Indian Journal of Environment Engineering最新文献

{"title":"Application of Fine Bubbles in Biofloc Aquaculture: Towards Environmental Sustainability","authors":"William Chirwa","doi":"10.54105/ijee.a1848.03021123","DOIUrl":"https://doi.org/10.54105/ijee.a1848.03021123","url":null,"abstract":"Biofloc Technology (BFT) is specifically designed to tackle critical challenges in aquaculture, including the reduction of excessive water usage, minimizing effluent discharge, optimizing nutrient utilization from feed, and strengthening overall biosecurity on farms. This innovative approach utilizes clusters of bacteria, algae, or protozoa within a matrix rich in particulate organic matter to enhance water quality, improve waste management, and control diseases. Given the system loading rates, there is a heightened need for elevated dissolved oxygen levels and optimal flow rates. Acknowledging the limitations of traditional aeration systems, this review hypothesizes employing fine bubbles as a panacea. The article, therefore, condenses information on fine bubble impacts in biofloc with a special focus on faster biofloc establishment, favorable microbial diversity, improved respiratory health, accelerated growth rates, optimized metabolism, improved feed conversion ratios, reducing costs, and enhanced overall aquatic health. The suitability of fine bubbles in diverse aquaculture environments is also explored with highlights on areas for further research to optimize and scale up fine bubble-fueled biofloc as an environmentally friendly aquaculture.","PeriodicalId":252633,"journal":{"name":"Indian Journal of Environment Engineering","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140418194","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":"Carbon Neutral Fuels and Chemicals from Standalone Biomass Refineries","authors":"Nallapaneni Sasidhar","doi":"10.54105/ijee.b1845.113223","DOIUrl":"https://doi.org/10.54105/ijee.b1845.113223","url":null,"abstract":"The urgency to eliminate man-made greenhouse gas emissions and achieve energy security/independence by all countries justifies an energy policy that considers the major role of renewable biomass as a source of organic feedstock for producing adequate organic chemicals and biofuels on a sustainable basis and economically. This paper investigates a three-stage thermochemical process to convert wet biomass into a tailored mix of syngas for producing green methanol, hydrogen, and Fischer-Tropsch products. The three-stage thermochemical process involves the torrefaction of wet biomass using hot carbon monoxide gas, pyrolysis of torrefied biomass to produce biochar, and final gasification of the pyrolysis gases by auto thermal reforming up to 1400o C temperature. The proposed process is suitable to utilize a wide variety of biomass materials such as freshly harvested biomass without field drying, agro waste, forest/plantation litter, organic municipal solid wastes, sludge from sewage water treatment plants, solid biomass rejects from anaerobic digesters, bagasse from sugar or first-generation ethanol plants, organic solid rejects from second-generation ethanol plants, waste glycerides from biodiesel plants, industrial organic waste, etc. The proposed process offers valorization of biomass so that the net income of farmers is enhanced a fewfold by selling freshly harvested biomass. The economic analysis found that carbon-neutral hydrogen, methanol, etc can be produced below the prevailing costs of such products derived from fossil crude oil or natural gas without considering carbon credits. It is feasible in a standalone biomass refinery to use any biomass as only one bulk raw material/feedstock without any harmful emissions to water bodies or the atmosphere except carbon neutral carbon dioxide gas if not sequestrated.","PeriodicalId":252633,"journal":{"name":"Indian Journal of Environment Engineering","volume":"93 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139202091","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":"Rainfall Trend Investigation of Hemavati Catchment, Karnataka, India","authors":"Ashwini B, Dr. Shivakumar J Nyamathi","doi":"10.54105/ijee.a1847.113223","DOIUrl":"https://doi.org/10.54105/ijee.a1847.113223","url":null,"abstract":"The rainfall trend investigation study supports to judge the periodic pattern of rainfall. The quantifiable evaluation of the overall impacts of different elements, for example, changes in precipitation, temperature, evapotranspiration, environmental changes encouraged by a