Japanese Geotechnical Society Special Publication最新文献_第2页

Climate Change Effects of Gases from Municipal Solid Waste Landfills 城市固体废物填埋场排放气体对气候变化的影响

Japanese Geotechnical Society Special Publication Pub Date : 2021-10-12 DOI: 10.3208/jgssp.v09.cpeg035

D. Manheim, N. Yeşiller, J. Hanson

{"title":"Climate Change Effects of Gases from Municipal Solid Waste Landfills","authors":"D. Manheim, N. Yeşiller, J. Hanson","doi":"10.3208/jgssp.v09.cpeg035","DOIUrl":"https://doi.org/10.3208/jgssp.v09.cpeg035","url":null,"abstract":"Direct and indirect effects of landfill gases and interrelationships between direct and indirect climate-forcing emissions and cover soil characteristics were analyzed at 5 municipal solid landfills in California. Fluxes of 80 chemicals were quantified across daily, intermediate, and final covers using static flux chambers. Whole-site emissions were scaled up using the flux data. Direct and indirect climate-forcing emissions were estimated through application of global warming (direct), atmospheric degradation (direct), tropospheric ozone forming (indirect), stratospheric ozone depleting (indirect), and secondary aerosol forming (indirect) potentials reported for each chemical. Methane emissions accounted for 46 to 99% of the total direct climate-forcing emissions. Nitrous oxide and F-gases collectively accounted for 1 to 99% of the total direct climate-forcing emissions. Overall direct emissions accounted for 93 to nearly 100% of the total combined (direct and indirect) climate-forcing emissions. Correlations were observed: a) between direct and indirect climate-forcing emissions of greenhouse gases and water content parameters as well as void ratio and b) between direct and indirect climate-forcing emissions of NMVOCs and mass of water in a cover profile, volumetric air content, temperature, and volumetric solids content.","PeriodicalId":283909,"journal":{"name":"Japanese Geotechnical Society Special Publication","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125908024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Diffusion study of municipal solid waste contaminants in compacted lateritic soil treated with bacillus coagulans 城市生活垃圾污染物在混凝芽孢杆菌处理的红土中扩散研究

Japanese Geotechnical Society Special Publication Pub Date : 2021-10-12 DOI: 10.3208/jgssp.v09.cpeg038

P. Yohanna, T. S. Ijimdiya, A. Eberemu, Kolawole J Kolawole

{"title":"Diffusion study of municipal solid waste contaminants in compacted lateritic soil treated with bacillus coagulans","authors":"P. Yohanna, T. S. Ijimdiya, A. Eberemu, Kolawole J Kolawole","doi":"10.3208/jgssp.v09.cpeg038","DOIUrl":"https://doi.org/10.3208/jgssp.v09.cpeg038","url":null,"abstract":"The diffusion of municipal solid waste (MSW) contaminants in compacted lateritic soil-Bacillus coagulans (B. coagulans) mixture was studied. Diffusion test for single reservoir, decreasing source was adopted. Soil samples were treated with B. coagulans at one-third (1/3) pore volume in stepped suspension density of 0, 1.5 × 10 8 , 6 × 10 8 , 1.2 × 10 9 , 1.8 × 10 9 and 2.4 × 10 9 cells/ml, respectively, before compaction. Specimens were prepared at optimum moisture content (OMC) of British Standard heavy (BSH) compaction energy. Cementation reagent containing 3 g Nutrient broth, 20 g urea, 10 g NH4Cl, 2.12 g NaHCO3 and 2.8 g CaCl2 per litre of distilled water was injected by gravity in three (3) cycles of 6 hours interval into the compacted specimens. Thereafter, the specimens were sealed at the top with plastic sheets with small openings for the sequential introduction of water and leachate for 21 days and 69 days, respectively, to simulate field condition. Results obtained show that diffusion testing water content, pH and electrical conductivity within the soil column decreased with depth. Generally, all the cations considered had diffusion coefficient (D * ) and tortuosity factors (a) values that increased with increase in B. coagulans suspension density. However, Mg 2+ had value that initially decreased from 5.98 × 10 -9 at 0 cells/ml to a minimum value of -4.30 × 10 -8 at 1.5 × 10 8 cells/ml and thereafter increased to 1.64 × 10 -9 at B. coagulans suspension density of 2.4 × 10 9 cells/ml. The apparent D * and a values for the anions considered initially decreased to a minimum and thereafter increased. The pore fluid concentration profile for the numerous chemical classes tested showed that the compacted lateritic soil B. coagulans mixture can attenuate K + and Cl – ions in MSW containment application.","PeriodicalId":283909,"journal":{"name":"Japanese Geotechnical Society Special Publication","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124852908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Comparison of unconfined compressive strength on heated bentonite-sand mixture by chemical exposure 热膨润土-砂混合物无侧限抗压强度化学暴露比较

Japanese Geotechnical Society Special Publication Pub Date : 2021-10-12 DOI: 10.3208/jgssp.v09.cpeg002

T. Nishimura, J. Koseki

引用次数: 0

Numerical analysis of dynamic loads in pavement structures based on the subgrade material of MSWI bottom ash 基于MSWI底灰路基材料的路面结构动荷载数值分析

