Removal of Cu2+ and turbidity from wastewater by mercaptoacetyl chitosan

Removal of heavy metal ions from wastewaters: A review

“…Macromolecule heavy metal flocculants is a new kind of flocculant. Chang et al (2009b) prepared a macromolecule heavy metal flocculant mercaptoacetyl chitosan by reacting chitosan with mercaptoacetic acid. They reported that this new flocculant could not only remove turbidity, but also remove heavy metals in wastewater.…”

Application of the central composite design to study the flocculation of an anionic azo dye using quaternized cellulose nanofibrils

“…It has often been used in both developed and developing nations for the removal of suspended solid particles (Amuda & Amoo, 2007;Faust, Temmink, Zwijnenburg, Kemperman, & Rijnaarts, 2014), heavy metals (Chang, Zhang, &Wang, 2009;Duan et al, 2010), and dyes (Verma et al, 2012;Yeap, Teng, Poh, Morad, & Lee, 2014) from water. The flocculation process relies on the collision of molecules or colloidal particles in solution to form larger unstable particles, referred to as flocs.…”

Preparation of mercaptoacetyl chitosan and its removal performance of copper ion and turbidity

“…In this reaction, 1-ethyl-3-(3-dimethyllaminopropyl) carbodiimide hydrochloride (EDC·HCl) was selected as the activating agent [7,8]. The chemical reactions are as follows [8]:…”

“…[7,8,11,12]. In order to obtain the optimum preparation conditions of the MAC, five factors and four-level orthogonal experiments were designed; the orthogonal table is shown in Table 1.…”

“…Then, investigating new method of modifying CTS has become a new hot research [6,7]. Through amidation reaction between CTS and mercaptoacetic acid (TGA), our group has obtained a new kind of flocculant mercapto-acetyl chitosan (MAC) [8]. The MAC has the ability to remove the copper ions and turbidity.…”