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VERMIKOMPOSTING SAMPAH MENURUNKAN LOGAM BERAT

November 25th, 2013 No comments

VERMIKOMPOSTING SAMPAH MENURUNKAN LOGAM BERAT

 

Tiga spesies cacing tanah , yaitu , Eudrilus eugeniae , Eisenia fetida dan Perionyx excavatus , melalui Vermicomposting dapat menurunkan kandungan logam berat . Pb , Zn , Cd , Cu dan Mn dari  fraksi organik Sampah Kota [ M ( O ) SW ] , Sampah Pasar sayur ( MW ) dan Floral Limbah ( FW ) .

Konsentrasi Zn , Cd dan Cu sebesar 36,1 , 50,9 dan 70,2 % lebih tinggi di M ( O ) SW dibandingkan dengan MW , sedangkan konsentrasi Pb dan Mn adalah 96,5 % dan 80,1 % lebih tinggi pada MW dibandingkan dengan M ( O ) SW .

Limbah  FW dan vermikomposnya memiliki konsentrasi yang lebih rendah  Cd , Pb , Zn , Cu dan Mn, masing-masing  72,2 , 55,7 , 73,6 , 78,2 dan 48,2 % dan 58,0 , 77,4 , 64,1 , 63,0 dan 71,2 % ; kalau dibandingkan dengan M ( O ) SW dan MW .

Konsentrasi logam secara signifikan menurun dalam kascing yang dihasilkan oleh spesies cacing tanah dibandingkan dengan masing-masing substratnya (bahan baku).

Konsentrasi logam menunjukkan penurunan yang signifikan dalam  interval waktu yang berbeda selama proses vermicomposting . Efisiensi penghilangan logam berat lebih bagus pada kascing yang diproduksi oleh E. eugeniae

 

Sumber: Pattnaik, Swati; Reddy, M. Vikram. 2012. Remediation of heavy metals from urban waste by vermicomposting using earthworms: Eudrilus eugeniae, Eisenia fetida and Perionyx excavatus.  International Journal of Environment and Waste Management

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, Volume 10, Numbers 2-3, August 2012 , pp. 284-296.

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VERMIKOMPOSTING dan BIOAKUMULASI LOGAM BERAT

November 25th, 2013 No comments


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VERMIKOMPOSTING  dan BIOAKUMULASI LOGAM BERAT

 

Pengaruh logam berat terhadap aktivitas spesies cacing tanah Eudrillus eugineae dipelajari selama Vermicomposting limbah padat perkotaan ( MSW ), diperlakukan dengan logam berat .

Aktivitas cacing tanah , dengan indikatornya pertumbuhan dan produksi biomassa dan jumlah kepompong yang dihasilkan , dimonitor secara berkala , dan konsentrasi logam berat pada cacing tanah dan substrat ditentukan pada interval tertentu .

Percobaan skala laboratorium dilakukan dengan mencampur logam berat dengan limbah MSW . Tembaga , kadmium , kromium , timah , dan seng yang dipilih untuk penelitian.

Studi ini menyimpulkan bahwa logam berat cenderung mengakumulasi dalam tubuh cacing tanah.  Oleh karena itu, konsentrasi logam berat dalam bahan baku Vermicomposting harus dipertimbangkan dalam kaitannya dnegan kompos dari MSW dan aplikasinya untuk pemupukan tanah dan tanaman.

Tembaga dan kadmium sangat beracun bagi cacing pada konsentrasi 1,5 dan 0,1 g / kg limbah .

Penelitian juga menunjukkan bahwa cacing tanah rentan terhadap bentuk bebas dari logam berat . Kadmium adalah logam yang paling beracun , diikuti oleh tembaga .

Cacing tanah harus dipisahkan dari kotorannya  sebelum kotoran cacing (Ivermikompos) ini digunakan untuk memupuk tanah dna tanaman.

 

Sumber:  Kumar, Sunil Sharma, Vishal; Bhoyar, R V; Bhattacharyya, J K; Chakrabarti, Tapan. 2008.  Effect of Heavy Metals on Earthworm Activities During Vermicomposting of Municipal Solid Waste.  Water Environ. Res., 80, 154 (2008).

