Plastic waste is a well-known hazard to the ecosystem due to which many countries are exploring ways to mitigate this polymer from the environment. Various plastic wastes are generated after end use in the form of plastic bottles, plastic bags, bottle caps, straw, plastic cups, etc. These are generally made up of HDPE, LPDE, PP, PET, PS, etc. Therefore, this study focusses to utilise this wastage to make some value-added products. In this context, waste plastic bottles and containers made up of polypropylene and high-density polyethylene were targeted and shredded into small pieces ranging from 1.4 to 2 mm and mixed with additives in the extruder and hydraulic press to make circular sheets that can be used for electrical purposes. During the study, the effect of various process parameters on fabricated circular sheet properties such as tensile strength, melt flow index (MFI), and thermal conductivity were investigated. The developed non-linear theoretical models were found to be in good agreement with the experimental data. The gradient descent method is applied in BBD for estimating the optimum condition for fabricating a circular sheet. Under optimum conditions, the tensile strength and thermal conductivity were found to be 1535 MPa and 0.0312 W/mK, respectively, for the HDPE circular sheet using extrusion. The tensile strength, MFI, and thermal conductivity were determined using a Universal testing machine, melt flow tester (ASTM D1238), and Thermal constant analyser based on ASTM D1350.
{"title":"Experimental Study and Process Optimisation for Fabrication of Circular Sheet Made from Waste PP/HDPE via Extrusion and Hydraulic Press","authors":"Ritu Chaudhary, Sushant Upadhyaya, Vikas Kumar Sangal","doi":"10.3233/ajw230065","DOIUrl":"https://doi.org/10.3233/ajw230065","url":null,"abstract":"Plastic waste is a well-known hazard to the ecosystem due to which many countries are exploring ways to mitigate this polymer from the environment. Various plastic wastes are generated after end use in the form of plastic bottles, plastic bags, bottle caps, straw, plastic cups, etc. These are generally made up of HDPE, LPDE, PP, PET, PS, etc. Therefore, this study focusses to utilise this wastage to make some value-added products. In this context, waste plastic bottles and containers made up of polypropylene and high-density polyethylene were targeted and shredded into small pieces ranging from 1.4 to 2 mm and mixed with additives in the extruder and hydraulic press to make circular sheets that can be used for electrical purposes. During the study, the effect of various process parameters on fabricated circular sheet properties such as tensile strength, melt flow index (MFI), and thermal conductivity were investigated. The developed non-linear theoretical models were found to be in good agreement with the experimental data. The gradient descent method is applied in BBD for estimating the optimum condition for fabricating a circular sheet. Under optimum conditions, the tensile strength and thermal conductivity were found to be 1535 MPa and 0.0312 W/mK, respectively, for the HDPE circular sheet using extrusion. The tensile strength, MFI, and thermal conductivity were determined using a Universal testing machine, melt flow tester (ASTM D1238), and Thermal constant analyser based on ASTM D1350.","PeriodicalId":8553,"journal":{"name":"Asian Journal of Water, Environment and Pollution","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135141262","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}
Azizul Hakim, Ferdouse Zaman Tanu, Sabrina Sharmeen Alam
Microplastics (MP; <5 mm) and nanoplastics (NP; <1000 nm) are now ubiquitous in nature as they have been released into inland water, lakes, rivers, and marine water through direct discharge, runoff from upland watersheds, and other terrestrial environments. To understand the aggregation of MP and NP in the last decade, surveys and analytical efforts were undertaken. The MP and NP particles in the soil and water environments interact with other natural and engineered nanoparticles, which in turn form aggregates. These plastic particles could form homoaggregates and/or heteroaggregates depending on pH, ionic type, ionic valence, salt concentration, shape and size of the plastic particles, and the polymer type of MP. Differences in MP aggregation due to differences in plastic polymer type are not yet well documented. This review is conducted to investigate the effect of polymer type on the aggregation of MP and NP particles in the presence of various aggregation conditions.
