Vol. 6, Issue 2 (2018)
Biochar production, characterization and evaluation for correcting soil acidity and Al Toxicity
Author(s): Deka Kanku, Medhi BK, Das Janardan, Talukdar Bidyasagar, Nath DC and Chowdhury Pulakabha
Abstract: -An experiment was conducted during 2014-16 at Assam Agricultural University, Jorhat to produce biochar from locally available bio-wastes viz. rice straw, rice husk, toria stover and bamboo leaves and characterization of their physic chemical properties and evaluation for correcting soil acidity and Al toxicity under Assam condition. Two samples of feedstock each from 5 development blocks of Jorhat district were collected, dried and pyrolysed in slow pyrolysis (300 – 4000C) process for production of char for their physico-chemical properties. Percent moisture, ash content and specific surface area of biochars ranged from 3.26 to 4.91%, 3.70 to 24.97% and 89.40 to 184.75 m2/g, whereas pH, EC, CEC, total Carbon varied from 7.74 to 9.46, 0.272 to 1.005 dsm-1, 12.74 to 16.68 c mol (p+)/kg and 36.63 to 49.424%, respectively. Percent total N, P, and K had their value ranged from 47.27 to 60.07, 0.017 to 0.032, and 0.237 to 0.453; while, Ca and Mg, Fe, Zn, and Cu ranged from 1.11 to 5.23 and 0.148 to 1.326 c mol (p+)/kg, 16.65 to 2.91, 30 to 162, and 8.6 to 43 mg/kg of biochar. Rice straw biochar being alkaline was considered for incubation study at 3, 6 and 9 weeks of incubation periods where three doses of biochar (0, 0.5 and 1%) and five levels of liming material was applied. Increase in levels of liming material and biochars doses increased soil pH as well as ECEC significantly irrespective of incubation periods. Percentage of aluminium neutralized to its initial Al content was found increasing due to increase in levels of liming and biochars materials. Such increase was to the tune of 82% due to biochar and 95% because of application liming material.
Pages: 1198-1203 | 650 Views 35 Downloads
How to cite this article:
Deka Kanku, Medhi BK, Das Janardan, Talukdar Bidyasagar, Nath DC, Chowdhury Pulakabha. Biochar production, characterization and evaluation for correcting soil acidity and Al Toxicity. Int J Chem Stud 2018;6(2):1198-1203.