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N. L. Panwar N. S. Rathore A. K. Kurchania 《Mitigation and Adaptation Strategies for Global Change》2009,14(6):547-556
This paper deals with field related experience of a low temperature industrial heat application through biomass gasification.
The gasification system is essentially consists of an open top down draft reactor lined with ceramic. The experiment reveals
that 6.5 kg of liquefy petroleum gas (LPG) is fully replaced by 38 kg of sized wood on hourly basis. The maximum temperature
attained was 367°C in 130 min at 100.7 Nm3 h−1 gas flow rate. This system has resulted a saving of about 19.5 tons of LPG over 3,000 h of operation, implying a saving of
about 33 tons of CO2 emission, thus a promising candidate for clean development mechanism. Fuel economic analysis of gasifier system showed that
the saving was about 13,850 US$ for 3,000 h of baking operation. 相似文献
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N. L. Panwar N. S. Rathore 《Mitigation and Adaptation Strategies for Global Change》2009,14(8):711-720
Facing the finiteness of fossil fuels and its associated environmental problems, new prospects to cover energy demand are
urgently required. Energy from surplus biomass can support an essential contribution to a sustainable energy generation. This
paper deals with a case study of surplus biomass available in the Indian state Rajasthan. About 1275 MW electrical power is
possible to generate through biomass gasifier based power generation plant through surplus biomass available in Rajasthan.
About 1656 tonnes of CO2 can be saved annually by installation of 1 MW biomass gasifier based power plant. The techno economic parameter like net
present worth, cost benefit ratio and pay back period are also carried out for this route of power generation and these are
about 1.18 million US$, 1.42 and 8 years and 2 months respectively. 相似文献
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In this paper, economic feasibility of two vegetable crops (i.e., cucumber and tomato) cultivated in a naturally ventilated greenhouse, and the net present worth, cost-benefit ratio, payback period, and internal rate of return for these crops on year-round cultivation are presented. The cost-benefit ratio demonstrated that growing cucumbers and tomatoes can be economically viable in this climatic region. The present experimental study was conducted in the composite climatic condition of Udaipur (24°35′N, 73°42′E), India. The study area is defined as arid and semi-arid region of Indian climatic conditions. Droughts are a recurring phenomenon in arid and semi-arid regions creating a situation that affects not only agricultural productivity but also people’s health. In particular, the western part of the state is a desert, and its socioeconomic status influences nutrient purchasing power. A poor diet can lead to a vitamin and mineral deficiency. The state of Rajasthan has good agricultural potential; interventions using protected cultivation practices can increase the production and productivity of vegetable crops. However, the current adoption rate of such practices in the state remains very slow, even after a promotional scheme offered by the state government. The government and policymakers should consider offering demonstrations of practices at a larger level. Farmers of the state are marginal and economically poor, requiring more financial assistance. Low cost technologies would be suitable for these farmers. 相似文献
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Ramesh Chand Kasana Nav Raten Panwar Ramesh Kumar Kaul Praveen Kumar 《Environmental Chemistry Letters》2017,15(2):233-240
Copper nanoparticles have improved properties compared to the bulk copper material. Copper nanoparticles indeed find applications in gas sensors, heat transfer fluids, catalysis, solar energy and batteries. Antibacterial and antifungal activities of copper nanoparticles find applications in the agriculture and healthcare sectors. Nonetheless, careless use of copper nanoparticles may cause environmental pollution and health effects. Here we review the biosynthesis of copper nanoparticles using plant materials, named phytosynthesis, and micro-organisms. We also discuss the effect of copper nanoparticles on crops and pathogenic micro-organisms. Copper nanoparticles varying in sizes from 5 to 295 nm have been synthesized using leaf extracts and latex from plants, and using bacteria and fungi. Biosynthesized copper nanoparticles show good antimicrobial activity inhibiting the growth of pathogenic bacteria and pathogenic fungi. Copper nanoparticles enhance the germination and growth of some plants at lower concentrations, whereas high concentrations result in retarded growth. 相似文献
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Cost-effective control of SO2 emissions in Asia 总被引:2,自引:0,他引:2
Cofala J Amann M Gyarfas F Schoepp W Boudri JC Hordijk L Kroeze C Junfeng L Lin D Panwar TS Gupta S 《Journal of environmental management》2004,72(3):149-161
Despite recent efforts to limit the growth of SO(2) emissions in Asia, the negative environmental effects of sulphur emissions are likely to further increase in the future. This paper presents an extension of the RAINS-Asia integrated assessment model for acidification in Asia with an optimisation routine that can be used to identify cost-effective emission control strategies that achieve environmental targets for ambient SO(2) concentrations and sulphur deposition at least costs. Example scenarios developed with this optimisation module demonstrate a potential for significant cost savings in Asia, if emission controls are allocated to those sources that have the largest environmental impact and are cheapest to control. It is shown that strategies that simultaneously address harmful population exposure and the risk of vegetation damage from acid deposition result in the most cost-effective use of resources spent for emission controls. 相似文献
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Two Brassica species Brassica juncea and Brassica carinata of the Indian mustard, were grown in an artificially Ni-contaminated soil to study the tolerance and Ni accumulation. Chelating agent, EDTA was applied at the rosette stage for enhancing the metal uptake. Nickel concentration over almost double that in control was observed in both the species with Ni contamination along with EDTA application. Specie B. juncea appeared to be slightly more tolerant and higher accumulator of Ni. In agreement with the earlier reports, the translocation of the pollutant metal to the shoot from the root seemed to be restricted in both of Brassica species at higher rate of Ni application plus EDTA. The results of the present study indicated that B. juncea has the potential to be hyperaccumulator of Ni. 相似文献
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N. L. Panwar 《Mitigation and Adaptation Strategies for Global Change》2009,14(7):627-633
This paper deals with design and performance of energy efficient biomass cookstove suitable for different fuel wood & briquetted
fuel. It was tested with babul wood (Prosopis julliflora), goundnut (Arachis hypogaea) shell briquettes, sawdust briquettes and Cashew nut (Anacardium occidentale) shell. The stove was insulated by refractory cement (Insulyte -11U) to minimize heat losses. The stove has exhibited about
35% thermal efficiency. The CO and CO2 emission was in the range of 3–6 ppm and 17–25 ppm respectively. The stove works in the range of 1.53 to 1.76 kW of power
rating. The maximum flame temperature was recorded as 763°C when Cashew nut (Anacardium occidentale) shell was used as feed stock. 相似文献
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Agrawal Yash Gupta Trilok Siddique Salman Sharma Ravi Kumar Panwar Narayan Lal 《Environmental science and pollution research international》2022,29(29):44067-44090
Environmental Science and Pollution Research - Mining and extraction of stones and minerals play a significant role in many countries economic growth in the world. The production of dolomite... 相似文献
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