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Jia, Yu
Publications (10 of 14) Show all publications
Jia, Y., Hamberg, R., Qureshi, A., Mäkitalo, M. & Maurice, C. (2019). Variation of green liquor dregs from different pulp and paper mills for use in mine waste remediation. Environmental science and pollution research international, 26(30), 31284-31300
Open this publication in new window or tab >>Variation of green liquor dregs from different pulp and paper mills for use in mine waste remediation
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2019 (English)In: Environmental science and pollution research international, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 26, no 30, p. 31284-31300Article in journal (Refereed) Published
Abstract [en]

The geotechnical, chemical, and mineralogical properties of green liquor dregs (GLDs) generated as byproducts from five paper mills were investigated to assess their buffering and heavy metal immobilization capacities and their roles as water and oxygen barriers. One type of GLD was further studied to test the effects of the retrieval process and the storage, drying, and hydration of GLD. The high water retention capacity of the GLDs is valuable for limiting O2diffusion. Laboratory results showed that the GLDs had hydraulic conductivities of 3.7 × 10−9–4.6 × 10−8 m/s and varied regularly in plasticity. The chemical and mineralogical compositions of the GLDs varied greatly, reflecting the raw material used to produce paper and the process used to retrieve GLDs. Although they had high total heavy metal contents, none of the leached elements from the GLDs (L/S 10 cm3/kg) exceeded the European Union’s limits for landfills of non-hazardous waste. The GLDs exhibited high buffering capacities. In a supplementary test, the buffering capacities varied (0.0041–0.0114 M H+/g GLD) over 72 d after acid was added to the GLD. Changing the filtration process did not greatly affect the GLDs’ properties but mainly affected the hydraulic conductivity, total heavy metal contents and sulfur content. Analyzing the storage of GLDs is necessary in the mining industry because remediation measures require large amounts of material over short periods. The buffering capacity of the dried GLD decreased slightly. The effect of dewatering caused by the mixing of 2% Na-lignosulfate with GLD (w/w) was low.

Place, publisher, year, edition, pages
Springer, 2019
Keywords
Acid neutralization, Buffering capacity, Heavy metals, Water retention, Plasticity, Beneficiation
National Category
Geotechnical Engineering Geochemistry
Research subject
Applied Geochemistry; Soil Mechanics
Identifiers
urn:nbn:se:ltu:diva-75826 (URN)10.1007/s11356-019-06180-0 (DOI)000494047900065 ()31471848 (PubMedID)
Note

Validerad;2019;Nivå 2;2019-11-22 (johcin)

Available from: 2019-09-03 Created: 2019-09-03 Last updated: 2019-11-22Bibliographically approved
Jia, Y., Stahre, N., Mäkitalo, M., Maurice, C. & Öhlander, B. (2017). Elemental mobility in sulfidic mine tailings reclaimed with paper mill by-products as sealing materials (ed.). Environmental science and pollution research international, 24(25), 20389-20389
Open this publication in new window or tab >>Elemental mobility in sulfidic mine tailings reclaimed with paper mill by-products as sealing materials
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2017 (English)In: Environmental science and pollution research international, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 24, no 25, p. 20389-20389Article in journal (Refereed) Published
Abstract [en]

Sealing layers made of two alkaline paper mill by-products, fly ash and green liquor dregs, were placed on top of 50-year-old sulfide-containing tailings as a full-scale remediation approach. The performance and effectiveness of the sealing layers with high water content for an oxygen barrier and low hydraulic conductivity for a sealing layer in preventing the formation of acid rock drainage were evaluated 5 years after the remediation. The leaching behavior of the covered tailings was studied using batch leaching tests (L/S ratio 10 L/kg). The leaching results revealed that, in general, the dregs- and ash-covered tailings released relatively lower concentrations of many elements contained in acid rock drainage compared to those from the uncovered tailings. A change in the chemical composition and mineralogical state of the tailings was observed for the tailings beneath the covers. The increase in pH caused by the alkaline materials promoted metal precipitation. Geochemical modeling using PHREEQC confirmed most of the geochemical changes of the covered tailings. Both the ash and dregs showed potential to function as sealing materials in terms of their geochemical properties. However, mobilization of Zn and Ni from the lower part of the dregs-covered tailings was observed. The same phenomenon was observed for the lower part of the ash-covered tailings. Ash showed advantages over dregs as a cover material; based on geochemical studies, the ash immobilized more elements than the dregs did. Lysimeters were installed below the sealing layers, and infiltrating water chemistry and hydrology were studied to monitor the amount and quality of the leachate percolating through

