International Journal of Environment and Sustainable Development最新文献_第5页

The Shelf Life of Tomato Fruits (Solanum lycopersicum L.) Treated with Extracts of Two Medicinal Plants: Azadirachta indica and Vernonia amygdalina 番茄果实的保质期两种药用植物:印楝和苦杏仁的提取物

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International Journal of Environment and Sustainable Development Pub Date : 2022-10-07 DOI: 10.3126/ije.v11i2.48653

J. C. Okolo, J. C. Igborgbor, E. Eze, G. Ogu, G. Jonah

{"title":"The Shelf Life of Tomato Fruits (Solanum lycopersicum L.) Treated with Extracts of Two Medicinal Plants: Azadirachta indica and Vernonia amygdalina","authors":"J. C. Okolo, J. C. Igborgbor, E. Eze, G. Ogu, G. Jonah","doi":"10.3126/ije.v11i2.48653","DOIUrl":"https://doi.org/10.3126/ije.v11i2.48653","url":null,"abstract":"Tomato remains one of the most nutritive edible berries but challenged by incessant attack and spoilage by fungi among others. The negative effects of synthetic preservatives have shifted attention to bio-preservatives. This study investigated the shelf-life of post-harvest tomato fruits treated with the two medicinal plants: Azadirachta indica (neem leaf) and Vernonia amygdalina (bitter leaf) extracts. Fresh tomato fruits and leaves of both plants were sourced from Lokoja. The leaves were air-dried, pulverized and extracted with distilled water and absolute ethanol. The extracts were analyzed phytochemically and graded concentrations (2.5 g/mL - 10.0 g/mL) were applied to the tomato samples in five replications each. Weight loss, appearance of fungal mycelia and deteriorations on the tomato samples were monitored for 30 days. Fungal isolates from the deteriorated samples were recovered and subjected to in vitro inhibitory activities. Alkaloids, glycosides, saponins, flavonoids and tannins were present in both extracts, except for A. indica, where saponins was not detected. Both extracts significantly (p<0.05) reduce the weight loss (63.4 %) and extended the shelf life of the tomato fruits to 24 days at 10.0 g/mL. Aspergillus niger, Fusarium oxysporum, Rhizopus stolonifer and Alternaria alternata were recovered from the spoilt tomatoes. The most and least susceptible isolates were R. stolonifera (84.56 %) and A. niger (71.45 %), respectively. The bioactivities of both extracts were not significantly different (p>0.05) from each other. These findings suggest that relatively higher concentrations of both plant extracts could be potential bio-preservatives to extend the shelf life of post-harvest tomatoes.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72574102","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

Ecology of Persian Walnut (Juglans regia L.) in Western Bhutan 不丹西部波斯核桃(Juglans regia L.)生态学

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International Journal of Environment and Sustainable Development Pub Date : 2022-10-07 DOI: 10.3126/ije.v11i2.43844

L. Sagar, Jambay, Ngawang Gyeltshen, Bhakta Bdr. Ghalley, Sonam Yonten, Namkha Gyeltshen, Rupesh Subedi, R. Dorji

{"title":"Ecology of Persian Walnut (Juglans regia L.) in Western Bhutan","authors":"L. Sagar, Jambay, Ngawang Gyeltshen, Bhakta Bdr. Ghalley, Sonam Yonten, Namkha Gyeltshen, Rupesh Subedi, R. Dorji","doi":"10.3126/ije.v11i2.43844","DOIUrl":"https://doi.org/10.3126/ije.v11i2.43844","url":null,"abstract":"In Bhutan the Persian Walnut (Juglans regia L.) is highly valued for its timber and is listed under special class in Royalty on Forest Products of Bhutan. Possessing high timber and other medicinal values, the ecology of the species in the country was poorly understood. The study aimed to understand the ecological requirements and habitat modeling of the species in Bhutan. A purposive non-probability sampling was adopted in natural habitats of the species in four districts (Gasa, Punakha, Wangdue Phodrang, and Dagana) of the country. Plot size of 20 m X 20 m (major plot) for tree and understory and 2 m X 2 m for ground cover were used to collect vegetation data. Soil samples were collected from the center of the major plot at a depth of 25 - 30 cm. A total of 163 plant species belonging to 74 families were recorded from the study plots. Pearson and Kendal correlation of CCA Ordination showed moderate influence of slope (r = .66) followed by altitude (r =.55). Annual mean temperature and rainfall showed moderately negative correlation with the growth and distribution of J. regia (r =. -54 and -.64) in the study area. Despite, scattered distribution of J. regia in the country an area of 7146.53 km2 which accounts for 18.61% of the country’s total area was found to be suitable for the growth and development of the species which can be used for protection and management of species in future.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80713322","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

