Fertilizers from composting of olive-mill wastewaters

Tomati, U.; Galli, E.; Fiorelli, Fabio; Pasetti, L.

doi:10.1016/s0964-8305(96)00044-3

Cited by 65 publications

(32 citation statements)

References 6 publications

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“…Available minerals are very essential for plant growth and development. The higher content of HA at the end of the composting period compared to before composting suggests the occurrence of humification and stability of the compost [22] which had also increased compared to the uncomposted material.…”

Section: Discussionmentioning

confidence: 99%

Chemical Characteristics of Compost and Humic Acid from Sago Waste (Metroxylon sagu)

Petrus¹,

Ahmed²,

Muhamad³

et al. 2009

American J. of Applied Sciences

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Problem statement: Agriculture waste such as Sago Waste (SW) has a potential to cause pollution either on land or in water. In order to reduce this problem, a study was conducted to investigate the effect of three different treatments on the chemical characteristics of compost and humic acid from SW. Approach: The study had three treatments which were: T1: SW (80%) + chicken feed (5%) + chicken dung slurry (5%) + molasses (5%) + urea (5%), T2: SW (80%) + chicken feed (10%) + chicken dung slurry (5%) + molasses (5%) and T3: SW (80%) + chicken feed (10%) + chicken dung slurry (5%) + urea (5%). Composting was done for 60 days in a white polystyrene box with a size of 61.5×49×33.5 cm. The composts were analyzed for pH, total nitrogen, organic carbon, organic matter, ash, Cation Exchange Capacity (CEC), phosphorus and HA using standard procedures. Results: All treatments did not reach thermophilic phase. Compost of T2 had high quality (pH, total nitrogen, organic carbon, organic matter, ash, Cation Exchange Capacity (CEC), phosphorus and HA) compared to T1 and T3. The yield of HA of T2 was also significantly higher compared to those of T1 and T3. The compost characteristics of T1 and T3 were similar. The chemical characteristics of HA the 3 treatments were within the standard range reported by other researchers. Conclusion: T2 is more efficient in producing mature and good quality compost in 60 days compared to T1 and T3.

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Section: Discussionmentioning

confidence: 99%

Chemical Characteristics of Compost and Humic Acid from Sago Waste (Metroxylon sagu)

Petrus¹,

Ahmed²,

Muhamad³

et al. 2009

American J. of Applied Sciences

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“…According to Flouri et al (1988), nitrogen fixing bacteria (mainly Azotobacter) excrete polysaccharides, which behave as natural adhesives stabilizing soil conglomerates. Tomati et al (1996) also mention that nitrogen fixing microorganisms enhance soil fertility.…”

Section: Introductionmentioning

confidence: 99%

The effect of olive mill wastewater on seed germination after various pretreatment techniques

Komilis

Karatzas

Halvadakis

2005

Journal of Environmental Management

140

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“…In Andalusia, different by-products from the olive oil and sugar industries, such as 'alpechı´n' (olive mill wastewater), 'alperujo' (olive mill solid residue) and vinasses (desugared beet molasses), could be used for afforestations in suitable quantities. In general, these products, and those obtained from their transformation, have been proved to have a noticeable fertilizing capacity, probably derived from their high content in nutrients (N, K) and humic substances, in particular fulvic acids (Murillo et al, 1993;Cabrera et al, 1996;Tomati et al, 1996;Madejo´n et al, 2001;Tomati et al, 2001;Paredes et al, 2002;Madejo´n et al, 2003a).…”

Section: Introductionmentioning

confidence: 99%

The response of wild olive to the addition of a fulvic acid-rich amendment to soils polluted by trace elements (SW Spain)

Murillo

Madejón

et al. 2005

Journal of Arid Environments

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We studied the response of wild olive (Olea europaea L. var. Sylvestris Brot.), a representative species of the Mediterranean forests, to a fulvic acid-rich amendment added to soils polluted by trace elements under semi-arid conditions. Fulvic acids are known to increase the availability of minor elements; however, phytotoxic effects might arise if the mobilization of potentially toxic trace elements was excessive. The amendment caused some mobilization of As under laboratory conditions. However, 'in situ', phytotoxic concentrations of As in the plants were never registered. The concentrations of Cd, Cu, Pb, Tl and Zn were not phytotoxic either and were generally within the ranges considered normal for plants. The positive effects on plant growth and on the nitrogen and chlorophyll content derived from the amendment application seem to corroborate the absence of phytotoxicity. r

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Fertilizers from composting of olive-mill wastewaters

Cited by 65 publications

References 6 publications

Chemical Characteristics of Compost and Humic Acid from Sago Waste (Metroxylon sagu)

Chemical Characteristics of Compost and Humic Acid from Sago Waste (Metroxylon sagu)

The effect of olive mill wastewater on seed germination after various pretreatment techniques

The response of wild olive to the addition of a fulvic acid-rich amendment to soils polluted by trace elements (SW Spain)

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