Conversion of spent coffee grounds into biochar using a sustainable solar assisted biomass torrefaction technique

Coffee farmers and producers in Kerala (India) face a serious obstacle in their pursuit of a self-sustaining coffee processing technology and fuel deficiency. Research indicates that coffee, as one of the largest industries, generates a huge amount of waste, namely Spent Coffee Grounds (SCGs). This study aims to evaluate the feasibility and...

Design of a small-scale alkaline electrolyser for large-scale production

This thesis tackles the designing of a small-scale alkaline electrolysis cells (AEC) unit for large-scale production. This apparatus is applied for the production of pressurised hydrogen by employing solar energy. The goal is to minimise production costs while ensuring the safety of the unit operation throughout its lifespan. Although the...

Comparing one and two-dimensional hydraulic modelling of flow on varying spatial scales: Identifying the physical processes that are of influence to the modelling choice of a stream system

In the past years, climate change has caused an increasing number of extreme weather events. In the Netherlands this is, for instance, reflected by the growing amount of extreme rainfall events. This creates big issues for water management authorities like water boards. Water boards are often responsible for local streams, that cannot handle the...

Experimental Characterization of a Novel Small-Scale Natural Circulation Loop Methanol Synthesis Reactor

The present-day industrialized nations reached high standards of living using cheap fossil fuel energy. The high CO<sub style="color: rgb(0, 0, 0); font-family: &quot;Lucida Grande&quot;, &quot;Lucida Sans Unicode&quot;, sans-serif;">2</sub> emissions as a result of burning these fuels over the years have started outpacing the natural carbon...

Feasibility study hyropower plant Vila Volta, Brazil

A remote guesthouse in the Brazilian province of Rio de janeiro is using electricity from the nuclear fed power grid. The owner would like to change the energy supply from nuclear to hydropower if a hydropower plant would produce enough energy to keep the guesthouse running. A small hydropower plant could possibly produce enough energy for the...