دانلود رایگان مقاله انگلیسی غلظت اسید لاکتیک نسل دوم از تفاله نیشکر از طریق تبخیر ترکیبی - الزویر 2019

عنوان فارسی
غلظت اسید لاکتیک نسل دوم از تفاله نیشکر از طریق تبخیر ترکیبی: چالش های عملیاتی
عنوان انگلیسی
Concentrating second-generation lactic acid from sugarcane bagasse via hybrid short path evaporation: Operational challenges
صفحات مقاله فارسی
0
صفحات مقاله انگلیسی
6
سال انتشار
2019
نشریه
الزویر - Elsevier
فرمت مقاله انگلیسی
PDF
نوع مقاله
ISI
نوع نگارش
مقالات پژوهشی (تحقیقاتی)
رفرنس
دارد
پایگاه
اسکوپوس
کد محصول
E9478
رشته های مرتبط با این مقاله
زیست شناسی
گرایش های مرتبط با این مقاله
علوم سلولی و مولکولی، علوم گیاهی
مجله
فناوری جداسازی و تصفیه - Separation and Purification Technology
دانشگاه
Laboratory of Optimization - Design and Advanced Process Control - School of Chemical Engineering - University of Campinas - Brazil
کلمات کلیدی
اسید لاکتیک 2G، پایین دست، تبخیر مسیر کوتاه ترکیبی، قندهای همی سلولز
doi یا شناسه دیجیتال
https://doi.org/10.1016/j.seppur.2018.07.012
چکیده

ABSTRACT


Production of lactic acid (LA) from lignocellulosic materials has become increasingly prominent in the market. However, for industrial scale to be reached, several challenges in second-generation lactic acid production must be overcome. Besides obstacles such as the hydrolysis process, one of the major challenges of the lactic acid industry is the separation and purification process. This study evaluates the separation of lactic acid produced from hemicellulose hydrolysate from sugarcane bagasse using a Hybrid Short Path Evaporation (HSPE) system. Results showed that a lactic acid concentration of 3.1 times the feed concentration (27.85 g/L) is achievable. Three operational parameters were studied: evaporator temperature, internal condenser temperature and feed flow rate. Maximum lactic acid concentration was 86.69 g/L with an evaporator temperature of 120 °C, condenser temperature of 13 °C, and feed flow rate of 8.27 mL/min. Separation of LA from hemicellulosic sugars using HSPE was a more difficult process than separation of LA from 6-carbon sugars.

نتیجه گیری

4. Conclusions


• Lactic acid (LA) concentration by Hybrid Short Path Evaporation (HSPE) was influenced by internal condenser temperature, evaporator temperature, and feed flow rate.


• LA was more concentrated in the residue stream.


• HSPE downstream processing of LA from hemicellulose sugars was harder than from 6-carbon sugars.


• Other operational parameters need to be studied in order to optimize the HSPE process for 2G-LA purification.


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