2 Natural Coagulates for Wastewater Treatment …
27
Fig. 2.3 Chitosan
coagulation/flocculation
mechanisms
where neutralization occurs in smaller regions in a step-wise fashion, thus leading
to patches of charge neutralization (Fig. 2.3).
2.7 Natural Coagulants Microorganisms-Based
Microorganisms such as bacteria, fungi, microalgae have been widely used in
wastewater treatment and organic matter degradation as well as to produce coagulants/flocculants with different structures and mechanisms. The produced substances
from the microorganisms are considered environmental and green substances and
have a high performance of coagulating/flocculating the colloids particles and other
particles with an activity reach 90% depending on the microorganism strain and the
operating conditions (Ben Rebah et al. 2018). This type of treatment is usually called
bio flocculation, due to its dependence on the interparticle bridging mechanism (Shahadat et al. 2017). Microorganisms produce bioflocculants as metabolites of their
27
Fig. 2.3 Chitosan
coagulation/flocculation
mechanisms
where neutralization occurs in smaller regions in a step-wise fashion, thus leading
to patches of charge neutralization (Fig. 2.3).
2.7 Natural Coagulants Microorganisms-Based
Microorganisms such as bacteria, fungi, microalgae have been widely used in
wastewater treatment and organic matter degradation as well as to produce coagulants/flocculants with different structures and mechanisms. The produced substances
from the microorganisms are considered environmental and green substances and
have a high performance of coagulating/flocculating the colloids particles and other
particles with an activity reach 90% depending on the microorganism strain and the
operating conditions (Ben Rebah et al. 2018). This type of treatment is usually called
bio flocculation, due to its dependence on the interparticle bridging mechanism (Shahadat et al. 2017). Microorganisms produce bioflocculants as metabolites of their