title: Composting of waste paint sludge containing melamine resin and the compost's effect on vegetable growth and soil water quality.
abstract: Melamine resin (MR) is introduced to the environment from many industrial effluents, including waste paint sludge (WPS) from the automobile industry. Melamine resin contains a high nitrogen (N) content and is a potential N source during composting. In this study, two carbon sources, waste paper (WP) and plant residue (PR), were used to study their effects on composting of WPS. Additional work tested the WPS-composts effects on plant growth and soil water quality. After 84 days of composting, 85% and 54% of the initial MR was degraded in WP- and PR-composts, respectively. The limiting factor was that the MR created clumps during composting so that decomposition was slowed. Compared to the untreated control, both WP- and PR-composts increased growth of cucumber (Cucumis sativus), radish (Raphanus sativus) and lettuce (Lactuca sativa). Concentrations of trace elements in plants and soil water did not rise to a level that would preclude WPS-composts from being used as a soil amendment.
authors.affiliation: Department of Vegetable Science, College of Agronomy and Biotechnology, China Agricultural University, 2 Yuanmingyuan Xilu, Beijing 100193, PR China.
authors.forename: Yongqiang
authors.initials: Y
authors.lastname: Tian
authors.forename: Liming
authors.initials: L
authors.lastname: Chen
authors.forename: Lihong
authors.initials: L
authors.lastname: Gao
authors.forename: Frederick C
authors.initials: FC
authors.lastname: Michel
authors.forename: Harold M
authors.initials: HM
authors.lastname: Keener
authors.forename: Michael
authors.initials: M
authors.lastname: Klingman
authors.forename: Warren A
authors.initials: WA
authors.lastname: Dick
mesh_terms: D018533:Biomass; D019149:Bioreactors; D002245:Carbon Dioxide / Q000378:metabolism; D002851:Chromatography, High Pressure Liquid; D018553:Cucumis sativus / Q000187:drug effects / Q000254:growth & development; D018525:Germination / Q000187:drug effects; D007220:Industrial Waste / Q000032:analysis*; D018545:Lactuca / Q000187:drug effects / Q000254:growth & development; D010150:Paint / Q000032:analysis*; D018517:Plant Roots / Q000187:drug effects / Q000254:growth & development; D018520:Plant Shoots / Q000187:drug effects / Q000254:growth & development; D031224:Raphanus / Q000187:drug effects / Q000254:growth & development; D012722:Sewage / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature; D014227:Triazines / Q000032:analysis*; D014675:Vegetables / Q000187:drug effects / Q000254:growth & development*; D014867:Water / Q000032:analysis*; D060753:Water Quality
chemical_list: D007220:Industrial Waste; D012722:Sewage; D012987:Soil; D014227:Triazines; D014867:Water; D002245:Carbon Dioxide; C011907:melamine