Optimization of pH induced flocculation of marine and freshwater microalgae via central composite design

Ak?? Sevgi; ?z?imen Didem

摘要

Abstract > Microalgae harvesting via pH induced flocculation along with utilization of recovered medium after flocculation is one of the most economical methods for separating the microalgal biomass in order to reduce the dewatering cost. In this study, optimization of marine and freshwater microalgae flocculation by pH adjustment was investigated via central composite design methodology. One molar of KOH and NaOH solutions were used to increase the pH level of the microalgal culture. Increasing pH value of the medium provided the highest flocculation efficiency up to 92.63 and 86.18% with pH adjusted to 10.5 with KOH and NaOH solutions for marine microalgae Nannochloropsis oculata and freshwater microalgae <fc>Chlorella minutissima</fc> , respectively. Also, it was revealed that microalgae cells were still alive after flocculation process and their biochemical composition was not changed, and flocculated medium can be used again for the next microalgal production. According to the results, it can be said that this method is cheap and effective, simple to operate and provides the utilization of flocculated medium again. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> > 通过pH诱导的絮凝收获微血糖以及在絮凝后利用回收的培养基是分离微藻生物量的最经济方法之一，以降低脱水成本。在该研究中，通过中央复合设计方法研究了通过pH调节的船舶和淡水微藻絮凝的优化。使用一种摩尔的KOH和NaOH溶液来增加微藻培养的pH水平。增加介质的pH值，提供最高的絮凝效率，高达92.63和86.18％，用KOH和NaOH溶液调节至10.5，用于海洋微藻 nannchloropsis oculata </ i> 和淡水微藻 <Fc>小黄minutissima </ FC> </ i> ，分别。此外，据发现，在絮凝过程之后微藻细胞仍然活着，并且它们的生化组合物未改变，并且可以再次用于下一个微藻生产来使用絮凝培养基。根据结果，可以说该方法便宜且有效，操作简单，并再次提供絮凝介质的利用率。 </ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-15005/'>《Biotechnology Progress》</a> <b style="margin: 0 2px;">|</b><span>2019年第3期</span><b style="margin: 0 2px;">|</b><span>共6页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ak?? Sevgi&option=202" target="_blank" rel="nofollow">Ak?? Sevgi;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=?z?imen Didem&option=202" target="_blank" rel="nofollow">?z?imen Didem;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Bioengineering DepartmentY?ld?z Technical UniversityIstanbul Turkey;</p> <p>Bioengineering DepartmentY?ld?z Technical UniversityIstanbul Turkey;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/15.html" title="生物科学">生物科学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Chlorella minutissima&option=203" rel="nofollow">Chlorella minutissima;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=flocculation&option=203" rel="nofollow">flocculation;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=microalgae&option=203" rel="nofollow">microalgae;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Nannochloropsis oculata&option=203" rel="nofollow">Nannochloropsis oculata;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=pH&option=203" rel="nofollow">pH;</a> </p> <div class="translation"> 机译：小黄小小小;絮凝;微藻;Nannchloropsis Oculata;pH; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/academic-journal-cn_frontiers-chinas-environmental-science-engineering-english_thesis/0201288915625.html">Degradation of refractory organics in concentrated leachate by the Fenton process: Central composite design for process optimization</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Senem Yazici Guvenc&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Senem Yazici Guvenc,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Gamze Varank&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Gamze Varank </a> <a href="/journal-foreign-10460/" target="_blank" rel="nofollow" class="tuijian_authcolor">中国环境科学与工程前沿：英文版 .</a> <span>2021</span><span>,第001期</span> </span> </div> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/academic-journal-cn_detail_thesis/0201281212171.html">Application of Central Composite Design to Optimize Spawns Propagation</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Martin M. 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YU Ying-Lan</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=LI Ya-Nan&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,LI Ya-Nan</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=ZHANG Yong&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,ZHANG Yong</a> <span> <a href="/journal-cn-6419/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 中国天然药物 </a> </span> <span> . 2018</span><span>,第006期</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/06130410833467.html">A METHOD FOR LIGHT-INDUCED ACTUATION OF PH-SENSITIVE ASSEMBLIES AND A COMPOSITE MATERIAL THEREFORE</a> <b>[P]</b> . <span> 外国专利：  EP3241617A1 </span> <span> . 2017-11-08</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> 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