Jingzheng Ren

Jingzheng Ren
The Hong Kong Polytechnic University | PolyU · Department of Industrial and Systems Engineering

The Hong Kong Polytechnic Univeristy

About

192
Publications
37,616
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
6,051
Citations
Introduction
Dr. Jingzheng Ren is currently An Associate Professor at The Hong Kong Polytechnic University, An Adjunct Associate Professor of University of Southern Denmark and an Associated Senior Research Fellow at Institute for Security & Development Policy (Stockholm, Sweden). He is also the Co-Editor-in-Chief of Environment, Development and Sustainability (Springer Nature). He worked as a fulltime Associate Professor at University of Southern Denmark before moving to Hong Kong.
Additional affiliations
March 2018 - present
University of Southern Denmark
Position
  • Professor (Associate)
March 2017 - present
The Hong Kong Polytechnic University
Position
  • Professor (Assistant)
January 2016 - March 2017
University of Southern Denmark
Position
  • Professor (Associate)

Publications

Publications (192)
Article
Hydrothermal gasification (HTG) at supercritical water has been used to convert poultry litter into value‐added products. In this research study, a process simulation model of HTG for syngas from poultry litter has been developed using Aspen Plus software, and it has been validated at four distinct temperature levels. The effects of the three param...
Article
In this paper, a decision-making framework based on process simulation and the fuzzy PROMETHEE II method was proposed to evaluate the performances of the waste management alternatives considering the situation of lacking data and uncertainty. Process simulation and fuzzy multi-criteria decision-making methods were applied to deal with the problem o...
Article
With the development of technology and manufacturing, the conflicts between environment protection, economic interest and social benefit have been awared and paid more attention to in recent years. The sustainability performance has been considered by increasing number of decision makers. In the real-life practice, it will strongly affect the prior...
Article
In order to realize effective sludge treatment as well as energy recovery simultaneously for sustainable urban sludge management, a three-layer optimization model based on mixed-integer programming was proposed to solve the sustainable supply chain design problem. The three layers include wastewater treatment plants, sludge treatment facilities, an...
Article
The objective of this study is to analyze four different poultry litter conversion technologies including fast pyrolysis (FP), slow pyrolysis (SP), anaerobic digestion (AND), and aerobic digestion (AD) in Pakistan, India, and Bangladesh. Strengths, Weaknesses, Opportunities and Threats analysis has been used to analyze these technologies comprehens...
Article
Full-text available
Achieving the 17 United Nations sustainable development goals (SDGs) in China largely depends on the transition of cities towards sustainable development. However, significant knowledge gaps exist in evaluating the SDG index at the city scale and in understanding how to simulate pathways to achieve the 17 SDGs for Chinese cities by 2030. This study...
Article
Reducing emission of conventional vehicle exhaust has many benefits for developing low-carbon cities. The transition from on-road conventional passenger cars to Hydrogen Fuel Cell Vehicles (HFCVs) may enhance air quality and health significantly. Aiming at constructing low-cost and environmentally friendly hydrogen supply networks (HSNs) in urban a...
Article
Sewage sludge is a common waste from wastewater treatment plants in Hong Kong and conventional treatment ways like the landfilling method has been gradually abandoned considering the environmental impacts and costly land. Searching for integrating processes to well treat the sludge simultaneously achieve the energy recovery can be a good alternativ...
Article
A fast and accurate representation of the complex heat and mass transfer processes of closed-wet cooling tower (CWCT) systems for optimal design and management is challenging, especially considering the impact of weather variability. This study develops a systematic approach for the stochastic bi-objective optimization of CWCT systems based on a si...
Article
Full-text available
Lipophilicity, as quantified by the decimal logarithm of the octanol‐water partition coefficient (log KOW), is an essential environmental property. Deep neural networks (DNN) based quantitative structure‐property relationship (QSPR) studies have received more and more attention because of their excellent performance for prediction. However, the bla...
Article
Alleviating energy poverty is a significant issue in many countries, for which effective energy poverty measurement is the prerequisite. This paper seeks to make a comprehensive and systematic assessment of the energy poverty performance of 30 provinces in China for 11-year period (2007–2017) by emphasizing their spatial-temporal changes. The paper...