Assessment of freshwater plant diversity and local difference in freshwater plant use knowledge in Punakha district, Bhutan 不丹Punakha地区淡水植物多样性评估和淡水植物利用知识的地方差异

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International Journal of Environment and Sustainable Development Pub Date : 2022-10-07 DOI: 10.3126/ije.v11i2.47619

T. Dema, Tshering Pem, Jambay, S. Tshomo, S. Tshering

{"title":"Assessment of freshwater plant diversity and local difference in freshwater plant use knowledge in Punakha district, Bhutan","authors":"T. Dema, Tshering Pem, Jambay, S. Tshomo, S. Tshering","doi":"10.3126/ije.v11i2.47619","DOIUrl":"https://doi.org/10.3126/ije.v11i2.47619","url":null,"abstract":"Freshwater plants play a paramount role in an aquatic ecosystem. However, only limited studies have been carried out on freshwater plants. Therefore, the study aimed to assess the diversity of freshwater plants in different freshwater bodies of Punakha District, the correlation of freshwater plant species with the environmental variables, and the local community difference in freshwater plant use knowledge in Punakha district. A total of 20 water bodies were selected using a stratified sampling method. Area-based surveys were employed to assess the plant species from a total of 80 plots, each with the quadrat of 5 m x 5 m. Environmental variables such as altitude, water depth, water velocity, temperature, precipitation and evapotranspiration were measured. The study recorded a total of 72 freshwater plant species distributed among 57 genera and 37 families. Shannon-Weiner diversity index revealed high diversity of freshwater plants from ponds (H’ = 3.3) followed by ditches (H’ = 3.16), streams (H’ = 3.07) and lakes (H’ = 2.83). The study revealed the decrease of freshwater plant species with an increase in the water velocity, depth and altitude. There was a significant association between respondents’ freshwater plant use knowledge with gender (x2 (1) = 6.04, p = .014), age (x2 (1) = 13.21, p = .000) and education level (x2 (1) = 4.53, p = .003). Females and illiterate respondents with aged 31 years old and above had more knowledge on freshwater plant use compared to males and educated respondents with aged 30 years old and below.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72593979","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

Perception of local people and visitors towards ecotourism development in Jagadishpur reservoir 当地居民和游客对Jagadishpur水库生态旅游发展的看法

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International Journal of Environment and Sustainable Development Pub Date : 2022-10-07 DOI: 10.3126/ije.v11i2.44768

Bishal Aryal, V. Chhetri, Pramisha Khanal

{"title":"Perception of local people and visitors towards ecotourism development in Jagadishpur reservoir","authors":"Bishal Aryal, V. Chhetri, Pramisha Khanal","doi":"10.3126/ije.v11i2.44768","DOIUrl":"https://doi.org/10.3126/ije.v11i2.44768","url":null,"abstract":"Ecotourism promotes stewardship of natural and cultural resources. However, local people and tourists' opinions are necessary to promote ecotourism development. This study attempts to identify prospective ecotourism products and assess local and visitor perceptions towards ecotourism development in the Jagadishpur reservoir. We conducted semi-structured interviews with 50 local households, 65 visitors, and 7 key informants. We used Friedman's rank test to determine the preferences for ecotourism products, and Fisher's exact test to quantify locals and visitors' perceptions of ecotourism. The findings showed that lakes/scenic beauty, and bird watching are the highest rated ecotourism products by locals and visitors, respectively. Local people and visitors perceived picnic spots and view towers as additional ecotourism products for ecotourism development, respectively. The perceptions of locals and visitors showed no significant difference that the area is suitable for ecotourism, biodiversity conservation, and livelihood promotion of locals. However, a significant difference was found in the perception between locals and visitors of the culture and tradition. The study showed that local people and visitors both are positive for ecotourism development in terms of suitability, livelihood, and biodiversity conservation. Detailed understanding and prioritized ecotourism products can contribute to ecotourism promotion more effectively. Furthermore, more research on the feasibility of identified ecotourism products and the effectiveness of fund allocation for ecotourism products are urgently needed to develop wetland tourism in a sustainable way.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78325071","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