{"title":"Interaction, Adhesion and Aggregation of Microplastic/Nanoplastic Particles: Effects of Plastic Polymer Type","authors":"Azizul Hakim, Ferdouse Zaman Tanu, Sabrina Sharmeen Alam","doi":"10.3233/ajw230061","DOIUrl":"https://doi.org/10.3233/ajw230061","url":null,"abstract":"Microplastics (MP; <5 mm) and nanoplastics (NP; <1000 nm) are now ubiquitous in nature as they have been released into inland water, lakes, rivers, and marine water through direct discharge, runoff from upland watersheds, and other terrestrial environments. To understand the aggregation of MP and NP in the last decade, surveys and analytical efforts were undertaken. The MP and NP particles in the soil and water environments interact with other natural and engineered nanoparticles, which in turn form aggregates. These plastic particles could form homoaggregates and/or heteroaggregates depending on pH, ionic type, ionic valence, salt concentration, shape and size of the plastic particles, and the polymer type of MP. Differences in MP aggregation due to differences in plastic polymer type are not yet well documented. This review is conducted to investigate the effect of polymer type on the aggregation of MP and NP particles in the presence of various aggregation conditions.","PeriodicalId":8553,"journal":{"name":"Asian Journal of Water, Environment and Pollution","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135146619","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}
The Seybouse Estuary (SE) is the downstream of the second great river in Algeria draining one of the main country’s watersheds (6471 km2, 1.5 million inhabitants). This study highlights the effect of the estuarine part on the distribution and the flux of dissolved nitrogen (N), phosphorus (P) and silicon (Si) through the SE. Surface water sampling was taken and analysed in the dry (September 2016) and wet (April 2017) seasons. Physical parameters and water discharge data were jointly recorded in parallel to sampling dates. Very low flows varying between 0.3 and 4.7 m3 s-1 were recorded at the outlet in dry and wet seasons, respectively. The SE outlet waters were 2.6 and 10 folds higher than upstream in dissolved inorganic nitrogen (DIN) and phosphates (PO4) levels, respectively. However, the silicates (SiO4) levels decreased by about 1/2 in the outlet waters. In terms of flux, the SE delivered to the coast 84 t·yr-1, 9 t·yr-1 and 56 t·yr-1 of DIN, PO4 and SiO4, respectively. The high DIN:PO4 = 137 and low SiO4:DIN = 0.52 molar ratios classify SE as one of the strong anthropised estuaries. The estuarine part amply modifies cycles and budgets of riverine nutrients introduced to the coast.
{"title":"The Transmission Effectiveness of the Dissolved Nutrients (N, P, Si) Through a South Mediterranean Estuary (Seybouse, Algeria) Under Large Anthropogenic Forcing","authors":"Omar Ramzi Ziouch, Tarek Daifallah, Houda Chenaker, Zoubir Moujari, Naouel Dali, Rabeh Zebsa","doi":"10.3233/ajw230059","DOIUrl":"https://doi.org/10.3233/ajw230059","url":null,"abstract":"The Seybouse Estuary (SE) is the downstream of the second great river in Algeria draining one of the main country’s watersheds (6471 km2, 1.5 million inhabitants). This study highlights the effect of the estuarine part on the distribution and the flux of dissolved nitrogen (N), phosphorus (P) and silicon (Si) through the SE. Surface water sampling was taken and analysed in the dry (September 2016) and wet (April 2017) seasons. Physical parameters and water discharge data were jointly recorded in parallel to sampling dates. Very low flows varying between 0.3 and 4.7 m3 s-1 were recorded at the outlet in dry and wet seasons, respectively. The SE outlet waters were 2.6 and 10 folds higher than upstream in dissolved inorganic nitrogen (DIN) and phosphates (PO4) levels, respectively. However, the silicates (SiO4) levels decreased by about 1/2 in the outlet waters. In terms of flux, the SE delivered to the coast 84 t·yr-1, 9 t·yr-1 and 56 t·yr-1 of DIN, PO4 and SiO4, respectively. The high DIN:PO4 = 137 and low SiO4:DIN = 0.52 molar ratios classify SE as one of the strong anthropised estuaries. The estuarine part amply modifies cycles and budgets of riverine nutrients introduced to the coast.","PeriodicalId":8553,"journal":{"name":"Asian Journal of Water, Environment and Pollution","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135141250","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}