Article
The separation of ternary azeotropic systems has received significant interest as it enables the recovery of value-added organic solvents, subsequently contribute towards environmental protection. In this work, we propose a novel approach that involves the conceptual design, multi-objective optimization, and process evaluations for developing two d...
Article
Sustainable process for the separation of ternary azeotropic mixture tetrahydrofuran/ethanol/methanol should be developed to recycle value-added organic components and protect environment. Thereby, in this work, we propose an approach to develop a sustainable process for the recovery of these valuable compounds from their ternary azeotropic mixture...
Chapter
Resource-exhausted cities indicate the cities whose natural resources are exhausting, and whose accumulated exploitation reserves have reached more than 70% of the recoverable reserves. These types of cities could encounter many sustainability risks caused by the resource curse, such as slowing economic development, difficulty in economic transform...
Article
Life cycle sustainability of energy systems has received more and more attentions recently. In order to make an accurate comparison of the sustainability performance of different energy systems and promote the decision-making process, various prioritization methods of energy systems were developed. However, the lack of enough data for decision-maki...
Article
Risk assessment relying on characteristics of chemicals in process industries can prevent accidents caused by flammable and combustible liquids and gases. Whereas its application is limited by the lack of safety-related properties for abundant chemicals of interest, which promotes the demand for accurate predictive models to evaluate inherent safet...
Article
Traffic congestion problems are very common in large municipalities, especially in areas with karst features. Traffic jams happen in many key traffic nodes (such as the bridges across the river and the tunnels through the mountains) frequently, which may lead to severe challenges for the vehicle routing optimization. To effectively solve the routin...
Article
In order to achieve the sustainable separation design of azeotropic mixtures, this study proposed a systematic framework for distillation process optimization and intensification based on a composite sustainability index. Binary minimum azeotropic mixture ethanol-ethyl propionate was studied as an illustrative example. Specifically, three extractiv...
Article
The variety of the energy storage materials and technologies leads to the selection difficulty. To evaluate the overall performance of energy storage technologies, this study proposes sustainability efficiency and sustainability super-efficiency indices. The proposed indices illustrate the integrated performance of energy storages in economic, envi...
Article
This paper introduces a bi-level reduced-order models (ROMs) approach for quickly deciphering the optimal exergy fields in closed wet cooling towers (CWCTs) with consideration of weather variations. First, an efficient sampling method based on stochastic reduced-order model is performed for the approximation of the multivariate probability distribu...
Article
Full-text available
Deep neural networks (DNN) based quantitative structure‐property relationship (QSPR) studies are receiving increasing attention due to their excellent performances. A systematic methodology coupling multiple machine learning technologies is proposed to systematically solve vital problems including applicability domain and prediction uncertainty in...
Article
Rapid industrialization and urbanization stimulate the fast-growth of the urban economy and generate large numbers of wastes and pollutants, which greatly affect environmental quality. In turn, the strict environmental regulation may negatively affect economic development. Thus, the coordination between economic development and environmental qualit...
Article
Sustainability of industrial processes has been a hot spot and draws the attentions of more and more stakeholders, because determining the synthetic sustainability index can help the decision-makers/stakeholders to make informed decisions towards sustainable industrial processes, especially for selecting the most sustainable industrial process amon...
Article
The use of waste heat powered wastewater desalination by coupling an organic Rankine cycle (ORC) with reverse osmosis (RO) has been recognized as a promising solution to desalination. Herein, a tightly-coupled system that allows for optimally customizing the RO-ORC to a background process via heat integration (HI) is developed to minimize the expec...
Preprint
Quantitative structure-property relationship (QSPR) studies based on deep neural networks (DNN) are receiving increasing attention due to their excellent performances. A systematic methodology coupling multiple machine learning technologies is proposed to solve vital problems including applicability domain and prediction uncertainty in DNN-based QS...
Article
It is significant that hazardous properties of chemicals including replacements for banned or restricted products are assessed at an early stage of product and process design. This work proposes a new strategy of modeling quantitate structure–property relationships based on multi-task deep learning for simultaneously predicting four flammability-re...
Article
The energy analysis and optimization of process system aiming to solve the problems of high consumption, low efficiency and unreasonable use of energy in the process of energy utilization has been widely researched and developed in recent decades. In this work, advanced exergy analysis was carried out for the triple-column extractive distillation (...