 

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VERMIKOMPOSTING – BIOAKUMULASI LOGAM BERAT

November 25th, 2013 No comments

VERMIKOMPOSTING – BIOAKUMULASI LOGAM BERAT

 

Bioakumulasi logam berat (Cd, Zn, Ni, Pb dan Cr) dan hubungan di antara mereka diselidiki pada fisiologi cacing tanah (Eisenia fetida) selama proses vermicomposting. Sampel tanah diperoleh dari kota Roudehen di wilayah timur Teheran. Spesimen E. fetida diperlakukan dnegan campuran senyawa logam dalam berbagai konsentrasi untuk memperkirakan tingkat bioakumulasi logam berat.

Setelah 14-hari (hasil percobaan menunjukkan bahwa cacing tanah mengakumulasi unsur-unsur ini dalam 14 hari) terpapar , akumulasi logam diukur dengan menggunakan metode Spektroskopi Serapan Atom.

Analisis Cluster digunakan untuk menginterpretasi data. Analisis 14 hari hasil eksperimen menunjukkan hubungan yang kuat antara bioakumulasi Pb dengan Cr ,  antara Ni dengan Cd (korelasi 0,8 dan 0,63).

 

Sumber:  M.M .Aleagha and G. Ebadi. 2011.  Study of heavy metals bioaccumulation in the process of vermicomposting.African Journal of Biotechnology.  Vol 10, No 36 (2011) p. 6997-7001. ISSN: 1684-5315.


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VERMIKOMPOSTING MAMPU MENURUNKAN KANDUNGAN LOGAM BERAT

November 25th, 2013 No comments

VERMIKOMPOSTING MAMPU MENURUNKAN KANDUNGAN LOGAM BERAT

 

Penelitian dilakukan untuk mengevaluasi perubahan konsnetrasi kalsium , sulfur dan beberapa logam berat (Zn, Cu, dan Pb) dalam limbah organik yang dipengaruhi oleh pengapuran dan inokulasi mikroorganisme.

Vermicomposting merupakan teknologi yang efektif untuk pengolahan substrat organik seperti limbah padat perkotaan (MSW)  yang kaya logam berat.

Penambahan kapur dalam substrat organik secara signifikan (P ≤ 0,05) meningkatkan kandungan kalsium dan sulfur dalam vermicomposts.

Inokulasi mikroorganisme secara signifikan (P ≤ 0,05) mengurangi kandungan logam berat produk akhir dibandingkan dengan kontrol.

Strain jamur yang relatif lebih efektif dalam detoksifikasi logam berat daripada B. polymyxa.

 

Sumber:   Debabrata Das, Pradip Bhattacharyya, B. C. Ghosh and  Pabitra Banik. 2012. Effect of vermicomposting on calcium, sulphur and some heavy metal content of  different biodegradable organic wastes under liming and microbial inoculation. Journal of Environmental Science and Health, Part B: Pesticides, Food Contaminants, and Agricultural Wastes.Volume 47, Issue 3

Buy cheap Viagra online

, 2012. P. 205-211.

 

 

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VERMIKOMPOSTING MENURUNKAN KANDUNGAN LOGAM BERAT

November 25th, 2013 No comments

VERMIKOMPOSTING MENURUNKAN KANDUNGAN LOGAM BERAT

 

Vermicomposting sampah organik sangat penting untuk digunakan dalam strategi pengelolaan sampah secara terpadu . Dalam studi ini , akumulasi logam berat oleh dua kelompok cacing tanah dari Iran dan Australia dalam proses vermicomposting diselidiki .

Eisenia fetida adalah spesies cacing tanah yang digunakan dalam proses vermicomposting . Bioakumulasi Cr , Cd , Pb , Cu , Zn dan logam berat oleh cacing tanah Iran dan Australia juga dipelajari .

Hasil penelitian menunjukkan bahwa konsentrasi logam berat menurun dengan meningkatnya waktu vermicomposting .

Perbandingan dua kelompok cacing tanah menunjukkan bahwa cacing tanah Iran mengkonsumsi lebih banyak mikronutrien seperti Cu dan Zn, dibandingkan dengan cacing tanah Australia;  sedangkan bioakumulasi unsur-unsur non – esensial seperti Cr , Cd , dan Pb oleh kelompok cacing tanah Australia ternyata lebih tinggi .

Penurunan yang signifikan konsentrasi logam berat dalam  kascing menunjukkan kemampuan kedua spesies E.fetida Iran dan Australia dalam mengakumulasi logam berat dalam jaringan tubuhnya.