Place, publisher, year, edition, pages
Springer, 2017
National Category
Geochemistry
Research subject
Applied Geology
Identifiers
urn:nbn:se:ltu:diva-65046 (URN)10.1007/s11356-017-9650-9 (DOI)000408698700021 ()28707240 (PubMedID)2-s2.0-85023754240 (Scopus ID)
Note

Validerad;2017;Nivå 2;2017-08-30 (andbra)

Available from: 2017-08-14 Created: 2017-08-14 Last updated: 2018-07-10Bibliographically approved
Nason, P., Jia, Y., Maurice, C., Alakangas, L. & Öhlander, B. (2016). Biodegradation of Biosolids Under Aerobic Conditions: Implications for Cover Materials for Sulfide Mine Tailings Remediation (ed.). Mine Water and the Environment, 35(3), 273-282
Open this publication in new window or tab >>Biodegradation of Biosolids Under Aerobic Conditions: Implications for Cover Materials for Sulfide Mine Tailings Remediation
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2016 (English)In: Mine Water and the Environment, ISSN 1025-9112, E-ISSN 1616-1068, Vol. 35, no 3, p. 273-282Article in journal (Refereed) Published
Abstract [en]

Sewage sludge residue (biosolids) was investigated for its potential as a long-term tailings cover. Biosolids may prevent oxygen diffusion into underlying sulfide tailings through microbial aerobic biodegradation of organic matter. Biosolids were investigated at laboratory-, pilot-, and field-scale using analysis of total organic matter (TOM) mass reduction and O2, CO2, CH4 concentrations to quantify the biodegradation rate. A 156-day, open microcosm experiment, in which the loss of biosolids mass over time at differing temperatures, mimicking ambient (20–22 °C), mesophilic (34 °C), and thermophilic (50 °C) conditions, indicated that TOM biodegradation was best in the mesophilic temperature range, with 14.8, 27.2, and 26.7 % mass depletion at ambient, mesophilic, and thermophilic conditions, respectively. The data was correlated to field-scale data that evaluated biodegradation rates via decreasing O2 and increasing CO2 concentrations. Field biodegradation rates were less than laboratory rates because lower mean annual temperatures (0.6–0.7 °C) diminished microbial activity. A calibrated model indicates that 20 % of a field application of biosolids will degrade within 2 years. However, the rate declines with time due to exhaustion of the most readily degradable organic fraction. If biodegradation cannot be maintained, the long-term effectiveness of biosolids as a covering material for mine tailings remains a concern.

National Category
Geochemistry
Research subject
Applied Geology
Identifiers
urn:nbn:se:ltu:diva-15882 (URN)10.1007/s10230-015-0339-3 (DOI)000382193900002 ()2-s2.0-84928624256 (Scopus ID)f734105d-fe2c-485f-8869-7e75ca81458c (Local ID)f734105d-fe2c-485f-8869-7e75ca81458c (Archive number)f734105d-fe2c-485f-8869-7e75ca81458c (OAI)
Note

Validerad; 2016; Nivå 2; 2016-10-18 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2019-11-22Bibliographically approved
Qureshi, A., Jia, Y., Maurice, C. & Öhlander, B. (2016). Characterisation of fly ashes for minimisation of acid mine drainage from coal mining waste rocks (ed.). In: (Ed.), Carsten Drebenstedt; Michael Paul (Ed.), Mining meets water: conflict and solutions IMWA 2016 in Leipzig, Germany, July 11-15, 2016. Paper presented at International Mine Water Association Annual Conference 2016 : Mining meets Water - Conflicts and solutions 12/07/2016 - 15/07/2016 (pp. 977-986). Freiberg: TU Bergakademie Freiberg, Institute of Mining and Special Civil Engineering
Open this publication in new window or tab >>Characterisation of fly ashes for minimisation of acid mine drainage from coal mining waste rocks
2016 (English)In: Mining meets water: conflict and solutions IMWA 2016 in Leipzig, Germany, July 11-15, 2016 / [ed] Carsten Drebenstedt; Michael Paul, Freiberg: TU Bergakademie Freiberg, Institute of Mining and Special Civil Engineering , 2016, p. 977-986Conference paper, Published paper (Refereed)
Abstract [en]

