Agriculture
Silk’s superpowers
Protecting Cows—and People—from a Deadly Disease
Microbes at the Gas Pump
Amphibians
Salamanders and Newts
Poison Dart Frogs
Toads
Animals
Jay Watch
Fishy Cleaners
A Wild Ferret Rise
Behavior
Eating Troubles
Fighting fat with fat
Listen and Learn
Birds
Pelicans
Blue Jays
Ibises
Chemistry and Materials
Earth from the inside out
Sugary Survival Skill
Salt secrets
Computers
Nonstop Robot
The Book of Life
Graphene's superstrength
Dinosaurs and Fossils
Supersight for a Dino King
Dino Babies
Dino Flesh from Fossil Bone
E Learning Jamaica
2014 GSAT Results for Jamaican Kids
Results of GSAT are in schools this week
E Learning in Jamaica WIN PRIZES and try our Fun Animated Games
Earth
Deep Drilling at Sea
Groundwater and the Water Cycle
Rodent Rubbish as an Ice-Age Thermometer
Environment
Catching Some Rays
Plant Gas
Improving the Camel
Finding the Past
If Only Bones Could Speak
Meet your mysterious relative
Stone Age Sole Survivors
Fish
Electric Catfish
Bass
Lampreys
Food and Nutrition
Moving Good Fats from Fish to Mice
Turning to Sweets, Fats to Calm the Brain
The Color of Health
GSAT English Rules
Finding Subjects and Verbs
Subject and Verb Agreement
Adjectives and Adverbs
GSAT Exam Preparation Jamaica
Scotiabank Jamaica Foundation Grade Six Achievement Test (GSAT) Scholarships
GSAT Exam Preparation
GSAT Scholarship
GSAT Exams Jamaica Scholarships
GSAT Scholarship
Results of GSAT are in schools this week
GSAT stars reap scholarship glory
GSAT Mathematics
Detecting True Art
42,000 students will sit for the GSAT Exam in two weeks
GSAT Mathematics Quiz, Teaching Math, teaching anxiety
Human Body
Cell Phones and Possible Health Hazards
Prime Time for Broken Bones
Spitting Up Blobs to Get Around
Invertebrates
Snails
Ants
Ticks
Mammals
Vampire Bats
Miniature Schnauzers
Baboons
Parents
Raise a Lifelong Reader by Reading Aloud
What Not to Say to Emerging Readers
The Surprising Meaning and Benefits of Nursery Rhymes
Physics
The Mirror Universe of Antimatter
One ring around them all
Hold on to your stars, ladies and gentlemen
Plants
Cactus Goo for Clean Water
Flower family knows its roots
Fast-flying fungal spores
Reptiles
Snapping Turtles
Komodo Dragons
Anacondas
Space and Astronomy
Evidence of a Wet Mars
A Star's Belt of Dust and Rocks
An Icy Blob of Fluff
Technology and Engineering
Model Plane Flies the Atlantic
Algae Motors
Toy Challenge
The Parts of Speech
What is a Verb?
Countable and Uncountable Nouns
Pronouns
Transportation
Seen on the Science Fair Scene
Charged cars that would charge
Robots on the Road, Again
Weather
The solar system's biggest junkyard
Either Martians or Mars has gas
Catching Some Rays
Add your Article

Eating Up Foul Sewage Smells

The smell of rotten eggs that wafts out of wastewater drains and treatment plants is an unwelcome visitor anywhere. In order to meet required standards of air quality, sewage-treatment plants use toxic and expensive chemicals to fight the stench. Now, researchers say they've found a better, cheaper, more natural way to subdue foul sewage smells. The secret? Bacteria and water. The horrible rotten-egg smell of sewage is caused by a gas called hydrogen sulfide. To get rid of it, most treatment plants use devices called chemical scrubbers, which filter the gas through a cocktail of dangerous chemicals. Chemical scrubbers work, but they are expensive and often dangerous. Two researchers tried something different. In a sewage treatment plant in California, they replaced chemical scrubbers with bacteria that break down hydrogen sulfide. The scientists loaded a container with little foam blocks full of the bacteria. Then, they pumped hydrogen gas through the chamber. Finally, they let water constantly trickle over the foam. The system worked so well that the California plant converted several chemical scrubbers to the new kind. If the technique catches on, sewage rot might become equally kind to the earth and to your nose.—E. Sohn

Eating Up Foul Sewage Smells
Eating Up Foul Sewage Smells








Designed and Powered by HBJamaica.com™