Japanese Geotechnical Society Special Publication Pub Date : 2021-10-12 DOI: 10.3208/jgssp.v09.cpeg107

Ji Chen, Jianxin Yang, Yanhong Chen, Bin Li, Yucheng Huang, Q. Tang

{"title":"Numerical analysis of dynamic loads in pavement structures based on the subgrade material of MSWI bottom ash","authors":"Ji Chen, Jianxin Yang, Yanhong Chen, Bin Li, Yucheng Huang, Q. Tang","doi":"10.3208/jgssp.v09.cpeg107","DOIUrl":"https://doi.org/10.3208/jgssp.v09.cpeg107","url":null,"abstract":"With the rapid promotion of city urbanization, the amount of municipal solid waste (MSW) is increasing. Incineration can significantly reduce the mass, volume and generate energy at the meanwhile, making it a mainstream approach for recycle of MSW. The process of incineration brings about various benefits, such as good capacity reduction, high quality reduction, effective removal of harmful components, and high efficiency of resource reuse. The utilization of MSWI bottom ash can achieve the purpose of energy conservation, emission reduction and resource recycling. Recently, MSWI has been successfully recycled for many applications, especially in road construction. Many simulation studies have conducted it as substitutable material in subgrade layer, owing to the similarity to traditional mineral aggregate. It is indispensable to develop a resistance as subgrade layer, and the purpose of this paper is to investigate the feasibility of MSWI bottom ash for practical application in subgrade layer. For this reason, an ABAQUS finite element simulation model of pavement structure subjected to dynamic loads has been conducted.","PeriodicalId":283909,"journal":{"name":"Japanese Geotechnical Society Special Publication","volume":"262 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114338592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Risk assessment procedure for the performance-based design of landfill lining systems and cutoff walls 基于性能的垃圾填埋场衬砌系统和防渗墙设计的风险评估程序

Japanese Geotechnical Society Special Publication Pub Date : 2021-10-12 DOI: 10.3208/jgssp.v09.cpeg028

A. Dominijanni, N. Guarena, M. Manassero

引用次数: 0

Behavior of hazardous metal(loid)s release from excavated marine sedimentary rock under atmospheric exposure with drying-wetting cycles 干-湿循环大气暴露条件下海相沉积岩有害金属(loid)释放特性研究

Japanese Geotechnical Society Special Publication Pub Date : 2021-10-12 DOI: 10.3208/jgssp.v09.cpeg149

Yuto Yoshida, H. Sakanakura, T. Miura, M. Katoh

{"title":"Behavior of hazardous metal(loid)s release from excavated marine sedimentary rock under atmospheric exposure with drying-wetting cycles","authors":"Yuto Yoshida, H. Sakanakura, T. Miura, M. Katoh","doi":"10.3208/jgssp.v09.cpeg149","DOIUrl":"https://doi.org/10.3208/jgssp.v09.cpeg149","url":null,"abstract":"Large amounts of marine sedimentary rock are excavated for the construction of modern high-speed railways and roads, and they pose environmental risk due to the release of hazardous metal(loid)s. It is therefore important understand how hazardous metal(loid)s are released from excavated rock. This study investigated the influences of alteration surface structure of excavated rock induced by atmospheric exposure with drying-wetting cycles on the release of hazardous metal(loid)s. The atmospheric exposure with the drying-wetting cycles caused the particle size reduction, but not carbonation. In addition, it induced the oxidation of framboidal pyrite, resulting in the increase in the sulfate ion release and decrease in the pH in the excavated rock. The amount of amorphous iron content decreased with the increase in the period of atmospheric exposure. The amounts of arsenic, lead, and fluoride ion release were decreased with the increase in the period of atmospheric exposure, while those of selenium was gradually increased. The amount of boron release was stable during the atmospheric exposure. On the basis of these results, this study suggests that the atmospheric exposure with the drying-wetting cycles enhances/suppresses the release of hazardous metal(loid)s from the excavated rock.","PeriodicalId":283909,"journal":{"name":"Japanese Geotechnical Society Special Publication","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124838193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modeling Hysteresis of Water–NAPL–Air Suction–Saturation Relationship in Porous Media 多孔介质中水- napl -空气吸力-饱和度关系的滞后模拟

Japanese Geotechnical Society Special Publication Pub Date : 2021-10-12 DOI: 10.3208/jgssp.v09.cpeg006

