Using Hands-on Activities to Teach Land Application of Manure

Many states have regulations that require education for livestock producers and manure applicators. Adults that must attend these types of programs are often there solely to fulfill requirements and are not willing learners. While regulations may specify topics that must be addressed, most do not spell out teaching methods for these educational programs.…

Evaluation of current products for use in deep pit swine manure storage structures for mitigation of odors and reduction of NH3, H2S, and VOC emissions from stored swine manure

The main purpose of this research project is an evaluation of the current products available in the open marketplace for using in deep pit swine manure structure as to their effectiveness in mitigation of odors and reduction of hydrogen sulfide (H2S), ammonia (NH3), 11 odorous volatile organic compounds (VOCs) and greenhouse gas (CO2, methane and nitrous oxide) emissions from stored swine manure.…

Synergetic Process Parameters Interaction in Solid-state Anaerobic Co-digestion

In this mesophilic solid-state anaerobic co-digestion study, interaction among process parameters were  investigated. To achieve this, four treatments were considered based on two carbon to nitrogen ratios (34 and 28). The treatments were DMCS34 – Dairy manure, inoculum, and untreated corn stover with C/N ratio of 34; DMCS28 – Dairy manure, inoculum, and untreated corn stover with C/N ratio of 28; DMPCS34 – Dairy manure, inoculum, and washed pretreated corn stover with C/N ratio of 34; and DMPCS28 – Dairy manure, inoculum, and washed pretreated corn stover with C/N ratio of 28.

Effect of Pretreatment and Agitation Frequency on Methane Yield in Solid-state Anaerobic Co-digestion of Dairy Manure and Corn Stover

Solid state anaerobic co-digestion (SSCoD) has attracted huge attention in the renewable energy industry due to the potential to solve nutrient imbalance challenge. However, SSCoD potential as biogas source is often limited except the process parameters are systematically optimized. Hence, in this study, we investigated the impact of 4%-NaOH-pretreatment and two agitation frequencies (two-day and seven-day periodic agitation), being part of the process parameters, on biogas composition and methane yield.

Survey of Pennsylvania Manure Hauler and Broker Certification Program

This presentation will provide an overview of Pennsylvania’s Commercial Manure Hauler and Broker Certification program and highlight results of the industry survey. Pennsylvania’s Manure Hauler and Broker Certification Program was mandated by state law in 2006. The unique program has five certification levels, each with unique education requirements (Table 1).

Versatility of the MAnure PHosphorus EXtraction (MAPHEX) System in Removing Phosphorus, Odor, Microbes, and Alkalinity from Dairy Manures

Animal manures contain nutrients [primarily nitrogen (N) and phosphorus (P)] and organic material that are beneficial to crops. Unfortunately, for economic and logistics reasons, dairy manure tends to be applied to soils near where it is generated. Over time P concentrations in soils where dairy manure is applied builds up, and is often in excess of crop demands.