This paper describes a framework to combine tabling evaluation and constraint logic programming (TCLP). While this combination has been studied previously from a theoretical point of view and some implementations exist, they either suffer from a lack of efficiency, flexibility, or generality, or have inherent limitations with respect to the programs they can execute to completion (either with s...

introduction a large volume of sediments are dredged from water bodies such as ports, waterways and wetlands and deposited on land. sediments are typically polluted by contaminants such as heavy metals. metals in sediments are in soluble, carbonate bound, fe-mn oxide, sulfide/organic matter bound and residual fractions. the metal solubility and mobility are mainly controlled by organic matter c...

Abstract Municipal solid waste incineration (MSWI) has been adopted in Indonesia to reduce the volume and mass of municipal waste. However, as a by-product combustion, fly ash generation cannot be avoided. It can cause an environmental problem if not managed properly. Hence, this study aims investigate characteristics generated from Indonesia’s first waste-to-energy pilot plant its potential ut...

The objective of this study is to use the geopolymer technique solidify/stabilize heavy metal contaminated soil. There are over 739,700 square meters heavy-metal-contaminated sites in Taiwan; most soil farmlands. These contaminants can also infiltrate into groundwater and cause more serious pollution problems. This explores possibility using solidify (CS), stabilize metal, produce good mechanic...

In the present work, thermal treatment was used to stabilize municipal solid waste incineration (MSWI) fly ash, which was considered hazardous waste. Toxicity characteristic leaching procedure (TCLP) results indicated that, after the thermal process, the leaching concentrations of Pb, Cu, and Zn decreased from 8.08 to 0.16 mg/L, 0.12 to 0.017 mg/L and 0.39 to 0.1 mg/L, respectively, which well ...

This study aims to examine the influence of untreated coal waste (UCW) and treated (TCW) as supplementary cementitious materials (SCMs) on environmental, mechanical, durability, microstructural characteristics mortar mixes. UCW preparation procedure consists sequential steps crushing grinding. Afterward, is thermally activated through incinerating at 750 °C be promoted TCW. Experimental work in...

Heavy metals contamination can be found at battery acid recycling sites, electroplating facilities, military installations, firing ranges, brownfields redevelopment sites, and associated with mining activities. The chemical stabilization process uses non-hazardous chemical binders that permanently stabilize heavy metals. The treated soils contain stable metalreagent compounds that eliminate the...

Lead contamination at shooting range soils is of great environmental concern. This study focused on weathering of lead bullets and its effect on the environment at five outdoor shooting ranges in Florida, USA. Soil, plant, and water samples were collected from the ranges and analyzed for total Pb and/or toxicity characteristic leaching procedure (TCLP) Pb. Selected bullet and berm soil samples ...

Composting is the best-known processes for biological stabilization of sewage sludge, municipal solid waste and other biodegradable wastes. Prepared compost can be used as a soil conditioner in agricultural applications. However, the presence of non-biodegradable and high level of toxic heavy metals in the compost frequently hinders agricultural land application. Uptake of heavy metals by plant...