EFEKTIFITAS TANAMAN MANGROVE RHYZOPORA MUCRONATA DAN BAKTERI DALAM MENURUNKAN KADAR SALINITAS AIR PAYAU DI DESA SEDATI KABUPATEN SIDOARJO

Kenaikan muka air laut dapat menyebabkan terjadinya intrusi air laut, menyebabkan pencemaran air tanah. Pencemaran air tanah yang dimaksud adalah merembesnya air laut yang
memiliki kadar klorida (Cl) sehingga dapat merusak ekuifer air tawar. Tujuan dilakukan penelitian ini adalah pemanfaatan teknologi biodesalinasi sebagai teknologi yang meyediakan air tawar yang dibantu oleh tanaman mangrove Rhyzopora mucronata dan bakteri (Bacillus mycoides dan Pseudomunas aeruginosa). Penelitian ini dilakukan menggunakan metode eksperimental. Penelitian ini menggunakan 4 reaktor, P0 reaktor kontrol, Reaktor P1 diberi tanaman mangrove (Rhyzopora mucronata) Reaktor P2 diberi tanaman mangrove (Rhyzopora mucronata) dan bakteri (Bacillus mycoides dan Pseudomunas aeroginosa). Reaktor P3 ditambahkan bakteri (Bacillus mycoides dan Pseudomunas aeroginosa). Volume air payau yang digunakan pada tiap reaktor adalah 13 L dan penambahan bakteri 300 ml, pengambilan sampel sebanyak 5 ml dengan 3 kali pengulangan. Hasil analisi setiap reaktor mengalami penurunan. Nilai efesiensi terbesar pada reaktor P2 sebesar 26% dan nilai efektifitas terbesar pada reaktor P2 sebesar 17,81 ⁰/₀₀. Reaktor terbaik dalam menurunkan kadar salinitas air payau adalah reaktor P2
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Sea level rise can cause sea water intrusion, causing groundwater pollution. Groundwater pollution in question is the seepage of seawater which has chloride (Cl) levels so that it can damage freshwater equifers. The purpose of this research is the use of biodesalination technology as a technology that provides fresh water assisted by mangrove plants Rhyzopora mucronata and bacteria (Bacillus mycoides and Pseudomonas aeruginosa). This research was conducted using an experimental method. This study used 4, P0 reactors for control reactors, P1 reactors were fed with mangroves (Rhyzopora mucronata) P2 reactors were fed with mangrove plants (Rhyzopora mucronata) and bacteria (Bacillus mycoides and Pseudomonas aeroginosa). The P3 reactor was fed with bacteria (Bacillus mycoides and Pseudomunas aeroginosa). The volume of water used in each reactor is 13 L and the addition of bacteria is 300 ml, sampling is 5 ml with 3 repetitions. The results of the analysis of each reactor decreased. The greatest efficiency value in the P2 reactor is 26% and the greatest effectiveness value in the P2 reactor is 17.81 /₀₀. The best reactor in reducing the salinity of brackish water is the P2 reactor