Intensive farming generally needs large addition of organic matter to maintain fertility and enhance crop yields. Sewage sludge/biosolids are by-products of municipal and industrial wastewater treatment and a rich source of organic nutrients. Sewage sludge having high content of organic matter, macro- and micro-nutrients, can be used as fertilizer/soil conditioner for food, vegetable crop, horticultural plants and pasture, which in most cases can be beneficially recycled. In the past sewage sludge was regarded as a waste product due to expected high level of contaminants such as pathogens, pollutants and synthetic materials discharged in sewer from homes and industries, which were often incinerated, dumped in occasion or land fill. As a result of rapidly increasing population, urbanization and industrialization, wastewater production and sewage sludge generation have increased manifold. Due to high cost of mineral fertilizers and escalating trends in their prices, there is an increasing trend of using sewage sludge in agriculture, especially under intensive cropping in arid and semi arid regions of the country. Therefore, application of sewage sludge to agricultural soils may be sustainable and economical due to nutrient cycling and disposal of sewage sludge. However, there may be a risk in use of sewage sludge due to potentially harmful contents present in the sludge such as heavy metals and pathogens. This paper, therefore, presents a review on various aspects of sewage sludge used in agriculture.
KeywordsSewage SludgeSustainable AgriculturePathogenHeavy MetalsSoil Quality and Fertility
United States Environmental Protection Agency, “US Consumer Product Safety Commission,” The Inside Story: A Guide to Indoor Air Quality, EPA-402-R-93-013, 1993.
Victoria Environmental Protection Authority, “Environmental Guide-lines for Biosolids Management-Draft,” EPA Government of Victoria, 2000.
P. Csattho, “The Heavy Metal Pollution of the Environmental and the Agricultural Production,” Tematikus szakirodalmi Szemle, Akaprint Kiado, Budapest, 1994, pp. 18-27.
FAO, “Agricultural Use of Sewage,” Waste Water Treatment and Use in Agriculture, FAO Irrigation and Drawing Paper 47, Food and Agriculture Organization of the United Nations, Rome, 1992.
W. D. Joshua, L. Michalk, H. Curits, M. Salt and G. J. Osborne, “The Potential for Deter-mination of Soil and Surface Water from Sewage Sludge (Bio-solids) in a Sheep Grazing Study,” Australia Contaminants and the Soil Environment, Vol. 84, No. 1-3, 1998, pp. 135-156.
K. Long, “The Use of Biosolid (Sewage Sludge) as a Fertilizer/Soil Conditioner on Dairy Pastures,” A Review from a Dairy Food Safety Prospective, Biosolids Report, 2001.
C. D. Tsadilas, T. Masti, N. Barbayiannis and D. Dimoyiannis, “Influence of Sewage Sludge Application on Soil Properties and on the Distribution and Availability of Heavy Metal Fractions,” Communication in Soil Science and Plant Analysis, Vol. 26, 1995, pp. 2603-2619. doi:10.1080/00103629509369471
C. F. Tester, “Organic Amendment Effects on Physical and Chemical Properties of a Sandy Soil,” Soil Science Society of American Journal, Vol. 54, No. 3, 1990. pp. 827-831. doi:10.2136/sssaj1990.03615995005400030035x
R. M. Sterritt and J. N. Lester, “Mechanism of Heavy Metal Conta-mination into Sewage Sludge,” In: L. Hermite and H. Ott, Eds., Processing and Use of Sewage Sludge, Proceedings of 3rd International Symposium, Commission of European Com-munities, Redel Dordrechi, Brighton, 1993, pp. 172-175.
I. Sastre, M. A. Vicente and M. C. Lobo, “Influence of the Ap-plication of Sewage Sludges on Soil Microbial Activity,” Bioresource Technology, Vol. 57, No. 1, 1996. pp. 19-23. doi:10.1016/0960-8524(96)00035-1
WHO, “Report on Risk to Health from Microbes in Sewage Sludge Applied to Land,” EURO Reports and Studies No. 54, Regional Office for Europe, World Health Organization, 1981.
A. Obrador, J. I. Mingot, J. M. Alvarez and M. I. Rico, “Metal Mobility and Potential Bioavailability Organic Matter Rich Soil Sludge Mixture, Effect of Soil Type and Contect Time,” Science of the Total Environment, Vol. 206, 1997, pp. 117-126.
