of atmospheric materials deposited on the canopy. Comparison of total annual litterfall nutrient budgets show that the 15-year-old rubber stand was cycling more Mg2+, N, Na+, K+ , P, and Ca2+ in litterfall than the 40- and 5-year-old rubber stands. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24030 [article] Comparing Throughfall and Litterfall Nutrient Fluxes in a Rubber (Hevea brasiliensis Willd. Muell-Arg) Plantation Agro-ecosystem at Ikenne, South-west Nigeria [printed text] / Adedeji, O, H., Author ; Gbadegesin, Adeniyi S., Author . - 2014 . - p.17-28.
Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.17-28Keywords: Agro-ecosystem.Canopy interception.Nutrient cycling. Abstract: This study compares nutrient fluxes (throughfall and litterfall) in a rubber (Hevea brasiliensis Willd. Muell-Arg) plantation agro-ecosystem at Ikenne, SW Nigeria. Throughfall samples were collected bi-weekly under the rubber canopies (40-, 15-, and 5-year-old) using throughfall funnel collectors with 10 replicates. Litterfall was collected on a monthly basis in the three rubber stands using twenty-four 0.25 m2 litter traps (eight replicates in each of the three rubber stands) positioned randomly to estimate total annual litter production (dry biomass) and its main fractions. Throughfall and litterfall samples were analyzed for total nitrogen, sodium, phosphorus, calcium, potassium and magnesium. The annual means of throughfall in the different stands were compared by solution type using one-way analysis of variance (ANOVA), followed by a post-hoc separation of means by the Scheffe-test (p <0.05). The litterfall data were analyzed using one-way analysis of variance based on the representative of 12 months. The results revealed a clear pattern of increased levels of base cations and fluxes of throughfall compared to those occurring in precipitation. Fluxes of Ca2+ in throughfall are typically 1.5-2 times greater than those occurring in rainfall. Among the rubber stands, fluxes of K+ are also greater in throughfall, consistent with previous studies. The enrichment of elements in throughfall has been ascribed to the dissolution and washout of atmospheric materials deposited on the canopy. Comparison of total annual litterfall nutrient budgets show that the 15-year-old rubber stand was cycling more Mg2+, N, Na+, K+ , P, and Ca2+ in litterfall than the 40- and 5-year-old rubber stands. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24030
Title : Production of Charcoal Briquettes from Palmyra Palm Waste in Kirimat District, Sukhothai Province, Thailand Material Type: printed text Authors: Chanphen Chumsang, Author ; Pitak Upan, Author Publication Date: 2014 Article on page: p.29-38 Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.29-38Keywords: Palmyra palm.Fruit calyx.Shells.Charcoal briquette production. Abstract: Palmyra palm is a significant economic crop in Kirimat District, Sukhothai Province, and generates large quantities of husks, stalks and shells as by-products and wastes, which impacts on the local environment. This study investigated (1) production of compressed charcoal briquettes from Palmyra palm husks, fruit calyx and shells, whose physical properties and thermal performance were tested and analyzed according to Thai Community Product Standard (tcps 238/2004); (2) the economic return of the production process. The results showed that 40% of shells of a mature palm fruit and 90% of the husk and fruit calyx of young palm fruit are left over. Moreover, the thermal properties of the palm husks, fruit calyx and shells were found to be similar to those of coconut shells and oil palms. In an experiment to test the properties of blends of the two products (husks and fruit calyx: shells) in 6 different mixing ratios using starch paste as binding agent, all 6 mixing ratios showed thermal values ranging from 5,281.60–6,702.00 kcal/kg, which exceeded the Thai Community Product Standard (tcps). During combustion, these briquettes produced low levels of crackling, odour and smoke emissions, and drop shatter. These characteristics make the studied briquettes appropriate for storage and transport. At a production cost of 4.83 baht/kg for a production capacity of 400kg/day, the payback period was 1.3 years. Therefore, the palm briquettes would make an alternative source of additional income and an alternative fuel substitute for wood charcoal and LPG. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24031 [article] Production of Charcoal Briquettes from Palmyra Palm Waste in Kirimat District, Sukhothai Province, Thailand [printed text] / Chanphen Chumsang, Author ; Pitak Upan, Author . - 2014 . - p.29-38.
Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.29-38Keywords: Palmyra palm.Fruit calyx.Shells.Charcoal briquette production. Abstract: Palmyra palm is a significant economic crop in Kirimat District, Sukhothai Province, and generates large quantities of husks, stalks and shells as by-products and wastes, which impacts on the local environment. This study investigated (1) production of compressed charcoal briquettes from Palmyra palm husks, fruit calyx and shells, whose physical properties and thermal performance were tested and analyzed according to Thai Community Product Standard (tcps 238/2004); (2) the economic return of the production process. The results showed that 40% of shells of a mature palm fruit and 90% of the husk and fruit calyx of young palm fruit are left over. Moreover, the thermal properties of the palm husks, fruit calyx and shells were found to be similar to those of coconut shells and oil palms. In an experiment to test the properties of blends of the two products (husks and fruit calyx: shells) in 6 different mixing ratios using starch paste as binding agent, all 6 mixing ratios showed thermal values ranging from 5,281.60–6,702.00 kcal/kg, which exceeded the Thai Community Product Standard (tcps). During combustion, these briquettes produced low levels of crackling, odour and smoke emissions, and drop shatter. These characteristics make the studied briquettes appropriate for storage and transport. At a production cost of 4.83 baht/kg for a production capacity of 400kg/day, the payback period was 1.3 years. Therefore, the palm briquettes would make an alternative source of additional income and an alternative fuel substitute for wood charcoal and LPG. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24031
Title : The Challenge of Promoting Greater Use of Economic Instruments in Thailand: Lessons Learned from the Draft Act on Economic Instruments for Environmental Management Material Type: printed text Authors: Sujitra Vassanadumrongdee, Author ; Panate Monamaivbool, Author Publication Date: 2014 Article on page: p.39-51 Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.39-51Abstract: Current policies and plans geared toward green growth/green economy emphasize the greater use of economic instruments. This paper reviews the past and current application of economic instruments (EIs) in environmental management in Thailand. Insights gained from documentary research indicate that EIs such as product taxes through collection of excise taxes have been relatively effective, whilst user charges for solid waste and waste water treatment have been found to be unsuccessful in Thailand. Lessons learned from the draft Act on Economic Instruments for Environmental Management indicate several institutional constraints towards the extensive application of EIs. This paper provides some suggestions to overcome these challenges including institutional reforms, an appropriate mix of policy instruments, and proactive roles of academia in raising environmental awareness and knowledge of the relevant authorities and the general public which could increase political support for environmental policies and the use of EIs in particular.
Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24032 [article] The Challenge of Promoting Greater Use of Economic Instruments in Thailand: Lessons Learned from the Draft Act on Economic Instruments for Environmental Management [printed text] / Sujitra Vassanadumrongdee, Author ; Panate Monamaivbool, Author . - 2014 . - p.39-51.
Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.39-51Abstract: Current policies and plans geared toward green growth/green economy emphasize the greater use of economic instruments. This paper reviews the past and current application of economic instruments (EIs) in environmental management in Thailand. Insights gained from documentary research indicate that EIs such as product taxes through collection of excise taxes have been relatively effective, whilst user charges for solid waste and waste water treatment have been found to be unsuccessful in Thailand. Lessons learned from the draft Act on Economic Instruments for Environmental Management indicate several institutional constraints towards the extensive application of EIs. This paper provides some suggestions to overcome these challenges including institutional reforms, an appropriate mix of policy instruments, and proactive roles of academia in raising environmental awareness and knowledge of the relevant authorities and the general public which could increase political support for environmental policies and the use of EIs in particular.
Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24032
Title : Development of GIS Database for Insecticide Usage and Toxicity among Thai Farmers in Ubon Ratchathani Province, Thailand Material Type: printed text Authors: Anun Chaikoolvatana, Author ; Wacharapong Saengnill, Author ; Jaruwan Wongbutdee, Author ; Nawaporn Saisingh, Author Publication Date: 2014 Article on page: p.53-63 Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.53-63Abstract: Widespread use of pesticides in Thai agriculture has led to serious adverse health impacts on users. This study developed a GIS database using the QGIS tool to investigate insecticide usage and toxicity to farmers in Ubon Ratchathani Province in northeastern Thailand. Primary data collection involved recording exact locations of residential houses using geographic positioning system (GPS). Secondary data including transport routes, natural and environmental resources, and records of rainfall and ground temperatures were also collected. The data were integrated as GIS mapping data. Eighteen farmers participated in the study and submitted themselves to measurements of cholinesterase (ChE) levels and 2 blood sample collections for comparison with standard ChE levels. Results revealed the GIS database to be an effective tool to capture, store, manage, search, analyze, and represent spatial data and correlate them with insecticide usage. The GIS database revealed that ChE levels of volunteers for pre-post-exposure were within normal ranges. Liver enzymes (AST and ALT) were also within normal ranges. Further study should broaden collection of essential data including demographic information and basic knowledge and perceptions of self-protection regarding insecticides. Further evaluation and refining of the GIS database approach are recommended to improve its effectiveness as an analytical tool to enhance safe use of pesticides. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24033 [article] Development of GIS Database for Insecticide Usage and Toxicity among Thai Farmers in Ubon Ratchathani Province, Thailand [printed text] / Anun Chaikoolvatana, Author ; Wacharapong Saengnill, Author ; Jaruwan Wongbutdee, Author ; Nawaporn Saisingh, Author . - 2014 . - p.53-63.
Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.53-63Abstract: Widespread use of pesticides in Thai agriculture has led to serious adverse health impacts on users. This study developed a GIS database using the QGIS tool to investigate insecticide usage and toxicity to farmers in Ubon Ratchathani Province in northeastern Thailand. Primary data collection involved recording exact locations of residential houses using geographic positioning system (GPS). Secondary data including transport routes, natural and environmental resources, and records of rainfall and ground temperatures were also collected. The data were integrated as GIS mapping data. Eighteen farmers participated in the study and submitted themselves to measurements of cholinesterase (ChE) levels and 2 blood sample collections for comparison with standard ChE levels. Results revealed the GIS database to be an effective tool to capture, store, manage, search, analyze, and represent spatial data and correlate them with insecticide usage. The GIS database revealed that ChE levels of volunteers for pre-post-exposure were within normal ranges. Liver enzymes (AST and ALT) were also within normal ranges. Further study should broaden collection of essential data including demographic information and basic knowledge and perceptions of self-protection regarding insecticides. Further evaluation and refining of the GIS database approach are recommended to improve its effectiveness as an analytical tool to enhance safe use of pesticides. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24033
Title : Determination Towards Decision of Public Response in Flood Situation: Case Study in Urban Flood Prone Area in Central Region in Thailand Material Type: printed text Authors: I-soon Raungratanamaporn, Author Publication Date: 2014 Article on page: p.77-94 Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.77-94Keywords: Public involement.Risk accepability.Risk management Flood. Abstract: Public involvement has become a crucial part in increasing the efficiency of disaster management activities nowadays. In particular, collaboration between civil society and municipalities emerge in disaster situations because uncertainties in personal perception compel them to do so more than their own willingness to involved in disaster management activity. Since this appears to have occurred as a response to the 2011 flood situation in Thailand, the question is how a successful was this collaboration? The aim of this research is to identify factors influencing people’s involvement in disaster management activity. The two study objectives are as follows: (1) to elucidate the characteristics of flood responses in the selected case study, and (2) to measure the level of involvement of community members in flood-prone urban areas during the flood situation in 2011. This study area is located in Pak Kret Municipality, Nonthaburi Province, which is considered as one area that was successful in its flood management efforts during the 2011 flood situation. This research utilized a questionnaire survey, which adopts and extends concepts relevant to willingness to pay for and take part in disaster management activities. Five factors were applied to the investigation: (1) Respondents’ information; (2) Decision of respondents to take action, classified by flood inundation level; (3) Perception towards stakeholders in flood management activities; (4) Factors influencing respondents to become involved in flood management activity; and (5) Current preparation and response effort. The study found that external groups such as central and local government, community leaders and members have to take responsibility as first-tier respondents in disaster situations. In the case of collaboration, community members are willing to help government sector as volunteers, and the three most influential factors which led community members to become involved in disaster management activity are level of severity, duration of disaster, and expectation to avoid escalation of the situation. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24034 [article] Determination Towards Decision of Public Response in Flood Situation: Case Study in Urban Flood Prone Area in Central Region in Thailand [printed text] / I-soon Raungratanamaporn, Author . - 2014 . - p.77-94.
Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.77-94Keywords: Public involement.Risk accepability.Risk management Flood. Abstract: Public involvement has become a crucial part in increasing the efficiency of disaster management activities nowadays. In particular, collaboration between civil society and municipalities emerge in disaster situations because uncertainties in personal perception compel them to do so more than their own willingness to involved in disaster management activity. Since this appears to have occurred as a response to the 2011 flood situation in Thailand, the question is how a successful was this collaboration? The aim of this research is to identify factors influencing people’s involvement in disaster management activity. The two study objectives are as follows: (1) to elucidate the characteristics of flood responses in the selected case study, and (2) to measure the level of involvement of community members in flood-prone urban areas during the flood situation in 2011. This study area is located in Pak Kret Municipality, Nonthaburi Province, which is considered as one area that was successful in its flood management efforts during the 2011 flood situation. This research utilized a questionnaire survey, which adopts and extends concepts relevant to willingness to pay for and take part in disaster management activities. Five factors were applied to the investigation: (1) Respondents’ information; (2) Decision of respondents to take action, classified by flood inundation level; (3) Perception towards stakeholders in flood management activities; (4) Factors influencing respondents to become involved in flood management activity; and (5) Current preparation and response effort. The study found that external groups such as central and local government, community leaders and members have to take responsibility as first-tier respondents in disaster situations. In the case of collaboration, community members are willing to help government sector as volunteers, and the three most influential factors which led community members to become involved in disaster management activity are level of severity, duration of disaster, and expectation to avoid escalation of the situation. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24034
Title : Effect of EDTA and DTPA on Cadmium Removal from Contaminated Soil with Water Hyacinth Material Type: printed text Authors: Aekkacha Tananonchai, Author ; Pantawat Sampanpanish, Author Publication Date: 2014 Article on page: p.65-76 Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.65-76Keywords: EDTA.DTPA.Cadmium removal capacity.Phytorenedaition. Abstract: The effects of ethylenediaminetetraacetic acid (EDTA) and diethylene triaminepentaacetic acid (DTPA) on cadmium (Cd) uptake by water hyacinth (Eichhornia crassipes) in Cd-contaminated soil was studied. Experimental samples were separated into 4 treatment groups: 1) Untreated control, 2) EDTA addition, 3) DTPA addition, and 4) mixture of EDTA and DTPA (1:1) addition. The plants were harvested at 20, 40, 60, 80 and 100 days. Cd levels were measured in soil samples, water samples and two parts of the plant: shoot (stem and leaves) and root. The results showed that Cd accumulation in plants with added EDTA and DTPA were higher than the control set, indicating that EDTA and DTPA addition increased Cd uptake by water hyacinth. Cd accumulations in the root in all groups were significantly (p<0.05) higher than that in the shoot. In EDTA added sets, Cd accumulation in the root was higher than in shoots and were measured at 160.91 and 13.37 mg/kg at 100 days, respectively. This research indicates that DTPA was most suitable for increasing the cadmium removal capacity of water hyacinth and offers a suitable phytoremediation technique to help clean contaminated sites. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24035 [article] Effect of EDTA and DTPA on Cadmium Removal from Contaminated Soil with Water Hyacinth [printed text] / Aekkacha Tananonchai, Author ; Pantawat Sampanpanish, Author . - 2014 . - p.65-76.
Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.65-76Keywords: EDTA.DTPA.Cadmium removal capacity.Phytorenedaition. Abstract: The effects of ethylenediaminetetraacetic acid (EDTA) and diethylene triaminepentaacetic acid (DTPA) on cadmium (Cd) uptake by water hyacinth (Eichhornia crassipes) in Cd-contaminated soil was studied. Experimental samples were separated into 4 treatment groups: 1) Untreated control, 2) EDTA addition, 3) DTPA addition, and 4) mixture of EDTA and DTPA (1:1) addition. The plants were harvested at 20, 40, 60, 80 and 100 days. Cd levels were measured in soil samples, water samples and two parts of the plant: shoot (stem and leaves) and root. The results showed that Cd accumulation in plants with added EDTA and DTPA were higher than the control set, indicating that EDTA and DTPA addition increased Cd uptake by water hyacinth. Cd accumulations in the root in all groups were significantly (p<0.05) higher than that in the shoot. In EDTA added sets, Cd accumulation in the root was higher than in shoots and were measured at 160.91 and 13.37 mg/kg at 100 days, respectively. This research indicates that DTPA was most suitable for increasing the cadmium removal capacity of water hyacinth and offers a suitable phytoremediation technique to help clean contaminated sites. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24035
Title : Effects of Organic Fertilizer on Cd Bioavailability and Cd Accumulation in Rice Grown in Contaminated Paddy Soil Material Type: printed text Authors: Mongkolchai Assawadithalerd, Author ; Meechai Siangliw, Author ; Chantra Tongcumpou, Author Publication Date: 2014 Article on page: p.95-104 Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.95-104Keywords: Cadmium.Organic fertilizer. BCR Bioavailability. Accumulation index. Abstract: The effects of organic fertilizer on Cd phytoavailability and distribution in rice plants (Oryza sativa L.) were examined in pot and field experiments. The results of the pot experiment show that the addition of organic fertilizer increased the oxidizable Cd fraction (F3) and decreased the soluble and exchangeable Cd fraction (F1). There was also an increase in the dry matter yield when more organic fertilizer was applied. The Cd concentrations in the rice plant parts were observed in the following order: root > stem > grain. The accumulation index from the field experiment indicates that organic fertilizer application is likely to reduce the uptake of both Cd and Zn by rice. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24036 [article] Effects of Organic Fertilizer on Cd Bioavailability and Cd Accumulation in Rice Grown in Contaminated Paddy Soil [printed text] / Mongkolchai Assawadithalerd, Author ; Meechai Siangliw, Author ; Chantra Tongcumpou, Author . - 2014 . - p.95-104.
Languages : English (eng)
in Applied environmental research > Vol.36 No.3 (May-Aug) 2014 [10/10/2014] . - p.95-104Keywords: Cadmium.Organic fertilizer. BCR Bioavailability. Accumulation index. Abstract: The effects of organic fertilizer on Cd phytoavailability and distribution in rice plants (Oryza sativa L.) were examined in pot and field experiments. The results of the pot experiment show that the addition of organic fertilizer increased the oxidizable Cd fraction (F3) and decreased the soluble and exchangeable Cd fraction (F1). There was also an increase in the dry matter yield when more organic fertilizer was applied. The Cd concentrations in the rice plant parts were observed in the following order: root > stem > grain. The accumulation index from the field experiment indicates that organic fertilizer application is likely to reduce the uptake of both Cd and Zn by rice. Link for e-copy: https://www.tci-thaijo.org/index.php/aer/issue/view/2245 Record link: http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=24036
