Environmental aspects of alternative wet technologies for producing energy/fuel from peat. Final report
Abstract
Peat in situ contains up to 90% moisture, with about 50% of this moisture trapped as a colloidal gel. This colloidal moisture cannot be removed by conventional dewatering methods (filter presses, etc.) and must be removed by thermal drying, solvent extraction, or solar drying before the peat can be utilized as a fuel feedstock for direct combustion or gasification. To circumvent the drying problem, alternative technologies such as wet oxidation, wet carbonization, and biogasification are possible for producing energy or enhanced fuel from peat. This report describes these three alternative technologies, calculates material balances for given raw peat feed rates of 1000 tph, and evaluates the environmental consequences of all process effluent discharges. Wastewater discharges represent the most significant effluent due to the relatively large quantities of water removed during processing. Treated process water returned to the harvested bog may force in situ, acidic bog water into recieving streams, disrupting local aquatic ecosystems.
- Authors:
- Publication Date:
- Research Org.:
- Energy Resources Co., Inc., Walnut Creek, CA (USA)
- OSTI Identifier:
- 6527442
- Report Number(s):
- DOE/FC/10169-T1
- DOE Contract Number:
- AC18-80FC10169
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 01 COAL, LIGNITE, AND PEAT; PEAT; ANAEROBIC DIGESTION; CARBONIZATION; OXIDATION; WATER REMOVAL; WASTE WATER; CHEMICAL COMPOSITION; ENVIRONMENTAL EFFECTS; WATER TREATMENT; COAL PREPARATION; DRYING; FLOWSHEETS; GASIFICATION; BIOCONVERSION; CHEMICAL REACTIONS; COMMINUTION; DECOMPOSITION; DIAGRAMS; DIGESTION; ENERGY SOURCES; FOSSIL FUELS; FUELS; HYDROGEN COMPOUNDS; LIQUID WASTES; MANAGEMENT; ORGANIC MATTER; OXYGEN COMPOUNDS; PROCESSING; REMOVAL; THERMOCHEMICAL PROCESSES; WASTE MANAGEMENT; WASTE PROCESSING; WASTES; WATER; 013000* - Coal, Lignite, & Peat- Transport, Handling, & Storage; 010900 - Coal, Lignite, & Peat- Environmental Aspects
Citation Formats
Smith, R T. Environmental aspects of alternative wet technologies for producing energy/fuel from peat. Final report. United States: N. p., 1981.
Web. doi:10.2172/6527442.
Smith, R T. Environmental aspects of alternative wet technologies for producing energy/fuel from peat. Final report. United States. https://doi.org/10.2172/6527442
Smith, R T. 1981.
"Environmental aspects of alternative wet technologies for producing energy/fuel from peat. Final report". United States. https://doi.org/10.2172/6527442. https://www.osti.gov/servlets/purl/6527442.
@article{osti_6527442,
title = {Environmental aspects of alternative wet technologies for producing energy/fuel from peat. Final report},
author = {Smith, R T},
abstractNote = {Peat in situ contains up to 90% moisture, with about 50% of this moisture trapped as a colloidal gel. This colloidal moisture cannot be removed by conventional dewatering methods (filter presses, etc.) and must be removed by thermal drying, solvent extraction, or solar drying before the peat can be utilized as a fuel feedstock for direct combustion or gasification. To circumvent the drying problem, alternative technologies such as wet oxidation, wet carbonization, and biogasification are possible for producing energy or enhanced fuel from peat. This report describes these three alternative technologies, calculates material balances for given raw peat feed rates of 1000 tph, and evaluates the environmental consequences of all process effluent discharges. Wastewater discharges represent the most significant effluent due to the relatively large quantities of water removed during processing. Treated process water returned to the harvested bog may force in situ, acidic bog water into recieving streams, disrupting local aquatic ecosystems.},
doi = {10.2172/6527442},
url = {https://www.osti.gov/biblio/6527442},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri May 01 00:00:00 EDT 1981},
month = {Fri May 01 00:00:00 EDT 1981}
}