PIB News 4th Sep, 2020


(General Studies-III: Technology, Economic Development, Bio diversity, Environment, Security and Disaster Management, Science and Technology- developments and their applications and effects in everyday life.)

CSIR-CMERI develops Affordable Solar Powered Battery based Sprayers to tackle Water Crisis in Agriculture

Water is a precious resource and water scarcity is looming large over the entire Nation. Agriculture, which consumes around 70% of Water, for irrigation purpose, is the most vulnerable sector of the Economy owing to this crisis. To address this issue there has been discussion on implementing solar pump in almost every farmland.

Apart from solar pumps, CSIR-CMERI isworking on methods to reduce water consumption required for irrigation. Initially, Drip irrigation was considered but later it was realised that Drip irrigation is not affordable for marginal to small farmers, who are the major stake holders in Indian Agrarian scenario. Those farmers use manual sprayers costing a few thousand rupees.

As per the available knowledge, pesticides play very big role in increasing crop productivity, but large amount of pesticide sprays is wasted due to lack of appropriate machinery, and soil, water and air become polluted. Due to such harmful effects of pesticides, there is an increasing pressure to reduce their use and make their spraying more efficient. To make efficient sprayer, there is need to understand science of surface tension, viscosity, wettability, air drag, dynamic pressure, particle size, etc. CSIR-CMERI developed two variants of battery operated spray systems one for “marginal famers” and other for “small farmers”. Back Pack Sprayer, having capacity of 5 litres, is made for “marginal farmers”, while the Compact Trolley Sprayer having capacity of 10 litres, is made for “small farmers”. These sprayers are equipped with two separate tanks, flow control and pressure regulator to handle different water requirements of the crops, target/site specific irrigation, maintaining appropriate dilution of pesticide/fungicide to control the pest (on foliage, under the leaves, at root zone etc.), creating water based micro-roughness of leaf surface, maintaining soil moisture levels in a narrow range, and weed control. The systems functions on Solar-Powered batteries, thus enabling its usage even in energy and power deprived agricultural regions of the Nation, thus reducing dependence on price volatile fossil fuels. The sprayers are simple to develop, easy to learn and implement, therefore will help to overcome water crisis faced by Indian farmers.

The flow control feature of the Sprayers helps achieve multiple levels of Water/Pesticide flow thereby enhancing the flexibility and dynamicity of the coverage area as well as the intensity of the application. The Dual-Chamber design of the Sprayers helps achieve a degree of resource versatility as it allows the system to carry two variants of liquids at any particular instant. As per experiments conducted at CSIR-CMERI, the engaged farmers have informed that it helps save 75% of Water and 25% time-consumption while using the CSIR-CMERI developed sprayers. This design element might also help reduce the time consumption for Spray based Agricultural applications, as the farmer need not empty the contents of a single vessel completely before using a different content.

Prof. (Dr.) Harish Hirani, Director, CSIR-CMERI, elaborated, “These couple of variants can bring about a revolution in the sphere of Precision Agriculture by reducing usage of Water in Agriculture. This revolutionary technology will help in creating agricultural avenues even in arid and semi-arid regions, as the Water scarcity will no longer be feared by the farming community. The CSIR-CMERI developed sprayers provide a cost-effective socio-economic solution for both marginalised and small-scale farmers. The affordable pricing profile helps to provide opportunities to cottage and micro-industries in furthering the outreach factor of the technology widely.”

CSIR-CMERI has already developed solar tree of capacity 1 Kwp, 3 kwp, 5 kwp, 6 kwp, 7.5 kwp and 11.5 kwp,(which is now the Largest Solar Tree in the world).





Back Pack Sprayer

Compact Trolley Sprayer

Overall Dimension

H 300mm W220mm  B 120mm

H 650mm W400mm  B 200mm



23 kg

No of Container



Each Container Capacity



Battery life

4 to 5 hr

4 to 5 hr

Nozzle spray angle

80 degree

80 degree

Sprayer distance

1 to 1.5 m

1 to 1.5 m

Max. Flow Rate



Key Features

Flow regulator, Easy Switching option for tank, Extenable hose up to 12feet, Easy Handling

Flow regulator, Easy Switching option for tank, Extenable hose up to 12feet, Easy Handling


(General Studies-III: Technology, Economic Development, Bio diversity, Environment, Security and Disaster Management, Science and Technology- developments and their applications and effects in everyday life.)

Portable Sterilization unit using new hybrid sterilization technology can decontaminate PPEs rapidly

Scientists have developed a portable sterilization unit using a new technology called the hybrid sterilization system that can decontaminate personal protective equipment (PPE) necessary for combating COVID 19, easily and rapidly, allowing them to be used multiple times.