hazardous atmospheric deviation and human activities on the streamflow is critical for territorial appraisal of water assets and its feasible management. This study focusses on to analyze the seasonal rainfall trend in Hemavati Catchment, Karnataka, India. For the present study, thirty-two years (1990-2021) of seasonal rainfall trend has been examined using the Mann-Kendall assessment and Sen’s gradient estimation methods. The investigation has been carried out for the cold weather season (December-February), hot weather season (March-May), southwest monsoon season (June-September), and post–monsoon season (October–November) by the use of XLSTAT software and the study demonstrations that here is a varied trend in the catchment.","PeriodicalId":252633,"journal":{"name":"Indian Journal of Environment Engineering","volume":"32 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139205591","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":"Multipurpose Freshwater Coastal Reservoirs and Their Role in Mitigating Climate Change","authors":"Nallapaneni Sasidhar","doi":"10.54105/ijee.a1842.053123","DOIUrl":"https://doi.org/10.54105/ijee.a1842.053123","url":null,"abstract":"A coastal reservoir (CR) is a freshwater reservoir to store river water in the sea area adjacent to the sea coast by replacing seawater. A CR is formed by constructing a long oceanic dike to impound surplus water that is flowing to the sea from a river basin. Freshwater from the CR is pumped throughout the year into a series of embankment canals to reach upland areas for meeting agricultural, industrial, municipal, etc water needs along with the required base blows and environmental flows in river basins. The embankment canals also create pumped storage hydropower (PSHP) potential to meet the energy storage requirements for harnessing variable power resources like solar, wind, etc which are economical, clean, renewable, and carbon neutral. The oceanic dike also creates a mega-scale ultra-deep sea harbor along with a coastal highway and railroad. CRs are cheaper to construct compared to land-based reservoirs wherever the cost of submerged land and immovable property acquisition and rehabilitation of the affected population is very high. They also serve multipurpose utilities such as deep-sea harbor, road transport, rail transport, land reclamation, PSHP energy storage, rejuvenation of over-exploited rivers, etc without appreciable overall environmental damage. CR projects are feasible in every continent except Antarctica as there are few mighty rivers with huge surplus water discharges to the sea and also the existence of vast desert/semi-desert areas which can be converted into productive agricultural lands or forest lands with water supplied from the CRs. Greening the desert or semi-desert lands into lush green farms or forest lands would enhance the soil carbon storage and also provide food grains and biomass. The available biomass can be used as feedstock to produce carbon-neutral biofuels to replace fossil fuels which are contributing to global warming. Few feasible CR projects are listed in the paper that can harness nearly 9,000 billion cubic meters (bcm) of water annually and contribute to achieving a carbon-neutral world. To explain the concept of the freshwater CRs and the associated embankment canals, a CR project to utilize the surplus waters of the Brahmaputra, Ganga, and Meghna rivers is considered as a case study in some detail in this paper. The project would create a 360 bcm capacity CR to harness nearly 1,200 bcm of water throughout the year regardless of monsoon vagaries for meeting various water needs in all major river basins between the Ganga and Krishna rivers.","PeriodicalId":252633,"journal":{"name":"Indian Journal of Environment Engineering","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114022310","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":"Uptake of Ruthenium Bearing Waste by Co Precipitation using Lead Sulfide as Scavenger","authors":"B. Panigrahi","doi":"10.54105/ijee.b1837.112222","DOIUrl":"https://doi.org/10.54105/ijee.b1837.112222","url":null,"abstract":"During the fission of Uranium for generating electricity, fission products are produced. Ru-106 is one among them. In the decontamination of nuclear components using decontaminating agents like EDTA, NDA, oxalic acid etc, Ruthenium gets complexed and the waste generated as liquid contains Ru-106 in the complex state. It is necessary to free Ru106 from the complex by oxidation of the complex. This will