Scale-up and Operating Factors for Electrolytic Silver Recovery from Effluents of Artisanal Used-Gold-Jewelry Smelting Plants in the Philippines

Meycauayan, an Industrial City in Bulacan, Philippines: Heavy Metal Pollution in Soil and Surface Sediments and Their Relationship to Environmental Indicators

“…What contributes to the deteriorating air, water, and soil quality of Meycauayan is the rapid expansion of these industries coupled to the rapid growth of its urban population, especially the "informal settlers." These "informal settlers" are those families living in slums with no legal tenure over the land they occupy and densely inhabit private and public properties without access to adequate housing, sanitation, and clean water [14]. With the boom of unregulated precious metals and tanning industries in Bulacan in the past decade, heavy metal contaminations have gravely affected not just the river and its tributaries, but also the soil along the stretch of the river.…”

“…With the boom of unregulated precious metals and tanning industries in Bulacan in the past decade, heavy metal contaminations have gravely affected not just the river and its tributaries, but also the soil along the stretch of the river. Previous studies have observed significant enrichment of heavy metals in the surface sediments, soil and water of the MMOR system [10,11,14]. With this, a pressing need to continuously conduct environmental monitoring and assessment work on the river quality (water, sediments, soil, and biodiversity) in the thrust to rehabilitate MMOR is imperative.…”