It can be used by health professionals and other COVID warriors for whom PPEs are essential and can prevent generation of hazardous solid waste from PPEs.

IIT Tirupati (IITT) and IISER Tirupati have jointly developed the Portable Optical Cavity

Sterilization Unit (POSCU) to provide efficient and rapid decontamination of personal protective equipment (PPE) and other household items. A working point-of-use sterilization unit has been developed with the support of Science and Engineering Research Board (SERB), a statutory body under the Department of Science and Technology (DST).

UV radiation is a proven method for sterilization. However, the lower penetration depth of UV-C and faster divergence from the source can result in nonuniform treatment. The team consisting of Dr. Reetesh Kumar Gangwar (Asst. Prof., Physics), Dr. Arijit Sharma (Asst. Prof.,  Physics), and Dr. Shihabudheen M. Maliyekkal (Asst. Prof., Civil & Environmental Engineering) from IITT have developed this hybrid sterilization system consisting of a UV radiation cavity, cold plasma, and H2O2 spray.

Unlike the traditional UV systems, this unit follows the optical cavity concept to optimize the use of photon flux in the treatment area. The system confines the UV radiation and enhances photon-flux and sterilization efficacy. The coherent operation of UV-C, cold plasma, and H2O2 spray further strengthens the sterilization efficiency due to more hydroxyl radical production.

Dr. VasudharaniDevanathan from IISER Tirupati will assist the IITT team in evaluating the sterilizing efficiency of the portable unit. Dr. R. Jyaprada (MD Microbiology), SVIMS hospital, Tirupati, will also test the system's effectiveness in the SVIMS microbiology laboratory.

The team is currently optimizing the design parameters, including UV dose, plasma, and H2O2 concentration, to get the optimum sterilization performance in short contact time of less than 2 min. Due to the non-thermal nature of the treatment, the proposed unit shall also find application in the sterilization of other items such as packed and unpacked food, currency, and other household items.


(General Studies-III: Technology, Economic Development, Bio diversity, Environment, Security and Disaster Management, Science and Technology- developments and their applications and effects in everyday life.)

Canister bag that solidifies infectious secretions like COVID 19can save health workers from exposure during handling
Infectious secretions from contagious diseases such as COVID 19, tuberculosis (TB), and influenza poses high risk for healthcare workers. Their exposure to the high-risk hazard while handling the waste can soon be controlled with a canister bag that solidifies the secretions rapidly, making disposal safer.

For the safe management of infected respiratory secretions, the researchers at Sree Chitra Tirunal Institute for Medical Sciences and Technology (SCTIMST), an autonomous institute under the Department of Science and Technology, Govt of India, have come up with a method for safe handling and disposal of respiratory secretions in hospitals for ICU patients or those with copious respiratory secretions treated in the wards. They have developed canister bags lined with super-absorbent material containing an effective disinfectant, named “AcryloSorb”.

When the patient is admitted to the hospital, secretions are sucked into bottles or canisters using vacuum line and discarded through the waste fluid disposal system after subjecting to decontamination process. There is a high risk of contamination during the handling, and the disposal needs well-equipped sluice rooms with disinfection facilities. The safety threat and manpower issues will be manifold in less equipped hospitals or temporary isolation wards set up during pandemics.

The canister bags can absorb 500 ml of secretions and solidify it immediately. In addition to that, the whole system will be decontaminated within no time because of the presence of disinfectant. The liner structure has a patented design which allows the progressive absorbent availability upwards. Solidification and immediate disinfection that occurs inside these bags eliminate risk of secondary infections by avoiding spilling and aerosol formation, and thereby protect healthcare workers and promote safe workplace management.Canister bags are enclosed in a customizable sealer bag which can pack it as spill-proof decontaminated biomedical waste disposable through incineration. The product has been tested as per the international standards.

The SCTIMST team that realized this technology consists of biomaterial scientists and clinicians - Dr. Manju, S., Dr. ManojKomath, Dr. Asha Kishore, Dr. Ajay Prasad Hrishi. The know-how of the AcryloSorb suction canister liner (CL Series) bags has been transferred to Romsons Scientific and Surgical Pvt. Ltd for manufacture and immediate marketing. The approximate cost will be Rs. 100/- for each canister liner bag.

Romsons Scientific & Surgical Pvt. Ltd, located at Uttar Pradesh, is a global player in medical devices with more than 200 products in market. The company has proven expertise of half a century in the area of disposable medical and surgical devices and is a prominent brand in the medical device community. The company has its distribution channel across 65 countries. Quality is a prime motto of Romsons, evidenced by the ISO and CE certifications for many of their products.

The field trials of the in-house designed suction canister liner bags are being conducted in SCTIMST.




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