E. A. Alvarez, M. C. Mochon, J. C. J. Sanchez and M. T. Rodriguez, “Heavy Metal Extractable Forms in Sludge from Waste Treatment Plants,” Chemosphere, Vol. 47, No. 7, 2002, pp. 765-775. doi:10.1016/S0045-6535(02)00021-8
European Commission, “Disposal and Recycling Routes of Sewage Sludge Part 3,” Scientific and Technical Report, European Commission DG Environment, 2001.
Department of Natural Resources and Environment, “Biosolids in Victoria-Report on Options for Benificial Use of Biosolids,” 1998.
ADAS, “Guidelines for Application of sewage Sludge to Industrial Crop in UK,” 2001. http://www.Adas.Co.uk/media/publications/ASSIC.PDF# search=%22 types % 20 of % 20 sewage% 20% sludge %22
E. M. Ameh, M. Rogers, J. Cass, F. Pe-rez-Viana and S. R. Smith, “Survival of the Indicator Organism Escherichia coli Industrially Disturbed Soils Reclaimed by Sewage Sludge Amendment,” Final Report, Scottish Water and Portcullis Development Ltd. Center for Environmental Control and Waste management, Department of Civil and environmental Engineering, Imperial College, London, 2006.
M. Jamil, M. Qasim and M. Umar, “Utilization of Sewage Sludge on Organic Fertilizer in Sustainable Agriculture,” Journal of Applied Science, Vol. 6, No. 3, 2006, pp. 531-535. doi:10.3923/jas.2006.531.535
S. K. Dubey, R. K. Yadav, P. K. Chatuvedi, B. Goyel, R. Yadav and P. S. Minhas, “Agri-cultural Uses of Sewage Sludge and Water and Their Impact on Soil Water and Environmental Health in Haryana, India,” Ab-stract of 18th World Congress of Soil Science, Philadelphia, 9-15 July 2006.
A. Wallace and G. A. Wallace, “A Possible Flaw in EPA, New Sludge Rule, Due to Heavy Metal Interactions,” Communication in Soil Science and Plant Analysis, Vol. 25, 1993, pp. 129-135. doi:10.1080/00103629409369019
T. Benckiser and T. Simmarmata, “Environmental Impact of Fertilizing Soils by Using Sewage Sludge and Animal Waste,” Fertilizer Research, Vol. 37, 1994, pp. 1-22. doi:10.1007/BF00750669
A. Nishimune, “Combinations of Organic and Inorganic Fertilizers for Crop Production,” Ex-tension Bulletin, No. 372, 1993, pp. 1-25.
M. Q. Khan and J. I. Khan, “Impact of Sewage Waste (Effluent and Sludge) on Soil Properties and Quality of Vegetables,” Final/Completion Report of ALP Project, Department of Soil Science, Faculty of Agriculture, Gomal University, Dera Ismail Khan, 2006.
P. C. Brookes. E. Heijnen, S. P. Mc Grath and E. D. Vance, “Soil Microbial Biomass Estimates in Soils Contami-nated with Metals,” Soil Biology and Biochemistry, Vol. 18, 1986, pp. 383-388. doi:10.1016/0038-0717(86)90042-8
A. FlieBbach, R. Martens and H. H. Reber, “Soil Microbial Biomass and Mi-crobial Activity in Soils Treated with Heavy Metal Contaminated Sewage Sludge,” Soil Biology and Biochemistry, Vol. 26, No. 9, 1994, pp. 1201-1205. doi:10.1016/0038-0717(94)90144-9
B. P. Knight, S. P. Mc Grath and A. M. Chadri, “Biomass Carbon Measurements Substrate Utilization Patterns of Microbial Populations from Soils Amended with Cadmium, Copper or Zinc,” Applied Environmental Microbiology, Vol. 663, 1997, pp. 39-43.
G. Tyler, “Heavy Metals in Soil Biology and Bi-ochemistry,” ln: E. A. Paul and J. N Ladd, Eds., Soil Bioche-mistry, Vol. 5, 1981, pp. 371-414.
E. Baath, “Effects of Heavy Metals in Soil on Microbial Process and Populations,” A Review Water Air Soil Pollutants, Vol. 4, 1989, pp. 335-379.
