Serapan Logam Berat Merkuri (Hg) oleh Tumbuhan Mangrove dengan Pendekatan Dynamics System di Muara Sungai Wonorejo

Qonita, Anis Zusrin (2022) Serapan Logam Berat Merkuri (Hg) oleh Tumbuhan Mangrove dengan Pendekatan Dynamics System di Muara Sungai Wonorejo. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Tingginya angka jumlah industri menimbulkan berbagai permasalahan lingkungan. Konsentrasi logam berat merkuri (Hg) di Kali Jagir didapatkan sebesar 0,000015-0,000033 ppm. Salah satu upaya yang dapat dilakukan untuk mengurangi dan mengendalikan hal tersebut yaitu dengan proses serapan menggunakan tumbuhan. Penelitian ini menggunakan dynamics system dengan model yang mempertimbangkan faktor kompleks di dalam sistem dan memperhatikan waktu. Analisis dinamika sistem diawali dengan pembuatan konsep lalu pembuatan Causal Loop Diagram, membuat Stock Flow Diagram dan melakukan simulasi model serta validasi. Aspek yang dikaji dalam penelitian ini yaitu konsentrasi Hg di sungai, sedimen muara, akar, batang, dan daun mangrove. Hasil dari penelitian ini adalah semakin meningkat rata-rata pasang air laut dan semakin meningkat laju kenaikan konsentrasi Hg, semakin meningkat juga konsentrasi Hg. Konsentrasi Hg akan menurun jika ekstraksi Hg pada air dan sedimen meningkat. Proses ekstraksi dipengaruhi tinggi rendahnya faktor biokonsentrasi. Sedangkan penyebaran logam Hg pada bagian tumbuhan dipengaruhi oleh tinggi rendahnya faktor translokasi. Berdasarkan simulasi,konsentrasi Hg di Muara Sungai Wonorejo pada tahun 2030 sebesar 0,00041 ppm. Sedangkan konsentrasi Hg dengan mangrove Avicennia alba, Avicennia marina, Sonneratia Caseolaris dan Rhizophora Stylosa berturut-turut sebesar 0,02174 ppm, 0,009591 ppm, 0,0589 ppm, 0,001961 ppm. Uji verifikasi dan validasi model menunjukkan nilai mean comparison ≤ 5% yaitu 1,35% dan perbandingan variasi amplitudo ≤ 30% yaitu 0,26%. Hal ini membuktikan bahwa model dinamis yang dibuat valid. Penanaman mangrove yang dapat dilakukan untuk mendapatkan hasil optimal dalam remediasi logam berat Hg dari wilayah darat hingga laut berturut-turut yaitu Avicennia Alba dan Sonneratia Caseolaris, Rhizophora Stylosa, Avicennia marina.
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The high number of industries causes various environmental problems.The concentration of heavy metal mercury (Hg) in Jagir River was obtained at 0.000015-0.000033 ppm. One of the efforts that can be done to reduce and control this is the absorption process using plants. This study uses a dynamics system with a model that considers complex factors in the system and pays attention to time. System dynamics analysis begins with conceptualizing and then making Causal Loop Diagrams, making Stock Flow Diagrams and performing model simulations and validations. The aspects studied in this study were the concentration of Hg in rivers, estuary sediments, roots, stems, and leaves of mangroves.
The result of this research is that the higher the average tide and the higher the rate of increase in the concentration of Hg, the higher the concentration of Hg. The concentration of Hg will decrease if the extraction of
Hg in water and sediment increases. The extraction process is influenced by the level of bioconcentration factors. Meanwhile, the distribution of Hg metal in plant parts is influenced by the level of the translocation factor. Based on the simulation, the concentration of Hg in the Wonorejo River Estuary in 2030 is 0.00041 ppm. While the concentration of Hg with Avicennia alba, Avicennia
marina, Sonneratia caseolaris and Rhizophora stylosa mangroves were 0.02174 ppm, 0.009591 ppm, 0.0589 ppm, 0.001961 ppm, respectively. The model verification and validation test shows the mean comparison value 5%,
which is 1.35% and the amplitude variation ratio 30%, which is 0.26%. This proves that the dynamic model created is valid. Mangrove plantings that can be carried out to obtain optimal results in the remediation of heavy metal Hg from
land to sea areas are Avicennia alba and Sonneratia caseolaris, Rhizophora stylosa, Avicennia marina.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	dinamika sistem, serapan mangrove, logam berat merkuri, muara Sungai Wonorejo, dynamics system, uptake mangrove, heavy metal mercury, Wonorejo River estuary
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD878.47 Soil remediation
Divisions:	Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Environmental Engineering > 25101-(S2) Master Thesis
Depositing User:	Anis Zusrin Qonita Qonita
Date Deposited:	14 Feb 2022 01:17
Last Modified:	14 Feb 2022 01:17
URI:	http://repository.its.ac.id/id/eprint/93811

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