Occurrence of Elevated Nitrogenous and Phosphorus in Groundwater Sources Used in Unplanned Settlements, Dar Es Salaam - Tanzania 坦桑尼亚达累斯萨拉姆，在未规划的定居点使用的地下水中氮和磷含量升高

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International Journal of Environment and Sustainable Development Pub Date : 2022-10-07 DOI: 10.3126/ije.v11i2.46304

Leopord Sibomana Leonard, Rubhera Ram Mato, M. Kaseva

{"title":"Occurrence of Elevated Nitrogenous and Phosphorus in Groundwater Sources Used in Unplanned Settlements, Dar Es Salaam - Tanzania","authors":"Leopord Sibomana Leonard, Rubhera Ram Mato, M. Kaseva","doi":"10.3126/ije.v11i2.46304","DOIUrl":"https://doi.org/10.3126/ije.v11i2.46304","url":null,"abstract":"Groundwater in unplanned settlements is stressed by multiple pollution sources threatening health of consumers. Elevated nitrogen and phosphorus affect the quality of groundwater as they leach through the soil to groundwater. This study aimed at establishing variations of nitrogenous and phosphorus compounds in 75 boreholes used in 8 unplanned settlements in Dar es Salaam, Tanzania. Laboratory analysis using Spectrophotometer DR/4000 was conducted at Ardhi University. Principal Component Analysis was conducted by using Paleontological Statistics (PAST) software, version 3.08 and statistical significance set at p < 0.05. Results indicated that about 84% and 73.3% of sampled boreholes during wet and dry seasons, respectively had nitrate nitrogen greater than WHO recommendations for drinking water quality standards. Concentration of NO2-N showed that 12% and 14.7% of sampled boreholes during wet and dry seasons, respectively were greater than 0.9 mg/L TZS (574:2016) recommended guidelines. Phosphate concentration was greater than 2.2 mg/L TZS (574:2016) recommended guidelines in 49.3% and 12% of sampled boreholes during both wet and dry seasons, respectively. These results indicated that consuming such polluted water may be unsafe to infants and older people and therefore alternative drinking water source is recommended.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76711551","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

Estimation of surface PM2.5 with MODIS Aerosol optical depth and source identification using trajectory analysis: A case of Hyderabad City, India 基于轨迹分析的MODIS气溶胶光学深度估算和地表PM2.5源识别——以印度海得拉巴市为例

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International Journal of Environment and Sustainable Development Pub Date : 2022-10-07 DOI: 10.3126/ije.v11i2.44538

Selvetikar Ashok, M. Sekhar, D. R. B. Reddy

{"title":"Estimation of surface PM2.5 with MODIS Aerosol optical depth and source identification using trajectory analysis: A case of Hyderabad City, India","authors":"Selvetikar Ashok, M. Sekhar, D. R. B. Reddy","doi":"10.3126/ije.v11i2.44538","DOIUrl":"https://doi.org/10.3126/ije.v11i2.44538","url":null,"abstract":"Satellite measurements are important for quantifying the ground observations and atmosphere columnar properties like Aerosol Optical Depth (AOD) especially in developing countries like India. In this study Moderate Resolution Imaging Spectroradiometer (MODIS) retrieval’s AOD product has been used having 3 km and 10 km spatial resolution from terra and aqua satellites, The MODIS AOD data and meteorological parameters from May 2017 to May 2019 were used. The Multiple linear regression method is implemented in this study. The study concluded that there is a good agreement in the prediction of PM2.5 at Zoopark location, whereas in other monitoring locations the agreement between AOD and measured PM2.5 is relatively poor. The particulate matter (PM) concentrations are influenced by the local source regions and the long-range transport of pollutant through the wind, whereas the source regions identified based on the Potential Source Contribution Function (PSCF), Concentration-Weighted Trajectory (CWT) and Cluster analysis indicate the dominant source regions. Results indicate that the Central India and East Indian regions are more dominating source regions at Hyderabad location in the winter season. It was found that the lower altitude layer showed the major source of local regions nearby receptor. The cluster analysis indicates that the high intensity from the East Indian regions. This paper not only demonstrates reasonable prediction accuracy but also provides the model uncertainties which lays foundation for further study.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85520529","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