Acid mine drainage (AMD) due to the oxidation of sulphide bearing waste rock (WR) is a common environmental problem associated with coal extraction. Therefore, WRs from a lignite producing coal field in Pakistan and Lignite (PK), bituminous (FI) and biomass (SE) fly ashes (FAs) were mineralogically and chemically characterised to i) estimate the potential of WRs for generating AMD ii) estimate their deteriorating effects on natural waters, and iii) evaluate the FAs for their potential to minimise the impacts of WRs by preventing and/or neutralising AMD. The WRs were composed of quartz, pyrite, arsenopyrite, kaolinite, hematite and gypsum with traces of calcite, malladerite, spangolite, franklinite and birnessite. The major elements Si, Al, Ca and Fe were in the range (wt. %) of 8 – 12, 6 – 9, 0.3 – 3 and 1 – 10, respectively, with high S concentrations (1.94 – 11.33 wt. %). All FAs contained quartz, with iron oxide, anhydrite and magnesioferrite in PK, mullite and lime in FI and calcite and anorthite in SE. The Ca content in SE was 6 and 8 times higher compared to PK and FI, respectively.The WRs had considerable potential for generating AMD with net neutralisation potential corresponding to-70 to-492 kg CaCO3 tonne-1. FAs showed to have sufficient acid neutralisation potential corresponding to 20 – 275 kg CaCO3 tonne-1 , SE being the most alkaline probably due to the higher Ca content. The element leaching varied between the WRs due to their chemical and mineralogical composition and pH conditions during the weathering cell test for 28 weeks. However, in general, the leachates from the more acidic WRs were enriched about 3 to 4 orders of magnitude for certain elements compared to the less acidic WRs. The concentrations of Ca, SO42-, Na and Cl in the leachates were much higher compared to other elements from all FA samples. Iron, Cu and Hg were not detected in any of the FA leachates because of pH ranging from 9 to 13.Overall, the WRs had considerable potential for AMD generation and element leaching, therefore, deteriorate natural waters within the mining area. FAs, on the other hand, possess potential to minimise the impacts of WRs on the environment, due to their buffering capacity. However, the FAs vary in chemical composition and buffering capacity depending on their source, which makes it a possible challenge for utilisation.

Place, publisher, year, edition, pages
Freiberg: TU Bergakademie Freiberg, Institute of Mining and Special Civil Engineering, 2016
National Category
Geochemistry
Research subject
Applied Geochemistry
Identifiers
urn:nbn:se:ltu:diva-29977 (URN)000402663400152 ()39ead8ad-414f-4594-97ca-9e7b37bd4c0d (Local ID)978-3-86012-533-5 (ISBN)39ead8ad-414f-4594-97ca-9e7b37bd4c0d (Archive number)39ead8ad-414f-4594-97ca-9e7b37bd4c0d (OAI)
Conference
International Mine Water Association Annual Conference 2016 : Mining meets Water - Conflicts and solutions 12/07/2016 - 15/07/2016
Note

Godkänd; 2016; 20160803 (asiqur)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
Jia, Y., Maurice, C. & Öhlander, B. (2016). Mobility of as, Cu, Cr, and Zn from tailings covered with sealing materials using alkaline industrial residues: a comparison between two leaching methods (ed.). Environmental science and pollution research international, 23(1), 648-660
Open this publication in new window or tab >>Mobility of as, Cu, Cr, and Zn from tailings covered with sealing materials using alkaline industrial residues: a comparison between two leaching methods
2016 (English)In: Environmental science and pollution research international, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 23, no 1, p. 648-660Article in journal (Refereed) Published
Abstract [en]

Different alkaline residue materials (fly ash, green liquor dregs, and lime mud) generated from the pulp and paper industry as sealing materials were evaluated to cover aged mine waste tailings (

National Category
Geochemistry
Research subject
Applied Geology
Identifiers
urn:nbn:se:ltu:diva-16308 (URN)10.1007/s11356-015-5300-2 (DOI)000368199300062 ()26330323 (PubMedID)2-s2.0-84954401354 (Scopus ID)ff04aacf-4656-44ab-928f-9d2c93b9cadc (Local ID)ff04aacf-4656-44ab-928f-9d2c93b9cadc (Archive number)ff04aacf-4656-44ab-928f-9d2c93b9cadc (OAI)
Note

