Abstract
This study focused on the household solid waste characteristics and recycling behavior modeling. The authors surveyed 150 households in 6 urban districts of Da Nang city, Vietnam. Three surveys were carried out by household; a questionnaire survey, a measurement survey, and a composition survey. The questionnaire included attribute, participation in recyclables/leftover food separation, environmental attitude. The waste amount was separately measured by 66 categories daily for 10 days.
The average of HSW generation rate was 231.5 g/cap/day. Compostable waste accounted for 73.0% of total, and recyclable accounted for 13.8% of total. The participation rates of leftover and recyclable separation were 77.3% and 84.1%, respectively. Plastic bottle and Metal can were two popular items with higher recycling rates (72.5% and 63.8%, respectively). The leftover food was recovered mainly by pig farmer (64.1%). Leftover food collection by pig farmer was more popular in suburb districts. For the purpose of recyclable separation, citizens gave recyclables to junk-buyers or waste collection workers for free (53.6%). The structural models for leftover food separation and recyclable separation were developed to clarify the positive and negative factors. From the obtained results, some suggestions were given in order to improve the participation rate on recycling.
