Abstrak Predikat SMKN 3 Boyolangu sebagai Sekolah Adiwiyata, tentu menjadi motivasi bagi warga sekolah untuk menjadi pelopor gerakan peduli lingkungan. Namun fakta lapangan menunjukan adanya temuan masalah keterlibatan siswa belum nyata, terutama masalah efektifitas IPAL B3.Telaah penelitian relevan, belum ditunjukan metoda pengolahan limbah pencucian PCB yang sederhana, bernilai ekonomis, dan memenuhi prinsip 3R. Umumnya rumit dan mahal.Demikian pula hasil penelitian terdahulu oleh penulis yang sama, belum memenuhi prinsif 3R dan belum cukup bisa dipertanggungjawabkan. Penulis termotivasi melakukan penelitian lanjutan sebagai koreksi dari penelitian sebelumnya.Penelitian bertujuan mengetahui IPAL B3 mampu mencegah pencemaran oleh sebab limbah pencucian PCB, dan mampu memenuhi prinsip 3R. Jenis penelitian adalah penelitian pengembangan. Teknik pengumpulan data menggunakan data pengamatan, teknik analisisnya non statistik.Proses pengolahan limbah dilakukan dengan pemisahan berdasarkan prinsip hasil kali kelarutan, melalui metoda pengendapan bertingkat dengan pengaturan pH. Hasil penelitian menunjukan, IPAL B3 menurunkan kadar logam berat sample dari 29 menjadi 0 mmol/L. Semula pekat, berbau logam, memiliki pH = 0,3 , menjadi jernih, tidak berbau, harga pH = 7,2. Hasil Samping endapan dapat didaur ulang. Dengan demikian dapat disimpulkan, IPAL B3 mampu mencegah pencemaran lingkungan, memenuhi prinsif 3R, dan terbuka untuk dikembangkan sehingga mampu memberikan manfaat lebih dalam kehidupan di bidang pendidikan maupun non pendidikan. Kata Kunci : IPAL B3, PCB Abstract Predicate SMKN 3 Boyolangu as Adiwiyata School, would be a motivation for school residents to be a pioneer of environmental care movement. However, field facts indicate the findings of student involvement problems have not been real, especially the problem of IPAL B3 effectiveness.Relevant research studies have not yet been demonstrated for the simple, economically viable method of processing PCB washing wastes, and complying with the 3R principles. Generally complicated and expensive. Similarly, the results of previous research by the same author, has not met the 3R prinsif and not enough can be accounted for. The author is motivated to do further research as a correction of previous research.The objective of this research is to know that IPAL B3 is able to prevent pollution caused by PCB washing waste, and able to fulfill the 3R principle. The type of research is development research. Technique of collecting data using observation data, non statistical analysis technique.The waste treatment process is carried out by separation based on the principle of solubility product, by a multilevel precipitation method with pH adjustment. The results showed that IPAL B3 decreased the weight of the sample weight from 29 to 0 mmol / L. Originally dense, smelling metal, has a pH = 0.3, became clear, odorless, the price of pH = 7.2. The sludge can be recycled. Thus it can be concluded, IPAL B3 able to prevent environmental pollution, fulfill the 3R prinsive, and open to be developed so as to provide more benefits in life in the field of education and non-education. Keywords: IPAL B3, PCB.
INSTRUMEN HOTS MATEMATIKA BAGI MAHASISWA PGSD