The present study was conducted with an aim to investigate the seasonal variation in mass concentration of fine particulate matter (PM1), their chemical composition, (water and soluble and non-soluble ions and other elements) and gaseous pollutants (SO2, NO2, CO and O3) at an urban site of Jaipur city in India. During summers, pollutants showed a reduction of 18.97%, 41.95%, 32.32% and 20.56% for PM1, NO2, SO2 and CO, respectively. In contrast, O3 showed an increase of 27%. The substantial reduction was also observed in the levels of secondary aerosols SO4 2- (71.15%), NO3-(21.86%), Cl- (65.63%) and K+ (8.16%). The elemental components Al, B, Be, Ca, Cu, Fe, Mn, Ni, and Pb showed a reduction in the range of 15.13 % (Al) to 71% (Cu). On the contrary, an increment was found in the levels of Ag (21.95%), Cd (62.5%), Cr (89.74%), Mg (10.43%) and Na (25.32%). Four factors were extracted by principal component analysis (PCA). In addition to the local sources, three stationary sources have been identified as contributing to the pollution load located in the WNW, NE and ENE direction of the site. It can be concluded that pollutant concentration and chemical composition of any area not only depend on the local emission, but nearby stationary sources and meteorology are significant contributors.
{"title":"Seasonal Variations in Chemical Composition and Source Apportionment of Fine Particulate Matter (PM1) in an Urban Site of Jaipur City, Rajasthan","authors":"Shivani Sharma, Charu Jhamaria, Suresh Tiwari, Namrata Singh, Harsha Parwani, Nidhi Rajoria, Tanisha Ameriya, Akanksha Gupta","doi":"10.3233/ajw230064","DOIUrl":"https://doi.org/10.3233/ajw230064","url":null,"abstract":"The present study was conducted with an aim to investigate the seasonal variation in mass concentration of fine particulate matter (PM1), their chemical composition, (water and soluble and non-soluble ions and other elements) and gaseous pollutants (SO2, NO2, CO and O3) at an urban site of Jaipur city in India. During summers, pollutants showed a reduction of 18.97%, 41.95%, 32.32% and 20.56% for PM1, NO2, SO2 and CO, respectively. In contrast, O3 showed an increase of 27%. The substantial reduction was also observed in the levels of secondary aerosols SO4 2- (71.15%), NO3-(21.86%), Cl- (65.63%) and K+ (8.16%). The elemental components Al, B, Be, Ca, Cu, Fe, Mn, Ni, and Pb showed a reduction in the range of 15.13 % (Al) to 71% (Cu). On the contrary, an increment was found in the levels of Ag (21.95%), Cd (62.5%), Cr (89.74%), Mg (10.43%) and Na (25.32%). Four factors were extracted by principal component analysis (PCA). In addition to the local sources, three stationary sources have been identified as contributing to the pollution load located in the WNW, NE and ENE direction of the site. It can be concluded that pollutant concentration and chemical composition of any area not only depend on the local emission, but nearby stationary sources and meteorology are significant contributors.","PeriodicalId":8553,"journal":{"name":"Asian Journal of Water, Environment and Pollution","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135141255","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}
{"title":"Editorial","authors":"V. Subramanian","doi":"10.3233/ajw230044","DOIUrl":"https://doi.org/10.3233/ajw230044","url":null,"abstract":"","PeriodicalId":8553,"journal":{"name":"Asian Journal of Water, Environment and Pollution","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44379996","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}
T. Kongeswaran, K. Sivakumar, A. Muruganantham, K. Prabakaran, V. Perumal, V. Agastheeswaran, S. Bangaru Priyanga, R. Muthuramalingam
The purpose of this study is to evaluate the quality of groundwater for drinking and irrigation in the Avudaiyarkoil block of the Pudukottai district, which is a drought-prone region. Samples were collected from 20 wells on January 2021 and analysed for the water quality parameters, such as pH, EC, TDS, Ca2+, Mg2+, Na+, K+, Cl-, HCO3, SO4, NO3 and F-. The analysis revealed that SO4 is the dominant ion followed by Cl-, HCO3-, Na+, Ca2+, Mg2+, K+, NO3- and F- with respect to the mean value 292>234>208.4>125>100>24.75>18>16.15>0.2. The analytical results were compared with WHO and BIS guideline values to know the groundwater potability and TH, TA, SAR, Na%, RSC, PI, MgC and KI were calculated using the analytical results to identify the suitability of groundwater for irrigation purposes.
