Extraction and Separation of Oxyresveratrol Technology
The product has strong antiglycation and antioxidant activities. It can be used as vermifuge for treatment of tape-worm infestation.


The solvent used for extraction of oxyresveratrol from natural plant is a green solvent. Extractant comes out from the membrane cell can be reused, no generation of toxic chemicals in the process, process is cost effective. Usability of the membrane is up to 15 batch. The process gives 10 g pure product (cost US$ 110.8 = Rs. 6868/-) from 100 g raw material (cost Rs 500/-). The cost is » 14 times greater than raw material cost. The compound has great impact in world market of drug and pharmaceuticals, phytochemicals and Fine chemicals industries. The cost of 99% pure compound is US$ 9980 per kg (Rs. 6.19Lakhs). The cost of crude extract is US$ 10-100 per kg.
Coal beneficiation (de-sulfurization and de-ashing) by using low energy ultrasonication
The low ultrasonic energy (20-40 KHz) was satisfactorily used to clean some low rank medium to high sulfur coal samples from northeast India in lab-scale level and the scale-up studies are ongoing in CSIR-NEIST.

Agglomeration of low rank Northeast Indian coal fines with an organic binder for industrial coke-making (Non-recovery type coke oven for NER coals: low S and C-emission)
Approximately 13% (over 1 billion tonnes) of total coal production is currently used by the Steel industry and around 70% of total global steel production is dependent on coal.

Northeast Indian coal-derived Humic acid (HA) and their Fe3O4-nanocomposites for catalytic application
The inferior grade coal fines and coal waste could be recovered by isolating Humic acid. The possibility of isolating Humic acid from the inferior coal and coal wastes from Northeast Indian coals is established in this institute.

Coal-derived Carbon Nano-materials (CNMs) by wet-chemical/thermo-chemical methods
The formation of carbon nano-balls and nano-tubes in the clean coal products during wet-chemical as well as thermo-chemical techniques was established by using Scanning Electron Microscopy (SEM),

Site specific management of acid mine drainage (AMD) from NER coal mines
With need of the management of AMD in Northeast coalfields, CSIR-NEIST (Jorhat) had developed a site-specific AMD management plant using locally available materials.

AMD treatment process/technology of CSIR-NEIST (Jorhat):
- Site specific.
- Sequential Alkalinity Leaching Process.
- Scaled up to the pilot plant scale (~500kg/batch).
- Raw materials used are indigenous.
- Less energy consumption.
- Advantage of the process are:
- Does not require electricity.
- Does not require mechanical equipment, hardness chemicals, or buildings.
- Does not require daily operation and maintenance.
- More natural and aesthetic in their appearance and may support plants and wildlife.
- Are less expensive
Coal-derived blue-fluorescence emitting Carbon Dots (CDTs)
CSIR-NEIST developed a process for the preparation of blue-fluorescence emitting carbon dots (CDTs) from sub-bituminous tertiary high sulfur Indian coals.

High Strength Proppants
Scientists of the North East Institute of Science and Technology (NEIST) have patented an innovative and economical technology

As far as the Indian oil and gas sector is concerned, the knowhow developed in the process of this innovation is the first of its kind in the country.
Ex-Director of CSIR-NEIST, Dr P G Rao, said the development of the process for high strength proppants, used in the extraction of trapped gas and oil from the tertiary layer, will be extremely cost-effective and advantageous for the industry as it uses bauxite, a mineral abundantly available in India.
“As India has abundant high-grade bauxite deposits, the innovation can make the country self-sufficient, and help it take a lead position inthe manufacture of high strength proppants, cutting down on imports.
Oil production activity in the country can be expected to increase manifold in the coming years, vis-à-vis its increased demand.
“The innovation has both a huge market potential, as well as the added advantage of generating more employment avenues,” Rao said.
Explaining the process, Dilip Dutta, former head of general engineering department, CSIR-NEIST, and one of the scientists associated with the innovation, said a “proppant” was a particle baked to such hardness that it could crack the rocky crust of the underground reservoir and release oil and gas.
“The particles are bombarded into the earth crust at the tertiary level with a very strong water jet and this allows for greater recovery of oil and gas after the crust is broken,” Dutta said.
Dutta was responsible for designing the device in which the 2mm bauxite balls (proppants) were made to almost 97 per cent roundness.