Essays about: "marine biomass"

Showing result 1 - 5 of 15 essays containing the words marine biomass.

  1. 1. 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. 2. Methane Sulphonic Acid in East Antarctic Coastal Firn and Ice Cores and Its Relationship with Chlorophyll-a and Sea Ice Extent in the Southern Ocean

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Emma Nilsson; [2022]
    Keywords : methane sulphonic acid; firn cores; sea ice proxy; marine primary productivity; Fimbul Ice Shelf; Dronning Maud Land; metansulfonsyra; firnkärnor; havsis-proxy; marin primärproduktion; Fimbulisen; Dronning Maud Land;

    Abstract : The seasonal retreat of sea ice in the austral spring and summer around Antarctica has a significant effect on phytoplankton activity, mainly due to light availability, meltwater input of dissolved iron, and surface water stratification. Phytoplankton produce dimethylsulfoniopropionate, the precursor to the climate-cooling gas dimethyl sulphide, which is ventilated to the atmosphere and oxidised to methane sulphonic acid (MSA). READ MORE

  4. 3. Impact from Sargassum macroalgae on energy content in biogas, Grenada

    University essay from KTH/Skolan för industriell teknik och management (ITM)

    Author : Alexander Klimkowicz Nordin; Elin Svensson; [2022]
    Keywords : ;

    Abstract : This study is part of the Minor Field Studies programme and includes a project carried out in Grenada in the spring of 2022. Grenada is one of several countries affected by the huge amounts of Sargassum macroalgae that has infested marine areas and coasts in the last decade. This has resulted in environmental, social and economic problems. READ MORE

  5. 4. Quantifying the state of the coral reef ecosystem in relation to biophysical benthic and pelagic indicators and biological drivers of change in the Saba National Marine Park, Dutch Caribbean

    University essay from SLU/Dept. Of Aquatic Resources

    Author : Wiebke Homes; [2021]
    Keywords : GCRMN; Reef Health Index; ; marine protected area; fish-benthos interaction; macroalgae; herbuvory; trophic cascade; fishing; coral disease; Caribbean;

    Abstract : Coral reefs are experiencing large scale degradation. Motivated by the need for regular data monitoring and for quantification of the state and change of benthic and pelagic organisms, the Global Coral Reef Monitoring Network protocol was executed on 18 dive sites in fished and unfished areas around the island of Saba in the Saba National Marine Park (SNMP) in the Dutch Caribbean from March to May 2019. READ MORE

  6. 5. Algae hydrocarbons designed for bio-based lubricants

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Elin Sjöhag; [2020]
    Keywords : Microalgae; macroalgae; lubricant; alginate; grease; Mikroalger; makroalger; smörjmedel; alginat; förtjockningsmedel;

    Abstract : Smörjmedel är en nödvändighet för maskiner för att minska slitage och energiförbrukning. Dock är över 95% av de använda smörjmedlen i dag fossilbaserade. Smörjmedel baserade på vegetabiliska oljor finns tillgängliga men har ofta en lägre oxidativ stabilitet och sämre lågtemperaturegenskaper än deras fossilbaserade motsvarigheter. READ MORE