Chemical Treatment of Animal Manure for Solid-Liquid Separation

Zhang, R. H.; Lei, Fu

doi:10.13031/2013.17255

Cited by 50 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several studies have examined adding inorganic coagulants such as ferric or aluminum sulfate, alone and in combination with polymer flocculants, to either remove P from the dairy effluent before land application or to stabilize the P in the solid phase to prevent release of soluble P after land application (DeBusk et al 2008;Dao and Daniel 2002;Zhang and Lei 1998). However, the cost of the inorganic coagulants often limits the practicality of the treatment.…”

Section: Introductionmentioning

confidence: 99%

Reducing Soluble Phosphorus in Dairy Effluents through Application of Mine Drainage Residuals

Sibrell

Penn

Hedin³

2015

Communications in Soil Science and Plant Analysis

View full text Add to dashboard Cite

Three different dairy manure wastewater effluent samples were amended with mine drainage residuals (MDR) to evaluate the suitability of MDR for sequestration of phosphorus (P). Geochemical modeling of the manure wastewater compositions indicated that partially soluble P-bearing minerals including hydroxyapatite, octacalcium phosphate, and vivianite were all oversaturated in each of the manure wastewater samples. Initial MDR amendment test results indicated that these partially soluble P minerals suspended in the wastewater replenished P in the water phase as it was sorbed by the MDR samples. Further investigations revealed that the MDR samples were effective in decreasing soluble P when the amended manure was tested using the water-extractable P procedure. Under these conditions, up to 90 percent of the soluble P in the manure was converted to a sorbed, water-insoluble state. Water contamination and large-scale validation tests of the process were also conducted.

show abstract

Section: Introductionmentioning

confidence: 99%

Reducing Soluble Phosphorus in Dairy Effluents through Application of Mine Drainage Residuals

Sibrell

Penn

Hedin³

2015

Communications in Soil Science and Plant Analysis

View full text Add to dashboard Cite

show abstract

“…Screens are the most extensively used separators. The performance of screen separators is basically determined by mesh size, velocity flow, solids concentration and particle size distribution in manure [11].…”

mentioning

confidence: 99%

“…The flocculation process, agglomeration of coagulated particles into larger, rapidly settling flocs, is effected through particle-particle interaction through attachment to long-chain polymer molecules. Cationic polyacrylamides (PAM) with moderate charge density are more effective than polymers with higher charge density for solids and nutrients removal [11,15].…”

mentioning

confidence: 99%

Solid – Liquid separation of dairy manure: Distribution of components and methane production

Rico

García

et al. 2012

Biomass and Bioenergy

View full text Add to dashboard Cite

Solid–Liquid Separation of Animal Slurry

Christensen

Sommer

2013

Animal Manure Recycling

View full text Add to dashboard Cite

Societies will inevitably have to recognise that animal excreta are not just a waste material requiring disposal, but a crucial raw material needed to boost plant production to feed a growing world population. If used appropriately, animal excreta can replace significant amounts of mineral fertilisers in areas with livestock production. Manure comprises animal excreta dissolved in water or mixed with straw, a substance made up of organic matter and used as an organic fertiliser in agriculture, where it contributes to the fertility of the soil by adding plant nutrients and organic matter (Figure 1.1). In the management chain before it is applied to soil, manure can also be used for energy production. The increasing focus on developing and using new technologies and management methods for manure handling is the consequence of both a huge increase in livestock production worldwide and specialisation in agriculture. Thus, in new production systems, traditional farms with a mixture of livestock and crop production are often replaced with landless livestock production units. These new livestock production systems may not have the capacity to recycle manure on-farm, which was a feature of many farming system in the past. The plant nutrients in manure can, if used appropriately, replace significant amounts of mineral fertilisers, and the organic matter can boost soil fertility (Text Box-Basic 1.1) and can be used for energy production. On the other hand, improper management and utilisation of manure results in loss of plant nutrients (Bouwman et al., 2012)(Figure 1.2), which are a limited resource, and this can be a risk to the global feed and food supply. For example, phosphorus (P) is a limited resource, with the mineable phosphate-rich rocks used for P fertiliser production projected to become exhausted within the next 60-130 years (Figure 1.3). In a 14-month period during 2007-2008, the global food crisis led to phosphate rock and fertiliser demand exceeding supply and prices increased by 700% (Cordell et al., 2009). This increase in cost may be mitigated by reducing P

show abstract

Chemical Treatment of Animal Manure for Solid-Liquid Separation

Cited by 50 publications

References 0 publications

Reducing Soluble Phosphorus in Dairy Effluents through Application of Mine Drainage Residuals

Reducing Soluble Phosphorus in Dairy Effluents through Application of Mine Drainage Residuals

Solid – Liquid separation of dairy manure: Distribution of components and methane production

Solid–Liquid Separation of Animal Slurry

Contact Info

Product

Resources

About