Impact of tumbling on production of biomethane from household waste.

This study utilized nine anaerobic digesters (ADs) with individual capacities of 10 l to investigate methane (CH) gas generation from various waste combinations and operating conditions, employing both non-tumbling and tumbling processes with the aid of the Taguchi method. The experimentation encompassed different varieties of fruit waste (FW), raw vegetable waste (RVW), and mixed cooked waste (MCW) at varying proportions (1:1, 1:1.5, and 1:2) and temperatures (35 °C, 40 °C, and 45 °C), along with multiple feed inputs.

Zone-wise biogas potential in India: fundamentals, challenges, and policy considerations.

The current manuscript focuses on the advancements made in establishing zone-based biogas plants in India from 1990 to the present. India generates various types of waste from agricultural, industrial, and human activities. Several methods are available to manage and derive energy from these waste materials, such as incineration, gasification, and anaerobic digestion (AD).

Optimum techno-eco performance requisites for vacuum annulus tube collector-assisted double-slope solar desaltification unit integrated modified parabolic concentrator.

This work presents a novel approach for a double-slope solar desaltification system having parallel array of evacuated annular tube collectors with compound parabolic modified concentrators (DS-SDS-EATC-MCPC) that are observed for eco-design requisites for the optimum performance with environ-economic viabilities. The proposed scheme has been configured to obtain the utmost probable basin's medium hotness as 99.6 °C of having greater depth of water (0.

Emissions from homogeneous charge compression ignition (HCCI) engine using different fuels: a review.

The main objective of this paper is to review the emission characteristics of homogeneous charge compression ignition (HCCI) engines using different fuels and additives. Additionally, the impacts of various operating conditions on HCCI engine emissions are also analyzed. There is a demand faced by the engine and car manufacturers for high fuel efficiency and low emission from both consumers and the government.