Journal of Scientific Research and Reports http://www.journaljsrr.com/index.php/JSRR <p><strong>Journal of Scientific Research and Reports (ISSN: 2320-0227)</strong> aims to publish high quality papers (<a href="/index.php/JSRR/general-guideline-for-authors">Click here for Types of paper</a>) in all areas of ‘scientific research’. By not excluding papers on the basis of subject area, this journal facilitates the research and wishes to publish papers as long as they are technically correct and scientifically motivated. The journal also encourages the submission of useful reports of negative results. This is a quality controlled, OPEN peer reviewed, open access INTERNATIONAL journal.</p> SCIENCEDOMAIN international en-US Journal of Scientific Research and Reports 2320-0227 Enhanced Biogas and Biofertilizer Production from Anaerobic Codigestion of Harvest Residues and Goat Manure http://www.journaljsrr.com/index.php/JSRR/article/view/30231 <p>Comparative assays were conducted to assess the biogas and biofertilizer production efficiency from anaerobically codigested goat manure (GM) and harvest residues: corn stover (CS) and rice straw (RS). All digesters were operated simultaneously under mesophilic temperature of 40°C and notable phosphate solubilizing and nitrogen fixing bacterial populations indicated qualitative biofertilizer quality of the digestates. Codigestion of the substrates significantly increased biogas yield (p &lt; 0.05) compared to monodigestion, and the highest cumulative yield of 573 ml/g VS was obtained from codigested rice straw (RS) and goat manure (GM). With a significant decimation in number of pathogens (p &lt; 0.05), a 2 – 3 fold increase in populations of plant growth promoting bacteria (<em>Bacillus</em> and <em>Pseudomonas</em> species) was observed in digestate from codigestion assays when compared to monodigestion (control) and were identified as <em>Clostridium</em> sp., <em>Bacillus subtilis</em>, <em>Bacillus megaterium</em>, <em>Lactobacillus</em> sp., <em>Pseudomonas fluorescens</em> including methanogens: <em>Methanothrix </em>sp., <em>Methanobacterium</em> sp. and <em>Methanosarcina</em> sp. On the average, codigestion assays resulted in enhanced biogas yield and biofertilizer quality that was 2.3 – 4.1 times higher than single substrate digestion and generally improved the efficiency of biogas and biofertilizer production.</p> Uduak U. Ndubuisi-Nnaji Utibe A. Ofon Naomi U. Asamudo Victoria M. Ekong ##submission.copyrightStatement## 2020-04-03 2020-04-03 1 13 10.9734/jsrr/2020/v26i330231