- 21 November, 2024
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- ONECSIR
| Designation: |
Principal Scientist
|
| Email Id: | sb_wath[at]neeri[dot]res[dot]in |
| Qualification: |
B.E. (Chemical), M.B.A, M.E. (Chemical) |
| Specialization: |
Chemical Engineering
|
| Address: |
Project Monitoring and Planning Division, Nagpur
|
| Biodata: |
| Sr. No. | Project Name |
|---|---|
| 1 |
Low cost & affordable technology for improving the sanitation & hygiene in Rural AreasCSIR-800
Designed, developed and demonstrated Low Cost and Affordable Mechanical Automatic Urinal-Toilet Flusher for Rural Areas. |
| 2 |
Waste to Wealth (W2W): Plastic Recycling (CSC120) Evaluation/Development of Recovery and Recycling processes/practices for the recovery of valuable material from E-waste
To study the Personal Computer (PC) based E-waste problem and characterization studies. To study and analyze various physical, chemical and metallurgical processes/ practices available for reuse, recycle and recovery of preferably One valuable. To evaluate/develop the feasible and environmental friendly process strategy (Combination of Physical, Chemical, Metallurgical processes, etc.) for the recovery and recycling of identified one valuable material from E-waste based on the study |
| 3 |
Design and Development of Mosquito Killing Machine
To design and develop a Mosquitoes - Insects Killing Machine (MIKM) |
| 4 |
Ceiling Fan : A hanging Source of Power Generation (CSIR-EMPOWER Project)
To generate Electricity/ power from the running (revolving) ceiling fan. To alter the design of the ceiling fan body in order to accumulate the permanent magnet fitted to the CF shaft in the coil of wires, which will be specially design to fit over the CF body for electricity generation without hampering the basic function of ceiling fan. To Store the generated power in the battery/capacitor for other use. |
| Sr. No. | Publication Name |
|---|---|
| 1 |
Separation of WPCBs by dissolution of brominated epoxy resins using DMSO and NMP: A comparative study (Chemical Engineering Journal)
|
| 2 |
A Mechanical Automatic Urinal-Toilet Flusher for Swach Bharat Mission
A flush urinal-toilet disposes human waste by using water through a drainpipe to another location. A series of urinal-toilets are fitted in offices, malls, multiplexes, educational institutions, bus railway stations, airports, commercial complexes, stadia and other public places. Most have manual flushing systems like push button, trigger, pull chain, etc. however, use of such manually operated flush can spread germs and bacteria when contacted and thus users avoids to flush or lead to wastage of water if used. Now a day’s laser or infrared sensor operated flushes is also used in the places of high commercial value and importance but are expensive and required continuous O&M. Therefore, the sanitary facility may remain un-flushed leading to unhygienic conditions and foul smell. Thus need for a low cost automatic flushing apparatus which can flush the right-controlled amount of water and avoid direct contact thus conserving water as well as maintaining personal hygiene and sanitationThe present invention relates to a specially designed mechanical automatic urinal-toilet flusher and a mechanism thereof, which utilizes the weight load/pressure of the person using the urinal-toilet for automatic flushing the urinal- toilet with the specified or measured quantity of water to prevent odors, soil drain and scale buildup. It ensures the compulsory, regular and un-intentional flushing of the urinal-toilet without any direct hand contact of the user to the flush and also conserve water at the same time is simple and cheap, which can be fitted-retrofitted to new as well as existing water pipe line of the urinal-toilets. |
| 3 |
Waste Management in India: E-waste recycling & Bio-methanation -Case studies
Waste management system in India at present is taking a significant change. Majority of the problems are associated with the management of municipal solid waste, E-waste and CD waste. Though the MSW rules 2000 were implemented long back, the rules pertaining to e-waste management has been implemented in 2012. All the rules related to waste management are undergoing revision at present which is expected to lead to a sea change in effectiveness in addition to some new rules in the country. The traditional system of landfilling or dumping is now being replaced by different waste treatment processes. This paper deals with two case studies, of a E-waste recycling plant and a Bio-methanation plant in India, which were studied by a visiting team from the recently held IconSWM 2015 in Bangalore. It has been observed that both the plants are running effectively to curb the disposal of wastes into dumping grounds as well as recover materials and energy. This study will present the materials and energy recovery processes adopted in both the plants and proposed methodologies to make the systems more effective. This study will also highlight the general and specific issues and challenges related to E-waste recycling and biomethanation plants and elaborate on how to overcome those. The results of the study will help the researchers and implementers for further actions. |
