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Market Design for CO2 Abatement in Coal-fired Power Industry Based on Combinatorial Auction
Issue:
Volume 7, Issue 1, February 2019
Pages:
1-13
Received:
19 January 2019
Accepted:
27 February 2019
Published:
1 April 2019
Abstract: Market design is the core issue for reducing CO2 emissions from coal-fired power industry, however the current carbon market has some deficiencies in this area. Utilizing the combinatorial auction way, this article proposed an enhanced carbon market special for power industry by complementing current cap-and-trade system. Concretely, the enhanced market design is improved by lower- and upper-bound price, combinatorial auction for carbon allowances initial allocation, carbon submarket trade, and electricity-environment coordinated regulation. In the enhanced market, generator competes for initial carbon allowances as a form of delivering a demand function to market organizer, which can be depicted as and settled by a stochastic linear programming model. Given the carbon allowances market supply curve (i.e., total initial allowances issued), environment regulator matches the market demand curve (i.e., through adding up those individual bid demand curves together) in a uniform market clearing price (MCP) way; by this means, initial carbon market equilibrium is reached. Under this enhanced mechanism, price of bidders is ordered according to their operational advantage, moreover, respective quantity of bid allowances is also sequenced in the same way. Comparing with current cap-and-trade system, the enhanced market design can efficiently motivate generator to reduce CO2 emissions through controlling CO2 intensity per sold MWh. Numerical simulation further verified the efficiency of this enhanced carbon market design.
Abstract: Market design is the core issue for reducing CO2 emissions from coal-fired power industry, however the current carbon market has some deficiencies in this area. Utilizing the combinatorial auction way, this article proposed an enhanced carbon market special for power industry by complementing current cap-and-trade system. Concretely, the enhanced m...
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Degradation Phenol Wastewater by Heating Activated Persulfate
Issue:
Volume 7, Issue 1, February 2019
Pages:
14-21
Received:
3 December 2018
Published:
28 April 2019
Abstract: In order to solve the problem of refractory industrial wastewater, the phenol wastewater was used as the treatment object. The treatment effect of heated activated potassium persulfate oxidation on phenol wastewater was studied. The reaction time, reaction temperature, K2S2O8 dosage, pH and initial phenol concentration on the treatment effect were discussed respectively. and the reaction free mechanism analysis was carried out according to the test results. Under the conditions of heat activation at 35°C, when the initial concentration of phenol is 200 mg/L, the reaction time is 180 min, the pH is 3, m(K2S2O8): m(C6H6O) =1, the optimum removal rate of phenol was 13.61%, and the optimal removal rate of COD was 12.30%. When the temperature was raised to 85°C under the same reaction conditions, the removal rates of phenol and COD increased to 32.17% and 26.72%, respectively.
Abstract: In order to solve the problem of refractory industrial wastewater, the phenol wastewater was used as the treatment object. The treatment effect of heated activated potassium persulfate oxidation on phenol wastewater was studied. The reaction time, reaction temperature, K2S2O8 dosage, pH and initial phenol concentration on the treatment effect were ...
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Aboveground Biomass Dynamics in the Low-Mountain Dry Grasslands of the Tianshan Mountains
Xiaotao Huang,
Geping Luo,
Hao Wang,
Jean Baptiste Nsengiyumva
Issue:
Volume 7, Issue 1, February 2019
Pages:
22-26
Received:
19 March 2019
Published:
23 May 2019
Abstract: Identifying the dynamics of aboveground biomass (AB) is vital for effective grassland management, yet knowledge on this phenomenon remains limited in the low-mountain dry grasslands (LMDG) of the Tianshan Mountains. In this study, systematic observations were conducted from 2014 to 2017 to determine AB dynamics in the LMDG of the Tianshan Mountains. To accomplish this, a cutting experiment, an HL20 Bowen ratio system, and TDR300 and WatchDog1400 systems were used. AB dynamics had unique characteristics, because of the influence of the unique environment of this region. AB increased rapidly in spring (April – May), and then increased slowly in summer (June – August) and autumn (September – October). Plants entered dormancy in summer (primarily August). In autumn, plants continued to grow after dormancy, except in years with low precipitation which limited plant growth. Plants generally suffered from water stress in this region. However, in spring, the limiting factor for plant growth was heat, not water. Heat might also be the limiting factor for plant growth in autumn. The results are expected to enhance the understanding of AB dynamics in the LMDG of the Tianshan Mountains, providing data to support local grassland management.