S. P. McGrath, P. C. Brookes and K. E. Giller, “Effects of Potentially Toxic Metals in Soil Derived from Past Applications of Sewage Sludge on Nitrogen Fixation by Tri-folium repens L.,” Soil Bioliogy and Biochemistry, Vol. 20, 1988, pp. 415-424. doi:10.1016/0038-0717(88)90052-1
M. R. Banerjee, D. L. Burtonz and S. Depoe, “Impact of Sewage Sludge Application on Soil Biological Characteristics,” Agriculture Ecosystem & Environment, Vol. 66, No. 3, 1997, pp. 241-249. doi:10.1016/S0167-8809(97)00129-1
I. J. Manguiat, “Sewage Sludge; Turning an Environmental Pollutant into an Agriculture Resource,” 2nd Professional Lecture Delivered in Department of Soil Science, University of Philippine, LOS Banos, 1997.
J. S. C. Mbagwu and A. Piccolo, “Carbon, Nitrogen and Phosphorus Concentration in Aggregates of Or-ganic Waste-Amended Soils,” Biological Wastes, Vol. 31, No. 2, 1990, pp. 97-111. doi:10.1016/0269-7483(90)90164-N
ADAS, “Beneficial Effect of Biosolids on Soil Quality and Fertility,” UKW/ROI/SL/08/2, 2000.
SNIFFER, “Human Health and Environmental Impacts of Using Sewage Sludge on Forestry and for Restoration of Derelict Land,” Macaulay Research Consultancy Service, Craigiebuckler, 2007.
J. A. Roberts, W. L. Daiels, J. C. Bell and D. C. Martens, “Tall Fescus Pro-duction and Nutrient Status on South West Virginia Mine Soils,” Journal of Environmental Quality, Vol. 17, 1998, pp. 55-62. doi:10.2134/jeq1988.00472425001700010008x
C. S. Wortmann, “Sewage Sludge Utilization for Crop Production,” Department of Agronomy and Horticulture, University of Ne-braska-Lincoln, Lincoln, 2005.
B. J. Lindsay and T. J. Logan, “Field Response of Soil Physical Properties to Sewage Sludge,” Journal of Environmental Quality, Vol. 27, No. 3, 1998, pp. 534-542. doi:10.2134/jeq1998.00472425002700030009x
B. J. Chambers, F. A. Nicholson, M. Aitken, E. Cartmell and C. Rowlands, “Benefits of Biosolids to Soil Quality and Fertility CIWEM,” Water and Environment Journal, Vol. 17, No. 3, 2003, pp. 162-166. doi:10.1111/j.1747-6593.2003.tb00455.x
F. Garcia-Orenes, C. Guerrero, J. Mataix-Solera, J. Navarro-Pedreno, I. Gomez and J. Mataix-Beneyto, “Factors Controlling the Aggregate Stability and Bulk Density in Two Different Degraded Soils Amended with Biosolids,” Soil and Tillage Research, Vol. 82, No. 1, 2005, pp. 65-76. doi:10.1016/j.still.2004.06.004
C. G. Cogger, “Potential Compost Benefits for Restoration of Soils Disturbed by Urban Development,” Compost Science & Utilization, Vol. 13, No. 4, 2005, pp. 243-251.
K. C. Cameron, H. J. Di and R. G. McLaren, “Is Soil an Appropriate Dumping Ground for Our Wastes?” Australian Journal of Soil Research, Vol. 35, No. 5, 1997, pp. 995-1035. doi:10.1071/S96099
A. T. Wells, K. Y. Chan and P. S. Cornish, “Comparison of Conventional and Alternative Vegetable Farming Systems on the Properties of a Yellow Earth in New South Wales,” Agriculture Ecosystem and Environment, Vol. 80, 2000, pp. 47-60. doi:10.1016/S0167-8809(00)00133-X
N. V. Hue and S. A. Ranjith, “Sewage Sludge in Hawaii; Chemical Composition Reactions with Soils and Plants,” Water, Air and Soil Pollution, Vol. 72, No. 1, 1994, pp. 265-283. doi:10.1007/BF01257129
D. S. Powlson, “Impact of Heavy Metals on Soil Quality with Respect to Microbial Activity and Production of Crops,” Soil Science Department IACR, Rothamsted, MAFF Project Code, SP0120, 2002.
M. Akmal, H. Z. Wang, J. J. Wu and D. F. Xu, “Changes in En-zymes Activity, Substrate Utilization Pattern and Diversity of Soil Microbial Communities under Cadmium Pollution,” Journal of Environmental Sciences-China, Vol. 17, No. 5, 2005, pp. 802-807.