Article
An energy-efficient triple-column extractive distillation process is developed for recovering tetrahydrofuran and ethyl acetate from industrial effluent. The process development follows a rigorous hierarchical design procedure that involves entrainer design, thermodynamic analysis, process design and optimization, and heat integration. The computer...
Article
As energy security has been an increasingly hot topic in research, a reliable and sound framework for allaying energy security is necessary. In this paper, it establishes a methodological framework based on quantitative and qualitative approaches for measuring and improving energy security from a broad sense. Firstly, it interprets the conceptual f...
Article
Energy security has become one of the growing concerns of many countries as well as the policy makers and decision-makers. This study aims to investigate the energy security performances of 30 Chinese provinces within the period of 2008-2017 by proposing a hybrid model that integrated Fuzzy Best-Worst Method, Data Envelopment Analysis and Assurance...
Article
Hydrogen has been received more and more attentions because of its advantage in terms of low environmental impact and high energy density. However, the sustainability priorities of different hydrogen production pathways have not been determined. To assist the sustainability-oriented selection of hydrogen production pathways, a prioritization framew...
Chapter
This chapter aims to use the fuzzy inference system to aid the decision-makers/stakeholders to select the best renewable energy scenario among multiple alternatives. First the principle of fuzzy set theory and fuzzy inference system has been presented, and then Fuzzy Logic Toolbox of Matlab is used to show how it can be used to select the best scen...
Chapter
As one of the purposes to conduct sustainability assessment of energy systems, providing information on improving system sustainability for decision-makers is crucial. However, the existing literature fails to provide comprehensive information to improve the sustainability from both short-term and long-term perspectives while considering the uncert...
Chapter
Energy systems are popularly studied to maintain and improve the energy supply, which is an essential and irreplaceable element for modern society. With the development of technology, stakeholders need to face more prioritization and optimization problems in the establishment, operation, and maintenance process of the energy system. To make various...
Chapter
Accompanied by the great advances in computer hardware and the widespread commercial application in big data, the artificial intelligence (AI) represented by the machine learning technology has gained popular applications in the past two decades. On the other side, some challenges such as multiscale modeling, simulation, optimization, control, and...
Chapter
The methods in sustainability science play a significant important role for promoting sustainable development. This chapter aims to have a brief review of some major methods in sustainability science including the methods and metrics for sustainability assessment and analysis, the methods for sustainability ranking and prioritization, the ways for...
Article
Here we developed a new method to quantitatively characterize the spatial distribution of the Brønsted acidity of HZSM‐5 zeolite on the crystal grains level indirectly. The Brønsted acid sites of HZSM‐5 zeolite completely covered or blocked by previous coke deposition were released gradually from the outer surface to the center of the crystal grain...
Article
Sustainable water management is key to achieving sustainable development goals. Increasing water consumption prompts industrial plants to implement water conservation projects (WCPs) and improve the utilization efficiency of water resources. In this paper, we develop an integrated graphical method for the implementation of water conservation projec...
Article
Sludge-to-energy technologies can achieve sewage sludge treatment and energy recovery simultaneously. Having a comprehensive assessment for the related technologies can contribute to the decision-making process and sustainable development of sludge management industry. In this paper, a life cycle composite footprint index was proposed, including en...
Chapter
District heating is thought as an important part of future energy system because of the easier accessibility to renewables and waste heat sources. Despite facing the problems such as rapid efficiency improvement in individual heating and energy-saving activities, the overall energy efficiency of district heating is higher than individual heating. W...
Article
In the context of tremendously promoting bioenergy utilization, regional suitability for industrial development of biomass power generation is a critical factor when deploying region-specific strategies. An integrated framework is developed incorporating resource potential, development demands and development conditions to evaluate the suitability...
Article
In this work, a systematic method for conceptual design and multi-objective optimization of an energy-efficient and sustainable reactive/extractive distillation (RED) process is proposed to separate a ternary wastewater mixture with multi-azeotrope tetrahydrofuran/ethanol/water. Conceptual design of the proposed scheme is carried out by the analysi...
Article
Straw power generation (SPG) can not only reduce dependence on coal, but also can convert agricultural waste into energy and alleviate environmental pollution. In order to address the major challenges such as sustainability of the SPG and to provide scientific ground from environmental and economic perspectives, a sustainability assessment model wa...
