Comparative study of heavy metal and pathogenic bacterial contamination in sludge and manure in biogas and non-biogas swine farms

Tulayakul, Phitsanu; Boonsoongnern, Alongkot; Kasemsuwan, Suwicha; Wiriyarampa, Srisamai; Pankumnoed, Juree; Tippayaluck, Suwanna; Hananantachai, Hathairad; Mingkhwan, Ratchaneekorn; Netvichian, Ramnaree; Khaodhiar, Sutha

doi:10.1016/s1001-0742(10)60484-6

Cited by 17 publications

(7 citation statements)

References 19 publications

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“…Table 1 presents the concentrations of heavy metals in digestate originating from different feedstocks. Heavy metals were detected in the digestate of municipal sludge, organic fraction of municipal solid waste and cattle manure (Dong et al 2010;Uysal et al 2010;Tulayakul et al 2011). Bonetta et al (2014) found significant quantities of copper, nickel and zinc in the digestate of organic wastes, including sludge, organic fraction of municipal solid waste and manure.…”

Section: Heavy Metalsmentioning

confidence: 99%

Cultivation of microalgae on liquid anaerobic digestate for depollution, biofuels and cosmetics: a review

et al. 2022

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Solid wastes from domestic, industrial and agricultural sectors cause acute economic and environmental problems. These issues can be partly solved by anaerobic digestion of wastes, yet this process is incomplete and generates abundant byproducts as digestate. Therefore, cultivating mixotrophic algae on anaerobic digestate appears as a promising solution for nutrient recovery, pollutant removal and biofuel production. Here we review mixotrophic algal cultivation on anaerobic waste digestate with focus on digestate types and characterization, issues of recycling digestate in agriculture, removal of contaminants, and production of biofuels such as biogas, bioethanol, biodiesel and dihydrogen. We also discuss applications in cosmetics and economical aspects. Mixotrophic algal cultivation completely removes ammonium, phosphorus, 17β-estradiol from diluted digestate, and removes 62% of zinc, 84% of manganese, 74% of cadmium and 99% of copper.

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Section: Heavy Metalsmentioning

confidence: 99%

Cultivation of microalgae on liquid anaerobic digestate for depollution, biofuels and cosmetics: a review

et al. 2022

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“…However, the high rate of their excretion through feces and urine has led to interest in the potential of organic minerals and gives rise to environmental problems and public concerns [23]. Previous research has confirmed that struvite crystals retrieved from swine wastewater contained very low levels of heavy metals that were far below the legal limits [24][25][26].…”

Section: Heavy Metalsmentioning

confidence: 99%

Phosphorus recovery from swine wastewater by struvite precipitation: compositions and heavy metals in the precipitates

Shen

et al. 2016

Desalination and Water Treatment

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A B S T R A C TRecovering phosphate and ammonium as struvite from swine wastewater has gained importance as a means of relieving water eutrophication and the scarcity of phosphorous rock resources. Recently, it has been generally accepted that the quality of recovered products can facilitate the market development of nutrient recovery. In this work, the compositions and heavy metals in the recovered products of struvite recovered from swine wastewater were investigated by dosing industrial-grade (IG) MgO and Mg(OH) 2 as the low-cost magnesium sources. Results revealed that struvite (34.4-40.4% weight ratio) was the dominant mineral in the precipitates, mixing up with amorphous calcium phosphate (7.8-9.5%) and residual IG-MgO or IG-Mg(OH) 2 (9.0-19.3%). The inactive components of organic matter and refractory materials occupied significant parts of the precipitates, with their levels of 14.1-20.6% and 18.9-24.4%, respectively. It was noticeable that Cu and Zn in the collected solids were above the legal limits, suggesting that pretreatment methods were necessary to remove heavy metals from swine wastewater before struvite recovery.

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“…The calculation here was based on the nutrient demand; over-fertilisation in the past would lead to an even higher cropland demand. Antibiotics and heavy metals in manure or manure-based effluent as an alternative organic fertiliser for land application could have impacts on the agricultural environment (Kwon et al, 2011; Tulayakul et al, 2011). However, the impacts of these chemicals were not considered for the calculation in this study owing to missing data.…”

Section: Resultsmentioning

confidence: 99%

Life cycle assessment of manure management and nutrient recycling from a Chinese pig farm

Luo

Stichnothe²,

Schuchardt³

et al. 2013

Waste Manag Res

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Driven by the growing numbers of intensified pig farms around cities in China, there are problems of nutrient surplus and shortage of arable land for utilising the manure. Hence, sustainable livestock systems with effective manure management are needed. The objective of this study is to compare the existing manure treatment of a typical pig farm in Beijing area (separate collection of faeces; 'Gan qing fen' system) with an alternative system and to identify the nutrients flow of the whole farm in order to quantify environmental burdens and to estimate the arable land required for sustainable nutrients recycling. Life cycle assessment is used for this purpose. Acidification potential (AP), eutrophication potential (EP) and global warming potential (GWP) are analysed in detail; the functional unit is the annual production of the pig farm. The results show that the cropland area demand for sustainable land application of the effluent can be reduced from 238 to 139 ha with the alternative system. It is possible to transfer 29% of total nitrogen, 87% of phosphorus, 34% of potassium and 75% of magnesium to the compost, and to reduce the total AP, EP and GWP of manure management on the farm by 64.1%, 96.7% and 22%, respectively, compared with the current system. Besides an effective manure management system, a full inventory of the regional nutrients flow is needed for sustainable development of livestock systems around big cities in China.

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Comparative study of heavy metal and pathogenic bacterial contamination in sludge and manure in biogas and non-biogas swine farms

Cited by 17 publications

References 19 publications

Cultivation of microalgae on liquid anaerobic digestate for depollution, biofuels and cosmetics: a review

Cultivation of microalgae on liquid anaerobic digestate for depollution, biofuels and cosmetics: a review

Phosphorus recovery from swine wastewater by struvite precipitation: compositions and heavy metals in the precipitates

Life cycle assessment of manure management and nutrient recycling from a Chinese pig farm

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