BioBiz, a division of EAI, is a leading market intelligence & strategic consulting firm for the Indian bio-based sectors.
The growing RNG market is marked by several technology solution providers who have contributed to the development of the conventional anaerobic digestion technology.
Following is the list of major technology providers met by EAI team and their views on RNG production.
- Kankyo Cleantech
- Organic Recycling Systems
- Primove Engineering
- GPS Renewables
- SLPP Re-New LLP
- Quantum Green
- Ahuja Engineering
- FOV Biogas
- Carbon Masters
- Atmos Power
- Radix Lifespaces
Following table analyses the views of technology providers for RNG production on various parameters.
|Parameters||B-Sustain||Kankyo Cleantech||Organic Recycling Systems||Primove Engineering||GPS Renewables||SLPP||Quantum Green||Ahuja Engineering||FOV Biogas||Atmos Power||Carbon Masters||Radix Lifespaces|
|Types of technologies||Fixed type digesters||
||Modular plants based on feedstock||CSTR technology with rotor blades||Pre-fabricated biogas plants||Modular, CSTR technologies||Fixed dome, CSTR type||Plug and play biodigesters||CSTR based dry fermentation and plug flow type wet digesters||They offer solutions for biogas purification||Plug and play digester models||FRP based technology|
|Extent of maturity of technology like cellulosic and syngas based digestion||No data||No data||No data||No pre-treatment||No data||No pre-treatment||No pre-treatment||No data||Use of fabric based digesters having an advantage over concrete or steel digesters||No data||No data||No data|
|Capital costs for co-digestion and agro waste based plants||Rs. 15 crores for normal 100 TPD plant||50 TPD paddy straw – Rs. 25 crores||2 TPD biogas plants – Rs. 60 lakhs||Rs. 20 crore – 5 TPD – agro waste / 30-32 crore for 10 TPD||1 TPD – Rs. 41 lakhs – normal biogas plant, upgradation unit higher||250 tons – 30-35 crores||Rs. 15 crores for a 100 TPD plant||Rs. 40 lakhs for 2 TPD plants||Rs. 1 crore for 10 TPD plant||Rs. 15 crore for 100 TPD plants||Rs. 10-12 crores for a 50 TPD plant||No data|
|Area requirement||150 m2 – 2 TPD||5 acres for 100 TPD agrowaste||500 m2 for 5 TPD plant||3 acres – all except storage||2 TPD plant – 150 m2||250 ton – 7 acres – 10 acres||50 TPD – 1.5 acres including storage||No data||0.4 acres for a 10 TPD plant||No data||No data||1 acre plant area for a 40 TPD plant|
|Operational costs||No data||High for 2 compressors||No data||Rs. 30 / kg of RNG||No data||Cost of Power – Rs. 6-8 / kg of RNG||Power – Rs. 8-9 / kg RNGOperational cost – Rs. 22-25 incl. capex amortizationConversion cost – Rs. 15-16||No data||No data||No data||No data||No data|
|Pre-treatment techniques||No data||Novel semi-aerobic hydrolysis technology||No data||No pre-treatment||No data||No pre-treatment||No pre-treatment||No data||No data||Hydrolysis for agro waste||No data||No data|
|Minimum scales of operation||· 2 tons per day· Economically viable – 20 TPD||No data||15 TPD||5 TPD – agrowaste||No data||20 TPD||25 TPD||300 kg / day||No data||No data||50 TPD – economically viable||No data|
|Feedstock flexibility||Any feedstock can be used – agro, food, dairy||· Agro waste· Mixed feedstock||Both starch and cellulose||Agrowaste||Not for cellulosic waste and garden wastesNo co-digestion||All organic wastes||Mainly food and industrial waste||All organic wastes||All organic wastes for dry type digesters and fabric based not suitable for food waste alone||No data||All organic wastes||All organic wastes|
|Avenues to increase product yield||No data||Membrane type purification technologies||No data||Innovative technology (bacteria)||No data||Hollow fibre membrane, co-digestion||Co-digestion||No data||No data||No data||No data||No data|
Inferences on technology evaluation
- Technology: Modular, plug and play digester models are ideal for a large scale RNG plant
- Extent of maturity: While technically complex pre-treatment methods such as enzymatic is critical for suitability of lignocellulosic feedstock use in anaerobic digester, recent innovations by technology providers have eliminated these complex pre-treatment steps by introducing novel bacteria and simple hydrolysis techniques
- Capital cost: The capital cost for setting up a co-digestion based RNG plant could be approximately Rs. 15 crores, while for an agro waste based plant, it could cost around Rs. 23-25 crores.