generate Ruthenium effluent with Ru-106 in the free state amenable for further treatment. An attempt has been made to co precipitate Ruthenium along with lead sulphide. The optimum pH, dosing of chemicals needed for in situ precipitation of lead sulphide were estimated in the batch study. Column studies using lead sulphide on polyurethane foam as column material were carried out for the treatment of Ruthenium bearing effluent. The optimum flow rate for maximum removal of Ruthenium was found to be 20 BV/h. Under optimized condition the max removal of Ruthenium was found to be 84% in the batch study, and 80% in the column study.","PeriodicalId":252633,"journal":{"name":"Indian Journal of Environment Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128647055","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":"Investigation of Physiochemical Properties of Groundwater at Estako-West, Edo-North, Nigeria","authors":"O. Y., I. R, E. L., Eriakha C.E, G. I.N","doi":"10.54105/ijee.c1826.051322","DOIUrl":"https://doi.org/10.54105/ijee.c1826.051322","url":null,"abstract":"The physicochemical parameters of groundwater at Auchi and South-Ibie were investigated to determine underground water quality in this environment. Water sampled locations in Auchi were categorized as Iyekhei (Iyekhei), Auchi Poly Water (Auchi PW), Auchi Poly Hostel (Auchi PH), Double Delight Hostel (DDH); South-Ibie locations are Levis Gas Plant (LGP), Pastoral Centre (PC), Global Castle Hostel Sawmill Road (GCHS), Arsenal Hostel and, Lagos Street (AHLS). A total number of 80 water samples from eight locations were collected and analyzed using some statistical metrics to determine the relationship among measured parameters. The pH of water samples ranged from 1.4 at GCHS to 4.12 at AHLS. The result indicated that all the investigated water samples have low pH values with a high alkalinity level. Total dissolved solids (TDS) of 300mg/L, 400mg/L, and 500mg/L were obtained from the water samples at Iyekhei, Auchi PH, and DDH. These values are within the allowable World Health Organization (WHO) standard. However, the chloride level for all locations was very high except for Iyekhei, with a value of 115 mg/L, which is accepted within the WHO requirement of 250 mg/L. Conductivity values of four sampled water locations; namely, Auchi PH, DDH, PC, and GCHS, are within the allowable limit. High conductivity values of 304 sm/cm, 116.7sm/cm, and 845 sm/cm were obtained for LGP, Auchi PW, Iyekhei, respectively. All the water sampled locations' results indicated that none of the sampled water is within the WHO required standard of 20oC to 23oC. The statistical metrics showed a strong relationship between the conductivity and chloride concentration with R2=0.7174; this may be related to some dissolved conductive ions in the water sampleThe research study's output is imperative to understand the relationship between different groundwater parameters to develop and good groundwater quality.","PeriodicalId":252633,"journal":{"name":"Indian Journal of Environment Engineering","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115576780","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":"Therapeutic Nanoparticles: Advantages and Toxicity","authors":"Dr. Lata Ramrakhiani","doi":"10.54105/ijee.c1828.051322","DOIUrl":"https://doi.org/10.54105/ijee.c1828.051322","url":null,"abstract":"The present review focused on various advantages and hazardous aspects of therapeutically used nanoparticles. Therapeutic applications of nanoparticles have been covered in cancer diagnosing and therapy, surgery, bio-detection of disease markers, molecular imaging, implant application, tissue engineering, and devices for gene, drug, radionuclide, and protein delivery. Many therapeutic nanotechnology applications are still in their beginning stages. However, promising applications are being developed especially in the field of cancer therapy. Nanoparticles are proficient as carriers for chemo-therapeutic drugs and enhance their therapeutic index. These NPs act as therapeutic agents in gene and photothermal therapy. Furthermore, they function as molecular imaging agents to distinguish target cells and monitor cancer progression. Finally, the generations of toxic biological responses of these nanoparticles are mentioned based on detailed explanations of NPs toxicity assessment. Evaluation of potential toxicity of NPs are mainly comprises of its physicochemical properties, inclusive particle characterization (such as size, shape, specific