Trials on new model of sanitory pad incinerator

August 26, 2017

Page_0As a part of technology development for waste processing / recycling work, we at Vigyan ashram are working on development of technology for easy & safe disposal of sanitory pads & other medical waste.

In this work , a recent development is new model of sanitory pad recycler based on pyrolysis prociple.

New model is developed that uses pyrolysis to decompose sanitary napkins into hydrocarbon vapours and combustible gases along with some non-combustible gases and char. These vapours and gases are made to pass over high temperature electric coils (>500 degC) where they auto ignite in the presence of oxygen. The heat from the flames partially drives the pyrolysis of remaining sanitary pads. A smoke stack thermocouple sensor feeds back values to a PID controller implemented through a microcontroller to maintain proper pyrolysis and combustion conditions that result in a transparent flue gases exiting from the chimney.


This model / technic deferens in process of incineration than present available solution in market with following aspects –

  • A drying stage is implemented where the temperatures are kept near 120-200 deg C in the chamber containing the sanitary napkins. This step reduces energy consumption for incineration.
  • A separate process of pyrolysis is used where the chamber containing sanitary napkins is heated to above 300 degC. This process generates a steady stream of combustible pyrolysis vapours and gases. Due to Pyrolysis smoke emission is very less can compare to earlier models.
  • These gases further pass over the red hot electric coil where they flame and incinerate inside material.

These process are combined into a compact thermally insulated product which is controlled by a microcontroller system.

To achieve the desired low emission & energy use for incineration the following processes are required:

  • Using an electric coil generate high temperatures, around 500 degC.
  • Use the high temperatures to cause pyrolysis (begins above 300 deg C) of sanitary pad material and bodily wastes, decomposing them into hydrocarbon vapours and combustible gases (CO).
  • Ensure that HC and combustible gaseous fumes mix with sufficient air to produce lean or at the most stoichiometric ratio mixture.
  • Ensure that the gas mixture passes through the high temperature electric coils to result in autoignition and flaming reactions.
  • Harvest the exothermic heat from the combustion of pyrolysis gases to lessen the role of electric coil in the pyrolysis process.
  • Exit the combustion gases through a simple chimney.
  • Use a microcontroller to implement a PID controller for electric heater using flue gas temperatures as feedback.

Presently we are conduction field trial for this model & hopeful will be ready with marketable model in next 3-4 months.

FOr any further details please write us on vapabal@gmail.com



Trials on Dome Dryer

June 1, 2017

Trials started on  ’Dome Dryer’. Dome dryer is, dryer  based on natural air convention & dehumidification. This drying concept uses geodesic dome shape to generate natural air movement for faster drying. Initial trials ,showed that it can be effectively used in winter season  This dryer will be very useful for drying of high value fruits , vegetables & spices with maximum colour , flavours & nutritional value retention.

Initial trial have shown encouraging results on Mint leaves , ginger , onion etc. We are working on testing its effectiveness in different agro-climatice regions / seasons and standerdizing it for further dissemination.

Form more information please refer trial report –Dome dryer



Vigyan Ashram SUMMER Training Programs

April 15, 2017

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Vigyan Ashram announces short term training programs for SUMMER holidays during April – May 2017. We welcome individuals to show their passion for technology with hands on experience of CNC tools such as 3-D printer, Plasma-cutter, Modela Machine, Solidworks, Autocad. This is open opportunity, who see things differently and have potential to transform there ideas into reality. We are open source platform where Gender, Education, Age are only the numbers not the hurdles.

We are providing Incubation support to individuals who wants to start their enterprises through Entrepreneurship Development training Program and ONE year hand holding support for NEW STARTUPS.

For More details: http://www.vigyanashram.com

Write us on: vapabal@gmail.com or call +91-8109483130 / 9579734720


Smt.Mira Kalbag : Amma of Vigyan Ashram

March 21, 2017


Smt.Mira Kalbag : Amma of Vidnyan Ashram

Vidnyan Ashram at Pabal near Pune has been flourishing  since   1983,  working towards fulfilling its  goal, “ Education through development & development through Education.” Dr. Kalbag strongly believed the dictum “learning by doing” is the natural method of education. To introduce this natural method of learning in the prevalent education system, Dr. Kalbag established Vidnyan Ashram. Vidnyan Ashram is a laboratory of education to experiment and test this hypothesis.

Dr. Kalbag was a senior Scientist in Hindustan Lever (now Hindustan Unilever Ltd.), Mumbai, but he gave up his lucrative job and settled in a draught prone village like Pabal. He could take this bold step in his life only because of the strong and unflinching  support of his wife, Mrs. Mira Kalbag.

There is a lot of truth in what the ashram workers  quip “Dr. Kalbag looks after ‘Vidnyan’ (Science) in Vidnyan Ashram, while Amma takes care of ‘Ashram’. “

Smt. Mira Kalbag is “Amma”( mother) to all the students and workers in the Ashram. Amma came to Pabal in 1983 with Dr. Kalbag. Pabal is a small village near Pune. When they came here, there was neither facility of phone nor proper transport. Quite often Dr. Kalbag had to travel to different places for his work, but Amma seldom moved out of Pabal. She started a tailoring and stitching class for the girls in Pabal and the neighbouring villages. She trained more than 600 girls in a span of 16 years, from 1984 to 2000.  She laid stress on empowerment and personality development of these girls. Meditation, discussions and her pearls of wisdom have moulded the lives of many girls.

