Experimental Investigation Of Upgrading The Quality Of Biogas Using Corn Cob Derived Biochar From Cow Dung

Abstract

Today, Energy Is One Of The Fundamental Needs Of Society And Provides Services In Various Forms. Anaerobic Digestion (Ad) Is A Mature Technology To Both Manage Waste And Generate Biogas For Energy Services. However, The Raw Biogas Produced Is Often Of Low Quality And The Process Is Slow And Operates Over Very Long Durations. Also, Raw Biogas Is Mainly A Combination Of Carbon Dioxide, Methane, And Unwanted Gases That Causes A Reduction In Energy Efficiency From It. The Deficiency With Using Biogas Is Due To The Presence Of Co2 In Biogas Which Is A Non-Combustible Gas.The Presence Of Co2 Lowers The Calorific Value And The Specific Energy Density Of Biogas. Furthermore, It Reduces Its Flame Speed And The Extent Of Flammability In Comparison To Natural Gas. SoThat Alternative Approaches Are Required To Upgrade The Biogas To Methane-Rich Biogas By Reducing The Co2 And Other Contaminants Such As H2s Within The Digester. Biochar With Its Beneficial Characteristics Was Applied To Ad In This Study. This Work Was Aimed To Study The Effect Of The Utilization Of Biochar Produced Within Slow Pyrolysis At A Temperature Of 450??? On The Ability Of Enhanced Methane Production From Mesophilic Anaerobic Digestions Of Cow Dung (Cd) Through Experimentation. To Accomplish These Aims, The Ad Experiments Were Conducted In Plastic Bottles Of 1 L Capacity Used As A Digester At Mesophilic Temperature (37??? ?? 1???) With A Working Volume Of 0.8l Each And Were Fed On A Batch Basis. The Biogas Generation From Control And Digesters Amended WithCorn Cob Derived Biochar (Cc-Bc450) At Four Different Concentrations (4, 6, 8, And 10 G/800 Ml OfMedia) Labeled As Adm0 (Control), Adm1, Adm1.5, Adm2, And Adm2.5 Were Investigated. Each Experimental Condition Was Conducted In Duplicate, With All Digesters Placed In A Constant Temperature Water Bath. To Set The Ts Value To 8%, Water Was Added To The Prepared Substrate Samples. Five Digesters With Substrate Samples, One Digester Without Biochar And Four Digesters With The Addition Of Biochar Were Prepared With Inoculum. Cc-Bc450 Was Amended To Ad In A Way That A Half Of Each Cc-Bc450 Sample Was Added To The Media Through Mixing For Stability And Half Was Added Simply On The Head Space Of The Digester For Adsorption. The Experimental Result Showed That The Cumulative Methane Production Obtained From All Digesters Were (392.5 Ml) For Adm0, (444Ml) For Adm1, (486 Ml) For Adm1.5, (647 Ml) For Adm2, And (540 Ml) For Adm2.5. Compared With The Adm0 Without Any Biochar, The Cumulative Methane Production In The Ad With (8, 10, 6,And 4 G/800 Ml) Cc-Bc450 Was Increased To 39.33%, 27.31%, 19.23%, And 11.59% Respectively