Lohit Krishna Pranav Puligadda, M. Kikumoto

{"title":"Modeling Hysteresis of Water–NAPL–Air Suction–Saturation Relationship in Porous Media","authors":"Lohit Krishna Pranav Puligadda, M. Kikumoto","doi":"10.3208/jgssp.v09.cpeg006","DOIUrl":"https://doi.org/10.3208/jgssp.v09.cpeg006","url":null,"abstract":"We propose a novel approach to capture the hysteresis of suction–degree of saturation (s–S), relationship of three–phase fluids in porous media. We defined effective suction, s', that incorporates the delay in the variation of saturation due to hysteresis, with its movement in a closed domain in suction space. This domain defines a possible range of effective suction in which matric suction s always locates at the center of locus, and the incremental change in matric suction determines the movement in the effective suction space. This effective suction is incorporated in a unique s–S relationship defined by the van Genuchten’s equation to obtain a delayed variation in the degrees of saturation caused due to hysteresis during wetting and drying scanning paths. Through the incorporation of entire effective suction space in the van Genuchten’s s–S relationship, we proposed a direct and modest approach to represent the saturation of air, NAPL, and water through a single point in a triangular model along with their possible respective hysteretic variation in both, 2–phase and 3–phase systems. Vertical profiles of realistic soil behavior are also simulated to understand the effect of hysteresis by incorporating the proposed model in a 3–phase system.","PeriodicalId":283909,"journal":{"name":"Japanese Geotechnical Society Special Publication","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121419558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Study of heavy metals transport in the vadose zone of contaminated soil 重金属在污染土壤渗透带中的迁移研究

Japanese Geotechnical Society Special Publication Pub Date : 2021-10-12 DOI: 10.3208/jgssp.v09.cpeg129

Prathima B, S. P., S. G. L.

引用次数: 2

Coupled process modeling for energy generation from municipal solid waste degradation: Laboratory-scale and field-scale simulations 城市固体废物降解产生能量的耦合过程建模:实验室规模和现场规模模拟

Japanese Geotechnical Society Special Publication Pub Date : 2021-10-12 DOI: 10.3208/jgssp.v09.cpeg111

D. Zekkos, Sampurna Data, X. Fei

{"title":"Coupled process modeling for energy generation from municipal solid waste degradation: Laboratory-scale and field-scale simulations","authors":"D. Zekkos, Sampurna Data, X. Fei","doi":"10.3208/jgssp.v09.cpeg111","DOIUrl":"https://doi.org/10.3208/jgssp.v09.cpeg111","url":null,"abstract":"Modern regulated landfills are designed to protect the environment by containing and isolating municipal solid waste (MSW) from the environment. Instead of treating MSW as a hazard to be contained, next generation landfills, here termed Sustainable Energy Reactor Facilities (SERFs) are envisioned to be designed and operated with a main focus on energy generation (through anaerobic biodegradation processes) and sustainability. Towards this vision, a coupled hydraulic-biochemical-mechanical model that is based on the HBM model, is implemented in large laboratory-scale and field-scale studies to simulate the degradation process of MSW. The model captures the consumption of biodegradable organic fraction in the waste by microorganisms, eventually leading to biogas generation and changing solid waste and leachate characteristics. The model was first tested against 0.04 m 3 laboratory experiments to assess its ability to predict the observed behavior and derive values for the various model parameters. Subsequently, the model is implemented on a 37m 3 field lysimeter at Deer Track Park Landfill. The presented data indicates that the model has the capacity to be implemented in field scale and generate geospatially variable estimates of methane (i.e., energy) yield.","PeriodicalId":283909,"journal":{"name":"Japanese Geotechnical Society Special Publication","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128666442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temperature effect on diffusion and non-linear adsorption of ammonium through geosynthetic clay liner and in-situ clayey soil in Hanoi, Vietnam 温度对越南河内市土工合成粘土衬里和原位粘土中铵的扩散和非线性吸附的影响

Japanese Geotechnical Society Special Publication Pub Date : 2021-10-12 DOI: 10.3208/jgssp.v09.cpeg079

T. T. Hoai, T. Mukunoki, N. T. Mai

{"title":"Temperature effect on diffusion and non-linear adsorption of ammonium through geosynthetic clay liner and in-situ clayey soil in Hanoi, Vietnam","authors":"T. T. Hoai, T. Mukunoki, N. T. Mai","doi":"10.3208/jgssp.v09.cpeg079","DOIUrl":"https://doi.org/10.3208/jgssp.v09.cpeg079","url":null,"abstract":"High concentration of ammonium was detected in groundwater in southern Hanoi, Vietnam while municipal solid waste (MSW) landfills were known to generate large amounts of NH 4+ . Thus, bottom barrier with well performance should be required in Hanoi MSW landfills to minimize NH 4+ migration. Hanoi is expected to experience temperature increase, which enables to reduce hydraulic-barrier performance. Hence, study on temperature effect on NH 4 + adsorption and diffusion through landfill barriers plays a key role in prevention of NH 4 + contaminated aquifers. The objective is to evaluate effect of three kinds of temperature (20 o C, 35 o C and 50 o C) on NH 4+ adsorption and diffusion through GCL and in-situ clayey soil sampled in Hanoi (HN clay). The results show that GCL possesses higher non-linear partitioning coefficient ( K d * ) and lower diffusion coefficient ( D e ) than HN clay in all cases of temperature. Both GCL and HN clay experienced an increase of K d * and D e in the temperature range of 20 o C and 35 o C. When temperature rises to 50 o C, K d * tends to decrease but D e keep increasing. Hence, the study indicates a more dominant effect of diffusion coefficient than non-linear partitioning coefficient in promotion of ammonium mass transport through HN clay.","PeriodicalId":283909,"journal":{"name":"Japanese Geotechnical Society Special Publication","volume":"21 3-5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120922623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2