Alkali pretreatment enhances biogas production in the anaerobic digestion of pulp and paper sludge

2009 ◽  
Vol 170 (1) ◽  
pp. 366-373 ◽  
Author(s):  
Yunqin Lin ◽  
Dehan Wang ◽  
Shaoquan Wu ◽  
Chunmin Wang
2020 ◽  
Vol 188 ◽  
pp. 109743 ◽  
Author(s):  
Chen Linyi ◽  
Qin Yujie ◽  
Chen Buqing ◽  
Wu Chenglong ◽  
Zheng Shaohong ◽  
...  

2014 ◽  
Vol 675-677 ◽  
pp. 680-684
Author(s):  
Zhao Mei Du ◽  
Qin Wu ◽  
Xiao Qin Zhang

The feasibility of pulp and paper mill wastewater sludge as substrates for biogas production was evaluated in labrotory scale. Also the influence of pre-acidification, feeding modes and sludge concentration on anaerobic digestion system were studied.


REAKTOR ◽  
2017 ◽  
Vol 16 (3) ◽  
pp. 141
Author(s):  
Cindy Rianti Priadi ◽  
Iftita Rahmatika ◽  
Chihiya Fitria ◽  
Dwica Wulandari ◽  
Setyo Sarwanto Moersidik

BIOGAS ENERGY AND FERTILIZING POTENTIAL FROM PAPER SLUDGE Paper sludge contains potential as energy and fertilizer due to the high amount of C, N and P. The aims of this study were to investigate resource recovery potential through biogas production from paper sludge only and with cow manure as co-substrate for 30-45 days in batch anaerobic digestion reactor. In addition, the fertilizer potential from digestate was also tested in Vetiveria zizanioides. Co-digestion with cow manure yielded higher methane gas up to 380 CH4/g VS due to a more optimum C/N ratio. Vetiver plants grown on digestate relatively showed the high growth performance after 4 weeks. The heavy metal accumulation from digestate was still in tolerable amount since the growth rate was not significantly different with the plant grown in fertilizer. Therefore, resource recovery technology can be an option to recover C, N and P in paper sludge to achieve sustainable waste management.  Keywords: ananerobic digestion; biogas;  fertilizer; paper sludge AbstrakLumpur dari Air Limbah industri kertas memiliki C, N dan P yang tinggi sehingga berpotensi menghasilkan energi dan menjadi pupuk, Penelitian ini bertujuan untuk meneliti pemulihan sumber daya (resource recovery) melalui produksi biogas dari lumpur kertas tanpa dan dengan ko-substrat kotoran sapi selama 30-45 hari dalam reaktor batch anaerobic digestion. Selanjutnya potensi pupuk dari digestat juga diuji dengan tumbuhan akar wangi (Vetiveria zizanioides). Setelah 45 hari, lumpur kertas dengan kotoran sapi menghasikan gas metana yang lebih besar, yaitu 380 CH4/g VS. Tanaman akar wangi yang ditanam dengan dengan digestat R2 tumbuh relatif tinggi setelah 4 minggu. Akumulasi logam berat juga masih dalam batas aman karena laju pertumbuhannya yang masih sebanding dengan tanaman yang diberi pupuk. Oleh karena itu, pemulihan sumber daya dapat diterapkan untuk memanfaatkan C, N dan P yang terkandung dalam lumpur kertas sebagai usaha pengelolaan limbah berkelanjutan.  Kata Kunci: biogas; digestasi anaerobik; lumpur kertas; pupuk 


2018 ◽  
Vol 140 (4) ◽  
Author(s):  
Hongyan Ren ◽  
Nan Jiang ◽  
Tao Wang ◽  
M. Mubashar Omar ◽  
Wenquan Ruan ◽  
...  

In order to enhance biogas production in the anaerobic digestion of duckweed, and duckweed with excess sludge as single and mixed substrates, the effects of hot alkali pretreatment and variation of the ratio of substrate to inoculum were investigated. The results showed that the delayed stage of anaerobic gas generation could be shortened when the two substrates were mixed during methane production, to give a cumulative gas yield of 2963 mL, which was 11% higher than the calculated value for the complementary substrate. The methane content was 57%, which was 13% higher than that from the duckweed group and 9% higher than from the excess sludge group. Furthermore, the methane yield was improved by 8% after the duckweed was pretreated with hot alkali. When the substrate to inoculum ratio was 1:1, the maximum biogas production of 3309 mL was achieved, with a methane yield of 1883 mL which, respectively, increases of 151 mL and 304 mL compared with the worst group (1:2.5).


2014 ◽  
Vol 989-994 ◽  
pp. 138-141 ◽  
Author(s):  
Na Wei

Sewage sludge is difficult to degrade in anaerobic digestion systems and pretreatments have been shown to speed up the hydrolysis stage. In this paper sludge anaerobic digestion experiments with peracetic acid as a pretreatment were carried out and the effects of acid pretreatment using peracetic acid on subsequent digestion were investigated. It has been proved that this treatment effectively leads to a solubilisation of organic material and thus leads to a increase of soluble chemical oxygen demand (SCOD) and volatile fatty acids (VFA) concentration. Besides, the SV of sludge was reduced and the settling characteristics of sludge were improved. But high dosage of peracetic acid lead to a decrease in biogas production and the proper dosage was 20 g/kg DS. It can be concluded that sludge anaerobic digestion with peracetic acid pretreatment is an effective method for biomass material transformation.


2014 ◽  
Vol 9 ◽  
pp. 65-69 ◽  
Author(s):  
Cindy Priadi ◽  
Dwica Wulandari ◽  
Iftita Rahmatika ◽  
Setyo Sarwanto Moersidik

2022 ◽  
Vol 23 (1) ◽  
pp. 192-201
Author(s):  
Habchi Sanae ◽  
Lahboubi Nabila ◽  
Karouach Fadoua ◽  
Naim Ikram ◽  
Lahlou Yahya ◽  
...  

2018 ◽  
Vol 12 (7) ◽  
pp. 580
Author(s):  
Antony P. Pallan ◽  
S. Antony Raja ◽  
C. G. Varma ◽  
Deepak Mathew D.K. ◽  
Anil K. S. ◽  
...  

2020 ◽  
Vol 10 (3) ◽  
Author(s):  
Damaris Kerubo Oyaro ◽  
Zablon Isaboke Oonge ◽  
Patts Meshack Odira

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