M. Akmal, J. M. Xu, Z. J. Li, H. Z. Wang and H. Y. Yao, “Effects of Lead and Cadmium Nitrate on Biomass and Substrate Utilization Pattern of Soil Microbial Communities,” Chemosphere, Vol. 60, No. 4, 2005, pp. 508-514. doi:10.1016/j.chemosphere.2005.01.001
W. Rulkens, “Sewage Sludge as a Biomass Resource for the Production of Energy: Overview and Assessment of the Various Options,” Energy & Fuels, Vol. 22, No. 1, 2008, pp. 9-15. doi:10.1021/ef700267m
A. Veeken, K. Nierop, V. Wilde and B. Hamelers, “Characterization of NaOH-Extracted Humic Acids during Composting of a Biowaste,” Bioresource Technology, Vol. 72, 2000, pp. 33-41. doi:10.1016/S0960-8524(99)90096-2
D. J. Walker, R. Clemente and M. P. Bernal, “Contrasting Effects of Manure and Compost on Soil pH, Heavy Metal Availability and Growth of Chenopodium album L. in a Soil Contaminated by Pyretic Mine Waste,” Chemosphere, Vol. 57, 2004, pp. 215-135. doi:10.1016/j.chemosphere.2004.05.020
L. D. King and W. R. Dunlop, “Application of Sewage Sludge to Soils High in Organic Matter,” Journal of Environmental Quality, Vol. 11, No. 4, 1982, pp. 608-616. doi:10.2134/jeq1982.00472425001100040011x
P. Fletcher and P. H. T. Beckett, “The Chemistry of Heavy Metals in Digested Sludge II, Heavy Metal Complexion with Soluble Organic Matter,” Water Research, Vol. 21, 1997, pp. 1163-1172. doi:10.1016/0043-1354(87)90167-9
G. A. ?Connor, C. ?Connor and G. R. Cline, “Sorption of Cadmium by Calcareous Soils: Influence of Solution Composition,” Soil Science Society of American Journal, Vol. 48, No. 6, 1984, pp. 1244-1247. doi:10.2136/sssaj1984.03615995004800060008x
D. Za-bowski and R. J. Zasoki, “Cadmium, Copper and Zinc Adsorp-tion by a Forest Soil in the Presence of Sludge Leachate,” Water, Air & Soil Pollutats, Vol. 36, No. 1, 1987, pp. 103-113. doi:10.1007/BF00450623
B. J. Alloway, I. Thornton, G. A. Smart, J. C. Sherloc and M. J. Quinn, “Metal Availability,” In: H. Morgan, Ed., The Shipham Report: An Investigation into Cadmium Contamination and Its Implication for Human Health, Science of the Total Environment, Vol. 75, 1988, pp. 41- 69.
P. Papadopoulos and D. L. Rowell, “The Reactions of Cadmium with Calcite Surfaces,” Journal of Soil Science, Vol. 43, 1988, pp. 23-36. doi:10.1111/j.1365-2389.1988.tb01191.x
T. Christensen and J. C. Tjell, “Interpretation of Experimental Results on Cadmium Crop Intake from Sewage Sludge Amended Soil,” In: P. L. Hermite and H. Ott, Eds., Processing and Use of Sewage Sludge, Reidel, Dordrech, 1984, pp. 358-369.
A. R. A. Usman, Y. Kuzyakov, K. Lorenz and K. Stahr, “Remediation of Soil Contaminated with Heavy Metals by Immobilizing Com-pounds,” Journal of Plant-Nutrition, Soil Science, Vol. 169, No. 2, 2006, pp. 205-212. doi:10.1002/jpln.200421685
A. N. D. Ross, R. A. Lawrie, M. S. Whatmuff, J. P. Kelly and A. S. H. Awad, “Guidelines for the Use for Sewage Sludge on Agricultural Land,” New South Wales Agriculture, 1991.
S. R. Smith, “Organic Contaminants in Sewage Sludge (Biosolids) and Their Significance for Agricultural Recycling,” Philosophy Today A Royal Society, Vol. 367, 2009, pp. 4005-4041.
E. F. Davis, S. L. Klosterhaus and H. M. Stapleton, “Measurement of Flame Retardants and Triclosan in Municipal Sewage Sludge and Biosolids,” Environmental International, Vol. 40, 2012, pp. 1-7. doi:10.1016/j.envint.2011.11.008
R. P. Singh and M. Agrawal, “Potential Benefits and Risks of Land Application of Sewage Sludge,” Waste Management, Vol. 28, No. 2, 008, pp. 347-358.
