Penelitian ini dilakukan untuk membuat paving block dengan memanfaatkan limbah plastik, pecahan keramik, pasir, dan oli sebagai bahan alternatif infrastruktur yang aman, kuat tahan lama. Paving dihasilkan diuji kelayakannya berdasarkan nilai uji tekan, serap air, TCLP. Terdapat 4 variasi komposisi dalam penelitian ini. Berdasarkan hasil penelitian, memiliki tekan air telah memenuhi standar SNI ...

We propose a generic type system for the Constraint Handling Rules (CHR), a rewriting rule language for implementing constraint solvers. CHR being a high-level extension of a host language, such as Prolog or Java, this type system is parameterized by the type system of the host language. We show the consistency of the type system for CHR w.r.t. its operational semantics. We also study the case ...

Arsenic in groundwater was first detected in Bangladesh at Chapai Nawabgonj district in 1993. Since then arsenic contamination problem has been reported from almost every parts of the country. It is estimated that approximately 27% of the wells are contaminated with levels above 50ppb, the current drinking water standard for arsenic in Bangladesh (Kinninburg, D. G., et al., 2001). It is also es...

In this study, a high-performance mortar (HPM) was produced using fly ash as an alternative binder to increase the strength and solve problem regarding environmental degradation due harmful elements content in ash. The used study obtained from NII Tanasa Power Plant. assessment of leaching test only for HPM containing high volume (40%) compared initial After performing compressive strength, wer...

Lead is the main toxic factor in jarosite residue. It important to study release behavior of lead from simulated lead-bearing (SLBJ) for predicting stability residue and its secondary pollution environment. To identify technical issues limitations associated with safe disposal, a comprehensive analysis chemical, structural, morphological characteristics SLBJ was conducted using various detectio...

solidified samples of fuel oil combustion bottom ash with two sets of ordinary portland cement (opc) and pozzolan added opc were investigated with three sets of chemical leaching tests. toxicity characteristic leaching test (tclp) results classified waste material and its solidification products as hazardous. although ni and cr have over-leached, but their close examination with sequential chem...

Lumpur yang dihasilkan dari instalasi pengolahan air minum di Indonesia masih belum dimanfaatkan dengan baik dan menjadi permasalahan bagi lingkungan. Salah satu alternatif dapat diterapkan yaitu memanfaatkan lumpur tersebut sebagai bahan baku paving block. Penelitian ini bertujuan untuk menganalisa perbandingan limbah hasil uji daya serap air, kekuatan Toxicity Characteristic Leaching Procedur...

Sequential extractions, metal uptake by Taraxacum officinale, Ruby’s physiologically based extraction test (PBET) and toxicity characteristic leaching procedure (TCLP), were used to assess the risk of Pb and Zn in contaminated soils, and to determine relationships among soil characteristics, heavy metals soil fractionation, bioavailability and leachability. Regression analysis using linear and ...

Jarosite released from zinc metal extraction process is hazardous in nature and its world wide disposal has become a major environmental concern. In this study, an attempt has been made to immobilise and recycle the jarosite released from Hindustan Zinc Limited, India, using CCRs, so called fly ash, and clay soil. Results revealed that the particle size of jarosite was finer than that of CCRs a...