{"title":"Hydrogeochemical Evaluation of Groundwater for Drinking and Irrigation Purposes in Avudaiyarkoil Block, Pudukkottai District, Tamil Nadu, India","authors":"T. Kongeswaran, K. Sivakumar, A. Muruganantham, K. Prabakaran, V. Perumal, V. Agastheeswaran, S. Bangaru Priyanga, R. Muthuramalingam","doi":"10.3233/ajw230053","DOIUrl":"https://doi.org/10.3233/ajw230053","url":null,"abstract":"The purpose of this study is to evaluate the quality of groundwater for drinking and irrigation in the Avudaiyarkoil block of the Pudukottai district, which is a drought-prone region. Samples were collected from 20 wells on January 2021 and analysed for the water quality parameters, such as pH, EC, TDS, Ca2+, Mg2+, Na+, K+, Cl-, HCO3, SO4, NO3 and F-. The analysis revealed that SO4 is the dominant ion followed by Cl-, HCO3-, Na+, Ca2+, Mg2+, K+, NO3- and F- with respect to the mean value 292>234>208.4>125>100>24.75>18>16.15>0.2. The analytical results were compared with WHO and BIS guideline values to know the groundwater potability and TH, TA, SAR, Na%, RSC, PI, MgC and KI were calculated using the analytical results to identify the suitability of groundwater for irrigation purposes.","PeriodicalId":8553,"journal":{"name":"Asian Journal of Water, Environment and Pollution","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46052467","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}
Lead pollution in the air is dangerous for living because toxic and carcinogenic. Dracaena marginata var. tricolor, Gratophyllum pictum, and Pedilanthus tithymaloides are plants that are often found on the roadside of Sidoarjo city and are often exposed to lead. This research aims to determine the ability of D. marginata var. tricolor, G. pictum, and P. tithymaloides as lead absorbents in the air and the relationship between lead content with plant chlorophyll content. This research is observational. Leaf sampling was carried out at 3 points in 3 locations, namely Buduran Street, Pahlawan Street, and Cemengkalang Street Sidoarjo. The lead content parameter was measured using Atomic Absorption Spectrophotometry and chlorophyll content was measured using Spectrophotometer. Data analysis using ANOVA test followed by Duncan test and quantitative descriptive. The result showed that D. marginata var. tricolor, G. pictum, and P. tithymaloides have the ability as lead absorbents in the air. The highest to the lowest lead content were G. pictum 0.225±0.005 mg/L, D. marginata var. tricolor 0.087±0.006 mg/L, and P. tithymaloides 0.033±0.022 mg/L. The highest to the lowest chlorophyll content were G. pictum 13.707±5.028 mg/L, D. marginata var. tricolor 11.851±4.659 mg/L, and P. tithymaloides 11.391±4.256 mg/L. There was no significant effect of lead content on plant chlorophyll content.
