Pengaruh konsentrasi limbah cair tapioka terhadap pertumbuhan dan Kadar Lipid yang dihasilkan oleh Mikroalga Scenedesmus Sp

ABSTRAK

Krisis energi yang seclang melanda dunia saat ini, merupakan masalah yang harus segera ditanggulangi. Eksploitasi secara terus-menerus terhadapbahan bakar fosil yang merupakan energi tak terbarukan (unrenewable energy) mengakibatkan keberadaannya di alam semakin menipis. Di sisi lain permintaan konsumen terhadap bahan bakar ini terus meningkat seiring dengan meningkatnya pertumbuhan ekonomi, pertumbuhan industri,dan produksi kendaraan bermotor. Kenyataan ini tidak sejalan dengan kondisi yang ada bahwa jumlah produksi minyak bumi di dunia pertahun tidak sebanding dengan jumlah permintaan.

Pengarnbilan data penelitian diperoleh dari perhitungan pertumbuhan sel dan uji kadar lipid Scenedesmus sp. tiap perlakuan. Data dianalisa menggunakan metode statistik Rancangan Acak Lengkap (RAL) One Way ANOVA dengan 5 perlakuan pemberian konsentrasi media yang berbeda yaitu l 0%, 20%, 30%, 40%, 50% clan 0% tanpa pemberian konsentrasi media (sebagai kontrol), masing• masing perlakuan diulang sebanyak 3 kali ulangan.

Hasil menunjukkan bahwa perlakuan 0%, 10%, 20%, 30%, 40% dan 50% berpengaruh terhadap pertumbuhan dan kadar lipid Scenedesmus sp. Jika semakin tinggi konsentrasi limbah cair tapioka maka pertumbuhan dan kadar lipid Scenedesmus sp. tinggi. Pertumbuhan Scenedesmus sp. terendah dihasilkan pada konsentrasi 0% dengan nilai rata-rata 1.814.393,667 dan pertumbuhan Scenedesmussp. tertinggi dihasilkan pada konsentrasi 40% clan 50% dengan nilai rata-rata 5.124.999,333 dan 5.268.939, karena pada konsentrasi tersebut pertumbuhan Scenedesmus sp. tidak berbeda nyata seclangkan kadar lipid terendah dihasilkan pada konsetrasi 0% dengan jumlah 19.832% clan tertinggi dihasilkan pada konsetrasi 40% dan 50%, karena pada konsentrasi tersebut kadar lipid yang dihasilkan oleh Scenedesmus sp. tidak berbeda nyata dengan jumlah 31,99133333% dan 32.424%.

ABSTRACT

Energy crisis that is sweeping the world today, is an issue that must be addressed. Continuous exploitation of the fossil fuels which are non-renewable energy (unrenewable energy) resulted in the dwindling presence. On the other hand consumer demand for fuel continues to increase with economic growth, industrial growth, and the production of motor vehicles. This fact is not in line with the existing condition that the amount of oil production in the world per year are not comparable with the number of requests.

Fetching data were obtained from the calculation of cell growth and lipid testing Scenedesmus sp. each treatment. Data were analyzed using statistical methods completely randomized design (CRD) One Way ANOVA with 5 treatments of different delivery media concentration of 10%, 20%, 30%, 40%, 50% and 0% without giving media concentration (as a control), respectively each treatment was repeated 3 times replications.

The results showed that treatment of 0%, 10%, 20%, 30%, 40% and 50% effect on the growth and lipid content of Scenedesmus sp. If the higher concentration of tapioca liquid waste then growth and lipid levels Scenedesmus sp. high. Growth of Scenedesmus sp. produced at the lowest concentration of 0% with a mean value and growth 1814393.667 Scenedesmus sp. produced the highest concentration of 40% and 50% with a mean value 5124999.333 and 5,268,939, due to the concentration of the growth of Scenedesmus sp. not significantly different, while the lowest lipid concentration resulting in 0% to 19,832% and the highest amount produced in concentrations of 40% and 50%, due to the concentration of the lipid produced by Scenedesmus sp. not significantly different from the number 31.99133333% and 32,424%.