Magnetophoretic separation of Chlorella sp.: Role of cationic polymer binder

2014 ◽  
Vol 92 (6) ◽  
pp. 515-521 ◽  
Author(s):  
Pey Yi Toh ◽  
Bee Wah Ng ◽  
Abdul Latif Ahmad ◽  
Derek Chan Juinn Chieh ◽  
JitKang Lim
Keyword(s):  
Cationic Polymer ◽  
Polymer Binder ◽  
Chlorella Sp ◽  
Magnetophoretic Separation

Magnetophoretic separation of microalgae: the role of nanoparticles and polymer binder in harvesting biofuel

RSC Advances ◽  
2014 ◽  
Vol 4 (8) ◽  
pp. 4114-4121 ◽  
Author(s):  
Pey Yi Toh ◽  
Bee Wah Ng ◽  
Chi Han Chong ◽  
Abdul Latif Ahmad ◽  
Ji-Won Yang ◽  
...  
Keyword(s):  
Polymer Binder ◽  
Magnetophoretic Separation

scholarly journals Oxidation of Terpenoids to Achieve High-Value Flavor and Fragrances—Questioning Microalgae Oxidative Capabilities in the Biotransformation of the Sesquiterpene Valencene and of Selected Natural Apocarotenoids

Chemistry ◽  
2021 ◽  
Vol 3 (3) ◽  
pp. 821-830
Author(s):  
Davide De Simeis ◽  
Stefano Serra ◽  
Alessandro Di Fonzo ◽  
Francesco Secundo
Keyword(s):  
Experimental Data ◽  
Natural Products ◽  
Aqueous Medium ◽  
Photochemical Reaction ◽  
Substrate Oxidation ◽  
Market Size ◽  
Chlorella Sp ◽  
General Opinion ◽  
Natural Way

Natural flavor and fragrance market size is expected to grow steadily due to the rising consumer demand of natural ingredients. This market request is guided by the general opinion that the production of natural compounds leads to a reduction of pollution, with inherent advantages for the environment and people’s health. The biotransformation reactions have gained high relevance in the production of natural products. In this context, few pieces of research have described the role of microalgae in the oxidation of terpenoids. In this present study, we questioned the role of microalgal based oxidation in the synthesis of high-value flavors and fragrances. This study investigated the role of three different microalgae strains, Chlorella sp. (211.8b and 211.8p) and Chlorococcum sp. (JB3), in the oxidation of different terpenoid substrates: α-ionone, β-ionone, theaspirane and valencene. Unfortunately, the experimental data showed that the microalgal strains used are not responsible for the substrate oxidation. In fact, our experiments demonstrate that the transformation of the four starting compounds is a photochemical reaction that involves the oxygen as oxidant. Even though these findings cast a shadow on the use of these microorganisms for an industrial purpose, they open a new possible strategy to easily obtain nootkatone in a natural way by just using an aqueous medium, oxygen and light.

Role of added amphiphilic cationic polymer in the stabilization of inverse emulsions

2017 ◽  
Vol 295 (11) ◽  
pp. 2207-2215 ◽  
Author(s):  
Yong Chen ◽  
Guorong Shan ◽  
Pengju Pan
Keyword(s):  
Cationic Polymer

Pyrene degradation by Chlorella sp. MM3 in liquid medium and soil slurry: Possible role of dihydrolipoamide acetyltransferase in pyrene biodegradation

2017 ◽  
Vol 23 ◽  
pp. 223-232 ◽  
Author(s):  
Suresh R. Subashchandrabose ◽  
Panneerselvan Logeshwaran ◽  
Kadiyala Venkateswarlu ◽  
Ravi Naidu ◽  
Mallavarapu Megharaj
Keyword(s):  
Liquid Medium ◽  
Soil Slurry ◽  
Pyrene Degradation ◽  
Chlorella Sp

scholarly journals Effectiveness on color and COD of textile wastewater removing by biological material obtained from Cassia fistula seed

2016 ◽  
Vol 8 (2) ◽  
pp. 121-128 ◽  
Author(s):  
Minh Trung Dao ◽  
Hung Anh Le ◽  
Thi Khanh Tuyen Nguyen ◽  
Vo Chau Ngan Nguyen
Keyword(s):  
Polymeric Materials ◽  
Textile Wastewater ◽  
Cationic Polymer ◽  
Cassia Fistula ◽  
Water And Wastewater Treatment ◽  
Synthetic Chemicals ◽  
Process Effects ◽  
Chemical Products ◽  
Seed Gum