Article
Aiming at promoting the sustainable development of sludge-to-energy and determining the decision-making process for the most sustainable option among all the scenarios, a novel multi-criteria decision-making method based on Dempster-Shafer (DS) theory and fuzzy best-worst method (FBWM) was developed. Four sludge-to-electricity technologies under un...
Article
Livestock excrements (LEs) are important biomass, whose utilization for energy conversion can potentially ameliorate environmental problems and create economic profits. The integrative benefits contributed by LEs utilization have not been adequately explored especially from life cycle perspective. Due to different levels of husbandry development, L...
Article
Acetonitrile (ACN) and Ethanol (EtOH) are important organic solvents and they are frequently used as mobile phase in high performance liquid chromatography resulting in the production of waste ternary mixture ACN/EtOH/water. The separation of such ternary systems is a key to recovery valuable solvents in waste liquid from views on economic and envi...
Article
Environmental properties of compounds provide significant information in treating organic pollutants, which drives the chemical process and environmental science toward eco-friendly technology. Traditional group contribution methods play an important role in property estimations, whereas various disadvantages emerge in their applications, such as s...
Article
Environmental risk management for chemical plants requires appropriate data resources and decision-making methods. To mitigate environmental risks in industrial operations, technologies and measures should be evaluated based on cost, health, and ecosystem considerations. This work develops an integrated framework for implementing continuous improve...
Article
Incorporation of closed wet cooling tower (CWCT) in the existing circulating water system has been recognized as a viable path to reduce water use in process industry. This paper introduces a specifically tailored framework based on model reductions for multiscale optimization of CWCT-based cooling water system considering environmental variations....
Article
As a sustainable substitute of traditional petroleum refining technology, the biorefinery, which has advantages of higher resource utilization efficiency, better sustainability and lower negative environmental impacts, have developed and applied. However, the variety of developed biorefinery system makes it difficult for decision-makers to determin...
Article
The exploration of control strategy for the double side-stream ternary extractive distillation (denoted as DSTED) process is essential because it has a significant potential for energy-saving. However, how to effectively control the energy-efficient DSTED process is a unique and complex issue due to the additional coupled variables of double side-s...
Article
This study aims to develop a sustainability‐interval‐index (SII) conceptual framework with life‐cycle considerations which can incorporate the opinions/preferences of multiple stakeholders in the complex decision‐making processes and address the decision‐making matrix composed by multiple types of data for multiactor life cycle ranking of industria...
Research
Full-text available
Dear Colleagues, It is my great pleasure, as Guest Editor, to invite you to submit your most recent research on the Special Issue “Circular economy in low-carbon transition”, launched by the open access journal "Energies" (ISSN 1996-1073, IF 2.7). This Special Issue intends to outline a roadmap of circular economy in low-carbon transition, through...
Chapter
Full-text available
Waste-to-energy (WtE) is a key issue of a waste management system. From the perspective of the energy system, WtE will contribute to the development of a low-carbon society. However, due to the lack of reviews of the historical and evolutionary aspects, studies related to WtE have not been comprehensively summarized from either a quantitative or qu...
Chapter
Energy and resources recovery from sewage sludge has become a hot spot due to the high consistency with the requirements for sustainable development. This chapter overviews several sludge-to-energy technologies, including anaerobic digestion (AD), fermentation, microbial fuel cells, pyrolysis, gasification, incineration, and supercritical water gas...
Chapter
Selecting the most sustainable technology for sludge-to-energy among multiple alternatives is vital for promoting the development of resource recovery. This study aims at developing a sustainability assessment framework for the prioritization of sludge-to-energy technologies with the considerations of incompletion and uncertainty problems. The trad...
Chapter
Urban sewage treatment is an irreplaceable part of environment protection and public health. In order to help the stakeholders choose the best scenario for urban sewage treatment, alternative technologies are proposed to wastewater treatment in cities by developing a novel sustainability decision support framework. The proposed methodology is used...
Chapter
Food waste treatment has become an urgent task for many cities. This study aims at providing a life cycle sustainability assessment framework based on the multi-actor multi-criteria decision-making method for prioritizing the alternative technologies for the treatment of food waste. The group best–worst method was developed for determining the weig...
Article
Recently, increasing researches have focused on the intensified heat-integrated triple-column pressure-swing extractive distillation (HITPED) owing to its superiority in economic and environmental benefits than the conventional extractive distillation. However, the dynamic controllability investigation for HITPED was lacking, resulting in the diffi...
