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. 2017 Mar 27;12(3):e0174445. doi: 10.1371/journal.pone.0174445

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© 2017 Chen et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 2 — a) SEM photo of bio-carrier of calcium alginate; b) SEM photo of bio-carrier of calcium alginate—activated carbon; c) SEM photo of immobilized bacterial consortium; d) Photo of immobilized bacterial consortium microsphere.