Wageningen University, Sub-Department of Environmental Technology, P.O. Box 17, 6700 AA Wageningen, The Netherlands.
Bioresour Technol. 2012 Jan;104:417-23. doi: 10.1016/j.biortech.2011.11.005. Epub 2011 Nov 10.
In a Plant-Microbial Fuel Cell anode-conditions must be created that are favorable for plant growth and electricity production. One of the major aspects in this is the composition of the plant-growth medium. Hoagland medium has been used until now, with added phosphate buffer to reduce potential losses over the membrane because of differences in pH between anode and cathode. We developed a new, improved plant-growth medium that improves current production, while the plant keeps growing. This medium is a nitrate-less, ammonium-rich medium that contains all macro- and micro-nutrients necessary for plant growth, with a balanced amount of bicarbonate buffer. Sulphate presence in the plant-growth medium helps to keep a low anode-potential. With the new plant-growth medium the maximum current production of the Plant-Microbial Fuel Cell increased from 186 mA/m(2) to 469 mA/m(2).
在植物-微生物燃料电池的阳极条件下，必须创造有利于植物生长和发电的条件。其中一个主要方面是植物生长介质的组成。到目前为止，一直使用霍格兰氏培养液，并添加磷酸盐缓冲液，以减少由于阳极和阴极之间 pH 值的差异而导致的膜潜在损失。我们开发了一种新的、改良的植物生长介质，可以在植物不断生长的同时提高电流产量。这种培养基是一种不含硝酸盐、富含铵盐的培养基，含有植物生长所需的所有大量和微量营养素，以及平衡量的碳酸氢盐缓冲剂。植物生长介质中硫酸盐的存在有助于保持较低的阳极电位。使用新的植物生长介质，植物-微生物燃料电池的最大电流产量从 186 mA/m(2)增加到 469 mA/m(2)。