Amma stopped the tailoring classes after 2000 due to her age. All the same the age factor does not come in the way of her counselling the students/ workers and the women of the village. Everyone feels free to discuss their personal problems with Amma and get guidance from her. Amma extends strong moral support through ‘Vipassana’ and meditation to those who come to her to get solutions to their problems.

The kitchen in the Ashram is an ideal example of Amma’s management skill. She insists that no food should be wasted as many remain hungry in our country. Each one in the Ashram tells at the beginning of every month how much food he/she is going to consume for each meal. Accordingly only the required amount of food is cooked every day. There is a simple chart, which displays how many people are present and how much food has to be cooked. Amma has standardized everything in the kitchen, e.g. how many chapattis can be made in a given amount of flour, the oil  and ‘masalas’ to be used in vegetables etc. The uneducated kitchen ‘Maushis’ have been taught to cook as per these standards. Strict cleanliness is maintained in the kitchen. Each one is expected to wash his/her plate after eating food, the utensils are inspected for cleanliness and kept in their proper place. After washing the utensils, the waste water and scraps of food are diverted to vermi compost pit.  With these minute details, Amma had managed the working of kitchen very well. In this way, the expenses on the food cooked in the Ashram is kept under control. To affirm the positive effects of balanced diet on the health of the students, each student’s weight and haemoglobin count is recorded at the time of admission and the same is checked every three months to note the difference. There is always an improvement.

For last several years Amma has been practising Vipassana. Every day in the evening, mass meditation is practised for 15 minutes in the Ashram. This is followed by a discussion on different topics. This discussion helps the students to express their thoughts clearly and contributes in changing their attitudes positively. This is also an informal way to teach and inculcate ethics.

After the demise of Dr. Kalbag, Amma continued to stay in the Ashram steadfastly. She has stopped being actively involved in the day to day management of the Ashram. She has delegated that duty to the young workers in the Ashram and has remained in the background. She extends her valuable guidance when necessary. “Simple living and high thinking” has not just remained in the scriptures but has been proved by her exemplary behaviour, and ensured smooth transition.

Even at the age of 87, she gets up early in the morning and participates in all the chores of the Ashram enthusiastically. One should learn from Amma how to be firm but not harsh and inculcate discipline without creating resentment.

According to Hindu philosophy, a person should retire from ‘Grihasthashram’ and practise ‘Vanaprasthasram’ after a certain age. Dr. Kalbag and Amma practised this philosophy in their life and dedicated their life towards educating the youth in villages.

“Village Development through Education” is the philosophy of Vigyan Ashram and the method of education based on this philosophy is “Learning by doing” which needs to be recognised and practised generally everywhere.

With advancing age, her movement on campus got restricted, from walks to all corners to finally only her room. Also her hunched back caused difficulty in standing for long periods and later even to sit for long. Later even her meals were delivered to her room. She however continued to wash her own laundry most of the time. She exercised by walking within her room several times in a day.

During the winter of 2017, while exercising in the evening, she collapsed on the floor. It had given her a bad back. She valiantly tried to become mobile again but then after 2 days it was decided to get her to Mumbai by ambulance for recovery.

Her age and gradual declining strength hampered her faster healing. Finally on 18th March at @ 8.45am, we lost Amma.

As per her wish, her body was to be donated for medical education. This was inspired by her mother several decades earlier. Dr. Kalbag’s body was donated and now her body to was given to further the cause of hands on medical education. Due to her age her eyes or organs could not be harvested for others benefit, but she continued to be a resource for students, as in life, and beyond.

The lives of Dr. Kalbag and Mrs. Kalbag were exemplary for ‘Simple Living – High Thinking’.








Brick Picker device for Construction Site workers …..

February 7, 2017

Dear viewers ,

Very recently we have come with a very easy and effective solution for construction site workers , particularly brick picking labors. Most of the time (rather every time) bricks need to carry from one site to other / up-down to the floors. Labors carry it as head load which is very laborious / hard and risky work . It also damages bricks / increases breakage in mud bricks.

We have designed simple tool for brick pickers which help them to carry it to the distance with less load barring.

Please find attached file for details – brick-picker-costing

Those how wish to try it , can ask for design filed or  order directly from US !


Build your own Polyhouse ….. Working drawing for MS structure …

February 7, 2017

With respect to many request / comments from viewers we are re-uploading working drawings for building polyhouse structure with MS structure. Before going for actual investment we request you to please note following points –

  • These drawings are prepared by considering most common structure built near Pune area of Maharashtra state.
  • Site conditions need to taken in to consideration before starting actual erection work. (For considering wind speed / flow / site elevation / soil type etc). Its advisable to contact your nearest Krushi Vigyan Kendra / Agricultural extension center for actual corrections.
  • The cost of erection / building will vary with rates for local resources.
  • Fixing paper on polyhouse structure is skilled job – advisable to perform through experience labors.

Rangoli Making Machine: New version released

January 11, 2017

Rangoli making is a part of Indian culture to express joy and happiness by providing colors into different designs. It is creative art to draw hand drawings on the floor and fill the colors in it. Since scenario is changing now a days. Technology based approach is becoming common now. With same pace Vigyan Ashram has developed Rangoli Making Machine. This machine Save time to draw Rangoli, we can draw any design we want in rangoli no need of manual rangoli drawing skills. This reduces the human efforts with increase of diversified designs of rangoli. Miss supriya Kadam is now planning to make it commercialize product through incubation support of Vigyan Ashram.

For more details about machine write us on: vapabal@gmail.com