Validerad; 2016; Nivå 2; 20150907 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Qureshi, A., Jia, Y., Maurice, C. & Öhlander, B. (2016). Potential of fly ash for neutralisation of acid mine drainage (ed.). Environmental science and pollution research international, 23(17), 17083-17094
Open this publication in new window or tab >>Potential of fly ash for neutralisation of acid mine drainage
2016 (English)In: Environmental science and pollution research international, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 23, no 17, p. 17083-17094Article in journal (Refereed) Published
Abstract [en]

Lignite (PK), bituminous (FI) and biomass (SE) fly ashes (FAs) were mineralogically and geochemically characterised, and their element leachability was studied with batch leaching tests. The potential for acid neutralisation (ANP) was quantified by their buffering capacity, reflecting their potential for neutralisation of acid mine drainage. Quartz was the common mineral in FAs detected by XRD with iron oxide, anhydrite, and magnesioferrite in PK, mullite and lime in FI, and calcite and anorthite in SE. All the FAs had high contents of major elements such as Fe, Si, Al and Ca. The Ca content in SE was six and eight times higher compared to PK and FI, respectively. Sulphur content in PK and SE was one magnitude higher than FI. Iron concentrations were higher in PK. The trace element concentrations varied between the FAs. SE had the highest ANP (corresponding to 275 kg CaCO3 tonne-1) which was 15 and 10 times higher than PK and FI, respectively. The concentrations of Ca2+, SO4 2-, Na+ and Cl- in the leachates were much higher compared to other elements from all FA samples. Iron, Cu and Hg were not detected in any of the FA leachates because of their mild to strong alkaline nature with pH ranging from 9 to 13. Potassium leached in much higher quantity from SE than from the other ashes. Arsenic, Mn and Ni leached from PK only, while Co and Pb from SE only. The concentrations of Zn were higher in the leachates from SE. The FAs used in this study have strong potential for the neutralisation of AMD due to their alkaline nature. However, on the other hand, FAs must be further investigated, with scaled-up experiments before full-scale application, because they might leach pronounced concentrations of elements of concern with decreasing pH while neutralising AMD.

National Category
Geochemistry
Research subject
Applied Geology; Applied Geochemistry
Identifiers
urn:nbn:se:ltu:diva-13259 (URN)10.1007/s11356-016-6862-3 (DOI)000382674800019 ()27209637 (PubMedID)2-s2.0-84969850736 (Scopus ID)c73d75aa-70a2-4066-a4b0-cc4ad0bbc97c (Local ID)c73d75aa-70a2-4066-a4b0-cc4ad0bbc97c (Archive number)c73d75aa-70a2-4066-a4b0-cc4ad0bbc97c (OAI)
Note

Validerad; 2016; Nivå 2; 2016-10-18 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Jia, Y., Nason, P., Maurice, C., Alakangas, L. & Öhlander, B. (2015). Investigation of biosolids degradation under flooded environments for use in underwater cover designs for mine tailing remediation (ed.). Paper presented at . Environmental science and pollution research international, 22(13), 10047-10057
Open this publication in new window or tab >>Investigation of biosolids degradation under flooded environments for use in underwater cover designs for mine tailing remediation
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2015 (English)In: Environmental science and pollution research international, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 22, no 13, p. 10047-10057Article in journal (Refereed) Published
Abstract [en]

To evaluate the potential suitability of digested sewage sludge (frequently termed biosolids) for use as underwater cover material for mine waste tailings, the degradability of biosolids at 20 − 22 °C under flooded anaerobic conditions was evaluated during incubation for 230 days. Leaching of elements from the flooded anaerobic system was also evaluated. Biosolid degradation was confirmed by the generation and accumulation of CH4 and CO2. Specifically, approximately 1.65 mmoL gas/g biosolids was generated as a result of incubation, corresponding to degradation of 7.68 % of the organic matter, and the residue was stable at the end of the laboratory experiment. Under field conditions in northern Sweden, it is expected that the degradation rate will be much slower than that observed in the present study (Nason et al. Environ Earth Sci 70:30933105, 2013). Although the majority of biosolid fractions (>92 %) were shown to be recalcitrant during the incubation period, long-term monitoring of further degradability of residue is necessary. The leaching results showed that most of the metals and metalloids leached from the biosolids at day 230 were below the limit value for non-hazardous waste, although Ni was the only element approximately three times higher than the limit value for inert material at the landfill site. In conclusion, biosolids have potential for use as covering material for underwater storage of tailings based on their biodegradability and leaching of elements.

