Biochar can be used to capture essential nutrients from dairy wastewater and improve soil physico-chemical properties

Biochar dapat digunakan untuk menyerap unsur hara esensial dari air limbah susu dan memperbaiki sifat fisikokimia tanah.

Clicks: 329
ID: 27979
2014
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Abstract
Recently, the potential for biochar use to recapture excess nutrients from dairy wastewater has been a focus of a growing number of studies. It is suggested that biochar produced from locally available excess biomass can be important in reducing release of excess nutrient elements from agricultural runoff, improving soil productivity, and long-term carbon (C) sequestration. Here we present a review of a new approach that is showing promise for the use of biochar for nutrient capture. Using batch sorption experiments, it has been shown that biochar can adsorb up to 20–43% of ammonium and 19–65% of the phosphate in flushed dairy manure in 24 h. These results suggest a potential of biochar for recovering essential nutrients from dairy wastewater and improving soil fertility if the enriched biochar is returned to soil. Based on the sorption capacity of 2.86 and 0.23 mg ammonium and phosphate, respectively, per gram of biochar and 10–50% utilization of available excess biomass, in the state of California (US) alone, 11 440 to 57 200 tonnes of ammonium-N and 920–4600 tonnes of phosphate can be captured from dairy waste each year while at the same time disposing up to 8–40 million tons of excess biomass.
Baru-baru ini, potensi penggunaan biochar untuk menangkap kembali kelebihan nutrien dari air limbah peternakan sapi perah telah menjadi fokus dari semakin banyak studi. Biochar yang diproduksi dari biomassa berlebih yang tersedia secara lokal dinilai dapat berperan penting dalam mengurangi pelepasan unsur hara berlebih dari limpasan pertanian, meningkatkan produktivitas tanah, dan sekuestrasi karbon (C) jangka panjang. Di sini kami menyajikan tinjauan mengenai pendekatan baru yang menjanjikan terkait pemanfaatan biochar untuk penangkapan hara. Melalui eksperimen sorpsi *batch*, telah ditunjukkan bahwa biochar dapat mengadsorpsi hingga 20–43% amonium dan 19–65% fosfat dari kotoran sapi perah gelontoran dalam waktu 24 jam. Hasil-hasil ini menunjukkan potensi biochar dalam memulihkan hara esensial dari air limbah peternakan sapi perah serta meningkatkan kesuburan tanah jika biochar yang telah diperkaya tersebut dikembalikan ke tanah. Berdasarkan kapasitas sorpsi berturut-turut sebesar 2,86 dan 0,23 mg amonium dan fosfat per gram biochar, serta 10–50% pemanfaatan biomassa berlebih yang tersedia, di negara bagian California (AS) saja, sebanyak 11.440 hingga 57.200 ton amonium-N dan 920–4.600 ton fosfat dapat ditangkap dari limbah peternakan sapi perah setiap tahunnya, sekaligus mengolah hingga 8–40 juta ton biomassa berlebih pada saat yang bersamaan.
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ghezzehei2014biocharsolid Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Ghezzehei, T. A.;Sarkhot, D. V.;Berhe, A. A.;
Journal solid earth
Year 2014
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