| 4 |
Separation of WPCBs by dissolution of brominated epoxy resins using DMSO and NMP: A comparative study
Printed circuit boards (PCBs) in electrical and electronic equipment (EEE) abide of valuable and hazardous materials and due to its complex and discrete make up across manufacturers, processing of waste PCBs (WPCBs) is a massive challenge. And therefore either completely novel or improved processes are needed for recycling of WPCBs and recovery of valuable materials from it. Present comparative study, was performed for processing WPCBs using solvents N-methyl-2-pyrrolidone (NMP) and dimethyl sulfoxide (DMSO). Various parameters, which include WPCB sizes; solid to liquid (S/L) ratio; temperature and time, were investigated to understand the WPCBs processing by dissolving bromine epoxy resin using solvents. Results showed that the rate of removal and separation of the bromine epoxy resin (BER) increases with respect to increasing various parameters. Optimum condition of complete separation of WPCBs using NMP were S/L ratio of 1:5, WPCB size/area of 4 mm/16 mm2 and 100 °C for 90 minutes, whereas for DMSO the optimum dissolution of bisphenol A were obtained in S/L ratio of 1:2, size/area of 6 mm/36 mm2 at 90 °C for 90 min. Overall, NMP proves to be better solvent for bromine epoxy resin than DMSO in terms of bisphenol A dissolution and separation of various layers of WPCB. Used solvents can be vaporised–condensed under the decompression for regeneration. This novel process can be an eco-friendly and effective option for separation and recovery of various valuable materials such as metals, glass fibres, etc. from WPCBs. Further research and testing is needed for precise evaluation between two processes using NMP or DMSO solvents, in terms of the valuable material recovery from WPCB and process techno-economics. |
| 5 |
A review on water Resources Availability and management practices in India
Conservation and management of water resources is critically important for a vast and fast developing country like India. However, rapidly increasing population and continuous betterment of lifestyle has put tremendous pressure on water resources around major cities leading to alarmingly reduction in per capita water availability. Moreover, increasing fluctuations in precipitation over the country has only aggravated the problem. This paper presents the current and future water scenario in India and also discusses the impacts of various factors like population, pollution, mismanagement, climate change, government laws & regulations etc. on water resources and its availability. While emphasis has been laid on water productivity and various government initiatives, the paper also discusses and analyzes limitations in water management. Based on study and analysis, the paper finally recommends Best Management Practices (BMP) & Best Available Technologies (BAT) used & practiced worldwide for effective & efficient water management in India. The paper also highlights the importance of Public Private Community Partnership (PPCP) along with the recently developed monitoring tools and data information systems for sustainable & effective water resource management to meet present requirements without compromising the future needs. |
| 6 |
E-waste scenario in India, its management and implications
Electronic waste or E-waste comprises of old, end-of-life electronic appliances such as computers, laptops, TVs, DVD players, refrigerators, freezers, mobile phones, MP3 players, etc., which have been disposed of by their original users. E-waste contains many hazardous constituents that may negatively impact the environment and affect human health if not properly managed. Various organizations, bodies, and governments of many countries have adopted and/or developed the environmentally sound options and strategies for E-waste management to tackle the ever growing threat of E-waste to the environment and human health. This paper presents E-waste composition, categorization, Global and Indian E-waste scenarios, prospects of recoverable, recyclable, and hazardous materials found in the E-waste, Best Available Practices, recycling, and recovery processes followed, and their environmental and occupational hazards. Based on the discussion, various challenges for E-waste management particularly in India are delineated, and needed policy interventions were discussed. |
| 7 |
A roadmap for development of sustainable e-waste management system in India