- Operational cost: Conversion costs (power + consumables + labour) is in the range of Rs. 15-17/kg of RNG. Of the total conversion costs, 35-40% goes in the production of RNG, while the rest goes for biogas production. About Rs. 7-9/kg RNG goes for power generation. Compression process is found to consume the maximum amount of electricity. Total power requirement for a 100 TPD plant is 78000 kWh/day, with a connected load of 300 kVA.
- Area requirement: Area required for setting up a 100 TPD co-digestion RNG plant comes to about 3 acres while for plants using increased quantities of agrowaste and press mud, it could come to about 4-5 acres owing to feedstock storage requirements.
- Minimum scale of operation: For better return on investment, the minimum scale of plant should be in the range of 15-25 TPD
- Feedstock flexibility: Most of the commercially available technologies are flexible for any type of feedstock – starch and cellulosic and hence mixed feedstock could be suitable for better yield compared to 100% starch or cellulosic feedstock
- Manpower requirement: Most of the currently available technologies are automated and hence require only about 3-4 people – 1 shift operator, 2 tractor drivers, 1 microbiologist
- Avenues to increase yield: Use of novel purification technologies such as membrane type purification, innovative microbes and mixed feedstock could be some of the possible avenues to increase RNG yield
In addition to the above technology providers, IOC is also developing a patented 2-stage anaerobic digestion technology to use agro waste as the primary feedstock for RNG production. IOC claims that the yield of methane comes to about 85% before purification, while it is only 55-60% in other technologies. Details on IOC technology are given.
IOCL biomethanation technology
Developed two stage biomethanation process for conversion of kitchen waste to biogas
- In the first stage biodegradable organic fraction present in waste gets extracted into liquid form
- In second stage organic matter present in liquid is converted into biogas in the presence of high performance bacterial inoculum
Figure: IOCL biomethanation technology
Typical composition of biogas generated
Know more on how BioBiz can assist your business in your strategy for the bio-based businesses, Here
Categories: Bio-CNG production process, Technology Vendors
About EAI and BioBiz for Bio-CNG
BioBiz for bio-CNG, EAI's specialized consulting division for bio-CNG, provides assistance in market research, strategy consulting, technology vendor/supplier finder assistance and more for the complete bio-CNG value chain – feedstock sourcing, logistics, pre-processing techniques, anaerobic digestion, biogas scrubbing, biogas upgradation, end user markets for bio-CNG and digestate, and more. Send a note to firstname.lastname@example.org if you wish to take BioBiz’s assistance for the Indian bio-CNG market.
About EAI & EV Next
EV Next, EAI's specialized consulting division, provides assistance in market research, strategy consulting, technology vendor/supplier finder assistance and more for the complete EV value chain - Li-ion & Lead Acid Battery Cells & Battery Packs, BMS, Battery Manufacturing equipment, EV charging station, battery swapping station, Li-ion & Lead Acid battery recycling, and for a range of electric vehicles - e-bikes, electric bicycles, electric scooters, electric motorbikes, electric autos, e-autos, e-rickshaws, electric trucks, electric LCVs, electric buses and more. Send a note to email@example.com if you wish to take EV Next assistance for the Indian electric vehicle market.