{"title":"The Ability of Dracaena marginata var. tricolor, Gratophyllum pictum, and Pedilanthus tithymaloides as Lead Absorbents in the Air","authors":"K. Sahani, F. Rachmadiarti","doi":"10.3233/ajw230045","DOIUrl":"https://doi.org/10.3233/ajw230045","url":null,"abstract":"Lead pollution in the air is dangerous for living because toxic and carcinogenic. Dracaena marginata var. tricolor, Gratophyllum pictum, and Pedilanthus tithymaloides are plants that are often found on the roadside of Sidoarjo city and are often exposed to lead. This research aims to determine the ability of D. marginata var. tricolor, G. pictum, and P. tithymaloides as lead absorbents in the air and the relationship between lead content with plant chlorophyll content. This research is observational. Leaf sampling was carried out at 3 points in 3 locations, namely Buduran Street, Pahlawan Street, and Cemengkalang Street Sidoarjo. The lead content parameter was measured using Atomic Absorption Spectrophotometry and chlorophyll content was measured using Spectrophotometer. Data analysis using ANOVA test followed by Duncan test and quantitative descriptive. The result showed that D. marginata var. tricolor, G. pictum, and P. tithymaloides have the ability as lead absorbents in the air. The highest to the lowest lead content were G. pictum 0.225±0.005 mg/L, D. marginata var. tricolor 0.087±0.006 mg/L, and P. tithymaloides 0.033±0.022 mg/L. The highest to the lowest chlorophyll content were G. pictum 13.707±5.028 mg/L, D. marginata var. tricolor 11.851±4.659 mg/L, and P. tithymaloides 11.391±4.256 mg/L. There was no significant effect of lead content on plant chlorophyll content.","PeriodicalId":8553,"journal":{"name":"Asian Journal of Water, Environment and Pollution","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49302273","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}
Water treatment plants are of great importance in order to provide drinking water to the population. The present work aimed to study the quality of treated water from the Beni-Haroun dam (northeastern Algeria) through the analysis of its physicochemical and bacteriological parameters in order to ensure they conform to international standards. Physicochemical and bacteriological parameters of untreated water were also analysed and then compared to the same physicochemical and bacteriological parameters obtained after applying treatment procedures in order to evaluate the efficiency of these procedures on the water quality. As a result, the physicochemical parameters of treated water Beni-Haroun dam were revealed in concordance with the established international standards. Concerning bacteriological results, despite the presence of certain microorganisms in some analysed samples, their loads remained very low and do not constitute a major health risk. Based on our analyses, treated water from Beni-Haroun Dam remains generally of good quality.
{"title":"Evaluating Water Quality of Beni-Haroun Dam (Northeastern Algeria) Before and After Treatment Procedures","authors":"S. Bousbia, N. Bouchareb","doi":"10.3233/ajw230047","DOIUrl":"https://doi.org/10.3233/ajw230047","url":null,"abstract":"Water treatment plants are of great importance in order to provide drinking water to the population. The present work aimed to study the quality of treated water from the Beni-Haroun dam (northeastern Algeria) through the analysis of its physicochemical and bacteriological parameters in order to ensure they conform to international standards. Physicochemical and bacteriological parameters of untreated water were also analysed and then compared to the same physicochemical and bacteriological parameters obtained after applying treatment procedures in order to evaluate the efficiency of these procedures on the water quality. As a result, the physicochemical parameters of treated water Beni-Haroun dam were revealed in concordance with the established international standards. Concerning bacteriological results, despite the presence of certain microorganisms in some analysed samples, their loads remained very low and do not constitute a major health risk. Based on our analyses, treated water from Beni-Haroun Dam remains generally of good quality.","PeriodicalId":8553,"journal":{"name":"Asian Journal of Water, Environment and Pollution","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47842834","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}
Solar photovoltaic panels are very widely used these days across the country. Their usage is also being encouraged by the central government and there are many subsidies in place as well. The tilt angle of the solar photovoltaic panel with the horizontal along with module orientation determines the transformation of energy into electricity. The optimum tilt angle for solar photovoltaic panels is considered for incident annual solar energy, this angle is usually kept unchanged for the year-round cycle. In this research work, we examine the optimum tilt angles of panels for the incident energy over panels on an annual and seasonal basis in combination with the shading effect of these panels over rooftops of Delhi (latitude 28.7° N), Nagpur (latitude 21.15° N) and Ahmedabad (latitude 23.02° N). Solar radiation data for the investigation purpose has been classified under 3 seasons, i.e., summer (May, June, July, August), winter (November, December, January, February) and equinoxes (March, April, September, October). It is observed that when panels are arranged facing down south and adjusted seasonally for optimum tilt angle; on an annual basis, they generate higher electrical energy and, in the summer, cast a larger shadow; in the winter, cast a smaller shadow as compared to panels which have fixed tilt throughout the year. This arrangement helps in reducing the solar heat flux via the roof in summer and increasing it in winter, thus, favourably affecting air conditioning load levelling in the structure.
