A preliminary study on cooking oil waste management in Hong Kong

1998 ◽  
Author(s):  
Yip-wai, Edward Chan
Keyword(s):  
Hong Kong ◽  
Waste Management ◽  
Cooking Oil ◽  
Preliminary Study

scholarly journals Strategies for Effective Waste Reduction and Management of Building Construction Projects in Highly Urbanized Cities—A Case Study of Hong Kong

Buildings ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 214
Author(s):  
Ann T. W. Yu ◽  
Irene Wong ◽  
Zezhou Wu ◽  
Chi-Sun Poon
Keyword(s):  
Hong Kong ◽  
Waste Management ◽  
Construction Projects ◽  
Management Practices ◽  
Green Building ◽  
Waste Reduction ◽  
Government Support ◽  
Design Stage ◽  
Construction Waste ◽  
Waste Management Practices

Hong Kong is a densely populated city with high-rise developments, and as in other metropolitan cities, the amount of waste generated from construction projects in the city is increasing annually. The capacity of existing landfills is expected to be saturated by the 2020s. Construction waste management has been implemented for years but the performance is still not satisfactory. The aim of this research paper is to explore and formulate strategies and measures for effective construction waste management and reduction in highly urbanized cities such as Hong Kong. A desktop study on construction waste management practices was carried out for a preliminary understanding of the current situation in Hong Kong. Semistructured interviews and focus group meetings were further conducted to shed light on how to improve construction waste reduction and management in Hong Kong. The main contributions of this research study are the potential short-term, medium-term, and long-term strategies, which are related to the design stage, tender stage, construction stage, and government support. The five major strategies recommended are financial benefits to stakeholders, public policies in facilitating waste sorting, government supports for the green building industry, development of a mature recycling market, and education and research in construction waste minimization and management.

Preliminary study of Hong Kong rainfall

1996 ◽  
Vol 30 (13) ◽  
pp. 2453-2454 ◽  
Author(s):  
P.A. Tanner ◽  
S.C. Cheung ◽  
K.Y. Cheung ◽  
L.M. Ho ◽  
F.P. Kan ◽  
...  
Keyword(s):  
Hong Kong ◽  
Preliminary Study

A Preliminary Study of the 20-m Multistage Shuttle Run as a Predictor of Peak VO2 in Hong Kong Chinese Students

1993 ◽  
Vol 5 (1) ◽  
pp. 42-50 ◽  
Author(s):  
Anthony Barnett ◽  
Lawrence Y.S. Chan ◽  
Lain C. Bruce
Keyword(s):  
Hong Kong ◽  
School Environment ◽  
School Setting ◽  
Chinese Students ◽  
Hong Kong Chinese ◽  
Practical Application ◽  
Maximal Speed ◽  
Preliminary Study ◽  
Run Speed ◽  
Shuttle Run

The purpose of the present study was to determine the validity of the 20-meter multistage shuttle run (MSR) for predicting peak VO2 in Hong Kong Chinese students, ages 12–17 years. Fifty-five subjects, 27 boys and 28 girls, performed the MSR in the school environment and had peak VO2 determined in the laboratory. A correlation of 0.72 (p<0.001) was found between peak VO2 and predicted peak VO2 using an equation previously developed with Canadian children (6). However, maximal shuttle run speed alone was a better predictor in this group (r=0.74, SEE=4.6 ml · kg−1·min−1, p<.001). Multiple-regression analysis (best-subsets) was performed and the best predictor variables were maximal speed and sex with either triceps skinfold or weight. For practical application in the school setting, the equation peak VO2 = 24.2 − 5.0(sex) − 0.8(age) + 3.4(maximal speed) (r=0.82, SEE=4.0), where for sex, male = 0 and female = 1, is suggested.

Effect of Variable Compression Ratio on Performance and Emissions in Compression Ignition Engine Fuelled with Waste Cooking Oil with Copper Oxide Nano Fluid Blends

2021 ◽  
Vol 13 (3) ◽  
Author(s):  
Durai Kumaran ◽  
S.P. Sundar Singh Sivam
Keyword(s):  
Waste Management ◽  
Copper Oxide ◽  
Compression Ratio ◽  
Alternative Fuels ◽  
Waste Cooking Oil ◽  
Compression Ignition ◽  
Variable Compression Ratio ◽  
Cooking Oil ◽  
Nano Fluids ◽  
Variable Compression

One of the challenging issues in the world today is waste management. Improper waste management could be the main source of environmental pollution. In this context, an attempt has been made to prevent the disposal of large quantities of Waste Cooking Oil (WCO) from hotels and restaurants and utilize them as a fuel in diesel engines. WCO is one of the viable alternative fuels, used by researchers in Compression Ignition (CI) engines due to its low cost, no toxicity, biodegradability and renewability. In this research, copper oxide (CuO) nano fluids were prepared by an one-step chemical synthesis method in different mass fractions of 15 ppm, 25 ppm, 35ppm and 50 ppm and blended with WCO. Based on the fuel stability, WCOCN25 and WCOCN50 test fuels are considered. The diesel and WCO were considered as base fuels. A fully equipped, single cylinder, four stroke, water cooled, direct injection, variable compression ratio diesel engine was used for experimentation. The compression ratio of the engine was varied from 16:1 to 18:1. The engine was loaded at different loading conditions by an eddy current dynamometer to measure the performance and emission parameters for the test fuels. The experimental results have shown that the addition of CuO nano fluids and increasing the compression ratio improved the Brake Thermal Efficiency (BTE) of the engine. It is observed that the combustion parameters have been improved due to the higher ignition delay and catalytic activity of CuO nano fluids. In addition, CuO nano fluids have a major role in controlling hydrocarbon (HC), carbon monoxide (CO), oxides of nitrogen (NOx) and smoke emissions.

scholarly journals A Preliminary Study: Identification of Stream Waste Quantity and Composition in Bali Province, Indonesia

2020 ◽  
Vol 148 ◽  
pp. 05005
Author(s):  
I Made Wahyu Widyarsana ◽  
Enri Damanhuri ◽  
Nida Ulhusna ◽  
Elprida Agustina
Keyword(s):  
Waste Management ◽  
Organic Waste ◽  
Management Policy ◽  
Waste Generation ◽  
Waste Streams ◽  
Textile Waste ◽  
Waste Management Policy ◽  
Administration Method ◽  
Preliminary Study ◽  
Waste Flow

Bali Province is an island of high tourist activity surrounded by the sea. Without a proper mainland waste management, waste problem will impact the aquatic environment. River and beach are waterways that become an important role in the waste flow that will end to the sea. Identification of waste in rivers and beaches is needed to determine the stream waste management policy. Measurements were made by adopting the NOAA (National Oceanic and Atmospheric Administration) method on 4 rivers and 4 beaches. Measurement of waste generation and composition represents the watershed and population density classification groups. The peak hour for the waste streams at 11.00-14.00 WITA (GMT+8). The dominant waste is organic waste (59.10% WW) and hazardous waste (17.12%WW). From the waste measurement on the beach, the waste density is around 0.087 tonnes/m3 and the composition of waste is dominated by plastic waste, paper waste, and textile waste. The average waste density in beach is around 0.007 kg/m2 or 0.53 items/m2. Yeh Gangga Beach is the dirtiest with 0.64 items waste/m2 and Lepang Beach is the cleanest beach with 0.27 items/m2.

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