Essays about: "Partial Substitution"

Showing result 1 - 5 of 8 essays containing the words Partial Substitution.

  1. 1. Use of Polyvinyl chloride (PVC) as an aggregate for concrete

    University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Author : Habib Loubani; [2023]
    Keywords : Polyvinyl chloride; PVC aggregates; natural aggregate concrete; PVC fine aggregates concrete; PVC coarse aggregates concrete;

    Abstract : This study investigates the use of polyvinyl chloride (PVC) as a partial substitute of natural aggregates in concrete as fine and coarse aggregates. Concrete was prepared by replacing natural aggregates with equal volume of grinded PVC, with volume replacement ratio as 10%, 50% for fine and then 10% and 50% for coarse aggregates. READ MORE

  3. 2. Biochar and hemp as peat substitutes in organic growing media : effects on nutrient availability and nutrient uptake

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Malin Nilsson; [2022]
    Keywords : Growing media; substrate; biochar; hemp; peat substitution; nutrient availability; nutrient use efficiency;

    Abstract : This study aimed at evaluating the suitability of biochar and hemp as partial or complete replacement of peat in horticultural growing media, with specific emphasis on the effects on nutrient availability and plant nutrient uptake. The study was motivated by the environmental concerns surrounding the use of peat, along with a desire to explore possible uses for biochar and a crop residue from hemp cultivation. READ MORE

  4. 3. Assessment of calculation methods for Primary Energy Factors : Case Study of Swedish electricity mix

    University essay from Högskolan i Gävle/Energisystem och byggnadsteknik

    Author : Javier Ferrero Andrés; [2022]
    Keywords : Primary Energy; Primary Energy Factor; Calculation methods; Partial Substitution; Exergy; Physical Energy Content;

    Abstract : The use of the concept of "primary energy" is present in all types of regulations at both European and national level, so that all aspects related to the reduction of energy use and energy efficiency measures speak in terms of primary energy and Primary Energy Factors, necessary for its conversion. The existing consensus on the use of the term is not such in terms of the methodology for calculating the Primary Energy Factors to be adopted, which is the reason for the search for a methodology that acquires the status of global and standard. READ MORE

  5. 4. Textile paper as a circular material

    University essay from KTH/Industriell ekologi

    Author : Archana Ashok; [2017]
    Keywords : Circular economy; paper; textile; recycling; fibre; packaging; value chain; life cycle assessment; LCA; techno-economic assessment; TEA; eco-design; circular material; industrial symbiosis;

    Abstract : Increasing resource efficiency by utilising secondary raw material is one of the key characteristics of a circular economy. Textile dust fibre, a waste generated from textile mechanical recycling has the prospect to be utilised as secondary raw material for producing novel material: textile paper suitable for packaging and other applications. READ MORE

  6. 5. Sensitivity analysis of cotton trade liberalization: a global simulation model approach

    University essay from SLU/Dept. of Economics

    Author : Kim Thanh Do; [2013]
    Keywords : Armington; elasticities; cotton; partial; equilibrium; model;

    Abstract : Despite global efforts to reduce international trade barriers in order to enhance trade liberalization and establish a more fair competition environment with generally accepted standards, agricultural trade is still regarded as a distorted area, where subsidies are particularly abused by some countries with an aim to create unfair advantage for their goods in the world market. The cotton sector is one of the typical examples for the abuse of subsidies in international trade by titling the playing arena against developing countries. READ MORE