The problem of E-waste has forced Environmental agencies of many countries to innovate, develop and adopt environmentally sound options and strategies for E-waste management, with a view to mitigate and control the ever growing threat of E-waste to the environment and human health. E-waste management is given the top priority in many developed countries, but in rapid developing countries like India, it is difficult to completely adopt or replicate the E-waste management system in developed countries due to many country specific issues viz. socio-economic conditions, lack of infrastructure, absence of appropriate legislations for E-waste, approach and commitments of the concerned, etc. This paper presents a review and assessment of the E-waste management system of developed as well as developing countries with a special emphasis on Switzerland, which is the first country in the world to have established and implemented a formal E-waste management system and has recycled 11 kg/capita of WEEE against the target of 4 kg/capita set by EU. And based on the discussions of various approaches, laws, legislations, practices of different countries, a road map for the development of sustainable and effective E-waste management system in India for ensuring environment, as well as, occupational safety and health, is proposed. |
| 8 |
Reduction in the Carbon Footprint of Coal-Fired Thermal Power Plants by Promoting Compact Fluorescent Lamps and Light-Emitting Diodes in Households, Offices, and Commercial Centers
"The electricity consumption of compact fluorescent lamps (CFLs) and light-emitting diode (LED) lamps is low, making them a useful tool for minimizing the rapidly increasing demand for electrical energy in India and elsewhere. This chapter aims to project the likely electrical energy conservation in a scenario of complete replacement of existing fluorescent tubes (FTs) by CFLs or LEDs at the Council of Scientific and Industrial Research (CSIR)-National Environmental Engineering Research Institute (NEERI), including the financial repercussions and indirect reduction in emissions of greenhouse gases (e.g. CO2, N2O, CH4) and carbon footprint, as well as a few important air pollutants (e.g. SO2, NO, black carbon, suspended particulate matter (SPM), mercury) in a coal-fired thermal power plant. The calculations show that the institute could save around 129,870 and 164,970 kW h of electricity per annum by replacing FTs with CFLs and LEDs, respectively, thereby saving approximately INR 1357,142 (US$21,935.37) and INR 1723,937 (US$27,863.85) in electricity costs per year for CFLs and LEDs, respectively. The use of CFLs and LEDs would be able to minimize approximately 47,127.14 and 59,863.94 kg of CO2–C equivalent emissions over a 100-year time horizon, respectively. Moreover, reductions of approximately 961, 1,039, 10, 390, 19, and 0.55 kg of SO2, NO, BC, SPM, PM10 and Hg emissions per year, respectively, could be achieved in electricity conservation by replacing FTs with CFLs at CSIR-NEERI. Reductions of approximately 1,221, 1,320, 13, 495, 25 and 0.7 kg of SO2, NO, BC, SPM, PM10 and Hg emissions per year, respectively, could be achieved by replacing FTs with LEDs at CSIR-NEERI. " |
| 9 |
E-waste an urban environmental pollution: problems and prospects in developing countries
"Electronic waste or E-waste comprises of old, end-of-life electronic appliances such as computers, laptops, TVs, DVD players, refrigerators, freezers, mobile phones, MP3 players etc. which have been disposed of by their original users. E-waste contains many hazardous constituents that may negatively impact the environment and affect human health if not properly managed. The problem of E-waste has forced Environmental agencies of many countries to innovate, develop and adopt environmentally sound options and strategies for E-waste management, with a view to mitigate and control the ever growing threat of E-waste to the environment and human health. E-waste management is given the top priority in many developed countries, but in rapid developing countries like India, it is difficult to completely adopt or replicate the E-waste management system followed in developed countries due to many country specific issues viz. socio-economic conditions, lack of infrastructure, absence of appropriate legislations for E-waste, approach and commitments of the concerned, etc. The paper presents E-waste scenario in developing countries, E-waste composition, categorization, prospects of recoverable, recyclable and hazardous materials found in the E-waste, recycling and recovery options followed And the overview and need of the laws and regulation related to E-waste for better E-waste Management." |
| 10 |
Evaluation of the effect of size reduction and thermal treatment on metal extraction from PCBs of mother board and digital video drive of desktop PC
The study aims at evaluating the effect of particle size and thermal treatment on printed circuit boards (PCBs) of Mother Board (MB) and DVD on metal extraction. Results show around 90-95% (w/w) and 35-40% (w/w) of total Al and Cu respectively, in CPU could be recovered by systematized disassembly. Remaining embedded Al and Cu require metallurgical or hydro-metallurgical processing. Cu extraction increases with size reduction. Thermal treatment of MB-PCB shows reduction in Cu extraction (23-38%) for all sizes in comparison without thermal treatment, while DVD-PCB showed surge in extraction after thermal treatment (41-141%) in comparison without thermal treatment. |
| 11 |
Recycling E-Waste for Sustainable Management of Natural Resources. In: Monitoring and Assessment of Natural Resources for Sustainable Management