National Category
Geochemistry
Research subject
Applied Geology
Identifiers
urn:nbn:se:ltu:diva-2554 (URN)10.1007/s11356-015-4131-5 (DOI)000356937900046 ()25677786 (PubMedID)2-s2.0-84933179587 (Scopus ID)02c6aa7a-e50f-4ac2-9efb-0714f169ade5 (Local ID)02c6aa7a-e50f-4ac2-9efb-0714f169ade5 (Archive number)02c6aa7a-e50f-4ac2-9efb-0714f169ade5 (OAI)
Note
Validerad; 2015; Nivå 2; 20150216 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2019-11-22Bibliographically approved
Jia, Y., Maurice, C. & Öhlander, B. (2015). Metal Mobilization in Tailings Covered with Alkaline Residue Products: Results from a Leaching Test Using Fly Ash, Green Liquor Dregs, and Lime Mud (ed.). Paper presented at . Mine Water and the Environment, 34(3), 270-287
Open this publication in new window or tab >>Metal Mobilization in Tailings Covered with Alkaline Residue Products: Results from a Leaching Test Using Fly Ash, Green Liquor Dregs, and Lime Mud
2015 (English)In: Mine Water and the Environment, ISSN 1025-9112, E-ISSN 1616-1068, Vol. 34, no 3, p. 270-287Article in journal (Refereed) Published
Abstract [en]

The in situ dynamics of repeated percolation of rainwater through unoxidized mine tailings was simulated using a modified column test to predict long-term weathering characteristics. Fly ash, green liquor dregs, and lime mud waste materials from the paper mill industry were used in the column tests to assess the effect of alkaline paper mill residue on pH buffering and controlling the mobility of metals and semi-metals from the tailings. The experiment was continued for 15 cycles, each comprising reaction, leaching, and idle steps (1 week per step). The cumulative percolated water through the tailings represented a liquid:solid ratio of 1.6. The leached content of inorganic elements decreased with time in both the covered and the uncovered tailings. The presence of the alkaline materials consistently reduced the mobility of most contaminants (e.g. Cd, Co, Cr, Mn, Ni and Zn), but not As. The leachate was modeled using PHREEQC. XRD analysis of the remaining tailings samples after termination of the test showed detectable variations in mineral composition. The alkaline residue products all fulfilled the requirements as a cover material from a geochemical prospective, with the exception of As. The green liquor dregs and lime cover increased the pH of the tailings more rapidly than did the fly ash.

National Category
Geochemistry
Research subject
Applied Geology
Identifiers
urn:nbn:se:ltu:diva-3329 (URN)10.1007/s10230-014-0317-1 (DOI)000360224800004 ()2-s2.0-84940440084 (Scopus ID)124366b5-13bc-40b1-a120-0bb15338f688 (Local ID)124366b5-13bc-40b1-a120-0bb15338f688 (Archive number)124366b5-13bc-40b1-a120-0bb15338f688 (OAI)
Note
Validerad; 2015; Nivå 2; 20141219 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Mäkitalo, M., Maurice, C., Jia, Y. & Öhlander, B. (2014). Characterization of Green Liquor Dregs, Potentially Useful for Prevention of the Formation of Acid Rock Drainage (ed.). Paper presented at . Minerals, 4(2), 330-344
Open this publication in new window or tab >>Characterization of Green Liquor Dregs, Potentially Useful for Prevention of the Formation of Acid Rock Drainage
2014 (English)In: Minerals, ISSN 2075-163X, E-ISSN 2075-163X, Vol. 4, no 2, p. 330-344Article in journal (Refereed) Published
Abstract [en]

