Browsing by Author "Liu, C"

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item: Conference-Full-text
Beyond the reuse: Potentials and barriers for exchanging treated wastewater among the industries in Sri Lanka.
(2022-06-24) Mallawaarachchi, H; Sandanayake, YG; Karunasena, G; Liu, C; Sandanayake, YG; Gunatilake, S; Waidyasekara, KGAS
A major drawback in the present industrial system is that the industries are directly discharging industrial effluent to nearest waterbodies in a linear way. Even though, a few of industries have considered reusing treated and untreated wastewater in their industrial premises, it can be further extended towards ‘exchange’ among the multiple industries under the concept of Industrial Symbiosis (IS). Initiating IS-based treated wastewater exchange networks is a novel approach to Sri Lankan industries and there is a lack of a study on potentials and barriers of implementing the concept. Hence, this research aimed to investigate the potentials and barriers for exchanging treated wastewater among industries. In order to achieve the aim, 16 semi-structed interviews were conducted with industry experts in the field of Industrial Water Management (IWM) to collect the data. Code-based content analysis technique was used to analyse the data by applying QSR NVivo.12 software. Findings revealed geographical proximity of industries, willingness of industries to engage in water exchange and industry level water management initiatives as major potentials for initiating water exchange networks. Lack of expected water quality for industrial needs, outdated technologies used in water management and lack of expertise and awareness were identified as major barriers. Accordingly, strategies, such as introducing national policy enhancements, ensuring cultural adaptation, enhancing technology & infrastructure, and empowering research & development, were proposed to overcome the identified barriers to ensure a successful implementation of treated wastewater exchange networks targeting the socioeconomic development of the country
item: Conference-Full-text
Influence of behavioural constructs on building practitioner’s minimal compliance with residential building energy performance standards in Australia
(Department of Building Economics, 2024) Lu, Y; Karunasena, G; Liu, C; Sandanayake, YG; Waidyasekara, KGAS; Ranadewa, KATO; Chandanie, H
Energy performance standards for residential buildings are essential in promoting the residential building industry’s energy efficiency. Dwellings are commonly designed at the standards’ minimum compliance level, which puts the industry at risk of achieving its energy-efficiency goal. One of the causes of this minimal compliance is related to building practitioners’ behavioural constructs during the compliance process: Attitudes (ATT), Subjective Norms (SN), Perceived Behavioural Control (PBC) and Personal Norms (PN). This paper aims to investigate how these behavioural constructs influence minimal compliance. The data are drawn from a questionnaire survey of 73 residential building practitioners who actively deal with compliance requirements in the design stage in Australia. A framework predominantly based on the Theory of Planned Behaviour was analysed via structural equation modelling technique to illustrate the influence paths of the behavioural constructs and the extent of the influence. The results show that SN, PBC and PN positively influence behavioural intention, then the intention positively influences minimal compliance outcome. Furthermore, ATT shows the strongest extent in influencing the minimal compliance outcome, while exhibiting the lowest current performance. These findings inform policymakers of suitable interventions to trigger behaviour change toward going beyond minimal compliance. By illustrating the pathways and the degree to which behavioural constructs influence minimal compliance, policymakers can be more effectively guided on appropriate interventions to encourage behaviour change that exceeds minimal compliance.
item: Conference-Abstract
Initiating industrial symbiosis (IS) networks in Sri Lanka : insights from global projects
(2021-07) Mallawaarachchi, H; Karunasena, G; Sandanayake, YG; Liu, C
Industrial symbiosis (IS) is an ideal initiative for co-located industries to gain a competitive advantage through physical exchange of materials, energy, water, and by-products within a closed loop industrial system. IS has been created a considerable impact on the environmental and economic development through water savings, reduction of raw material extraction and carbon emissions reductions. As many developing countries are suffering from the environmental degradation due to industrial operations, initiating IS networks is vital to improve the business and environmental performance of industries. Since it is a novel concept, it is important to examine the insights from global IS projects to foresee the future challenges. Thus, in this study, PESTEL framework is employed to examine the impact of political, economic, social, technological, environmental and legal external factors on global IS projects. The secondary data collected from nine global IS projects were analysed using PESTEL analysis. The analysis clearly describes the several facets that could influence on industries deploying the IS networks, such as the pressure made by government, external parties, collective cost and environmental benefits, infrastructure sharing, social benefits, and influence made by laws and regulations. Accordingly, a PESTEL framework is developed, which provides a firm base to foresee the possible future changes, challenges and opportunities that can be effectively considered in strategic business decisions for deploying IS networks in Sri Lanka.
item: Conference-Full-text
Optimising the industrial symbiosis (is): the proposed redevelopment
Mallawaarachchi, H; Sandanayake, YG; Karunasena, G; Liu, C
Industrial symbiosis (IS) has been emerged aiming the integration of industrial complexes, in which by-products of materials and energy are using as feedstock instead of being wasted. Since organisations cooperatively increase their mutual sustainable benefits simultaneously through IS, a number of IS projects have been initiated across the whole world. However, most of the projects have been failed and discontinued in long term undermining the expected collaborative gains and efficiencies. Hence, recent studies articulate the necessity of having a standardised mechanism towards implementing the resource efficiency optimised IS designs. Thus, this paper aims to present the issues in the current process of IS development in order to propose a mechanism for redeveloping the process through resource flow efficiency optimisation. A systematic review of key literature was conducted in the areas of IS, its design and implementation procedures. The data collected through the secondary survey was then analysed manually to identify the different stages of the IS development process and related issues. As many scholars recognised, most of IS projects have been discontinued due to the shortcomings and the inefficiencies of the IS development process. Thus, the necessity of having a standardised and more robust model for optimising IS is recognised. Finally, the proposed redevelopment is conceptualised by introducing a new phase of re-evaluation and optimisation modelling to evaluate the symbiosis relationships prior implementation to consider them either for implementing or for replanning.