Batch and semi-continuous anaerobic co-digestion of goose manure with alkali solubilized wheat straw: A case of carbon to nitrogen ratio and organic loading rate regression optimization.
The present study focused on carbon to nitrogen ratio (C/N) and organic loading rate (OLR) optimization of goose manure (GM) and wheat straw (WS). Dealing the anaerobic digestion of poultry manure on industrial scale; the question of optimum C/N (mixing ratio) and OLR (daily feeding concentration) have significant importance still lack in literature. Therefore, Batch and CSTR co-digestion experiments of the GM and WS were carried out at mesophilic condition. The alkali (NaOH) solubilization pretreatment for the WS had greatly enhanced its anaerobic digestibility. The highest methane production was evaluated between the C/N of 20-30 during Batch experimentation while for CSTRs; the second applied OLR of (3g.VS/L.d) was proved as the optimum with maximum methane production capability of 254.65ml/g.VS for reactor B at C/N of 25. The C/N and OLR regression optimization models were developed for their commercial scale usefulness.
College of Engineering, Nanjing Agricultural University, Nanjing, Jiangsu Province 210031, China.
Muhammad
M
Hassan
College of Engineering, Nanjing Agricultural University, Nanjing, Jiangsu Province 210031, China. Electronic address: wmding@njau.edu.cn.
Weimin
W
Ding
Department of Food Engineering, University of Agriculture, Faisalabad 38000, Pakistan.
Muhammad
M
Umar
College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China.
Ghulam
G
Rasool
D000468:Alkalies / Q000494:pharmacology*; D000693:Anaerobiosis; D000818:Animals; D061249:Batch Cell Culture Techniques / Q000379:methods*; D057919:Biological Oxygen Demand Analysis; D019149:Bioreactors; D002244:Carbon / Q000032:analysis*; D005232:Fatty Acids, Volatile / Q000032:analysis; D005777:Geese; D008372:Manure / Q000032:analysis*; D008697:Methane / Q000032:analysis; D009584:Nitrogen / Q000032:analysis*; D009930:Organic Chemicals / Q000032:analysis*; D012995:Solubility; D014908:Triticum / Q000737:chemistry*; D014866:Waste Products / Q000032:analysis*
D000468:Alkalies; D005232:Fatty Acids, Volatile; D008372:Manure; D009930:Organic Chemicals; D014866:Waste Products; D002244:Carbon; D009584:Nitrogen; D008697:Methane
C/N optimization; Methane enhancement; NaOH solubilization; Organic loading management