Using alternative materials such as residual products from other industries to mitigate the negative effects of acid rock drainage would simultaneously solve two environmental problems. The main residual product still landfilled by sulphate paper mills is the alkaline material green liquor dregs (GLD). A physical, mineralogical and chemical characterization of four batches of GLD was carried out to evaluate the potential to use it as a sealing layer in the construction of dry covers on sulphide-bearing mine waste. GLD has relatively low hydraulic conductivity (10−8 to 10−9 m/s), a high water retention capacity (WRC) and small particle size. Whilst the chemical and mineralogical composition varied between the different batches, these variations were not reflected in properties such as hydraulic conductivity and WRC. Due to relatively low trace element concentrations, leaching of contaminants from the GLD is not a concern for the environment. However, GLD is a sticky material, difficult to apply on mine waste deposits and the shear strength is insufficient for engineering applications. Therefore, improving the mechanical properties is necessary. In addition, GLD has a high buffering capacity indicating that it could act as an alkaline barrier. Once engineering technicalities have been overcome, the long-term effectiveness of GLD should be studied, especially the effect of aging and how the sealing layer would be engineered in respect to topography and climatic conditions.

National Category
Geochemistry
Research subject
Applied Geology
Identifiers
urn:nbn:se:ltu:diva-2713 (URN)10.3390/min4020330 (DOI)000342621600008 ()2-s2.0-84937521902 (Scopus ID)0640064c-7f7b-4a8c-bc28-dedee872b63a (Local ID)0640064c-7f7b-4a8c-bc28-dedee872b63a (Archive number)0640064c-7f7b-4a8c-bc28-dedee872b63a (OAI)
Note
Validerad; 2014; 20140424 (makmar)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Jia, Y., Nason, P., Alakangas, L., Maurice, C. & Öhlander, B. (2014). Degradation of digested sewage sludge residue under anaerobic conditions for mine tailings remediation (ed.). Paper presented at . Environmental Earth Sciences, 72(9), 3643-3654
Open this publication in new window or tab >>Degradation of digested sewage sludge residue under anaerobic conditions for mine tailings remediation
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2014 (English)In: Environmental Earth Sciences, ISSN 1866-6280, E-ISSN 1866-6299, Vol. 72, no 9, p. 3643-3654Article in journal (Refereed) Published
Abstract [en]

Previous studies showed that 85 % of total organic matter (TOM) in digested sewage sludge (biosolids) used as a sealing layer material over sulfide tailings at the Kristineberg Mine, northern Sweden had been degraded 8 years after application, resulting in a TOM reduction from 78 % to 14 %. To achieve a better understanding of the field observations, laboratory studies were performed to evaluate biodegradation rates of the TOM under anaerobic conditions. Results reveal that the original biosolid consisted of ca. 60 % TOM (48.0 % lignin and 11.8 % carbohydrates) that had not been fully degraded. The incubation experiments proved that 27.8 % TOM in the biosolid was further degraded anaerobically at 20-22 C during the 230 d incubation period, and that a plateau to the biodegradation rate was approached. Based on model results, the degradation constant was found to be 0.0125 (day-1). The calculated theoretical gas formation potential was ca. 50 % higher than the modeled results based on the average degradation rate. Cumulated H2S equated to 0.65 µmoL*g-1 of biosolid at 230 d. However, the large sulfurous compounds reservoir (1.76 g SO42- kg-1 biosolid) together with anaerobic conditions, can generate high concentrations of this gas over a long-term perspective. Due to the rate of biodegradability identified via anaerobic processes, the function of the biosolid to serve as an effective barrier to inhibit oxygen migration to underlying tailings, may decrease over time. However, a lack of readily degradable organic fractions in the biosolid and a large fraction of organic matter that was recalcitrant to degradation suggests a longer degradation duration, which would prolong the biosolid material’s function and integrity.

National Category
Geochemistry
Research subject
Applied Geology
Identifiers
urn:nbn:se:ltu:diva-3893 (URN)10.1007/s12665-014-3275-9 (DOI)000343899900033 ()2-s2.0-84919872184 (Scopus ID)1bd8f5f4-b4f6-4692-a181-7cbe0401a223 (Local ID)1bd8f5f4-b4f6-4692-a181-7cbe0401a223 (Archive number)1bd8f5f4-b4f6-4692-a181-7cbe0401a223 (OAI)
Note
Validerad; 2014; 20140406 (yuojia)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2019-11-22Bibliographically approved
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