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Assessment of Public Health Affected by Municipal Piped Water Supply in Old Dhaka, Bangladesh
Tanvir Hossain,
Md. Tajuddin Sikder,
Md. Jakariya
Issue:
Volume 3, Issue 2-1, March 2015
Pages:
1-5
Received:
29 November 2014
Accepted:
19 January 2015
Published:
5 February 2015
DOI:
10.11648/j.ijepp.s.2015030201.11
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Abstract: This study was performed to assess the local public health impacts caused from the consumption of the municipal water supply in the study area. A field survey was conducted in Bangladesh National Hospital to get a statistical overview of the water borne health hazards’ incidence rates among the dwellers of Sutrapur Thana. The study found that about 40% of all the patients in the hospital got admitted due to different types of water borne diseases. The most common water borne diseases observed were: diarrhea (about 40.7%), typhoid (about 32.3%), dysentery (about 6.6%) and hepatitis A (about 10.5%). Children were found to be the most vulnerable to these diseases. About 70% of the total water borne disease incidences was children. On the other hand, the incidence rate was highest (58.9%) in the wet season (June), whereas it was lowest (17.9%) in the dry season (January). However, when respondents from local community were asked to give their perception on the safety of the supplied water, 100% claimed that the water was unsafe for drinking purpose.
Abstract: This study was performed to assess the local public health impacts caused from the consumption of the municipal water supply in the study area. A field survey was conducted in Bangladesh National Hospital to get a statistical overview of the water borne health hazards’ incidence rates among the dwellers of Sutrapur Thana. The study found that about...
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Photodegradation of Textile Effluent Using Solar Radiation
Sharmin Yousuf Rikta,
Mahbub Alam,
Kaniz Fatima Binte Hossain,
Shafi Mohammad Tareq
Issue:
Volume 3, Issue 2-1, March 2015
Pages:
14-18
Received:
30 January 2015
Accepted:
30 January 2015
Published:
11 February 2015
DOI:
10.11648/j.ijepp.s.2015030201.13
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Abstract: Recent study was carried out to examine the efficacy of solar radiation in improving the quality of textile effluent in term of physicochemical properties and to degrade the dissolved organic matter (DOM) in textile effluent. The experiment was performed in natural light with dark control and both the changes in physicochemical parameters and the DOM in textile effluent were examined. Physicochemical properties of textile effluent changed gradually after photodegradation in different time intervals and the effluent quality improved. Not all the parameters were in standard limit but the pollution load decreased substantially. After twenty days of photodegradation, fluorescent intensity of DOM in textile effluent decreased from 5.5 RU to 0.16 RU which indicated photo-oxidation of low molecular weight DOM, whereas dark control showed no significant change in DOM fluorescent intensity.
Abstract: Recent study was carried out to examine the efficacy of solar radiation in improving the quality of textile effluent in term of physicochemical properties and to degrade the dissolved organic matter (DOM) in textile effluent. The experiment was performed in natural light with dark control and both the changes in physicochemical parameters and the D...
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Removal of Turbidity from the River Water using Tamarindusindica and Litchi chinensis Seeds as Natural Coagulant
M. Mostafizur Rahman,
Protima Sarker,
Badhan Saha,
Nusrat Jakarin,
Mashura Shammi,
M. Khabir Uddin,
Md. Tajuddin Sikder
Issue:
Volume 3, Issue 2-1, March 2015
Pages:
19-26
Received:
16 December 2014
Accepted:
5 February 2015
Published:
14 February 2015
DOI:
10.11648/j.ijepp.s.2015030201.14
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Abstract: The present study was conducted to assess the efficacy of powder extracted from mature-dried Tamarindus indica and Litchi chinensis seeds for the turbidity reduction of polluted river water. Efficiency of Tamarindus indica and Litchi chinensis in removal of turbidity was compared with a synthetic coagulant Polyaluminiumchloride(PAC). The jar test experiment was performed to treat sample water using seed extracts along with PAC in laboratory condition. Polyacrylamide (PAM) was used as a model coagulant to aid the coagulation process. Water samples were analyzed before and after treatment with target coagulants. Tamarindus indica achieved maximum 91.16% turbidity reduction aided with0.5% PAM. Likewise, Litchi chinensis showed 91.82% turbidity reduction aided with 0.2% PAM, whereas PAC showed maximum 96.20% turbidity reduction aided with 0.5% PAM. The overall results revealed that both of the seed extract has impressive coagulation capacity in compare to the PAC. After treatment with natural seed extracts there was no significant changes in the other water quality parameters; pH, TDS, EC and COD. It can be stated that the present study will be a pathway to examine the kinetics of coagulation and mechanism of reactions by using natural seed extracts as coagulant.
Abstract: The present study was conducted to assess the efficacy of powder extracted from mature-dried Tamarindus indica and Litchi chinensis seeds for the turbidity reduction of polluted river water. Efficiency of Tamarindus indica and Litchi chinensis in removal of turbidity was compared with a synthetic coagulant Polyaluminiumchloride(PAC). The jar test e...
