Browsing by Author "Liyanage, KLAKT"

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item: Conference-Full-text
Biogas as a sustainable energy management and solid waste management solution for residential apartments
(2019) Dhanapala, ERGEM; Waidyasekara, KGAS; Liyanage, KLAKT; Samarawickrama, S
In the current global context, attention is being paid towards the sustainability. Moreover, there are many energy sector challenges, which are getting more critical day by day. In order to overcome from such critical energy issues, different strategies are identified by several researchers in the built environment. One such strategy is use of biogas, which advances waste management and it also helps to reduce the solid waste management issues pertaining in the current society due to lack of waste dumping yards. Hence, this paper aims to present the potential of implementing biogas for the apartment buildings as a sustainable energy and waste management solution. Qualitative approach was followed along with the case study strategy. Seven cases were selected for the study purpose. Solid waste types, source of solid waste, waste management procedure of the apartment buildings were identified. Further, under biogas implementation in apartment buildings, benefits, barriers and strategies to overcome from the identified barriers were discussed. The results suggest that effective implementation of biogas system for apartment buildings is a precise solution not only for waste management issue but also for non-renewable energy issues faced by Sri Lanka
item: Conference-Full-text
Enabling zero waste concept in the construction industry: a literature review
(Ceylon Institute of Builders, 2018-06) Liyanage, KLAKT; Waidyasekara, KGAS; Mallawaarachchi, H; Sandanayake, YG; Gunatilake, S; Waidyasekara, KGAS
The construction industry is one of the leading economic players in any region. However, the continuous construction and demolition activities have resulted in the generation of Construction and Demolition (C&D) waste. C&D waste management in the construction industry is still at an adolescent stage where effective reduction of C&D waste is considered as a challenging issue confronted by many economies in the world. Improper waste management has led to several issues related to environmental, economic, and social over the past years. Thus, C&D waste management is considered as a persuasive issue to be addressed. The “Zero Waste” concept has emerged as a solution to eliminate the C&D waste, which eradicates waste at the source and throughout the period of the construction activity. Many researchers have mentioned that efficient material management or waste minimisation plan is an essential process in zero waste. In this process, it is pertinent to consider the potential of which materials may generate less waste, re-useable, or recyclable, i.e., diverting materials from disposal to reuse or recycling during the construction. However, limited studies are available on zero waste management in construction industry. Therefore, this paper aims to review the importance of zero waste concept to the construction industry by critically reviewing the secondary data on waste management studies conducted in the construction industry. The paper further discusses the types of C&D waste, impacts of C&D waste, origins and causes of waste, the zero-waste concept, and the importance and its application in the construction industry. Strategies, enablers, and barriers to implementing zero waste are discussed, and finally, a conceptual framework is developed to achieve Zero Waste in the construction industry.
item: Conference-Full-text
Implementation of SCL protocol to ensure the construction sustainability during the execution stage
(2020-11-06) Mayoorasakithian, T; Abeynayake MDTE; Liyanage, KLAKT
In the Sri Lankan construction industry, the wrong industry practices and undefined areas about delay and disruption in the contract causes the disputes. Significantly, the disputes cause controversial issues in the quality of the working relationship. Accordingly, the negative impact on the working relationship affects construction sustainability during the execution stage. Here, the implementation of the SCL protocol for the claim management would overcome the above mentioned problem. The aim of the research was designed with modifying the SCL protocol to best suit the Sri Lankan claims management and hence to improve quality of working relationship. Thus, the expert interviews from five experts set out the feasibility and practicability of the SCL protocol in Sri Lanka. Here, the experts having more than 10 years of experience in claims management were selected through snowball sampling and the collected data was analysed through code based content analysis using NVivo. Finally, the suggestions for the modification of the core principles in SCL protocol to match with the current Sri Lankan practices and the practical difficulties to implement the SCL protocol were determined. Ultimately, the modification and implementation of the SCL protocol together would enhance the construction sustainability during the execution stage.
item: Conference-Full-text
Zero landfill framework for apparel industry solid waste
(Ceylon Institute of Builders, 2018-06) Liyanage, KLAKT; De Silva, N; Sandanayake, YG; Gunatilake, S; Waidyasekara, KGAS
Apparel industry being one of the key economic players, mass production of textile and apparel take place, resulting in a considerable amount of solid waste generation which ultimately ended up in landfills. Shortfalls in solid waste management has created several issues related to environmental, economic and social and thus it has become a burning issue. Therefore, innovative approaches are timely, needed to overcome this national problem. The Zero landfill concept has been identified as one of the innovative approach. Therefore, this research is focused to study the applicability of the Zero landfill concept to the Sri Lankan Apparel industry. For the study, conceptual framework for zero landfilling was developed and further three case studies were selected for the identification of suitability of the framework for the solid waste management in the apparel industry. Documentary evidences, interviews with experts were carried out to achieve the relevant data. The study revealed that industry generates main types of solid waste, such as, fabric, paper, cardboard, food waste and considerable amount of such waste can be managed through this proposed framework. A considerable amount of plastic and polythene waste ended up in landfills causing difficulties in achieving zero landfill concept for the apparel industry. With the expert opinions, it was confirmed that zero landfill concept can be achieved in the apparel industry by zero landfilling of plastic and polythene waste. Thus, the zero-landfilling concept can be implemented successfully in the country. Further, as landfilling has become a burning issue in the Sri Lankan context, the Zero landfilling concept is a vibrant solution to eliminate the solid waste landfilling.