Evaluation of the status of water quality of three swimming pools in Bujumbura city, Burundi 布隆迪布琼布拉市三个游泳池水质状况评价

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International Journal of Environment and Sustainable Development Pub Date : 2022-10-07 DOI: 10.3126/ije.v11i2.44652

Christophe Niyungeko, Jonas Ntirampeba, P. Bararunyeretse, Benjamin Makimilua Tiimub, M. Nihorimbere, Pierre Ntakiyiruta

{"title":"Evaluation of the status of water quality of three swimming pools in Bujumbura city, Burundi","authors":"Christophe Niyungeko, Jonas Ntirampeba, P. Bararunyeretse, Benjamin Makimilua Tiimub, M. Nihorimbere, Pierre Ntakiyiruta","doi":"10.3126/ije.v11i2.44652","DOIUrl":"https://doi.org/10.3126/ije.v11i2.44652","url":null,"abstract":"Poor water quality is problematic for the health of public swimmers. This study focused on the water quality of three main swimming pools coded as MS, ES and HC in the city of Bujumbura, Burundi. Water samples were collected from June to the end of August 2020 and analyzed for physicochemical parameters such as pH, turbidity, conductivity, nitrates, free chlorine and microbiological parameters (total coliforms and faecal coliforms). Our results indicated that 2/3 of the sampling days showed pH >7.8 and pH<7.2 in the MS and HC pools, respectively. All these pools exhibited high turbidity whereas ES manifested very high value (6.05NTU). Free chlorine appeared very low in the MS pool with contamination by total coliforms (<1MPN 1mL-1 and 1.17x107MPN 1mL-1, <1MPN 1mL-1 and 6.32x106MPN 1mL-1, and < 1MPN 1mL-1 and 5x102 MPN 1mL-1) for MS, ES, and HC respectively. Both MS and ES pools revealed higher thermotolerant coliforms contamination of (<1MPN 1mL-1 and 2.18x104MPN 1mL-1) in MS and (<1MPN 1mL-1 and 2.32x104MPN 1mL-1) in ES, but the HC pool showed a single contamination case with values of <1UFC 1mL-1 and 5UFC1mL-1 throughout the sampling period. Additionally, extreme concentrations of nitrates (104.89 mgL-1) were observed at the ES pool. The findings showed a non-compliance with WHO standards for all three swimming pools and therefore advocates for an urgent need to monitor and treat or change the water frequently for quality assurance of swimming pools.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78894169","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

Adoption of Sustainability in Clothing and Textile Production Among Developing Countries 发展中国家在服装和纺织品生产中采用可持续性

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International Journal of Environment and Sustainable Development Pub Date : 2022-06-27 DOI: 10.55921/iijv6461

I. Diyaolu

{"title":"Adoption of Sustainability in Clothing and Textile Production Among Developing Countries","authors":"I. Diyaolu","doi":"10.55921/iijv6461","DOIUrl":"https://doi.org/10.55921/iijv6461","url":null,"abstract":"Purpose –– This study examines the vital role manufacturing industries can play in the realization of Sustainable Development Goals (SDG) by adopting sustainability that encompasses economic viability, environmental protection, and social equity. Among such industries is the clothing and textile industry, which supplies one of the basic human needs. The textile industry has a strong potential to increase Gross Domestic Product (GDP) and promote foreign direct investment (FDI).\u0000\u0000Methods –– The study employed a review approach for its methodology. Secondary data from textile firms, books, and journals were used as sources of information.\u0000\u0000Findings –– The study revealed that there was a poor track record for social and environmental concerns in textile production among developing countries. The cost of acquiring technology and the threat to indigenous firms were inhibiting factors. The use of obsolete technologies, lack of sustainability principles and policies, and little effort in technology transfer were other factors.\u0000\u0000Conclusion/Recommendation –– The study recommends that developing countries should adopt a sustainability policy in textile manufacturing by employing technology transfer from developed countries through exchanges and collaborations.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84747785","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

