An effective utilization of agricultural waste as an energy source for decentralised power generation and thermal applications can meet the increasing energy demand in rural areas. A substantial number of thermo-chemical conversion systems are used for this purpose; nevertheless, it is significant to improve their efficiency to widen the implementation of this technology for various applications. Groundnut shell is one of the popular agricultural wastes available in many countries like India. Due to its low bulk density and physical nature co-gasification of this feedstock with another biomass is not popular. However, a high carbonaceous powdery biomass like Spent Tea Waste (STW), a waste after brew tea can be suitably mixed with groundnut shell along with some moisture to accomplish this task. To prove this strategy an experimental study has been conducted at various combinations of these two types of biomass as feedstock in a 115 kW_th semi-industrial type gasifier, and its performance parameters are studied for possible operating conditions of the gasifier. The observations show that the wet STW can maintain a uniform consistency, when mixing both the biomasses until its composition is 40% of the blend. The results show that the increase in hydrogen composition, calorific value and cold gas efficiency is in the ranges of 9.9–21.5%, 4.1–10.4% and 3.9–9.9% respectively as compared to groundnut shell. Besides, the maximum calorific value of producer gas is 6.68 MJ m⁻³.

有效利用农业废弃物作为分散发电和热力应用的能源，可以满足农村地区不断增长的能源需求。为此目的使用了大量的热化学转化系统。但是，提高其效率以扩展该技术在各种应用中的实现意义重大。花生壳是印度等许多国家/地区流行的农业废料之一。由于其低的堆积密度和物理性质，这种原料与另一种生物质的共气化并不普遍。但是，可以将诸如废茶废料（STW）这样的高碳质粉状生物质，冲泡茶后的废料与花生壳以及一些水分适当混合，以完成此任务。_第一半工业型气化炉，并针对气化炉可能的运行条件研究了其性能参数。观察结果表明，当将两种生物质混合直至其组成占混合物的40％时，湿式STW可以保持均匀的稠度。结果表明，与花生壳相比，氢成分，热值和冷气效率的增加分别在9.9–21.5％，4.1–10.4％和3.9–9.9％的范围内。此外，产生气的最大热值为6.68MJ m ^-3。