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Mr. Rajesh Nandi
Assistant Professor

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Research Keywords & Expertise

0 Agricultural Machinery
0 Anaerobic Digestion
0 Waste Management
0 Renewable Energy and Environmental Sustainability
0 Machinery;agriculture;engineering;design; optimization.

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Journal article
Published: 22 October 2020 in Sustainability
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Converting organic waste into energy through anaerobic digestion is gaining popularity day by day. The reactor temperature is considered as one of the most vital factors for the digestion process. An experiment was conducted in the Biogas Laboratory of Green Energy Knowledge Hub at Bangladesh Agricultural University (BAU) to examine the influence of temperature on anaerobic digestion of cow-dung. Laboratory-scale continuous stirred tank reactors with a working volume of 15 L were operated for a 30-day retention time. The reactors were set at 20 °C, 25 °C, 30 °C, 35 °C, 40 °C and 45 °C, respectively to determine the effect of temperature on anaerobic digestion performance. Different parameters like total solids, volatile solids, pH, volatile fatty acids, ammonia nitrogen, total nitrogen, biogas production rate and methane concentration were examined. Among all the reactors, the reactor at 40 °C temperature produced maximum biogas (312.43 L/kg VS) and methane yields (209.70 L/kg VS), followed by the reactors at 35 °C and 30 °C, respectively. Statistical analysis of the obtained experimental results using Minitab® (State College, PA, USA) showed that the optimum process performance in terms of methane yield and volatile solid degradation is achieved at a reactor temperature of 35.82 °C.

ACS Style

Rajesh Nandi; Chayan Kumer Saha; Shiplu Sarker; Sanaul Huda; Monjurul Alam. Optimization of Reactor Temperature for Continuous Anaerobic Digestion of Cow Manure: Bangladesh Perspective. Sustainability 2020, 12, 8772 .

AMA Style

Rajesh Nandi, Chayan Kumer Saha, Shiplu Sarker, Sanaul Huda, Monjurul Alam. Optimization of Reactor Temperature for Continuous Anaerobic Digestion of Cow Manure: Bangladesh Perspective. Sustainability. 2020; 12 (21):8772.

Chicago/Turabian Style

Rajesh Nandi; Chayan Kumer Saha; Shiplu Sarker; Sanaul Huda; Monjurul Alam. 2020. "Optimization of Reactor Temperature for Continuous Anaerobic Digestion of Cow Manure: Bangladesh Perspective." Sustainability 12, no. 21: 8772.

Journal article
Published: 01 January 2020 in Journal of Bangladesh Agricultural University
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ACS Style

Islam; Ansari; Rajesh Nandi; Hossain; Haquee. Zero-till drill for the establishment of mungbean and comparison of its performance with the conventional method. Journal of Bangladesh Agricultural University 2020, 1 .

AMA Style

Islam, Ansari, Rajesh Nandi, Hossain, Haquee. Zero-till drill for the establishment of mungbean and comparison of its performance with the conventional method. Journal of Bangladesh Agricultural University. 2020; ():1.

Chicago/Turabian Style

Islam; Ansari; Rajesh Nandi; Hossain; Haquee. 2020. "Zero-till drill for the establishment of mungbean and comparison of its performance with the conventional method." Journal of Bangladesh Agricultural University , no. : 1.

Journal article
Published: 01 January 2020 in Journal of Bangladesh Agricultural University
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ACS Style

Shammi Akter; Sadia Tasnim; Chayan Saha; Rajesh Nandi; Huda. Bio-energy potential of different food wastes. Journal of Bangladesh Agricultural University 2020, 1 .

AMA Style

Shammi Akter, Sadia Tasnim, Chayan Saha, Rajesh Nandi, Huda. Bio-energy potential of different food wastes. Journal of Bangladesh Agricultural University. 2020; ():1.

Chicago/Turabian Style

Shammi Akter; Sadia Tasnim; Chayan Saha; Rajesh Nandi; Huda. 2020. "Bio-energy potential of different food wastes." Journal of Bangladesh Agricultural University , no. : 1.