Abstract: Identifying the dynamics of aboveground biomass (AB) is vital for effective grassland management, yet knowledge on this phenomenon remains limited in the low-mountain dry grasslands (LMDG) of the Tianshan Mountains. In this study, systematic observations were conducted from 2014 to 2017 to determine AB dynamics in the LMDG of the Tianshan Mountains...
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Temporal and Spatial Distribution of SO2 in the Process of Haze in North China Based on Remote Sensing Data
Chang Ruoying,
Zhao Jun,
Li Wen,
Jia Jingjing
Issue:
Volume 7, Issue 1, February 2019
Pages:
27-33
Received:
21 April 2019
Published:
15 June 2019
Abstract: Based on the data sources of OMI data and haze data in North China, this paper studies the spatial distribution characteristics of SO2 column amounts in North China from 2015 to 2017, and compares the relationship between SO2 column amounts and haze. Corresponding analysis reveals the objective regularity of its existence. The results revealed that: 1) spatially, the value of SO2 column is distributed higher in south and lower in north. In time, the amount of SO2 column is characterized by winter > autumn > spring > summer; 2) during the haze event, SO2 increased first and then decreased. The correlation analysis between the monthly average concentration of SO2 and the frequency of haze weather, showed that there is a high correlation between the SO2 concentration and the frequency of haze occurrence, and there is consistency in the space-time distribution; 3) The haze in North China is affected by meteorological and climatic factors and human activities. Coordination within the region is an important means to control air quality. To clarify the spatial and temporal distribution of SO2 during the haze weather in North China is conductive to smooth progress of haze events control in North China.
Abstract: Based on the data sources of OMI data and haze data in North China, this paper studies the spatial distribution characteristics of SO2 column amounts in North China from 2015 to 2017, and compares the relationship between SO2 column amounts and haze. Corresponding analysis reveals the objective regularity of its existence. The results revealed that...
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Short-term Effects of Shallow Sphagnum Moss Biomass Harvesting on the Runoff Water Quality
Issue:
Volume 7, Issue 1, February 2019
Pages:
34-39
Received:
5 April 2019
Accepted:
10 June 2019
Published:
27 June 2019
Abstract: White horticultural peat is proven to be a superior growing medium. It is microbiologically active, it binds nutrients and water significantly due to its favorable cation exchange capacity and porosity. Unfortunately, horticultural peat is a very slowly renewable biomass, and good quality horticultural peat is not so common even in peatland-rich countries. Therefore, good-quality and simultaneously renewable growing media alternatives are needed. A new growing medium introduced in recent years is based on Sphagnum moss biomass. According to our results, shallow Sphagnum moss biomass harvesting extended down to a depth of not over 30 cm did not cause any harmful effects on watercourses during the short-term period after harvesting. On the contrary, it is well-known that traditional peat extraction increases the leaching of suspended solids, dissolved organic carbon and nutrients, especially nitrogen and phosphorus into watercourses located downstream. The leaching of SS, DOC and nutrients from peat extraction areas is a significant local problem, since the nutrient leaching may cause enhanced eutrophication and decreased biodiversity, especially in vulnerable headwaters. Because of the probably negligible harmful effects on the water quality, Sphagnum moss biomass can be considered as a truly environmental-friendly growing medium compared with the conventionally extracted white horticultural peat.
Abstract: White horticultural peat is proven to be a superior growing medium. It is microbiologically active, it binds nutrients and water significantly due to its favorable cation exchange capacity and porosity. Unfortunately, horticultural peat is a very slowly renewable biomass, and good quality horticultural peat is not so common even in peatland-rich co...
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