{"title":"Investigation of Shadowing Effect and Electricity Generation in Seasonally Adjusted Solar Photo Voltaic Arrays in Indian Sub-Continent","authors":"P. Duggal, R. K. Tomar, N. Kaushika","doi":"10.3233/ajw230046","DOIUrl":"https://doi.org/10.3233/ajw230046","url":null,"abstract":"Solar photovoltaic panels are very widely used these days across the country. Their usage is also being encouraged by the central government and there are many subsidies in place as well. The tilt angle of the solar photovoltaic panel with the horizontal along with module orientation determines the transformation of energy into electricity. The optimum tilt angle for solar photovoltaic panels is considered for incident annual solar energy, this angle is usually kept unchanged for the year-round cycle. In this research work, we examine the optimum tilt angles of panels for the incident energy over panels on an annual and seasonal basis in combination with the shading effect of these panels over rooftops of Delhi (latitude 28.7° N), Nagpur (latitude 21.15° N) and Ahmedabad (latitude 23.02° N). Solar radiation data for the investigation purpose has been classified under 3 seasons, i.e., summer (May, June, July, August), winter (November, December, January, February) and equinoxes (March, April, September, October). It is observed that when panels are arranged facing down south and adjusted seasonally for optimum tilt angle; on an annual basis, they generate higher electrical energy and, in the summer, cast a larger shadow; in the winter, cast a smaller shadow as compared to panels which have fixed tilt throughout the year. This arrangement helps in reducing the solar heat flux via the roof in summer and increasing it in winter, thus, favourably affecting air conditioning load levelling in the structure.","PeriodicalId":8553,"journal":{"name":"Asian Journal of Water, Environment and Pollution","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47619113","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}
MSW management directly impacts public health and quality of life in cities. Unfortunately, solid waste management is generally considered the exclusive domain of government. However, since residents are the primary generators of municipal solid waste, there is virtually worldwide consensus among all major stakeholders that citizens must actively participate in this process. The need for more awareness among citizens and better communication between the government and citizens severely hampers this. Therefore, specific government initiatives are needed to bridge this communication gap. With this in mind, this study presents a structure for developing a waste management transmission process that recognises the public’s leading issues and the best strategies for raising public awareness. The results indicate that people’s attitudes toward solid waste could be more satisfactory. The government should also involve the public in managing regional and local waste problems.
{"title":"People’s Perception and the Current Policy Gap for Solid Waste Handling in Delhi","authors":"Sumant Shekhar, M. Garg, V. Verma, T. Jindal","doi":"10.3233/ajw230051","DOIUrl":"https://doi.org/10.3233/ajw230051","url":null,"abstract":"MSW management directly impacts public health and quality of life in cities. Unfortunately, solid waste management is generally considered the exclusive domain of government. However, since residents are the primary generators of municipal solid waste, there is virtually worldwide consensus among all major stakeholders that citizens must actively participate in this process. The need for more awareness among citizens and better communication between the government and citizens severely hampers this. Therefore, specific government initiatives are needed to bridge this communication gap. With this in mind, this study presents a structure for developing a waste management transmission process that recognises the public’s leading issues and the best strategies for raising public awareness. The results indicate that people’s attitudes toward solid waste could be more satisfactory. The government should also involve the public in managing regional and local waste problems.","PeriodicalId":8553,"journal":{"name":"Asian Journal of Water, Environment and Pollution","volume":" ","pages":""},"PeriodicalIF":0.5,"publicationDate":"2023-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47564349","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}
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