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ABSTRAK
Penelitian ini bertujuan untuk menentukan jenis bahan baku biochar yang terbaik dalam mengurangi pencemaran logam berat Cd di tanah. Penelitian dilakukan di laboratorium menggunakan rancangan acak lengkap (RAL) non faktorial dengan perlakuan kontrol, 3 jenis biochar dari bahan baku yang berbeda meliputi brangkasan jagung, jerami padi dan TKKS, sebanyak 5 ulangan. Parameter yang diamati adalah pH H2O, pH KCl, Cd ekstrak DTPA. Hasil penelitian menunjukkan bahwa ketiga jenis biochar mampu meningkatkan pH H2O, pH KCl tanah.Cd ekstrak DTPA menurun secara nyata akibat pemberian biochar jerami padi dan TKKS, kecuali biochar brangkasan jagung. Kapasitas serapan biochar terhadap logam berat Cd diurutkan dari yang terbesar hingga terkecil adalah biochar TKKS, biochar jerami padi dan biochar brangkasan jagung.
Kata kunci : Biochar, Cd
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The aim of the research was to determine the type of biochar feedstock is best in reducing the pollution of heavy metals Cd on the ground. The research was conducted in laboratory using a complete randomized design (RAL) non factorial with treatments : control, 3 types of biochar from different raw materials including corn stover, rice straw and TKKS, 5 replications. Parameters measured were pH H2O, pH KCl, Cd extracted with DTPA. The results showed that the
three types of biochar were able to increase the H2O pH and KCl pH. Cd extracted with DTPA decreased significantly due to rice straw biochar and TKKS, except corn stover biochar. Biochar uptake capacity of heavy metals Cd sorted from the largest to the smallest is the biochar TKKS, rice straw biochar and biochar corn stover.
Keywords: Biochar, Cd
