Efficient energy recovery through a combination of waste-to-energy systems for a low-carbon city

Assessing transport CO2 emissions is important in the development of low-carbon strategies, but studies based on mixed land use are rare. This study assessed CO2 emissions from passenger transport in traffic analysis zones (TAZs) at the community level, based on a combination of the mixed-use development model and the vehicle emission calculation model. Based on mixed land use and transport accessibility, the mixed-use development model was adopted to estimate travel demand, including travel modes and distances. As a leading low-carbon city project of international cooperation in China, Shenzhen International Low-Carbon City Core Area was chosen as a case study. The results clearly illustrate travel demand and CO2 emissions of different travel modes between communities and show that car trips account for the vast majority of emissions in all types of travel modes in each community. Spatial emission differences are prominently associated with inadequately mixed land use layouts and unbalanced transport accessibility. The findings demonstrate the significance of the mixed land use and associated job-housing balance in reducing passenger CO2 emissions from passenger transport, especially in per capita emissions. Policy implications are given based on the results to facilitate sophisticated transport emission control at a finer spatial scale. This new framework can be used for assessing the impacts of urban planning on transport emissions to promote sustainable urbanization in developing countries.

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Catalytic Pyrolysis in Waste to Energy Recovery Applications: A Review

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/1107/1/012226 ◽

2021 ◽

Vol 1107 (1) ◽

pp. 012226

Author(s):

Oyetunji O. Oyeleke ◽

Olayinka S. Ohunakin ◽

Damola S. Adelekan

Keyword(s):

Energy Recovery ◽

Catalytic Pyrolysis ◽

Waste To Energy

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Does the Low-Carbon City Pilot Policy Promote Green Technology Innovation? Based on Green Patent Data of Chinese A-Share Listed Companies

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18073695 ◽

2021 ◽

Vol 18 (7) ◽

pp. 3695

Author(s):

Jintao Ma ◽

Qiuguang Hu ◽

Weiteng Shen ◽

Xinyi Wei

Keyword(s):

Technological Innovation ◽

Technology Innovation ◽

Objective Assessment ◽

Green Technology ◽

Low Carbon ◽

Corporate Financing ◽

Multiple Dimensions ◽

Low Carbon City ◽

The Impact ◽

A Share

To cope with climate change and achieve sustainable development, low-carbon city pilot policies have been implemented. An objective assessment of the performance of these policies facilitates not only the implementation of relevant work in pilot areas, but also the further promotion of these policies. This study uses A-share listed enterprises from 2005 to 2019 and creates a multi-period difference-in-differences model to explore the impact of low-carbon city pilot policies on corporate green technology innovation from multiple dimensions. Results show that (1) low-carbon city pilot policies stimulates the green technological innovation of enterprises as manifested in their application of green invention patents; (2) the introduction of pilot policies is highly conducive to green technological innovation in eastern cities and enterprises in high-carbon emission industries; and (3) tax incentives and government subsidies are important fiscal and taxation tools that play the role of pilot policies in low-carbon cities. By alleviating corporate financing constraints, these policies effectively promote the green technological innovation of enterprises. This study expands the research on the performance of low-carbon city pilot policies and provides data support for a follow-up implementation and promotion of policies from the micro perspective at the enterprise level.

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A Techno-Economic Evaluation of Municipal Solid Waste (MSW) Conversion to Energy in Indonesia

Sustainability ◽

10.3390/su13137232 ◽

2021 ◽

Vol 13 (13) ◽

pp. 7232

Author(s):

Muhammad Mufti Azis ◽

Jonas Kristanto ◽

Chandra Wahyu Purnomo

Keyword(s):

Economic Evaluation ◽

Municipal Solid Waste ◽

Solid Waste ◽

Energy Recovery ◽

Capital Investment ◽

Electricity Price ◽

Waste To Energy ◽

Operational Cost ◽

Internal Rate Of Return ◽

Sensitive Factor

Municipal solid waste (MSW) processing is still problematic in Indonesia. From the hierarchy of waste management, it is clear that energy recovery from waste could be an option after prevention and the 5R (rethink, refuse, reduce, reuse, recycle) processes. The Presidential Regulation No 35/2018 mandated the acceleration of waste-to-energy (WtE) plant adoption in Indonesia. The present study aimed to demonstrate a techno-economic evaluation of a commercial WtE plant in Indonesia by processing 1000 tons of waste/day to produce ca. 19.7 MW of electricity. The WtE electricity price is set at USD 13.35 cent/kWh, which is already higher than the average household price at USD 9.76 cent/kWh. The capital investment is estimated at USD 102.2 million. The annual operational cost is estimated at USD 12.1 million and the annual revenue at USD 41.6 million. At this value, the internal rate of return (IRR) for the WtE plant is 25.32% with a payout time (PoT) of 3.47 years. In addition, this study also takes into account electricity price sales, tipping fee, and pretreatment cost of waste. The result of a sensitivity analysis showed that the electricity price was the most sensitive factor. This study reveals that it is important to maintain a regulated electricity price to ensure the sustainability of the WtE plant in Indonesia.

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What Motivates Local Sustainability Policy Action in China? The Case of Low-Carbon City Pilot Program

Urban Affairs Review ◽

10.1177/1078087421995241 ◽

2021 ◽

pp. 107808742199524

Author(s):

Zhilin Liu ◽

Jie Wang ◽

Craig W. Thomas

Keyword(s):

Urban Governance ◽

Empirical Studies ◽

Pilot Program ◽

Low Carbon ◽

Policy Action ◽

Industrial Growth ◽

Horizontal Competition ◽

Local Sustainability ◽

Low Carbon City ◽

Sustainability Policy

An increasing volume of literature has sought to identify factors that motivate cities to pursue sustainability and adopt climate policies. However, most empirical studies were done in Western countries, where relatively high local autonomy and low pressure on industrial growth create conditions for spontaneous policy innovations in sustainability. This paper uses China’s Low-Carbon City Pilot Program as a case to investigate motivations for local sustainability actions in an authoritarian context. Our event history analyses confirm the effects of multi-level governance on local sustainability initiatives in China, particularly horizontal competition across jurisdictions, priorities and preferences of upper-level authorities, as well as local determinants including leadership, capacity, politics, and environmental stress. The findings contribute to the comparative urban governance scholarship by highlighting the unique feature of “experimentation under hierarchy” in shaping urban sustainability policymaking in China.

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