عنوان
پدید آورنده
موضوع
رده
کتابخانه
محل استقرار
شماره کتابشناسی ملی
شماره
TLpq2466821167
زبان اثر
زبان متن نوشتاري يا گفتاري و مانند آن
انگلیسی
عنوان و نام پديدآور
عنوان اصلي
Pretreatment to Enhance the Anaerobic Digestion of Recalcitrant Lignocellulosic Biomass Materials
نام عام مواد
[Thesis]
نام نخستين پديدآور
khan, Muhammad Usman
نام ساير پديدآوران
Ahring, Birgitte K.
وضعیت نشر و پخش و غیره
نام ناشر، پخش کننده و غيره
Washington State University
تاریخ نشرو بخش و غیره
2020
مشخصات ظاهری
نام خاص و کميت اثر
198
یادداشتهای مربوط به پایان نامه ها
جزئيات پايان نامه و نوع درجه آن
Ph.D.
کسي که مدرک را اعطا کرده
Washington State University
امتياز متن
2020
یادداشتهای مربوط به خلاصه یا چکیده
متن يادداشت
Energy consumption using fossil fuels creates environmental pollution including greenhouse gasses promoting climate changes throughout the world. To levitate these problems, renewable energy sources have been promoted as an alternative. Lignocellulose is one of the most abundant and renewable biomass resources on the earth which makes it an ideal feedstock for production of biofuels particularly biogas. However, AD of the lignocellulosic materials is also limited due to the crystallinity of cellulose and embedded connections to lignin within the cellulose and hemicellulose polymer. The primary hypothesis of this study is to manipulate different types of pretreatments to decrease the recalcitrance, improve the hydrolysis and biogas production from lignocellulosic materials. Wet explosion Pretreatment, Alkaline thermal pretreatment, Mono and combined alkali pretreatment were tested for AD of lignocellulosic materials. The results revealed that increased severity of wet explosion pretreatment with base addition (2%) increased the biogas yield and lignin conversion (56%) during AD with demethoxylation up to 49%. The lignin samples having the highest NaOH concentration in addition to oxygen resulted in highest methane yield during anaerobic digestion. The alkaline thermal pretreatment was used for AD of residual manure fibers after AD. The results of study showed that degradation of manure fibers was improved ca. 43.6% as a result of alkaline thermal pretreatment with 3% w/w NaOH added. Methane yield improved by 143.5 and 180.2% under mesophilic and thermophilic conditions, respectively. Compositional analysis of effluent after AD showed that 57.3% of cellulose, 70.1% of hemicellulose, 39.4% of acid soluble and 19.4% of acid insoluble lignin was converted to methane under thermophilic conditions while under mesophilic conditions, 50.8% of the cellulose, 59.5% of the hemicellulose, 39.9% of acid soluble and 21.7% of acid insoluble lignin was converted to methane. The lime (CaO), NaOH and CaO+NaOH pretreatment was tested for AD of digested manure fibers. The methane yield improved by 115.7, 127.1 and 148.7% by CaO, NaOH and NaOH + CaO pretreatment respectively. The VS degradation was found to be 40.6, 42.6 and 46.4% by CaO, NaOH and NaOH + CaO pretreatment respectively.
موضوع (اسم عام یاعبارت اسمی عام)
موضوع مستند نشده
Agricultural engineering
موضوع مستند نشده
Alternative energy
موضوع مستند نشده
Climate change
موضوع مستند نشده
Environmental management
موضوع مستند نشده
Materials science
موضوع مستند نشده
Sustainability
نام شخص به منزله سر شناسه - (مسئولیت معنوی درجه اول )
مستند نام اشخاص تاييد نشده
Ahring, Birgitte K.
مستند نام اشخاص تاييد نشده
khan, Muhammad Usman
دسترسی و محل الکترونیکی
نام الکترونيکي
مطالعه متن کتاب وضعیت انتشار
فرمت انتشار
p
اطلاعات رکورد کتابشناسی
نوع ماده
[Thesis]
کد کاربرگه
276903
اطلاعات دسترسی رکورد
سطح دسترسي
a
تكميل شده
Y