 

 

Sumber: M.R. Shahmansouri, H Pourmoghadas, AR Parvaresh, H Alidadi. 2005.  Heavy Metals Bioaccumulation by Iranian and Australian Earthworms (Eisenia fetida) in the Sewage Sludge Vermicomposting. Iranian Jour. of Envir. Health Sci. and Engineering. 2005; 2(1): 28-32.

 


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VERMIKOMPOSTING MENURUNKAN KANDUNGAN LOGAM BERAT

November 25th, 2013 No comments

VERMIKOMPOSTING MENURUNKAN KANDUNGAN LOGAM BERAT

Vermicomposting BIOMASA eceng gondok menjadi alternatif yang baik untuk pengolahan eceng gondok ( Eichhornia crassipes ) dan sekaligus  bermanfaat untuk keperluan pertanian . Ketersediaan dan pelindian logam berat ( Zn , Cu , Mn , Fe , Ni , Pb , Cd , dan Cr ) dievaluasi selama Vermicomposting E. crassipes menggunakan Eisenia fetida cacing tanah . Lima proporsi yang berbeda ( percobaan 1 , 2 , 3 , 4 , dan 5 ) pupuk kandang , eceng gondok , dan serbuk gergaji disiapkan untuk proses vermicomposting .

Hasil penelitian menunjukkan bahwa pertumbuhan biomassa cacing tanah sangat  jelek pada perlakuan dengan proporsi tertinggi eceng gondok ( trial 1 ) .

Konsentrasi logam berat yang larut air , logam berat yang terekstraks asam diethylenetriaminepentaacetic ( DTPA ) dan konsentrasi logam berat yang dapat dicuci ( persentase dari total logam berat ) berkurang secara signifikan dalam semua percobaan kecuali Percobaan-1 .

Total konsentrasi beberapa logam termasuk rendah ,  tetapi fraksi larut dalam air dan fraksi terekstraks DTPA ternyata sama atau lebih tinggi dibandingkan dnegan logam lain yang konsentrasinya lebih tinggi .

Penelitian ini mengungkapkan bahwa toksisitas logam tergantung pada fraksi yang bioavailable ,  bukan tergantung pada total konsentrasi logam . Fraksi bioavailable ini beracun bagi tanaman dan mikroorganisme tanah . Vermikomposting limbah  eceng gondok oleh E. fetida sangat efektif untuk mengurangi bioavailabilitas dan pelindian logam berat .

Uji pelindian menegaskan bahwa kascing tidak berbahaya bagi tanah , tanaman , dan kesehatan manusia . Kelayakan cacing tanah untuk mengurangi toksisitas logam dan meningkatkan kandungan hara kascing , sangat berguna untuk rehabilitasi lahan secara berkelanjutan.

 

Sumber: Jiwan Singh and Ajay S. Kalamdhad. 2013. Reduction of bioavailability and leachability of heavy metals during vermicomposting of water hyacinth. 

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Environmental Science and Pollution Research.December 2013, Volume 20, Issue 12, pp 8974-8985.

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VERMIKOMPOSTING DAN KANDUNGAN LOGAM BERATNYA

November 25th, 2013 No comments


Buy cheap Viagra online

VERMIKOMPOSTING  DAN KANDUNGAN LOGAM BERATNYA

Vermicomposting menggunakan Lumbricus rubellus dilakukan dalam dua jangka waktu yang berbeda, 10 dan 30 minggu dalam plot yang sama. Tiga macam perlakuan kombinasi disusun dengan delapan ulangan untuk setiap perlakuan yaitu kotoran sapi: sampah dapur dengan ratio 30:70 (T1), kotoran sapi: ampas kopi dengan ratio  30:70  (T2), dan kotoran sapi: sampah dapur: ampas kopi dengan ratio 30:35:35  (T3).

Kandungan hara makro dalam kascing dari setiap perlakuan diukur pada minggu ke sepuluh dan ke tiga-puluh.

Durasi yang relatif lama pada proses vermicomposting dengan menggunakan Lumbricus rubellus ternyata meningkatkan kualitas kascing,  peningkatan kandungan hara makro sekaligus mengurangi konsentrasi logam berat dan menurunkan rasio C / N.

 

Sumber:

ADI AINURZAMAN JAMALUDIN and NOOR ZALINA MAHMOOD. 2010. Effects of Vermicomposting Duration to Macronutrient Elements and Heavy Metals Concentrations in Vermicompost. 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