Kajian penerapan 3R dan potensi refuse derived fuel sampah plastik serta peluang pengelolaan sampah kemasan plastik di area pemukiman (studi kasus Apartemen Kalibata City dan Perumahan Kalibata Indah Jakarta Selatan) = Study of 3R application and potential of refuse derived fuel of plastic waste and opportunity of plastic packaging waste management in residential area case study kalibata city apartment and Kalibata Indah Residence South Jakarta