P. Oleszczuk, “Testing of Different Plants to Determine Influence of Physico-Chemical Properties and Contaminants Content on Municipal Sewage Sludges Phytotoxicity,” Environmental Toxicology, Vol. 25, 2010, pp. 38-47.
S. D. Pillai, K. W. Widmer, S. E. Dowd and S. C. Ricke, “Occurance of Air Borne Bacteria and Pathogen Indicator during Land Application of Sewage Sludge,” Applied and Environmental Microbiology, Vol. 62, No. 1, 1996, pp. 296-299.
C. P. Geba, C. Wallis and J. L. Melnick, “Fate of Waste-water Bacteria and Viruses in Soil,” Journal of Irrigation and Drainage, Division of American Society of Civil Engineering, Vol. 10, No. 1, 1975, pp. 157-174.
D. Cools, R. Merckx, K. Vlassak and J. Verhaegen, “Survival of E-coli and Enterococcus spp. Derived from Pig Slurry in Soils of Different Texture,” Applied Soil Ecology, Vol. 17, No. 1, 2001, pp. 53-804. doi:10.1016/S0929-1393(00)00133-5
G. Bitton, “Waste-water Microbiology,” 3rd Edition, Wiley-Liss, Hoboken, 2005, p. 746. doi:10.1002/0471717967
S. R. Smith, “A Critical Review of the Bioavailability and Impacts of Heavy Metals in Municipal Solid Waste Composts Compared to Sewage Sludge,” En-vironment International, Vol. 35, No. 35, 2009, pp. 142-156. doi:10.1016/j.envint.2008.06.009
M. Tejada, M. M. Do-bao, C. Bentiz and J. L. Gonzalez, “Study of Composting of Cotton Residues,” Bioresource Technology, Vol. 79, No. 2, 2001, pp. 199-202. doi:10.1016/S0960-8524(01)00059-1
V. D. Zheljazkov and P. R. Warm, “Source-Separated Municipal Solid Waste Compost Application to Swiss Chard and Basil,” Journal of Environmental Quality, Vol. 33, No. 2, 2004, pp. 542-552. doi:10.2134/jeq2004.0542
G. S. Abawi and T. L. Widmer, “Impact of Soil Health Management Practices on Soil Borne Pathogens, Nematodes and Root Diseases of Vegetable Crops,” Applied Soil Ecology, Vol. 15, 2000, pp. 37-47. doi:10.1016/S0929-1393(00)00070-6
H. Huma and M. Mushtaq, “Effects of Sewage Sludge Application on the Heavy Metal Content of Wheat,” Canadian Journal of Soil Science, Vol. 3, 2003, pp. 240-248.
M. J. Mohammad and B. M. Athamneh, “Changes in Soil Fertility and Plant Uptake of Nu-trients and Heavy Metals in Response to Calcareous Soils,” Journal of Agronomy, Vol. 3, No. 3, 2004, pp. 229-236. doi:10.3923/ja.2004.229.236
A. Sonmez and M. A. Boz-kurt, “Lettuce Grown on Calcareous Soils Benefit from Sewage Sludge,” Acta Agriculturae Scandinavica B, Vol. 56, No. 1, 2006, pp. 17-24. doi:10.1080/09064710510005813
E. Romeo, V. Flors, P. Garcia-Agustin, M. Cerezo and L. Lapena, “Aquifer Contami-nation by Nitrogen after Sewage Sludge Fertilization,” Bulletin of Environmental Contamination and Toxicology, Vol. 72, No. 2, 2004. pp. 344-351. doi:10.1007/s00128-003-8984-9
C. Chatterjee and B. K. Dube, “Impact of Pollutant Elements on Vegetable Growing in Sewage Sludge Treated Soil,” Journal of Plant Nutrition, Vol. 28, No. 10, 2005, pp. 1811-1820. doi:10.1080/01904160500251175
C. W. Holmes and G. F. Wilson, “Milk Production from Pasture,” Butter Worths Agricultural Books, Newzeland, 1984.
INRA, “Epandage de Boues de Station d’Epuration en Conditions Forestieres, Situation Actuelle et Perspectives,” Rapport du Department Forets et Milieux Naturels, Unit de Recherché Forestiere Pier-roton, 1999, p. 10.