El aire de las plantas

*,ed_

F

N/LRA

INTERIOR LANDSCAPE PLANTS FOR INDOOR AIR POLLUTION ABATEMENT

FINAL

REPORT--SEPTEMBER

15, 1989

B.C.

Wolverton,

Ph.D.

Principal

Investigator

Anne

Johnson,

M.S.

and

Keith Sverdrup

Bounds,

M.S. Inc.

Technology,

This

work

was

jointly

supported Utilization (ALCA).

by

the

NASA

Office

of

CommercialLandscape

Programs--Technology Contractors of America

Division,

and the Associated

National

Aeronautics John and Space

and Space Space MS Technology Center,

Administration Center Laboratory 39529-6000

C. Stennis

Science Stennis

CONTENTS. Abbreviations Introduction A Promising, Chemicals and Acronyms ................................................ v 1 Air Pollution..................... 2 3 3 5 5 6 for Trace Metabolites ...... 8 8 8 9 18 18 19

............................................................... Economical Used In The Solution Plant to Indoor

Screening

Tests ................................. ............................

Benzene

.................................. ............................................................................................................... ..................................................... Selective Detector

Trichloroethylene Formaldehyde Materials Gas and

Methods

Chromatograph-Mass Analysis

Analysis

Microbiological Activated Results Summary

.................................................... Air Filter System ................................

Carbon-Houseplant andDiscussion

......................................................

................................................................. ..........................................................

Acknowledgments References

................................................................ FIGURES

1. 2.

Indoor Man's

air purification interaction

system

combining

houseplants soil,and

activated

carbon...

3

with his environment--plants, and

microorganisms, 3. Removal inside carbon 4. Removal inside carbon

water ............................................. of benzene and trichloroethylene pothos from the air

4

of low concentrations experimental filter

sealed

chambers

using golden

in an 8-in.

activated 16

system.................................................... of benzene using and golden trichloroethylene pothos from the air

of high concentrations experimental filter

sealed

chambers

in an 8-in.

activated 17

system ....................................................

.°°

III

PREC, EDING

P:IGE

E-,;'LA_',!K 't.,.. _,"_':" FILMED

TABLES Trichloroethylene Houseplants Benzene Removed froma Sealed Experimental Chamber by

°

During

a 24-h Exposure from a Sealed

Period

.............................. Chamber by 10 by 11 Chamber 12 by Houseplants 12 Chamber by 13

.

Removed During

Experimental Period

Houseplants Formaldehyde Houseplants
o

a 24-h

Exposure a Sealed

.............................. Chamber

,

Removed and

from

ExperimentalPeriod

Soil During

a 24-h Exposure from

......................

Chemicals During

Removed

by Houseplants Period a Sealed Period from

a Sealed

Experimental

a 24-h Exposure Removed from

.......................................... Experimental Chamber

.

Benzene During

a 24-h Exposure

.......................................... a Sealed Experimental

.Trichloroethylene Houseplants Benzene Removing

Removal a 24-h from

During

Exposure

Period

.............................. Chamber by ................. Evergreen in a Sealed Plant

°

Removal

a Sealed Soil and

Experimental the Same 24-h Counts

Houseplants

in Potting All Plant

Potting Exposure

Soil after Periods 14

Foliage

During

.

Benzene after

Removal...