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Feasibility Study of Vermicomposting of Textile Sludge Mixed with Cow Dung and Seed Germination Bioassay for Toxicity Evaluation of the Produced Compost
Nusrat Jakarin Easha,
Md. Shiblur Rahaman,
Taslima Zaman,
Md. Khabir Uddin
Issue:
Volume 3, Issue 2-1, March 2015
Pages:
27-34
Received:
30 December 2014
Accepted:
23 January 2015
Published:
27 February 2015
DOI:
10.11648/j.ijepp.s.2015030201.15
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Abstract: Transformation of textile sludges into vermicomposts can convert these wastes into good quality manure. The present study investigate the feasibility of vermicomposting process to transform the textile sludge amended with cow dung in different ratio into value added products by using an epigeic earthworm Eisenia foetida. Seed germination bioassay also investigated using mustard seeds (Brassica nigra) in order to evaluate the toxicity and maturity tests of those different mixtures and their produced composts. The result revealed that the E. foetida did not survive in fresh textile sludge. But worms grew and reproduced in textile sludge spiked with cow dung feed mixtures. Presence of more than 20% of textile sludge in feed mixture affected biomass gain and cocoon production largely by earthworms. The net weight gained by E. foetida in 100% cow dung was three fold higher than the feed mixture of 50% cow dung + 50% textile sludge. After 13 weeks, maximum cocoons (56 cocoons) were counted in 100% cow dung and minimum (6 cocoons) in 50% cow dung + 50% textile sludge feed mixture. Vermicomposting resulted in pH shift toward slightly acidic, significant reduction in TOC and C:N ratio, and increase in nitrogen phosphorus and sulphur content. Total potassium content, calcium content and heavy metal’s (Cu, Cr, Pb, Zn, Fe, Mn) content were lower in the final product than initial feed material. The results of phytotoxicity test showed that all the vermicompost products had the higher seed germination percentage, root elongation percentage and germination index than their respective initial feed mixtures. The feed mixtures having the textile sludge had various phytotoxic compounds which might inhibit seed germination before vermicomposting. But the vermicomposts of different feed mixtures having the presence of 100% cow dung and 10% - 20% textile sludge were matured compost and had no phytotoxic effects as they had the germination index higher than 60. All the results indicated that vermicomposting (using E. foetida) is a suitable technology for the decomposition of textile sludge into value added materials. This textile sludge could be converted into good quality manure by vermicomposting if mixed in appropriate ratio (up to 20% on dry weight basis) with cow dung.
Abstract: Transformation of textile sludges into vermicomposts can convert these wastes into good quality manure. The present study investigate the feasibility of vermicomposting process to transform the textile sludge amended with cow dung in different ratio into value added products by using an epigeic earthworm Eisenia foetida. Seed germination bioassay a...
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Climate Change and Food Security at Salinity Prone Area in Southwest Coastal Region of Bangladesh
Nur Alam Mistri,
Masudur Rahaman,
Taslima Khatun
Issue:
Volume 3, Issue 2-1, March 2015
Pages:
35-39
Received:
5 January 2015
Accepted:
28 January 2015
Published:
28 February 2015
DOI:
10.11648/j.ijepp.s.2015030201.16
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Abstract: The availability, accessibility, utility and stability of food production and consumption interrupted due to the climatic transformation and intensity of salinity in the southwest salinity prone area of Bangladesh. 96.7% of the respondents can perceive climate change explicitly, among the 120 respondents of whom the mean age of the respondents was 50.6 years. 40.8% of the respondents responded that crops became more limited from 20 to 25 years ago. 43.3% of the respondents argued that salinity was responsible for the degradation of soil fertility. The problems of drinking water prevails that 29.79% of the respondents spent 61 taka to 80 taka monthly for water. 96.22% of the respondents availed microcredit facilities from NGO and 22.0% of the respondents used microcredit for purchasing food products. 64.2% of the respondents don’t consume nutritional foods and the day to day consumption highly depends on purchasing which was domestically produced few years ago.
Abstract: The availability, accessibility, utility and stability of food production and consumption interrupted due to the climatic transformation and intensity of salinity in the southwest salinity prone area of Bangladesh. 96.7% of the respondents can perceive climate change explicitly, among the 120 respondents of whom the mean age of the respondents was ...
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Environmental Migration from Coastal Area to Urban Centers: A Case Study of Mohammadpur Slums, Dhaka, Bangladesh
Jussi Dayna Biswas,
K. Maudood Elahi,
Bani Mahmud
Issue:
Volume 3, Issue 2-1, March 2015
Pages:
40-44
Received:
19 January 2015
Accepted:
8 March 2015
Published:
14 March 2015
DOI:
10.11648/j.ijepp.s.2015030201.17
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Abstract: Migration due to climate change induced disasters has become one of the major challenges for Bangladesh. But the data related to environmental migrants are insufficient specially the aftermath of migration to a new area. This study was designed to assess the people’s perceptions on coastal environmental hazards and the status of migrants after migration. The study was conducted on 100 households living in four slums of Mohammadpur area in Dhaka city with the help of questionnaire survey. 78% of the total respondents believe that coastal zone is more vulnerable than 10 years ago. 31.11% respondents thought frequent cyclone and 28.51% thought climate change as the major factors making the coastal zone more vulnerable over last 10 years. Excessive house rent (14.38%), inadequate supply of gas and electricity (14.22%) and water scarcity (13.08%) are the main problems of the slum people to where they have migrated. 33.64% respondents thought that governmental and non-governmental bodies should take initiatives to mitigate their problems.100% of the respondents chose Dhaka for the employment facility. Most of the respondents were from western coastal zone of Bangladesh. 61% of the respondents migrated during 2001-2010 showing a close relationship between increasing disaster and increase in the number of environmental migrants.
Abstract: Migration due to climate change induced disasters has become one of the major challenges for Bangladesh. But the data related to environmental migrants are insufficient specially the aftermath of migration to a new area. This study was designed to assess the people’s perceptions on coastal environmental hazards and the status of migrants after migr...
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