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FITOREMEDIASI TANAH — PROSES PENGAMBILAN POLUTAN

FITOREMEDIASI  TANAH  –  PROSES PENGAMBILAN  POLUTAN

 

Fitoremediasi diimplementasikan dengan menanam tanaman atau komunitas tanaman yang telah dipilih untuk melakukan mekanisme remediasi yang diperlukan . Teknologi ini memanfaatkan proses hidrolik dan metabolisme alami tanaman , dan dengan demikian bersifat pasif dan didukung oleh energi matahari.  Teknologi ini dapat dikombinasikan dengan metode pengolahan mekanis atau sebagai metode yang ” berdiri sendiri ” .

Jenis-jenis  Fitoremediasi :

Proses stabilisasi
Phytostabilization – Penggunaan tanaman untuk meningkatkan penyerapan kontaminan (biasanya logam ) dari dalam tanah . Penyerapan ini terjadi kalau tanaman mengubah aliran air dan mengurangi mobilitas kontaminan . Tanaman dan enzim mikroba mengikat kontaminan ke dalam tanah ( humification ) . Tanaman juga mengikat kontaminan bebas ke akar tanaman ( lignifikasi ) .

Proses pengambilan kontaminan

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  1. Phytoaccumulation / Phytoextraction – spesies khusus tanaman yang digunakan untuk menyerap sejumlah besar logam dari tanah dan selanjutnya dipanen dari tanah. Biomassa kompos untuk mendaur ulang logam atau dibakar dan abu dikirim ke tempat pembuangan sampah. Biasanya digunakan untuk remediasi tanah yang terkontaminasi logam, sedimen , dan air tanah .
  2. Rhizofiltration – Mirip dengan phytoextraction , namun sistem akar tanaman biasanya pertama kali dikembangkan hingga jatuh tempo dalam lingkungan berair dalam rumah kaca . Ketika sistem akar dikembangkan , air yang terkontaminasi ( umumnya dengan kontaminasi logam ) dibawa ke tanaman dan disirkulasikan melalui pasokan air mereka .
  3. Phytodegradation – Proses di mana enzim tanaman sepenuhnya atau sebagian termineralisasi memecah senyawa kontaminan .
  4. Degradasi Rizo ( sphere ) – Hubungan simbiosis yang terjadi antara sistem akar tanaman dan mikroorganisme di zona akar . Akar tanaman mengekskresikan gula, asam , dan alkohol yang mengandung karbon organik yang menggunakan mikroorganisme sebagai sumber makanan . Ketentuan ini meningkatkan aktivitas mikroba di zona akar , sehingga kontribusi terhadap degradasi mikroba kontaminan tanah .
  5. Pompa Organik – Penggunaan tanaman untuk mengendalikan migrasi kontaminan dalam air tanah dengan memanfaatkan sifat hidrolik alami mereka . Menggunakan pohon untuk pengendalian air diperkirakan menelan biaya sekitar satu setengah biaya sistem pompa – dan – mengobati tradisional .
  6. Phytovolatilization – Penggunaan tanaman untuk menghilangkan kontaminan dari bawah permukaan dan menguap atau menguap kontaminan dari permukaan daun tanaman setelah telah melakukan perjalanan melalui sistem tanaman.

 

 

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