surface area, agglomeration, solubility, element impurity etc.), function of cellular and non-cellular in vitro toxicity assessment and animal supported toxicological measures.","PeriodicalId":252633,"journal":{"name":"Indian Journal of Environment Engineering","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127288485","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":"Impacts of Limestone Exploitation on the Socio-economic Development of Okpella, Nigeria","authors":"O. Y., Bada A.O., Elamah D, Akharia O.O, Erayanmen I.R.","doi":"10.54105/ijee.c1829.051322","DOIUrl":"https://doi.org/10.54105/ijee.c1829.051322","url":null,"abstract":"Limestone and other solid minerals exploitation have been a major activity at Okpella and its environs. This has tremendously contributed to the economic development of the host community, and on the other side poses a great danger to the health and the well-being of Okpella due to the continuous release of carbon emission, suspended particulate matter, and defying noise pollution from the mining and hauling equipment. However, long extraction of limestone has been attributed to land degradation as responded by 43.6% of the sampled population, whereas 19.2%, 14.6%, and 12.7% agreed to the use of heavy-duty equipment, land clearing, tailing dams, and application of toxic materials as responsible for land degradation and devaluation. Conversely, 39.4% of the respondents indicated that the exploration of limestone and other solid minerals could be attributed to cough, 22.5% to catarrh, and 13.2% to malaria. In conclusion, it is obvious that limestone exploration is beneficial to the socio-economic development of the host community but detrimental to their human and environmental health.","PeriodicalId":252633,"journal":{"name":"Indian Journal of Environment Engineering","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130016365","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":"The Different Type of MPPT Techniques for Photovoltaic System","authors":"Apar Chitransh, Sachin Kumar Mr.","doi":"10.35940/IJEE.A1809.111221","DOIUrl":"https://doi.org/10.35940/IJEE.A1809.111221","url":null,"abstract":"We know that sun is the only sources which is available free of cost in our environment for the PV module. when the sun strikes in to the PV cell it converts to the electrical energy. Now a days to fulfill the requirement of energy the solar energy plays a main role of that. But some time this solar energy is not sufficient to fulfill this requirement than some time we use the MPPT techniques which is increase the power generation and main advantage of this techniques is that this is work in any climate. The full form of MPPT is MAXIMUM POWER POINT TRACKER. It gets the maximum power from the available PV unit and it is not depending upon the any environmental conditions. In this paper we discuss in detail the several abilities that how they get the maximum power point and system convergence, efficiency and cost of implementation. In this paper we show that all type pf MPPT techniques.","PeriodicalId":252633,"journal":{"name":"Indian Journal of Environment Engineering","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131054943","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":"Green Spaces Availability versus Accessibility: Case of Okhla, South Delhi","authors":"Bushra Saba","doi":"10.35940/IJEE.B1814.111221","DOIUrl":"https://doi.org/10.35940/IJEE.B1814.111221","url":null,"abstract":"Green spaces are inevitable for people to live and grow. These spaces form an ambit for interaction with nature and people from myriad groups. This paper examines the availability of such spaces in ward no. 102S and 101S of South Delhi and the resident’s accessibility to these spaces. The green cover available per person in Sarita Vihar is 14.645 Sq m/Person which fulfils the URDPFI and WHO guidelines in contrary to 3.969 Sq m/Person for Abul fazal enclave. The Public parks are located towards the periphery in Sarita Vihar, more than the walking distance of 400m. 1 public park exists in Abul Fazal Enclave toward the extreme periphery accessible with a ticket of Rs 30 for the adults. It concludes giving possible recommendations at a micro level for better allocation of green spaces based on factors of density and context of the settlement.","PeriodicalId":252633,"journal":{"name":"Indian Journal of Environment Engineering","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125208200","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}