Introduction
Despite efforts by the government to curb farm fires, including imposing fines, the practice has not seen a significant decline in Punjab. In fact, incidents of stubble burning have increased in recent years, contributing to severe air pollution across the region, especially during the winter months. In 2023, the state recorded 119 farm fire cases in just one day. While 81 cases of stubble burning have been reported in Punjab this Kharif season (which officially starts from September 15th and runs through to November 30th) so far. This signals a persistent challenge for both the environment and the local government.
Why Farmers Resort to Stubble Burning
The key reason farmers resort to burning crop residue is the short window between the harvesting of paddy and the sowing of wheat. Since removing stubble mechanically can be time-consuming and costly, many farmers have no option but to set fire to the remaining straw to prepare the fields quickly for the next crop. Despite the government’s initiatives to ban stubble burning and impose penalties ranging from ₹2,500 to ₹15,000 per incident, enforcement has remained weak.
Farm unions, too, have opposed the punitive measures. They were arguing that unless a financially viable solution is provided, farmers are left with no option but to continue burning stubble. In the absence of effective alternatives, this practice remains a deeply rooted issue that impacts both the agricultural community and the environment.
Environmental Impact of Farm Fires
The environmental consequences of stubble burning are dire. It contributes significantly to air pollution, releasing harmful gases like carbon dioxide, methane, and particulate matter into the atmosphere. This not only deteriorates air quality but also leads to smog formation, particularly in Delhi and neighbouring regions. In addition, stubble burning depletes the soil of essential nutrients, making land less fertile over time. Despite efforts to curb it, 36,000 incidents of stubble burning reported last year in Punjab.
The Promise of 2G Ethanol: A Sustainable Solution
One promising solution to the problem of stubble burning lies in the production of 2G ethanol, a biofuel produced from agricultural residues, including rice straw. This second-generation ethanol technology could help address both environmental and economic challenges by converting crop waste into clean energy.
Khaitan Bio Energy is one company that is pioneering this approach, utilizing 2G ethanol technology to convert rice straw—a key crop residue in Punjab—into ethanol. This technology offers a dual advantage: it provides farmers with a financially viable alternative to burning stubble while contributing to India’s renewable energy goals.
How 2G Ethanol Works
2G ethanol, unlike its first-generation counterpart (produced from food crops like sugarcane or corn), is derived from non-food biomass, such as agricultural waste and crop residues. Khaitan BioEnergy’s 2G ethanol technology uses rice straw as the primary raw material, which is abundantly available in Punjab due to extensive paddy farming. The process involves breaking down the lignocellulosic components of the rice straw into fermentable sugars. This are then undergo convertion into ethanol through microbial fermentation.
This waste-to-energy approach not only reduces the environmental burden of stubble burning but also creates an additional revenue stream for farmers. By selling their crop residues to ethanol plants, farmers can offset their operational costs and contribute to the circular economy.
Benefits of 2G Ethanol
Reduction in Air Pollution:
2G ethanol production directly addresses the issue of air pollution caused by farm fires. By converting rice straw into biofuel, the harmful emissions associated with burning crop residue are eliminated.
Economic Opportunities for Farmers:
The sale of rice straw to bioenergy plants offers farmers an economic incentive to stop burning their crop residues. This provides a sustainable income while also contributing to a greener environment.
Energy Security and Renewable Energy:
2G ethanol is a renewable energy source that can help India reduce its dependence on fossil fuels. It also aligns with the country’s goals of achieving 20% ethanol blending by 2025 under the National Biofuel Policy.
Soil Health Preservation:
By preventing the burning of stubble, 2G ethanol helps maintain soil fertility. Burning depletes essential nutrients from the soil, which can reduce crop yields over time.
Challenges in Implementation
While 2G ethanol offers a promising solution, scaling up its production and adoption requires significant investment in infrastructure, technology, and logistics. There is also a need for government support in the form of incentives and subsidies to encourage farmers to shift from traditional stubble-burning practices to more sustainable alternatives.
Additionally, raising awareness among farmers about the environmental and economic benefits of 2G ethanol is crucial for widespread adoption. Although 27% fewer incidents of farm fires were reported in 2023 compared to 2022, the problem persists, highlighting the need for more robust solutions.
Conclusion: A Path Forward with 2G Ethanol
Farm fires in Punjab remain a pressing environmental issue, exacerbated by the short harvesting window and limited financially viable alternatives for farmers. However, the emergence of 2G ethanol technology, such as that pioneered by Khaitan Bio Energy, provides a sustainable solution. By converting crop residues like rice straw into biofuels, 2G ethanol addresses both the environmental harm caused by stubble burning and the economic challenges faced by farmers.
The path to a sustainable future requires collaboration between the government, industry, and the farming community. With the right incentives and investment in 2G ethanol production, Punjab could see a significant reduction in farm fires, leading to cleaner air, healthier soil, and a greener energy future.