Electronic waste (E-waste) which consists of old, end-of life, discarded electrical and electronic equipment’s (EEE), is the most rapidly growing MSW stream worldwide. The toxic and hazardous materials present in it can lead to severe environmental and occupational hazards, if not handled properly. However, presence of significant quantity of valuable recoverable material makes it a potential secondary resource for metal extraction. Composition of E-waste is complex with 38% ferrous material, 28% non-ferrous material, 19% plastic, 4% glass, 11% other (wood, rubber, ceramic, etc.). Although the precious materials are only 1% by weight, it accounts to nearly 80% of the total intrinsic value. Around $ 21 billion of Au and Ag are used in various EEE per annum.Along with precious metals it also contains various rare earth metals such as Platinum, Gallium, Indium, Lithium, etc. Primary metal extraction from mining has significant negative environmental impact due to substantial natural resources consumed and low recovery efficiency; comparatively extraction from E-waste is 50 times greater which is much more economical with lesser ecological foot printand the energy savings are considerable: aluminium 95%, copper 85%, iron and steel 74%, plastics 80%. This is the reason why E-waste recycling which is also called as “Urban Mining” can facilitate in sustainable management and conservation of rapidly depleting natural resources. |
| 12 |
An Effective Mosquitoes-Insects Killing Machine (MIKM)
Mosquitoes-Insects carry many potentially dangerous diseases like mosquito-borne viral encephalitis, dengue, chicken guinea, yellow fever, malaria, filariasis, etc. and affects around one to three million people globally. To minimize risk and to avoid bites, protective measures practiced includes mosquito coils, repellent mats, vaporizers, aerosol and body cream or lotions etc. But there are certain limitations and draw backs associated with the existing products-systems which includes health implication on users due to uses of chemicals, fire hazards and safety, effectiveness, ease of handling/operation and economy. Moreover, it doesn’t completely destroy the mosquitoes-insects and just keeps them at bay, in order to provide the temporary relief for limited hours in the specified area. More importantly due to the recent outbreak and spread of deadly ZIKA VIRUS in African and American continent due to mosquitoes, it is urgently required to control the mosquitoes’ menace. So, there is a need and market for indigenous, low cost, eco-friendly efficient mosquito controlling device. The patented (3013DEL2015) invention describes a use of developed low cost non-hazardous material in a specially design machine which produces mosquito-insect attractants in more economical and convenient way, which lures the mosquitoes-insects towards the source i.e. machine and gets eventually kill by electric field. The invention targeted to be cost effective for controlling the mosquitoes’ problem without any negative implications on user health or environment. |
| 13 |
Study of Valuable and Hazardous Metals from Capacitors of Personal Computer
Desktop personal computer (PC) is one of the major contributors of the waste electrical and electronic equipment’s (WEEE) generated worldwide. Composition of a typical desktop PC is complex and consists of hundreds of different materials which may be valuable, precious as well as hazardous in nature. Due to globalization and changing economic scenario, huge amount of E-waste is generated and its management has become a challenging task. The present paper highlights the various metals that can be recovered and recycle from the capacitors obtained from the printed circuit boards (PCB) of Central Processing Unit (CPU). Capacitors contain valuable (Aluminum, iron, copper, zinc, magnesium, manganese, nickel, etc.), hazardous (lead, chromium) and precious (silver) metals. The study of capacitors has been broadly undertaken following various systematic steps, which includes study of different types of capacitors present on the PCBs, its quantification, and characterizations studies. Effect of surface area on metal leaching efficiency was studied. It was observed that the electrolytic capacitors are present in higher quantity followed by solid electrolytic capacitors. Most of the valuable and hazardous metals were found in ceramic, film and solid electrolytic capacitors, also the metal leaching rate enhances by increasing surface area. |
| 14 |
A mechanical automatic Urinal-Toilet flusher for Swach Bharat Mission
|
| 15 |
Management of E-waste
|
| Sr. No. | Copyright Title |
|---|---|
| 1 |
A MECHANICAL AUTOMATIC URINAL-TOILET FLUSHER, AND ITS MECHANISM THEREOF
|
| Sr. No. | Achievement / Award | Awarded By |
|---|---|---|
| 1 |
IconSWM 2015 Excellent Paper Award
|
"Indian Institute of Science IISc, Bengaluru, India Jadavpur University, Kolkata, International Society of Waste anagement, Air and Water ISWMAW, India" |
| 2 |
IconSWM- Springer Excellence Paper Award 2018
|
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