Future Prospects for Phytoremediation

The acceptance of phytoextraction depends largely on its performance, the ultimate utilization of its by-products, and its overall economic viability. To date, commercial phytoextraction has been constrained by the expectation that site remediation should be achieved in a time comparable to other clean-up technologies. So far, most phytoremediation experiments have been performed at the lab scale, where plants grown in hydroponics setting are fed heavy metal diets. While these results are promising, scientists readily admit that solution culture is quite different from that of soil. In real soil, many metals are tied up in insoluble forms, making them less available, which is the biggest hurdle to extracting them from the soil (Kochian 1996). Phytoremediation is still in its research and development phase, and there are many technical barriers to this approach that need to be addressed. Both agronomic management practices and plant genetic abilities need to be optimized to develop commercially useful practices. Many hyperaccumulator plants remain to be discovered, and there is a need to understand their physiology in greater depth (Raskin et al. 1994). Process optimization, a proper understanding of heavy metal uptake by plants, and methods for properly disposing of the biomass produced are still needed.

Growing Soilless

Growing Soilless

This is an easy-to-follow, step-by-step guide to growing organic, healthy vegetable, herbs and house plants without soil. Clearly illustrated with black and white line drawings, the book covers every aspect of home hydroponic gardening.

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