Nutrient dynamics under unmanaged rubber, cocoa, and oil palm plantations in a sandy soil under humid lowland tropical climatic conditions 湿润低地热带气候条件下沙质土壤中无管理橡胶、可可和油棕种植园的营养动态

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International Journal of Environment and Sustainable Development Pub Date : 2022-06-20 DOI: 10.3126/ije.v11i1.45839

Joel Koni, P. S. Michael

{"title":"Nutrient dynamics under unmanaged rubber, cocoa, and oil palm plantations in a sandy soil under humid lowland tropical climatic conditions","authors":"Joel Koni, P. S. Michael","doi":"10.3126/ije.v11i1.45839","DOIUrl":"https://doi.org/10.3126/ije.v11i1.45839","url":null,"abstract":"Changes in land use are an important issue in many farms that affect soil biological, chemical, and physical properties temporarily under cropping cycles or when the land is permanently allocated to perennial tree crops, e.g., in agroforestry. This study investigated the changes in sandy soil chemistry induced by three perennial tree crops (rubber, cocoa, and oil palm) growing in 30-year-old unmanaged and abandoned plantations and the surrounding grasslands dominated by cogon grass. A disruptive approach was used to collect soil samples from the top 60 cm under all the tree crops and in the grassland soils. A 500-gram sample of each soil originating from under each tree crop and the grassland were carefully packed into pre-labeled paper bags in triplicate (n=3) and sent to the laboratory for analysis of a selected number of primary and secondary macronutrients, micronutrients, and other soil parameters. The results showed N, K, Mg, Cu, Zn, and S were generally deficient in the sandy soil. A tree crop-specific soil organic matter, organic carbon, carbon stock contents, and water holding capacity measured were high under rubber and cocoa only. The variation in pH, electrical conductivity, bulk density, total porosity, and particle composition were generally similar except that the sand composition was lower in the soils under rubber and oil palm.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73738191","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

Performance of rooftop rainwater harvesting system as a source of drinking water 屋顶雨水收集系统作为饮用水源的性能

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International Journal of Environment and Sustainable Development Pub Date : 2022-06-20 DOI: 10.3126/ije.v11i1.45841

Mamata Aryal, Prayon Joshi, S. Thakuri

{"title":"Performance of rooftop rainwater harvesting system as a source of drinking water","authors":"Mamata Aryal, Prayon Joshi, S. Thakuri","doi":"10.3126/ije.v11i1.45841","DOIUrl":"https://doi.org/10.3126/ije.v11i1.45841","url":null,"abstract":"Rainwater Harvesting Systems (RWHSs) are increasingly being used as an alternative or supplementary source of water to curb the water supply deficit in the Kathmandu valley. The harvested rainwater is primarily used for non-potable purposes like flushing toilets and irrigation, but the knowledge on the use of rainwater for potable purpose is remarkably sparse. This study assesses the suitability of rainwater in terms of quantity and quality in a public school that adopts Rooftop RWHS as the source of drinking water. In this study, we observed that the volume of rainwater being harvested is sufficient to address the current demand of drinking water, with a mean rainfall of 1664 mm on a catchment area of 372 m2. Storage capacity needs to be expanded if the demand increases. Physico-chemical and microbial analyses of water samples (before and after a series of treatments) were carried out for the winter, monsoon, and post-monsoon seasons. The values of physico-chemical parameters of the water samples, in all the seasons, were well within both the National Drinking Water Quality Standards (NDWQS, 2005) and the World Health Organisation (WHO, 2017) guidelines for drinking water, while fecal coliforms were detected in the storage tank, but were absent in tap water after the treatments. Based on the findings, we suggest that the harvested rainwater could be used for drinking purposes if properly treated. RWHS use at the institutional level, like in schools, on the one hand, curbs the increasing demand for water in water-deficit locations like Kathmandu, and on the other, encourages the adoption of such sustainable technologies for the water supply.","PeriodicalId":14042,"journal":{"name":"International Journal of Environment and Sustainable Development","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85397429","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