Essays about: "petroleum"

Showing result 11 - 15 of 191 essays containing the word petroleum.

  1. 11. Production of polymers from a papermills wastewater using HTC substrate. : Investigating the viability of using wastewater sludge from Skoghalls’ papermill in combination with filtrate from HTC of sewage sludge to produce biological plastic producing polymers.

    University essay from Karlstads universitet/Avdelningen för energi-, miljö- och byggteknik

    Author : Regan George; [2023]
    Keywords : PHA; HTC-substrate; Polymer;

    Abstract : Since their conception, plastics have been a dominant product due to the versatility of use, and readily available raw materials. However, the production and consumption of synthetic plastics have continued to increase over the years, leading to a significant rise in plastic waste and its associated environmental impacts, such as the detrimental effects plastic waste has on ecosystems, including the presence of toxic microplastics and risks to marine life, are becoming the focus of criticism. READ MORE

  3. 12. Modified cellulose synthesized by different deep eutectic solvents as an additive in paper making process

    University essay from Karlstads universitet

    Author : Shiniar Said Saleh; [2023]
    Keywords : green chemistry; dry strength additives; deep eutectic solvents; sodium periodate oxidation; charge density; dewatering; mechanical strength.;

    Abstract : The environmental concerns that come with the currently used traditional papermaking process where petroleum-based additives are used, has tempted researchers to study “green” additives by introducing environmentally friendly modifications of cellulose as an additive in the papermaking process. This thesis will spin further on that by producing additives with different charge densities and focus on to incorporate an etherification reaction into potentially greens systems based on non-toxic and readily biodegradable deep eutectic solvent (DES). READ MORE

  4. 13. The Janus Face of Petroleum: Norway, Venezuela and Petrostate-led Development

    University essay from Stockholms universitet/Romanska och klassiska institutionen

    Author : Santiago Benavides García; [2023]
    Keywords : Petroleum; Petrostate; State intervention; economic development; political context; Transnational Oil Companies; natural resource trap; corporate independence; natural resource management.;

    Abstract : This paper examines the strategic management of natural resources in Venezuela and Norway,focusing on the role of the State in the petroleum industry and its implications for economicdevelopment. In Venezuela, the national oil company PDVSA experienced increased stateintervention, leading to a dependence on petroleum revenues and limited diversification. READ MORE

  5. 14. Understanding the Norwegian Petroleum Industry: How does Oil explain Norwegian Public Expenditure and Social Spending? How vulnerable is it to shocks?

    University essay from Lunds universitet/Ekonomisk-historiska institutionen

    Author : Ignacio Ruesta Boceta; [2023]
    Keywords : Norway; Social Public Spending; Oil Exports; VEC; Impulse Response; External vulnerabilities; Business and Economics;

    Abstract : There are few people who deny that Norway's social welfare was achieved after Oil Discoveries. But there is concern about the sustainability of the Norwegian economy regarding the volatility of the Oil market. READ MORE

  6. 15. Nanoscale characterisation of model Ni-Mo catalyst active phases

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Jonas Elmroth Nordlander; [2022]
    Keywords : Ni-Mo catalysts; Hydrodeoxygenation; TEM; PXRD; Materials chemistry; Chemistry;

    Abstract : An important stepping stone in transitioning from a fossil-fuel based transportation system is the production of bio-fuels such as bio-oils. For bio-oils to be commercially viable, catalytic upgrading via hydrodeoxygenation is required, typically using Ni-Mo oxide or sulfide catalysts. READ MORE