Browsing by Author "Malterer, Thomas J"
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Item Characterization of Sphagnum Top Moss: Ecology and Market (1994-03): Semi-Annual Progress Report(University of Minnesota, Duluth, 1994-03) Malterer, Thomas JObjective: To evaluate the feasibility of commercializing Sphagnum top moss production in Minnesota.Item Characterization of Sphagnum Top Moss: Ecology and Market (1994-10): Semi-Annual Progress Report(University of Minnesota, Duluth, 1994-10) Johnson, Kurt W; Malterer, Thomas J; Janssens, Jan AObjective: The overall goal of this project is to evaluate the feasibility of commercializing Sphagnum top moss production in Minnesota.Item Compost Product Development Utilizing Agricultural Residues (1994-03): Semi-Annual Progress Report(University of Minnesota, Duluth, 1994-03) Malterer, Thomas JObjective: To promote the development, production, and marketing of granulated turkey litter manure compost as an organic fertilizer.Item Evaluation of Carex Peat, Sphagnum Moss Peat, and Sphagnum Top Moss As Oil Sorbents(University of Minnesota Duluth, 1990) Hagen, Timothy S; Malterer, Thomas J; Levar, Thomas EExperiments were conducted to evaluate the ability of Carex peat, Sphagnum moss peat, and Sphagnum top moss to sorb (i.e., to take up and hold oil by either adsorption or absorption) Lloydminster and UHC crude oils. Pure component and mixed components of the peats and top moss were used. Experiments were carried out under ambient temperature and pressure. The sorptive capacity, sorptive rate, and height of capillary rise of oil was measured for the sorbents. The sorptive capacity of the pure Sphagnum top moss, for both oils, was significantly higher than that of the two peats. Mixtures of Sphagnum top moss and Sphagnum moss peat also had relatively high sorptive capacities. Carex peat and mixtures containing predominantly Carex peat had low sorptive capacities. The sorptive rates differed by both the oil type and sorbent. All pure component and mixed component sorbents had relatively low sorptive rates for the higher viscosity Lloydminster oil, and only slightly higher sorptive rates for the lower viscosity UHC crude oil. Mixing lower sorptive rate materials with higher sorptive rate materials resulted in lower than expected sorptive rates. In all cases, the height of capillary rise was found to be significantly higher for the mixed component sorbents than for the pure component sorbents. A preliminary cost-benefit assessment suggests that pure Sphagnum top moss, and mixtures that contain predominantly Sphagnum top moss are relatively inexpensive (0.022 to 0.031 US$/Kg oil sorbed) sorbents, and they may be competitive with common commercial oil sorbents.Item Granulated Peat for Targeted Industrial Applications (1994-03): Semi-Annual Progress Report(University of Minnesota, Duluth, 1994-03) Hagen, Timothy S; Berguson, William E; Malterer, Thomas JObjective: To develop and commercialize an effective absorbent peat granule for use in removing metals and hydrocarbons from wastewater and as an industrial oil absorbent.Item Mineland Reclamation using Office Waste Paper De-Inking Residue(University of Minnesota Duluth, 1994-03) McCarthy, Barbara J; Monson Geerts, Stephen D; Johnson, Kurt W; Malterer, Thomas J; Maly, Craig CPulp facilities which recycle office waste paper generate a large amount of waste by-products in the process of producing high-grade pulp. The paper-like residue, called de-inking residue, was evaluated for use in the restoration of vegetation on coarse taconite tailings in NE Minnesota. The mineland reclamation rules specify that a 90 percent vegetative cover shall be established on tailings after three growing seasons, however this level of cover on coarse tailings has not been consistently achieved in Minnesota using standard restoration practices. Research plots were established in 1992 at Eveleth Mines arranged in a randomized block design with three replications using five levels of de-inking residue, five levels of fertilization and two plant mixes. A total of twenty-five treatment combinations were assigned to 2.5m- by- 4.0m plots and lysimeters were installed to monitor changes in sub-surface water quality. Coarse tailings were evaluated to determine the effects of de-inking residue on their chemical properties. Vegetative cover was measured in July and September in 1992 and 1993 and nutrient levels were determined in plant samples. Fertilization and de-inking residue amendments had significant effects on the vegetative cover of both introduced and native plant species. De-inking residue had a minimal impact on the chemical properties of coarse tailings at rates up to 80 dry ton/acre and on sub-surface water quality at a depth of four feet. Vegetative cover for introduced species increased from no cover, to 49 percent the first growing season, to 90 percent at the end of the second growing season on tailings fertilized at the highest level and amended with residue at 10 ton/acre. At the same fertilizer and de-inking residue rate, vegetative cover for native plants increased from no cover to 7 percent the first growing season, to 69 percent at the end of the second growing season. Alfalfa had lower levels of boron, magnesium, and manganese on residue amended plots in 1992 and 1993. Bluestem had higher levels of calcium and zinc, but lower levels of magnesium and manganese on residue amended. plots. Cadmium, chromium, copper, nickel, lead, and zinc in alfalfa and bluestem did not accumulate to toxic levels. Deinking residue appears to have benefited vegetative growth after two growing seasons using deinking residue applied at 10 dry ton/acre with fertilizer applied at 160 lb/acre of nitrogen and 359 lb/acre of phosphorus.Item Peat Based Sorbent Mats: Final Report(University of Minnesota, Duluth, 1993-08) Hagen, Timothy S; Malterer, Thomas JObjective: To develop a cost effective absorbent pad as a replacement for polypropylene and cotton pads.Item Peat Derivatives: Final Report(University of Minnesota, Duluth, 1989-12) Malterer, Thomas JThis report contains findings of the Peat Derivatives Project, sponsored by the Greater Minnesota Corporation, on the potential development of commercial humic acid products from Minnesota peats. The report provides a basis from which the Natural Resources Research Institute's (NRRI's), Peat Program can plan future research and product development for commercial uses of humic acids derived from Minnesota peats. Burnie acids typically comprise 25-50 percent of the dry weight of peat. The report identifies several areas that have a high likelihood of product development success.Item Technical Assistance to Minnesota's Peat Industry: Semi-Annual Progress Report(University of Minnesota Duluth, 1995-02) Malterer, Thomas JSemi-Annual progress and financial report that provides technical assistance to Minnesota's peat industry through research, advice on regulatory matters, administrative support, and education about Minnesota's peat industry.Item The Use of Peat in Turkey and Pig Manure Management: Semi-Annual Progress Report(University of Minnesota, Duluth, 1993-08) Malterer, Thomas J