Nowadays, natural polymeric materials extracted from plants are the new alternatives for synthetic chemicals in water and wastewater treatment. The aim of this study is to evaluate the ability of Cassia fistula seed gum (CFG) as a coagulant aid with PAC in the treatment of textile wastewater. Jartest experiments were carried out to identify the optimal parameters of coagulation-flocculation for removing color and COD in synthesis wastewater containing Methyl blue and RB21 dyes, including pH, settling time, PAC dose, the optimal CFG dosage in comparing with the cationic polymer. After that, actual textile wastewater was treated by using PAC, PAC plus cationic polymer, and PAC plus CFG for evaluating the role of CFG. CFG supplementation has assisted the process effects at nearly 98% color, 85% COD for RB21 and 90% color, 70% COD for MB at the best dose of CFG 0.15 mL and 0.1 mL, respectively. The optimized parameters for the coagulation of real textile wastewater using PAC were pH = 6 and dose = 0.6 mL can removal 66% of color. By adding CFG to PAC, the efficient of treatment was increased about 70% even at the lower dosage of PAC and CFG (0.5 mL for each reagent). The yield of combining PAC and polymer was a little bit lower than PAC and CFG, for instant 68% color was decreased at the same condition. These achievements demonstrated a workable substitute of natural products such as Cassis fistula seed gum for synthetic chemical products in coagulation-flocculation process. Hiện nay các loại vật liệu sinh học chiết xuất từ thực vật đang được nghiên cứu ứng dụng trong xử lý nước và nước thải thay cho các chất hóa học. Mục tiêu của nghiên cứu này là đánh giá hiệu quả của việc sử dụng gum được chiết xuất từ hạt cây Muồng Hoàng Yến (MHY) làm chất trợ keo tụ trong xử lý nước thải dệt nhuộm. Thí nghiệm Jartest được tiến hành nhằm xác định các điều kiện tối ưu cho quá trình xử lý nước thải tổng hợp chứa thuốc nhuộm Methyle Blue (MB) và RB21 bao gồm pH, thời gian lắng, liều PAC, liều gum MHY và liều polymer. Sau đó tiến hành xử lý nước thải thật với các điều kiện thích hợp đã xác định nhằm đánh giá vai trò của gum MHY. Gum MHY làm tăng hiệu quả của quá trình xử lý, đạt gần 98% đối với độ màu, 85% COD đối với RB21, 90% độ màu và 70% COD đối với MB với liều lượng tương ứng là 0,15 mL và 0,1 mL. Các thông số tối ưu cho quá trình xử lý trên mẫu nước thải thật là pH = 6, liều PAC = 0.6 mL có thể làm giảm 66% độ màu. Bổ sung gum MHY làm chất trợ keo tụ giúp gia tăng hiệu quả xử lý màu lên 70% dù với liều lượng rất thấp là 0,5 mL. Hiệu suất xử lý khi sử dụng kết hợp PAC và polymer thấp hơn trong trường hợp sử dụng PAC và gum MHY, cụ thể khoảng 68% độ màu được xử lý ở cùng một điều kiện. Những kết quả này cho thấy tiềm năng của việc sử dụng các vật liệu gum tự nhiên nhằm thay thế cho các hợp chất hóa học trong các quá trình keo tụ tạo bông để xử lý nước thải.

scholarly journals Stabilization of Li–S batteries with a lean electrolyte via ion-exchange trapping of lithium polysulfides using a cationic, polybenzimidazolium binder

2020 ◽  
Vol 4 (3) ◽  
pp. 1180-1190 ◽  
Author(s):  
Chuyen Van Pham ◽  
Lili Liu ◽  
Benjamin Britton ◽  
Michael Walter ◽  
Steven Holdcroft ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Cationic Polymer ◽  
Polymer Binder ◽  
Conducting Phase ◽  
Shuttle Effect ◽  
Electrolyte Content

An active cationic polymer binder absorbs dissolved polysulfides for suppressing the shuttle effect and simultaneously forms a Li+ conducting phase, allowing Li–S cells to work at a lean electrolyte content.

Cationic polymer binder inhibit shuttle effects through electrostatic confinement in lithium sulfur batteries

2018 ◽  
Vol 6 (16) ◽  
pp. 6959-6966 ◽  
Author(s):  
Huali Wang ◽  
Min Ling ◽  
Ying Bai ◽  
Shi Chen ◽  
Yanxia Yuan ◽  
...  
Keyword(s):  
Chemical Reactions ◽  
Cationic Polymer ◽  
Polymer Binder ◽  
Cycle Life ◽  
Capacity Fading ◽  
Electrostatic Confinement ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

Irreversible chemical reactions frequently cause capacity fading and poor cycle life in lithium–sulfur (Li–S) batteries due to the formation of irreversible lithium polysulfides.

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