Article
Currently, limited efforts have focused on the multi-objective optimization and effective control of the side-stream extractive distillation processes (EDS). Herein, the EDS and a heat-integration scheme (EDSH) are proposed for separating the minimum-boiling azeotropic mixture ethyl acetate (EtAC)-ethanol (EtOH). Firstly, the conceptual design by r...
Article
Stakeholder-oriented multi-objective process optimization based on an improved genetic algorithm, Computers and Chemical Engineering (2019), doi: https://doi. Highlights  The sensitivity analysis can reduce blindness and aimless for an optimization.  The overlapping individuals are deduplicated in the evolutionary.  For two identical descendants...
Article
With the rapid economic growth and urbanization, China is suffering from serious challenges on energy security and the problems regarding waste treatment and emissions mitigation. Converting urban wastes into energy has been recognized as a promising way to achieve circular economy. In this study, combustible waste, food waste, industrial organic w...
Article
The process for producing Fischer-Tropsch syngas (FTS) with the combination of steam and dry methane reforming (operating in parallel) is demonstrated with the most favorable economics. Conventional exergy analysis (CEA) is firstly used to diagnose the part and degree of inefficiency in the process. The energy-saving potential of each equipment and...
Article
As an essential environmental property, octanol-water partition coefficient (KOW) quantifies the lipophilicity of a compound and it could be further employed to predict the toxicity. Thus, it is an indispensable factor should be considered in screening and development of green solvents with respect to unconventional and novel compounds. Herein, a d...
Article
An energy-efficient extractive pressure-swing distillation process is proposed for separating binary minimum azeotropic mixture ethanol and dimethyl carbonate. It can be observed that the minimum amount flow rate of entrainer will be decreased when the operating pressure of extractive distillation column is increased via the thermodynamic feasibili...
Article
Coal fly ash is an industrial solid waste generated from coal preparation during the processing and cleaning of coal for electric power generation. Comprehensive investigation on the reutilization of waste heat of activated coal fly ash is of great economic significance. The method of recovering the waste heat, proposed in this study, is the transf...
Article
This work proposes a stochastic multi-scenario model for the robust design of industrial wastewater desalination under uncertainty. For fully accommodating the diverse nature of wastewater variability, multiple uncertain design parameters consisting of salt concentration, flowrate, and inlet temperature of wastewater are taken into account for the...
Article
2-methoxy-2-methyl-heptane (MMH) plays a key role in reformulated gasoline industry due to fewer environmental impacts than methyl tert-butyl ether. Thus, the design of MMH production process has received substantial attention. In this work, we propose a different pressure thermally coupled reactive distillation (DPTCRD) process for the synthesis o...
Article
Deep learning rapidly promotes many fields with successful stories in natural language processing. An architecture of deep neural network (DNN) combining tree‐structured long short‐term memory (Tree‐LSTM) network and back‐propagation neural network (BPNN) is developed for predicting physical properties. Inspired by the natural language processing i...
Article
The separation of ternary mixtures with homogeneous or heterogeneous multi-azeotropes has received increasing attention. In this work, a systematic design, optimization and control procedure is proposed for extractive distillation of heterogeneous mixtures with four azeotropes. Herein, the ternary system isopropyl alcohol/isopropyl acetate/water is...
Article
Economic growth (EG) and energy consumption (EC) are interacting processes critical to regional sustainability. The evolution mechanism and the nexus between them in the development process of Jing-Jin-Ji Region, which is one of the most important agglomerations in China, remain unrevealed systematically. First, the trends in decoupling state betwe...
Article
The Multiple Effect Evaporator (MEE) system is a typical process for liquor concentration in energy-intensive industries. Many approaches and commercial software have been widely used for MEE simulation and optimization. However, the existing work usually assumes simplified correlations for material thermodynamic properties and evaporator operation...
Article
The improper disposal of agriculture residues (ARs) (such as open burning of straw) in China leads to waste of energy potential and atmospheric environmental problems. Converting ARs to energy is of importance for regional energy and environmental sustainability. In order to help decision-makers select optimal technologies among multiple alternativ...
Article
Distributed energy system (DES) has been recognized as a promising solution for energy security improvement and emissions mitigation all over the world. However, there are usually various DES configurations with different performances, and it is usually difficult for the decision-makers to select the most sustainable DES solution among multiple cho...